Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S0108270108037232/sq3171sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S0108270108037232/sq3171IIsup2.hkl |
CCDC reference: 718130
For related literature, see: Allen et al. (1987); Antonova et al. (2004); Ceccon et al. (2004); Chawdhury et al. (1998); Chisholm (2000); Chisholm & Macintosh (2005); Colquhoun (1984); Colquhoun et al. (2007); Low (2005); Nguyen et al. (1999); Pauling (1960); Pyykko et al. (2005); Ronson et al. (2006); Schwab et al. (1999); Spek (2003); Zheng et al. (2004); Zuo et al. (2002).
(Triphenylphosphonio)cyclopentadienide (0.107 g, 0.329 mmol) and dry triethylamine (0.5 ml) were added, under nitrogen, to a stirred suspension of the dichlorodiazomethane complex, (I) (0.253 g. 0.192 mmol), in dichloromethane (20 ml). After 15 h, the deep yellow–brown solution was extracted with water (3 × 30 ml), dried over magnesium sulfate and evaporated to half-volume. Slow addition of diethyl ether (10 ml) resulted in formation of dark olive-green crystals of (II), which were filtered off, washed with diethyl ether and dried under vacuum (0.256 g, 83% yield). Analysis, found: C 54.62, H 4.35, N 1.73%; calculated for C76H66BrClF6N2P6W.CH2Cl2: C 54.68, H 4.15, N 1.66%; 1H NMR (CDCl3, δ, p.p.m.): 7.06–7.38 (m, 40 H, PPh), 7.61–7.68 (m, 15 H), 6.49–6.54 (m, 2 H, Cp), 6.19–6.22 (m, 1 H, Cp), 2.88 (br d, 8 H, CH2); 13C NMR (CDCl3, δ, p.p.m.): 128.30, 129.01, 129.97, 130.17, 130.27, 130.91, 133.61, 133.95, 134.71, 134.46, 134.51, 134.88, 135.02, 135.37, 120.48, 120.95, 122.74, 124.79, 31.62 p.p.m.. Single crystals suitable for X-ray analysis were grown by vapour diffusion of diethyl ether into a solution of (II) in dichloromethane.
One of the phenyl rings attached to P5 was modelled as disordered over two positions. The C—C distances within each ring were restrained to 1.39 (1) Å. The occupancies of the two rings refined to 0.58 (3) (atoms C71–C76) and 0.42 (3) (atoms C720–C760). Not all the H atoms in the structure could be located in difference Fourier maps. H atoms were therefore positioned geometrically after each cycle of refinement, with C—H = 0.95 Å and Uiso(H) = 1.2Ueq(C). The crystal structure contains a solvent molecule of dichloromethane which was not sufficiently resolved in the electron density map to enable it to be modelled with disordered atoms. The residual electron density was therefore modelled using the SQUEEZE routine available in PLATON (Spek, 2003).
Transition metal complexes containing extended conjugated organic ligands have the potential to display a wide range of novel electronic, magnetic and optical properties (Chisholm & Macintosh, 2005; Ceccon et al., 2004; Schwab et al., 1999) and thus to provide a basis for the development of molecular materials and devices (Low, 2005; Chisholm, 2000). One of the challenges in synthesizing such complexes is to design ligands that provide an extended conjugation pathway between multiple metal or metal/metalloid centres. Examples of ligands so far investigated for this purpose include polyethynylenes (Zheng et al., 2004; Antonova et al., 2004), 1,4-phenylenediethynylene (Nguyen et al., 1999; Chawdhury et al., 1998) and 4-ethynylpyridine (Ronson et al., 2006; Zuo et al., 2002). The use of dinitrogen-derived ligands, containing, for example, diazenido(1-), M═N═N—R, or diazoalkane, M≡N—N═CR2, moieties has been much less explored in this context, although we have recently shown that such complexes can have significant utility in the assembly of extended-chain polynuclear transition metal complexes (Colquhoun et al., 2007).
The cationic dichlorodiazomethane complex trans-[BrW(dppe)2(N2CCl2]+, (I), is readily obtained from trans-W(dppe)2(N2)2 via the hydrazido(2-) complex trans-[BrW(dppe)2(NNH2)]+, and undergoes facile replacement of one or both chloro-substituents by a wide range of nitrogen- and oxygen-based nucleophiles (Colquhoun, 1984). Here, we report the first example of such a reaction involving a carbon-centred nucleophile, (triphenylphosphonio)cyclopentadienide, which (probably for steric reasons) replaces just one of the two chloro-substituents at C to give trans-[BrW(dppe)2{N2C(Cl)(C5H3PPh3)}]+, isolated as the title hexafluorophosphate salt, (II).
Two valence-bond structures, (a) and (b) (Fig. 1), may be drawn for the cation of (II), suggesting the possibility of extended delocalization of electron density between W and P via the π-system of the fully conjugated cyclopentadienylidene(chloro)diazomethane ligand. The structural features associated with such delocalization would be expected to include near-coplanarity of the entire metal–ligand framework from W to P, some degree of equalization of bond distances between the exocyclic and endocyclic C atoms involved in delocalization, and some degree of shortening of the P—Ccyclopentadienylidene bond relative to the adjacent P—Cphenyl bonds. To determine whether such geometric effects can in fact be observed, a single-crystal X-ray study of complex (II) was undertaken.
Compound (II) crystallizes with discrete cations and anions, in the form of a dichloromethane solvate. One of the phenyl rings of the triphenylphosphonium residue is rotationally disordered about the P5—C71 bond, but for clarity only one of the two orientations found is shown in Fig. 2. The metal–ligand system between atoms W1 and P5 exhibits a very high degree of coplanarity, with atoms W1 and N2 lying only 0.019 and 0.026 Å, respectively, out of the mean metal–ligand plane, and no other ligand atom being displaced from this plane by more than 0.01 Å (Fig. 3). Such coplanarity is certainly consistent with a degree of delocalization throughout the metal–ligand π-system, and an analysis of bond lengths tends to confirm this.
Thus, although the pattern of C—C bond lengths (Table 1) is, at first sight, compatible simply with canonical form (a), there are a number of features of the structure which also seem to require a significant contribution from form (b). For example, the endocyclic C2—C6 and exocyclic C1—C2 bond lengths differ by only 0.014 Å rather than showing the ca 0.18 Å difference expected between a single and a double C—C bond (Pauling, 1960). Moreover, the endocyclic double bond C5═C6, which could be involved in long-range delocalization, is indeed lengthened slightly relative to the `uninvolved' double bond C3—C4. Finally, the bond from P to the C5 ring (P5—C5) is significantly shorter than the three adjacent P5—C bonds to phenyl (average 1.800 Å), once again consistent with a contribution from canonical form (b). The W—N bond length, at 1.775 (4) Å, is longer than that normally associated with a W≡N triple bond (Pyykko et al., 2005), whilst the N—N bond distance, at 1.312 (5) Å, represents a bond order of ca 1.5 (Allen et al., 1987). The W—N and N—N bond lengths thus also imply contributions to the structure from both canonical forms (a) and (b). The geometry at N1 is noticeably distorted from linear [W1—N1—N2 = 164.5 (3)°] as a result of steric repulsions between the chloro-substituent Cl1 and its adjacent diphosphine ligand.
The variations in bond lengths from those expected solely on the basis of canonical form (a), together with the coplanarity of the W1—N1—N2—C1(Cl1)—C5H3—P5 fragment and the torsion angles within the fragment, are thus fully compatible with delocalization of electron density throughout the metal–ligand π-system. Although the observed bond lengths do show some discrepancies from the bond orders suggested by Fig. 1 (notably the inequality of bonds C2—C3 and C3—C4), the overall pattern of bond lengths is clearly very much more consistent with the bond orders for this `averaged' model than for either canonical form alone.
This structural analysis clearly demonstrates that the tungsten(II)–dinitrogen unit is a powerful π-electron donor, with the ability to transfer electron density from the metal to a distant acceptor centre through an extended conjugated ligand system. As a consequence, complexes of this type could have potential application as non-linear optical materials and molecular semiconductors.
For related literature, see: Allen et al. (1987); Antonova et al. (2004); Ceccon et al. (2004); Chawdhury et al. (1998); Chisholm (2000); Chisholm & Macintosh (2005); Colquhoun (1984); Colquhoun et al. (2007); Low (2005); Nguyen et al. (1999); Pauling (1960); Pyykko et al. (2005); Ronson et al. (2006); Schwab et al. (1999); Spek (2003); Zheng et al. (2004); Zuo et al. (2002).
Data collection: COLLECT (Nonius, 2001); cell refinement: DENZO/SCALEPACK (Otwinowski & Minor, 1997); data reduction: DENZO/SCALEPACK (Otwinowski & Minor, 1997); program(s) used to solve structure: SIR92 (Altomare et al., 1994); program(s) used to refine structure: CRYSTALS (Betteridge et al., 2003); molecular graphics: CAMERON (Watkin et al., 1996); software used to prepare material for publication: CRYSTALS (Betteridge et al., 2003).
C76H66BrClN2P5W·F6P·0.6(CH2Cl2) | F(000) = 3248 |
Mr = 1657.27 | Dx = 1.431 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 16178 reflections |
a = 18.2621 (10) Å | θ = 5–27° |
b = 14.706 (1) Å | µ = 2.28 mm−1 |
c = 28.934 (2) Å | T = 150 K |
β = 98.236 (3)° | Plate, green |
V = 7690.3 (9) Å3 | 0.12 × 0.09 × 0.08 mm |
Z = 4 |
Nonius KappaCCD diffractometer | 17372 independent reflections |
Radiation source: fine-focus sealed tube | 9841 reflections with I > 3σ(I) |
Graphite monochromator | Rint = 0.027 |
ω scans | θmax = 27.5°, θmin = 5.1° |
Absorption correction: multi-scan (DENZO/SCALEPACK; Otwinowski & Minor, 1997) | h = −23→23 |
Tmin = 0.79, Tmax = 0.84 | k = 0→19 |
17372 measured reflections | l = 0→37 |
Refinement on F | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.036 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.037 | H-atom parameters not refined |
S = 1.09 | Method, part 1, Chebychev polynomial, (Watkin, 1994, Prince, 1982)
[weight] = 1.0/[A0*T0(x) + A1*T1(x) ··· + An-1]*Tn-1(x)]
where Ai are the Chebychev coefficients listed below and x = F /Fmax Method = Robust Weighting (Prince, 1982) W = [weight] * [1-(deltaF/6*sigmaF)2]2 Ai are: 0.292 0.504E-01 0.896E-01 Watkin, D. (1994). Acta Cryst. A50, 411–437. |
9841 reflections | (Δ/σ)max = 0.003 |
875 parameters | Δρmax = 1.01 e Å−3 |
24 restraints | Δρmin = −0.70 e Å−3 |
0 constraints |
C76H66BrClN2P5W·F6P·0.6(CH2Cl2) | V = 7690.3 (9) Å3 |
Mr = 1657.27 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 18.2621 (10) Å | µ = 2.28 mm−1 |
b = 14.706 (1) Å | T = 150 K |
c = 28.934 (2) Å | 0.12 × 0.09 × 0.08 mm |
β = 98.236 (3)° |
Nonius KappaCCD diffractometer | 17372 independent reflections |
Absorption correction: multi-scan (DENZO/SCALEPACK; Otwinowski & Minor, 1997) | 9841 reflections with I > 3σ(I) |
Tmin = 0.79, Tmax = 0.84 | Rint = 0.027 |
17372 measured reflections |
R[F2 > 2σ(F2)] = 0.036 | 24 restraints |
wR(F2) = 0.037 | H-atom parameters not refined |
S = 1.09 | Δρmax = 1.01 e Å−3 |
9841 reflections | Δρmin = −0.70 e Å−3 |
875 parameters |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
W1 | 0.266376 (10) | 0.448099 (12) | 0.684906 (7) | 0.0227 | |
Br1 | 0.40946 (2) | 0.43691 (3) | 0.700747 (18) | 0.0316 | |
P1 | 0.27282 (7) | 0.30408 (8) | 0.63730 (5) | 0.0285 | |
P2 | 0.28076 (7) | 0.32885 (8) | 0.74751 (5) | 0.0282 | |
P3 | 0.27647 (7) | 0.57382 (8) | 0.62523 (5) | 0.0269 | |
P4 | 0.26774 (7) | 0.58788 (8) | 0.73508 (5) | 0.0258 | |
P5 | −0.24945 (6) | 0.43046 (9) | 0.64000 (4) | 0.0293 | |
P6 | 0.33001 (11) | 0.92489 (11) | 0.58265 (6) | 0.0529 | |
F1 | 0.2764 (3) | 0.9955 (3) | 0.6030 (2) | 0.0950 | |
F2 | 0.2606 (3) | 0.8642 (3) | 0.5628 (2) | 0.0975 | |
F3 | 0.3213 (2) | 0.9790 (3) | 0.53475 (14) | 0.0694 | |
F4 | 0.3824 (3) | 0.8549 (3) | 0.56258 (16) | 0.0869 | |
F5 | 0.3976 (2) | 0.9874 (3) | 0.60252 (14) | 0.0704 | |
F6 | 0.3429 (3) | 0.8695 (3) | 0.63077 (16) | 0.0951 | |
N1 | 0.1683 (2) | 0.4438 (3) | 0.67720 (13) | 0.0252 | |
N2 | 0.0992 (2) | 0.4197 (3) | 0.67749 (16) | 0.0326 | |
Cl1 | 0.04964 (7) | 0.57251 (8) | 0.63429 (5) | 0.0373 | |
C1 | 0.0418 (3) | 0.4654 (3) | 0.66002 (17) | 0.0283 | |
C2 | −0.0310 (2) | 0.4312 (3) | 0.66138 (18) | 0.0305 | |
C3 | −0.0462 (3) | 0.3451 (4) | 0.6807 (2) | 0.0422 | |
C4 | −0.1206 (3) | 0.3341 (4) | 0.6764 (2) | 0.0409 | |
C5 | −0.1547 (3) | 0.4135 (4) | 0.65313 (18) | 0.0308 | |
C6 | −0.0993 (3) | 0.4726 (3) | 0.64425 (17) | 0.0287 | |
C7 | 0.2877 (3) | 0.2040 (3) | 0.6771 (2) | 0.0390 | |
C8 | 0.3253 (3) | 0.2295 (3) | 0.7252 (2) | 0.0354 | |
C9 | 0.2707 (3) | 0.6858 (3) | 0.6534 (2) | 0.0370 | |
C10 | 0.2296 (3) | 0.6805 (3) | 0.69584 (18) | 0.0305 | |
C11 | 0.3419 (3) | 0.2854 (3) | 0.59836 (19) | 0.0321 | |
C12 | 0.3882 (3) | 0.3547 (4) | 0.5884 (2) | 0.0393 | |
C13 | 0.4411 (4) | 0.3397 (4) | 0.5587 (2) | 0.0496 | |
C14 | 0.4459 (4) | 0.2557 (4) | 0.5388 (2) | 0.0480 | |
C15 | 0.4005 (3) | 0.1858 (4) | 0.5482 (2) | 0.0466 | |
C16 | 0.3483 (3) | 0.2004 (4) | 0.5776 (2) | 0.0375 | |
C17 | 0.1856 (3) | 0.2715 (4) | 0.6013 (2) | 0.0447 | |
C18 | 0.1775 (4) | 0.2697 (5) | 0.5526 (3) | 0.0669 | |
C19 | 0.1106 (6) | 0.2494 (7) | 0.5262 (4) | 0.1021 | |
C20 | 0.0519 (6) | 0.2319 (7) | 0.5470 (5) | 0.1186 | |
C21 | 0.0556 (4) | 0.2320 (6) | 0.5960 (5) | 0.1007 | |
C22 | 0.1237 (3) | 0.2526 (4) | 0.6235 (3) | 0.0611 | |
C23 | 0.1943 (3) | 0.2842 (4) | 0.7625 (2) | 0.0373 | |
C24 | 0.1781 (3) | 0.1911 (4) | 0.7626 (2) | 0.0445 | |
C25 | 0.1107 (4) | 0.1605 (5) | 0.7752 (2) | 0.0602 | |
C26 | 0.0612 (4) | 0.2215 (6) | 0.7882 (3) | 0.0717 | |
C27 | 0.0766 (4) | 0.3132 (6) | 0.7887 (3) | 0.0669 | |
C28 | 0.1417 (3) | 0.3450 (4) | 0.7750 (2) | 0.0492 | |
C29 | 0.3367 (3) | 0.3487 (3) | 0.80452 (19) | 0.0342 | |
C30 | 0.3059 (3) | 0.3910 (4) | 0.8408 (2) | 0.0441 | |
C31 | 0.3496 (4) | 0.4133 (5) | 0.8820 (2) | 0.0571 | |
C32 | 0.4237 (4) | 0.3930 (5) | 0.8888 (3) | 0.0603 | |
C33 | 0.4550 (4) | 0.3513 (4) | 0.8543 (3) | 0.0564 | |
C34 | 0.4120 (3) | 0.3281 (4) | 0.8124 (2) | 0.0435 | |
C35 | 0.3611 (3) | 0.5916 (3) | 0.59904 (19) | 0.0292 | |
C36 | 0.3622 (3) | 0.5796 (4) | 0.5515 (2) | 0.0382 | |
C37 | 0.4274 (3) | 0.5922 (5) | 0.5326 (2) | 0.0503 | |
C38 | 0.4924 (3) | 0.6135 (4) | 0.5610 (3) | 0.0516 | |
C39 | 0.4917 (3) | 0.6258 (4) | 0.6081 (2) | 0.0442 | |
C40 | 0.4273 (3) | 0.6142 (3) | 0.6275 (2) | 0.0368 | |
C41 | 0.2035 (3) | 0.5776 (3) | 0.57491 (19) | 0.0332 | |
C42 | 0.1867 (3) | 0.6586 (4) | 0.5504 (2) | 0.0494 | |
C43 | 0.1322 (4) | 0.6588 (5) | 0.5112 (3) | 0.0592 | |
C44 | 0.0947 (3) | 0.5826 (5) | 0.4961 (2) | 0.0542 | |
C45 | 0.1120 (4) | 0.5030 (5) | 0.5199 (2) | 0.0580 | |
C46 | 0.1652 (3) | 0.5007 (4) | 0.5594 (2) | 0.0461 | |
C47 | 0.2064 (3) | 0.5923 (3) | 0.77964 (19) | 0.0297 | |
C48 | 0.2324 (3) | 0.5974 (4) | 0.82697 (19) | 0.0350 | |
C49 | 0.1827 (3) | 0.5933 (4) | 0.8594 (2) | 0.0442 | |
C50 | 0.1078 (3) | 0.5852 (4) | 0.8453 (2) | 0.0466 | |
C51 | 0.0817 (3) | 0.5824 (4) | 0.7985 (2) | 0.0456 | |
C52 | 0.1302 (3) | 0.5851 (4) | 0.7656 (2) | 0.0372 | |
C53 | 0.3561 (3) | 0.6321 (3) | 0.76398 (18) | 0.0285 | |
C54 | 0.3799 (3) | 0.7212 (3) | 0.75847 (19) | 0.0334 | |
C55 | 0.4463 (3) | 0.7514 (4) | 0.7815 (2) | 0.0370 | |
C56 | 0.4905 (3) | 0.6951 (4) | 0.8116 (2) | 0.0375 | |
C57 | 0.4686 (3) | 0.6056 (4) | 0.81764 (19) | 0.0354 | |
C58 | 0.4025 (3) | 0.5749 (3) | 0.79360 (18) | 0.0297 | |
C59 | −0.2932 (2) | 0.4477 (4) | 0.69129 (17) | 0.0326 | |
C60 | −0.2527 (3) | 0.4344 (4) | 0.73570 (18) | 0.0345 | |
C61 | −0.2852 (3) | 0.4507 (4) | 0.77491 (19) | 0.0454 | |
C62 | −0.3574 (3) | 0.4814 (4) | 0.7713 (2) | 0.0438 | |
C63 | −0.3970 (3) | 0.4964 (4) | 0.7279 (2) | 0.0480 | |
C64 | −0.3656 (3) | 0.4792 (4) | 0.6879 (2) | 0.0443 | |
C65 | −0.2900 (3) | 0.3330 (4) | 0.60789 (18) | 0.0351 | |
C66 | −0.2548 (3) | 0.3010 (5) | 0.5717 (2) | 0.0472 | |
C67 | −0.2847 (4) | 0.2276 (5) | 0.5448 (2) | 0.0536 | |
C68 | −0.3477 (4) | 0.1863 (4) | 0.5546 (2) | 0.0519 | |
C69 | −0.3820 (3) | 0.2168 (5) | 0.5913 (2) | 0.0479 | |
C70 | −0.3537 (3) | 0.2910 (4) | 0.61785 (18) | 0.0385 | |
C71 | −0.2669 (3) | 0.5309 (3) | 0.60524 (16) | 0.0324 | |
C72 | −0.2488 (14) | 0.6162 (6) | 0.6244 (5) | 0.0612 | 0.58 (3) |
C73 | −0.2564 (16) | 0.6959 (9) | 0.5984 (3) | 0.0726 | 0.58 (3) |
C74 | −0.2879 (4) | 0.6886 (4) | 0.5518 (2) | 0.0552 | |
C75 | −0.3027 (13) | 0.6068 (8) | 0.5298 (5) | 0.0643 | 0.58 (3) |
C76 | −0.2924 (13) | 0.5303 (12) | 0.5576 (3) | 0.0520 | 0.58 (3) |
C720 | −0.2882 (12) | 0.6100 (7) | 0.6254 (6) | 0.0387 | 0.42 (3) |
C730 | −0.3014 (12) | 0.6867 (10) | 0.5976 (4) | 0.0421 | 0.42 (3) |
C750 | −0.2685 (16) | 0.6061 (8) | 0.5343 (6) | 0.0475 | 0.42 (3) |
C760 | −0.2573 (16) | 0.5251 (12) | 0.5587 (4) | 0.0423 | 0.42 (3) |
H31 | −0.0102 | 0.3027 | 0.6943 | 0.0511* | |
H41 | −0.1458 | 0.2832 | 0.6869 | 0.0492* | |
H61 | −0.1060 | 0.5303 | 0.6294 | 0.0345* | |
H71 | 0.2411 | 0.1775 | 0.6797 | 0.0480* | |
H72 | 0.3177 | 0.1610 | 0.6640 | 0.0480* | |
H81 | 0.3224 | 0.1797 | 0.7457 | 0.0431* | |
H82 | 0.3757 | 0.2433 | 0.7237 | 0.0431* | |
H91 | 0.3194 | 0.7076 | 0.6632 | 0.0456* | |
H92 | 0.2453 | 0.7269 | 0.6314 | 0.0456* | |
H101 | 0.2350 | 0.7366 | 0.7123 | 0.0366* | |
H102 | 0.1787 | 0.6693 | 0.6856 | 0.0366* | |
H121 | 0.3841 | 0.4131 | 0.6018 | 0.0489* | |
H131 | 0.4734 | 0.3873 | 0.5525 | 0.0627* | |
H141 | 0.4811 | 0.2457 | 0.5181 | 0.0597* | |
H151 | 0.4050 | 0.1276 | 0.5347 | 0.0575* | |
H161 | 0.3164 | 0.1522 | 0.5837 | 0.0454* | |
H181 | 0.2190 | 0.2827 | 0.5373 | 0.0776* | |
H191 | 0.1065 | 0.2478 | 0.4931 | 0.1157* | |
H201 | 0.0059 | 0.2189 | 0.5283 | 0.1342* | |
H211 | 0.0131 | 0.2186 | 0.6102 | 0.1203* | |
H221 | 0.1277 | 0.2537 | 0.6566 | 0.0736* | |
H241 | 0.2129 | 0.1484 | 0.7541 | 0.0534* | |
H251 | 0.0996 | 0.0974 | 0.7746 | 0.0718* | |
H261 | 0.0159 | 0.2006 | 0.7970 | 0.0877* | |
H271 | 0.0423 | 0.3550 | 0.7986 | 0.0826* | |
H281 | 0.1506 | 0.4086 | 0.7740 | 0.0600* | |
H301 | 0.2545 | 0.4042 | 0.8369 | 0.0536* | |
H311 | 0.3283 | 0.4431 | 0.9059 | 0.0684* | |
H321 | 0.4533 | 0.4081 | 0.9175 | 0.0691* | |
H331 | 0.5064 | 0.3379 | 0.8590 | 0.0652* | |
H341 | 0.4341 | 0.2979 | 0.7889 | 0.0514* | |
H361 | 0.3182 | 0.5628 | 0.5318 | 0.0465* | |
H371 | 0.4272 | 0.5860 | 0.4998 | 0.0617* | |
H381 | 0.5373 | 0.6196 | 0.5482 | 0.0643* | |
H391 | 0.5360 | 0.6425 | 0.6276 | 0.0532* | |
H401 | 0.4279 | 0.6216 | 0.6601 | 0.0447* | |
H421 | 0.2120 | 0.7132 | 0.5604 | 0.0586* | |
H431 | 0.1213 | 0.7140 | 0.4947 | 0.0696* | |
H441 | 0.0572 | 0.5842 | 0.4697 | 0.0639* | |
H451 | 0.0872 | 0.4485 | 0.5092 | 0.0679* | |
H461 | 0.1752 | 0.4451 | 0.5758 | 0.0545* | |
H481 | 0.2839 | 0.6037 | 0.8373 | 0.0421* | |
H491 | 0.2010 | 0.5961 | 0.8918 | 0.0536* | |
H501 | 0.0746 | 0.5816 | 0.8677 | 0.0583* | |
H511 | 0.0299 | 0.5785 | 0.7884 | 0.0559* | |
H521 | 0.1113 | 0.5820 | 0.7332 | 0.0450* | |
H541 | 0.3495 | 0.7615 | 0.7385 | 0.0411* | |
H551 | 0.4620 | 0.8118 | 0.7766 | 0.0454* | |
H561 | 0.5357 | 0.7171 | 0.8281 | 0.0460* | |
H571 | 0.4989 | 0.5661 | 0.8382 | 0.0424* | |
H581 | 0.3882 | 0.5135 | 0.7973 | 0.0363* | |
H601 | −0.2029 | 0.4141 | 0.7387 | 0.0414* | |
H611 | −0.2577 | 0.4407 | 0.8049 | 0.0554* | |
H621 | −0.3794 | 0.4920 | 0.7986 | 0.0549* | |
H631 | −0.4462 | 0.5187 | 0.7254 | 0.0594* | |
H641 | −0.3937 | 0.4890 | 0.6580 | 0.0529* | |
H661 | −0.2104 | 0.3289 | 0.5653 | 0.0576* | |
H671 | −0.2612 | 0.2064 | 0.5196 | 0.0647* | |
H681 | −0.3681 | 0.1365 | 0.5361 | 0.0608* | |
H691 | −0.4251 | 0.1868 | 0.5984 | 0.0570* | |
H701 | −0.3779 | 0.3127 | 0.6426 | 0.0463* | |
H721 | −0.2305 | 0.6201 | 0.6568 | 0.0727* | 0.58 |
H731 | −0.2406 | 0.7529 | 0.6117 | 0.0872* | 0.58 |
H741 | −0.2998 | 0.7429 | 0.5345 | 0.0660* | |
H751 | −0.3192 | 0.6030 | 0.4972 | 0.0734* | 0.58 |
H761 | −0.3036 | 0.4730 | 0.5432 | 0.0606* | 0.58 |
H725 | −0.2937 | 0.6118 | 0.6576 | 0.0477* | 0.42 |
H735 | −0.3203 | 0.7398 | 0.6105 | 0.0521* | 0.42 |
H755 | −0.2622 | 0.6048 | 0.5023 | 0.0541* | 0.42 |
H765 | −0.2441 | 0.4702 | 0.5447 | 0.0512* | 0.42 |
U11 | U22 | U33 | U12 | U13 | U23 | |
W1 | 0.01851 (8) | 0.01787 (8) | 0.03285 (10) | −0.00011 (8) | 0.00750 (6) | 0.00461 (10) |
Br1 | 0.0206 (2) | 0.0284 (3) | 0.0462 (3) | 0.00102 (19) | 0.00662 (19) | 0.0059 (2) |
P1 | 0.0244 (6) | 0.0210 (6) | 0.0411 (8) | 0.0007 (5) | 0.0079 (5) | 0.0007 (5) |
P2 | 0.0267 (6) | 0.0217 (6) | 0.0373 (7) | 0.0007 (5) | 0.0086 (5) | 0.0101 (6) |
P3 | 0.0262 (6) | 0.0206 (6) | 0.0355 (7) | 0.0004 (4) | 0.0092 (5) | 0.0057 (5) |
P4 | 0.0217 (6) | 0.0207 (5) | 0.0358 (7) | 0.0001 (4) | 0.0069 (5) | 0.0016 (5) |
P5 | 0.0199 (5) | 0.0394 (8) | 0.0282 (6) | −0.0009 (5) | 0.0023 (5) | −0.0033 (6) |
P6 | 0.0785 (12) | 0.0372 (9) | 0.0471 (10) | −0.0184 (8) | 0.0231 (9) | −0.0080 (7) |
F1 | 0.101 (4) | 0.069 (3) | 0.128 (4) | −0.022 (3) | 0.061 (3) | −0.040 (3) |
F2 | 0.101 (4) | 0.072 (3) | 0.124 (4) | −0.045 (3) | 0.030 (3) | −0.035 (3) |
F3 | 0.078 (3) | 0.073 (3) | 0.055 (2) | −0.008 (2) | 0.000 (2) | 0.007 (2) |
F4 | 0.117 (4) | 0.069 (3) | 0.073 (3) | 0.020 (3) | 0.011 (3) | −0.014 (2) |
F5 | 0.087 (3) | 0.051 (2) | 0.067 (3) | −0.022 (2) | −0.012 (2) | 0.009 (2) |
F6 | 0.174 (5) | 0.050 (2) | 0.065 (3) | −0.037 (3) | 0.033 (3) | 0.003 (2) |
N1 | 0.0250 (18) | 0.0191 (18) | 0.033 (2) | −0.0009 (17) | 0.0093 (15) | 0.0024 (18) |
N2 | 0.0166 (19) | 0.030 (2) | 0.051 (3) | 0.0011 (16) | 0.0054 (18) | 0.0080 (19) |
Cl1 | 0.0284 (6) | 0.0316 (7) | 0.0528 (8) | −0.0007 (5) | 0.0090 (5) | 0.0106 (6) |
C1 | 0.027 (2) | 0.025 (3) | 0.034 (3) | 0.0003 (18) | 0.010 (2) | 0.005 (2) |
C2 | 0.020 (2) | 0.033 (3) | 0.039 (3) | 0.0043 (19) | 0.006 (2) | 0.001 (2) |
C3 | 0.028 (3) | 0.028 (3) | 0.072 (4) | 0.000 (2) | 0.011 (3) | 0.014 (3) |
C4 | 0.030 (3) | 0.032 (3) | 0.061 (4) | −0.004 (2) | 0.007 (3) | 0.012 (3) |
C5 | 0.020 (2) | 0.037 (3) | 0.037 (3) | −0.0015 (19) | 0.009 (2) | −0.002 (2) |
C6 | 0.025 (2) | 0.030 (3) | 0.031 (3) | 0.0024 (19) | 0.005 (2) | −0.003 (2) |
C7 | 0.047 (3) | 0.021 (2) | 0.052 (4) | −0.007 (2) | 0.017 (3) | 0.001 (2) |
C8 | 0.038 (3) | 0.022 (2) | 0.047 (3) | 0.000 (2) | 0.011 (2) | 0.012 (2) |
C9 | 0.049 (3) | 0.020 (2) | 0.045 (3) | 0.002 (2) | 0.017 (3) | 0.008 (2) |
C10 | 0.028 (2) | 0.025 (2) | 0.039 (3) | 0.0004 (19) | 0.004 (2) | 0.002 (2) |
C11 | 0.031 (3) | 0.028 (3) | 0.040 (3) | 0.007 (2) | 0.011 (2) | 0.005 (2) |
C12 | 0.047 (3) | 0.034 (3) | 0.041 (3) | 0.004 (2) | 0.022 (3) | 0.005 (2) |
C13 | 0.055 (4) | 0.040 (3) | 0.061 (4) | 0.002 (3) | 0.036 (3) | 0.012 (3) |
C14 | 0.055 (4) | 0.045 (3) | 0.049 (4) | 0.017 (3) | 0.025 (3) | 0.006 (3) |
C15 | 0.056 (4) | 0.037 (3) | 0.051 (4) | 0.013 (3) | 0.021 (3) | −0.002 (3) |
C16 | 0.036 (3) | 0.031 (3) | 0.047 (3) | 0.002 (2) | 0.009 (2) | 0.001 (2) |
C17 | 0.031 (3) | 0.028 (3) | 0.074 (5) | 0.006 (2) | 0.002 (3) | −0.016 (3) |
C18 | 0.057 (4) | 0.069 (5) | 0.068 (5) | 0.024 (4) | −0.014 (4) | −0.029 (4) |
C19 | 0.066 (6) | 0.106 (7) | 0.117 (8) | 0.035 (5) | −0.045 (6) | −0.059 (6) |
C20 | 0.059 (6) | 0.097 (7) | 0.179 (12) | 0.026 (5) | −0.052 (7) | −0.085 (8) |
C21 | 0.037 (4) | 0.057 (5) | 0.206 (12) | −0.011 (3) | 0.013 (6) | −0.048 (6) |
C22 | 0.031 (3) | 0.042 (3) | 0.111 (6) | −0.004 (3) | 0.012 (3) | −0.021 (4) |
C23 | 0.031 (3) | 0.035 (3) | 0.045 (3) | −0.002 (2) | 0.005 (2) | 0.018 (3) |
C24 | 0.049 (3) | 0.043 (3) | 0.041 (3) | −0.013 (3) | 0.006 (3) | 0.016 (3) |
C25 | 0.063 (4) | 0.059 (4) | 0.057 (4) | −0.035 (4) | 0.005 (3) | 0.023 (3) |
C26 | 0.042 (4) | 0.094 (6) | 0.083 (5) | −0.017 (4) | 0.024 (4) | 0.035 (5) |
C27 | 0.040 (4) | 0.085 (5) | 0.082 (5) | 0.004 (3) | 0.028 (3) | 0.034 (4) |
C28 | 0.036 (3) | 0.049 (4) | 0.066 (4) | 0.001 (3) | 0.015 (3) | 0.021 (3) |
C29 | 0.036 (3) | 0.026 (2) | 0.039 (3) | 0.001 (2) | 0.002 (2) | 0.018 (2) |
C30 | 0.048 (3) | 0.037 (3) | 0.049 (4) | −0.011 (3) | 0.013 (3) | 0.004 (3) |
C31 | 0.080 (5) | 0.055 (4) | 0.037 (4) | −0.014 (4) | 0.008 (3) | 0.000 (3) |
C32 | 0.070 (5) | 0.047 (4) | 0.056 (4) | −0.017 (3) | −0.019 (4) | 0.007 (3) |
C33 | 0.054 (4) | 0.041 (3) | 0.068 (5) | 0.003 (3) | −0.013 (3) | 0.010 (3) |
C34 | 0.044 (3) | 0.033 (3) | 0.051 (4) | 0.008 (2) | 0.000 (3) | 0.017 (3) |
C35 | 0.030 (3) | 0.019 (2) | 0.041 (3) | −0.0015 (19) | 0.012 (2) | 0.009 (2) |
C36 | 0.032 (3) | 0.042 (3) | 0.042 (3) | −0.005 (2) | 0.011 (2) | 0.008 (2) |
C37 | 0.043 (3) | 0.065 (4) | 0.047 (4) | −0.002 (3) | 0.018 (3) | 0.008 (3) |
C38 | 0.037 (3) | 0.051 (4) | 0.072 (5) | −0.003 (3) | 0.028 (3) | 0.012 (3) |
C39 | 0.029 (3) | 0.037 (3) | 0.067 (4) | −0.005 (2) | 0.008 (3) | 0.012 (3) |
C40 | 0.040 (3) | 0.026 (2) | 0.046 (3) | −0.005 (2) | 0.010 (2) | 0.011 (2) |
C41 | 0.028 (2) | 0.033 (3) | 0.041 (3) | 0.005 (2) | 0.013 (2) | 0.011 (2) |
C42 | 0.038 (3) | 0.045 (3) | 0.064 (4) | −0.003 (3) | 0.001 (3) | 0.018 (3) |
C43 | 0.041 (3) | 0.068 (5) | 0.065 (5) | 0.010 (3) | −0.004 (3) | 0.030 (4) |
C44 | 0.029 (3) | 0.085 (5) | 0.045 (4) | 0.005 (3) | −0.004 (3) | 0.014 (3) |
C45 | 0.055 (4) | 0.065 (5) | 0.050 (4) | −0.011 (3) | −0.006 (3) | −0.005 (4) |
C46 | 0.048 (3) | 0.040 (3) | 0.048 (4) | 0.002 (3) | 0.000 (3) | −0.002 (3) |
C47 | 0.026 (2) | 0.026 (2) | 0.039 (3) | −0.001 (2) | 0.011 (2) | −0.003 (2) |
C48 | 0.028 (3) | 0.035 (3) | 0.043 (3) | 0.003 (2) | 0.006 (2) | 0.003 (2) |
C49 | 0.052 (4) | 0.045 (3) | 0.037 (3) | 0.000 (3) | 0.011 (3) | 0.000 (3) |
C50 | 0.042 (3) | 0.050 (3) | 0.054 (4) | 0.003 (3) | 0.027 (3) | 0.005 (3) |
C51 | 0.029 (3) | 0.053 (4) | 0.058 (4) | −0.001 (2) | 0.016 (3) | −0.004 (3) |
C52 | 0.029 (3) | 0.043 (3) | 0.040 (3) | −0.001 (2) | 0.008 (2) | −0.002 (2) |
C53 | 0.025 (2) | 0.026 (2) | 0.036 (3) | −0.0007 (19) | 0.009 (2) | −0.002 (2) |
C54 | 0.036 (3) | 0.023 (2) | 0.044 (3) | −0.002 (2) | 0.015 (2) | 0.001 (2) |
C55 | 0.030 (3) | 0.030 (3) | 0.054 (4) | −0.008 (2) | 0.015 (2) | −0.001 (3) |
C56 | 0.023 (2) | 0.040 (3) | 0.052 (3) | −0.008 (2) | 0.014 (2) | −0.013 (3) |
C57 | 0.030 (3) | 0.037 (3) | 0.039 (3) | 0.002 (2) | 0.005 (2) | −0.007 (2) |
C58 | 0.026 (2) | 0.029 (3) | 0.037 (3) | −0.0050 (18) | 0.010 (2) | −0.001 (2) |
C59 | 0.026 (2) | 0.039 (3) | 0.035 (3) | −0.005 (2) | 0.0083 (19) | −0.006 (3) |
C60 | 0.036 (3) | 0.037 (3) | 0.030 (3) | −0.006 (2) | 0.005 (2) | 0.000 (2) |
C61 | 0.066 (4) | 0.041 (3) | 0.032 (3) | −0.009 (3) | 0.015 (3) | −0.007 (3) |
C62 | 0.053 (3) | 0.038 (3) | 0.046 (4) | −0.015 (3) | 0.027 (3) | −0.017 (3) |
C63 | 0.035 (3) | 0.047 (3) | 0.066 (4) | −0.012 (3) | 0.023 (3) | −0.020 (3) |
C64 | 0.020 (2) | 0.060 (4) | 0.052 (4) | −0.004 (2) | 0.003 (2) | −0.013 (3) |
C65 | 0.027 (3) | 0.045 (3) | 0.031 (3) | −0.002 (2) | −0.004 (2) | −0.008 (2) |
C66 | 0.039 (3) | 0.062 (4) | 0.043 (3) | −0.012 (3) | 0.014 (3) | −0.019 (3) |
C67 | 0.055 (4) | 0.063 (4) | 0.043 (4) | −0.009 (3) | 0.010 (3) | −0.017 (3) |
C68 | 0.060 (4) | 0.051 (4) | 0.041 (4) | −0.013 (3) | −0.005 (3) | −0.011 (3) |
C69 | 0.040 (3) | 0.061 (4) | 0.041 (3) | −0.018 (3) | 0.001 (3) | −0.003 (3) |
C70 | 0.034 (3) | 0.055 (3) | 0.028 (3) | −0.009 (2) | 0.005 (2) | −0.006 (3) |
C71 | 0.022 (2) | 0.044 (3) | 0.031 (3) | 0.003 (2) | 0.0021 (19) | −0.001 (2) |
C72 | 0.104 (16) | 0.045 (6) | 0.033 (7) | 0.037 (7) | 0.003 (8) | −0.008 (5) |
C73 | 0.14 (2) | 0.045 (7) | 0.038 (6) | 0.042 (10) | 0.013 (7) | 0.002 (5) |
C74 | 0.061 (4) | 0.055 (4) | 0.050 (4) | 0.016 (3) | 0.007 (3) | 0.016 (3) |
C75 | 0.064 (12) | 0.079 (7) | 0.041 (8) | −0.031 (8) | −0.024 (8) | 0.017 (5) |
C76 | 0.063 (11) | 0.058 (8) | 0.030 (5) | −0.026 (9) | −0.008 (5) | 0.003 (5) |
C720 | 0.037 (10) | 0.037 (7) | 0.045 (9) | 0.004 (6) | 0.016 (8) | 0.002 (5) |
C730 | 0.047 (11) | 0.027 (7) | 0.056 (8) | 0.006 (7) | 0.020 (8) | 0.001 (6) |
C750 | 0.066 (15) | 0.048 (7) | 0.021 (8) | −0.018 (8) | −0.018 (9) | −0.004 (6) |
C760 | 0.048 (12) | 0.033 (7) | 0.047 (8) | −0.002 (9) | 0.011 (8) | 0.001 (6) |
W1—Br1 | 2.5927 (5) | C33—C34 | 1.389 (9) |
W1—P1 | 2.5383 (13) | C33—H331 | 0.950 |
W1—P2 | 2.5077 (12) | C34—H341 | 0.950 |
W1—P3 | 2.5543 (12) | C35—C36 | 1.390 (8) |
W1—P4 | 2.5146 (13) | C35—C40 | 1.400 (7) |
W1—N1 | 1.775 (4) | C36—C37 | 1.392 (8) |
P1—C7 | 1.863 (6) | C36—H361 | 0.950 |
P1—C11 | 1.829 (5) | C37—C38 | 1.381 (9) |
P1—C17 | 1.837 (6) | C37—H371 | 0.950 |
P2—C8 | 1.833 (5) | C38—C39 | 1.378 (9) |
P2—C23 | 1.820 (5) | C38—H381 | 0.950 |
P2—C29 | 1.835 (6) | C39—C40 | 1.383 (7) |
P3—C9 | 1.848 (5) | C39—H391 | 0.950 |
P3—C35 | 1.836 (5) | C40—H401 | 0.950 |
P3—C41 | 1.828 (6) | C41—C42 | 1.398 (8) |
P4—C10 | 1.845 (5) | C41—C46 | 1.371 (8) |
P4—C47 | 1.827 (5) | C42—C43 | 1.397 (9) |
P4—C53 | 1.828 (5) | C42—H421 | 0.950 |
P5—C5 | 1.736 (5) | C43—C44 | 1.353 (10) |
P5—C59 | 1.802 (5) | C43—H431 | 0.950 |
P5—C65 | 1.808 (5) | C44—C45 | 1.370 (10) |
P5—C71 | 1.790 (5) | C44—H441 | 0.950 |
P6—F1 | 1.597 (5) | C45—C46 | 1.391 (9) |
P6—F2 | 1.589 (5) | C45—H451 | 0.950 |
P6—F3 | 1.586 (4) | C46—H461 | 0.950 |
P6—F4 | 1.572 (5) | C47—C48 | 1.386 (8) |
P6—F5 | 1.580 (4) | C47—C52 | 1.397 (7) |
P6—F6 | 1.601 (5) | C48—C49 | 1.398 (8) |
N1—N2 | 1.312 (5) | C48—H481 | 0.950 |
N2—C1 | 1.285 (6) | C49—C50 | 1.376 (9) |
Cl1—C1 | 1.757 (5) | C49—H491 | 0.950 |
C1—C2 | 1.426 (6) | C50—C51 | 1.370 (9) |
C2—C3 | 1.427 (7) | C50—H501 | 0.950 |
C2—C6 | 1.412 (6) | C51—C52 | 1.392 (8) |
C3—C4 | 1.356 (7) | C51—H511 | 0.950 |
C3—H31 | 0.950 | C52—H521 | 0.950 |
C4—C5 | 1.445 (7) | C53—C54 | 1.396 (7) |
C4—H41 | 0.950 | C53—C58 | 1.398 (7) |
C5—C6 | 1.386 (7) | C54—C55 | 1.373 (7) |
C6—H61 | 0.950 | C54—H541 | 0.950 |
C7—C8 | 1.509 (8) | C55—C56 | 1.376 (8) |
C7—H71 | 0.950 | C55—H551 | 0.950 |
C7—H72 | 0.950 | C56—C57 | 1.393 (8) |
C8—H81 | 0.950 | C56—H561 | 0.950 |
C8—H82 | 0.950 | C57—C58 | 1.380 (7) |
C9—C10 | 1.530 (7) | C57—H571 | 0.950 |
C9—H91 | 0.950 | C58—H581 | 0.950 |
C9—H92 | 0.950 | C59—C60 | 1.401 (7) |
C10—H101 | 0.950 | C59—C64 | 1.392 (7) |
C10—H102 | 0.950 | C60—C61 | 1.374 (7) |
C11—C12 | 1.381 (7) | C60—H601 | 0.950 |
C11—C16 | 1.400 (7) | C61—C62 | 1.384 (9) |
C12—C13 | 1.397 (7) | C61—H611 | 0.950 |
C12—H121 | 0.950 | C62—C63 | 1.373 (9) |
C13—C14 | 1.372 (9) | C62—H621 | 0.950 |
C13—H131 | 0.950 | C63—C64 | 1.388 (8) |
C14—C15 | 1.371 (9) | C63—H631 | 0.950 |
C14—H141 | 0.950 | C64—H641 | 0.950 |
C15—C16 | 1.381 (8) | C65—C66 | 1.386 (8) |
C15—H151 | 0.950 | C65—C70 | 1.383 (7) |
C16—H161 | 0.950 | C66—C67 | 1.396 (8) |
C17—C18 | 1.395 (10) | C66—H661 | 0.950 |
C17—C22 | 1.406 (9) | C67—C68 | 1.367 (9) |
C18—C19 | 1.378 (11) | C67—H671 | 0.950 |
C18—H181 | 0.950 | C68—C69 | 1.382 (9) |
C19—C20 | 1.329 (17) | C68—H681 | 0.950 |
C19—H191 | 0.950 | C69—C70 | 1.392 (8) |
C20—C21 | 1.409 (17) | C69—H691 | 0.950 |
C20—H201 | 0.950 | C70—H701 | 0.950 |
C21—C22 | 1.410 (11) | C71—C72 | 1.392 (9) |
C21—H211 | 0.950 | C71—C76 | 1.390 (8) |
C22—H221 | 0.950 | C71—C720 | 1.383 (9) |
C23—C24 | 1.400 (8) | C71—C760 | 1.385 (9) |
C23—C28 | 1.397 (8) | C72—C73 | 1.390 (9) |
C24—C25 | 1.408 (8) | C72—H721 | 0.950 |
C24—H241 | 0.950 | C73—C74 | 1.391 (9) |
C25—C26 | 1.364 (11) | C73—H731 | 0.950 |
C25—H251 | 0.950 | C74—C75 | 1.370 (9) |
C26—C27 | 1.377 (11) | C74—H741 | 0.950 |
C26—H261 | 0.950 | C74—C730 | 1.383 (9) |
C27—C28 | 1.388 (8) | C74—C750 | 1.380 (9) |
C27—H271 | 0.950 | C74—H741 | 0.950 |
C28—H281 | 0.950 | C75—C76 | 1.382 (9) |
C29—C30 | 1.404 (8) | C75—H751 | 0.950 |
C29—C34 | 1.395 (8) | C76—H761 | 0.950 |
C30—C31 | 1.375 (9) | C720—C730 | 1.386 (9) |
C30—H301 | 0.950 | C720—H725 | 0.950 |
C31—C32 | 1.373 (10) | C730—H735 | 0.950 |
C31—H311 | 0.950 | C750—C760 | 1.384 (9) |
C32—C33 | 1.363 (10) | C750—H755 | 0.950 |
C32—H321 | 0.950 | C760—H765 | 0.950 |
Br1—W1—P1 | 85.36 (3) | C29—C30—C31 | 120.6 (6) |
Br1—W1—P2 | 80.17 (3) | C29—C30—H301 | 119.7 |
P1—W1—P2 | 78.48 (5) | C31—C30—H301 | 119.7 |
Br1—W1—P3 | 89.82 (3) | C30—C31—C32 | 120.7 (7) |
P1—W1—P3 | 102.93 (4) | C30—C31—H311 | 119.7 |
P2—W1—P3 | 169.78 (4) | C32—C31—H311 | 119.7 |
Br1—W1—P4 | 91.34 (3) | C31—C32—C33 | 120.1 (6) |
P1—W1—P4 | 176.33 (4) | C31—C32—H321 | 120.0 |
P2—W1—P4 | 99.40 (4) | C33—C32—H321 | 120.0 |
P3—W1—P4 | 78.63 (4) | C32—C33—C34 | 120.3 (6) |
Br1—W1—N1 | 173.60 (12) | C32—C33—H331 | 119.9 |
P1—W1—N1 | 91.52 (13) | C34—C33—H331 | 119.9 |
P2—W1—N1 | 93.74 (13) | C29—C34—C33 | 120.8 (6) |
P3—W1—N1 | 96.33 (13) | C29—C34—H341 | 119.6 |
P4—W1—N1 | 91.61 (13) | C33—C34—H341 | 119.6 |
W1—P1—C7 | 109.75 (18) | P3—C35—C36 | 121.5 (4) |
W1—P1—C11 | 123.31 (17) | P3—C35—C40 | 119.9 (4) |
C7—P1—C11 | 102.1 (2) | C36—C35—C40 | 118.5 (5) |
W1—P1—C17 | 114.93 (17) | C35—C36—C37 | 120.5 (5) |
C7—P1—C17 | 100.5 (3) | C35—C36—H361 | 119.8 |
C11—P1—C17 | 103.3 (3) | C37—C36—H361 | 119.8 |
W1—P2—C8 | 107.98 (17) | C36—C37—C38 | 120.4 (6) |
W1—P2—C23 | 114.87 (17) | C36—C37—H371 | 119.8 |
C8—P2—C23 | 103.9 (2) | C38—C37—H371 | 119.8 |
W1—P2—C29 | 121.70 (16) | C37—C38—C39 | 119.4 (5) |
C8—P2—C29 | 103.0 (2) | C37—C38—H381 | 120.3 |
C23—P2—C29 | 103.5 (3) | C39—C38—H381 | 120.3 |
W1—P3—C9 | 109.43 (17) | C38—C39—C40 | 120.9 (5) |
W1—P3—C35 | 121.93 (16) | C38—C39—H391 | 119.5 |
C9—P3—C35 | 99.2 (2) | C40—C39—H391 | 119.5 |
W1—P3—C41 | 116.45 (16) | C35—C40—C39 | 120.3 (5) |
C9—P3—C41 | 104.1 (2) | C35—C40—H401 | 119.9 |
C35—P3—C41 | 103.2 (2) | C39—C40—H401 | 119.9 |
W1—P4—C10 | 106.07 (17) | P3—C41—C42 | 120.8 (4) |
W1—P4—C47 | 118.68 (16) | P3—C41—C46 | 121.0 (4) |
C10—P4—C47 | 101.1 (2) | C42—C41—C46 | 118.2 (5) |
W1—P4—C53 | 119.36 (16) | C41—C42—C43 | 119.5 (6) |
C10—P4—C53 | 104.4 (2) | C41—C42—H421 | 120.3 |
C47—P4—C53 | 104.8 (2) | C43—C42—H421 | 120.3 |
C5—P5—C59 | 112.7 (2) | C42—C43—C44 | 122.0 (6) |
C5—P5—C65 | 108.7 (2) | C42—C43—H431 | 119.0 |
C59—P5—C65 | 109.7 (2) | C44—C43—H431 | 119.0 |
C5—P5—C71 | 109.4 (2) | C43—C44—C45 | 118.4 (5) |
C59—P5—C71 | 106.4 (2) | C43—C44—H441 | 120.8 |
C65—P5—C71 | 109.8 (2) | C45—C44—H441 | 120.8 |
F1—P6—F2 | 89.9 (3) | C44—C45—C46 | 121.1 (6) |
F1—P6—F3 | 90.3 (3) | C44—C45—H451 | 119.4 |
F2—P6—F3 | 89.5 (3) | C46—C45—H451 | 119.4 |
F1—P6—F4 | 179.6 (3) | C45—C46—C41 | 120.8 (6) |
F2—P6—F4 | 89.7 (3) | C45—C46—H461 | 119.6 |
F3—P6—F4 | 89.8 (3) | C41—C46—H461 | 119.6 |
F1—P6—F5 | 88.6 (3) | P4—C47—C48 | 122.8 (4) |
F2—P6—F5 | 178.5 (3) | P4—C47—C52 | 118.5 (4) |
F3—P6—F5 | 90.1 (2) | C48—C47—C52 | 118.6 (5) |
F4—P6—F5 | 91.7 (3) | C47—C48—C49 | 119.9 (5) |
F1—P6—F6 | 91.8 (3) | C47—C48—H481 | 120.1 |
F2—P6—F6 | 92.2 (3) | C49—C48—H481 | 120.1 |
F3—P6—F6 | 177.3 (3) | C48—C49—C50 | 121.2 (5) |
F4—P6—F6 | 88.1 (3) | C48—C49—H491 | 119.4 |
F5—P6—F6 | 88.3 (2) | C50—C49—H491 | 119.4 |
W1—N1—N2 | 164.5 (3) | C49—C50—C51 | 119.1 (5) |
N1—N2—C1 | 126.0 (4) | C49—C50—H501 | 120.4 |
Cl1—C1—N2 | 121.5 (4) | C51—C50—H501 | 120.4 |
Cl1—C1—C2 | 117.4 (4) | C50—C51—C52 | 120.7 (5) |
N2—C1—C2 | 121.0 (4) | C50—C51—H511 | 119.6 |
C1—C2—C3 | 123.9 (4) | C52—C51—H511 | 119.6 |
C1—C2—C6 | 128.2 (5) | C47—C52—C51 | 120.5 (5) |
C3—C2—C6 | 108.0 (4) | C47—C52—H521 | 119.8 |
C2—C3—C4 | 108.6 (5) | C51—C52—H521 | 119.8 |
C2—C3—H31 | 125.7 | P4—C53—C54 | 123.4 (4) |
C4—C3—H31 | 125.7 | P4—C53—C58 | 118.9 (4) |
C3—C4—C5 | 107.7 (4) | C54—C53—C58 | 117.7 (4) |
C3—C4—H41 | 126.1 | C53—C54—C55 | 121.1 (5) |
C5—C4—H41 | 126.1 | C53—C54—H541 | 119.5 |
C4—C5—P5 | 124.6 (4) | C55—C54—H541 | 119.5 |
C4—C5—C6 | 108.4 (4) | C54—C55—C56 | 120.6 (5) |
P5—C5—C6 | 126.9 (4) | C54—C55—H551 | 119.7 |
C2—C6—C5 | 107.2 (4) | C56—C55—H551 | 119.7 |
C2—C6—H61 | 126.4 | C55—C56—C57 | 119.7 (5) |
C5—C6—H61 | 126.4 | C55—C56—H561 | 120.1 |
P1—C7—C8 | 112.3 (3) | C57—C56—H561 | 120.1 |
P1—C7—H71 | 108.7 | C56—C57—C58 | 119.5 (5) |
C8—C7—H71 | 108.7 | C56—C57—H571 | 120.3 |
P1—C7—H72 | 108.7 | C58—C57—H571 | 120.3 |
C8—C7—H72 | 108.7 | C53—C58—C57 | 121.4 (4) |
H71—C7—H72 | 109.5 | C53—C58—H581 | 119.3 |
C7—C8—P2 | 110.9 (4) | C57—C58—H581 | 119.3 |
C7—C8—H81 | 109.1 | P5—C59—C60 | 119.8 (4) |
P2—C8—H81 | 109.1 | P5—C59—C64 | 121.2 (4) |
C7—C8—H82 | 109.1 | C60—C59—C64 | 118.9 (5) |
P2—C8—H82 | 109.1 | C59—C60—C61 | 120.0 (5) |
H81—C8—H82 | 109.5 | C59—C60—H601 | 120.0 |
P3—C9—C10 | 112.0 (3) | C61—C60—H601 | 120.0 |
P3—C9—H91 | 108.8 | C60—C61—C62 | 120.9 (5) |
C10—C9—H91 | 108.8 | C60—C61—H611 | 119.6 |
P3—C9—H92 | 108.8 | C62—C61—H611 | 119.6 |
C10—C9—H92 | 108.8 | C61—C62—C63 | 119.6 (5) |
H91—C9—H92 | 109.5 | C61—C62—H621 | 120.2 |
C9—C10—P4 | 110.3 (3) | C63—C62—H621 | 120.2 |
C9—C10—H101 | 109.3 | C62—C63—C64 | 120.5 (5) |
P4—C10—H101 | 109.3 | C62—C63—H631 | 119.8 |
C9—C10—H102 | 109.3 | C64—C63—H631 | 119.8 |
P4—C10—H102 | 109.3 | C59—C64—C63 | 120.2 (5) |
H101—C10—H102 | 109.5 | C59—C64—H641 | 119.9 |
P1—C11—C12 | 121.0 (4) | C63—C64—H641 | 119.9 |
P1—C11—C16 | 120.4 (4) | P5—C65—C66 | 117.2 (4) |
C12—C11—C16 | 118.5 (5) | P5—C65—C70 | 122.8 (4) |
C11—C12—C13 | 120.6 (5) | C66—C65—C70 | 120.0 (5) |
C11—C12—H121 | 119.7 | C65—C66—C67 | 119.8 (5) |
C13—C12—H121 | 119.7 | C65—C66—H661 | 120.1 |
C12—C13—C14 | 119.5 (5) | C67—C66—H661 | 120.1 |
C12—C13—H131 | 120.3 | C66—C67—C68 | 120.1 (6) |
C14—C13—H131 | 120.3 | C66—C67—H671 | 119.9 |
C13—C14—C15 | 120.9 (5) | C68—C67—H671 | 119.9 |
C13—C14—H141 | 119.5 | C67—C68—C69 | 120.1 (6) |
C15—C14—H141 | 119.5 | C67—C68—H681 | 119.9 |
C14—C15—C16 | 119.7 (5) | C69—C68—H681 | 119.9 |
C14—C15—H151 | 120.1 | C68—C69—C70 | 120.4 (5) |
C16—C15—H151 | 120.1 | C68—C69—H691 | 119.8 |
C11—C16—C15 | 120.7 (5) | C70—C69—H691 | 119.8 |
C11—C16—H161 | 119.6 | C69—C70—C65 | 119.5 (5) |
C15—C16—H161 | 119.6 | C69—C70—H701 | 120.3 |
P1—C17—C18 | 122.4 (5) | C65—C70—H701 | 120.3 |
P1—C17—C22 | 118.7 (5) | P5—C71—C72 | 120.5 (6) |
C18—C17—C22 | 118.8 (6) | P5—C71—C76 | 124.0 (8) |
C17—C18—H181 | 119.2 | C72—C71—C76 | 115.3 (9) |
C19—C18—H181 | 119.2 | P5—C71—C720 | 119.7 (7) |
C18—C19—C20 | 119.9 (10) | P5—C71—C760 | 117.3 (8) |
C18—C19—H191 | 120.0 | C720—C71—C760 | 123.0 (10) |
C20—C19—H191 | 120.0 | C71—C72—C73 | 123.0 (11) |
C19—C20—C21 | 122.0 (8) | C71—C72—H721 | 118.5 |
C19—C20—H201 | 119.0 | C73—C72—H721 | 118.5 |
C21—C20—H201 | 119.0 | C72—C73—C74 | 117.1 (12) |
C20—C21—C22 | 118.7 (9) | C72—C73—H731 | 121.4 |
C20—C21—H211 | 120.6 | C74—C73—H731 | 121.4 |
C22—C21—H211 | 120.6 | C73—C74—C75 | 123.0 (10) |
C21—C22—C17 | 119.1 (8) | C73—C74—H741 | 118.5 |
C21—C22—H221 | 120.5 | C75—C74—H741 | 118.5 |
C17—C22—H221 | 120.5 | C730—C74—C750 | 115.1 (11) |
P2—C23—C24 | 122.9 (4) | C730—C74—H741 | 117.6 |
P2—C23—C28 | 118.8 (4) | C750—C74—H741 | 126.6 |
C24—C23—C28 | 118.3 (5) | C74—C75—C76 | 116.2 (14) |
C23—C24—C25 | 120.3 (6) | C74—C75—H751 | 121.9 |
C23—C24—H241 | 119.8 | C76—C75—H751 | 121.9 |
C25—C24—H241 | 119.8 | C71—C76—C75 | 124.8 (13) |
C24—C25—C26 | 120.0 (6) | C71—C76—H761 | 117.6 |
C24—C25—H251 | 120.0 | C75—C76—H761 | 117.6 |
C26—C25—H251 | 120.0 | C71—C720—C730 | 118.4 (13) |
C25—C26—C27 | 120.3 (6) | C71—C720—H725 | 120.8 |
C25—C26—H261 | 119.8 | C730—C720—H725 | 120.8 |
C27—C26—H261 | 119.8 | C720—C730—C74 | 122.2 (13) |
C26—C27—C28 | 120.6 (7) | C720—C730—H735 | 118.9 |
C26—C27—H271 | 119.7 | C74—C730—H735 | 118.9 |
C28—C27—H271 | 119.7 | C74—C750—C760 | 126.6 (16) |
C23—C28—C27 | 120.4 (6) | C74—C750—H755 | 116.7 |
C23—C28—H281 | 119.8 | C760—C750—H755 | 116.7 |
C27—C28—H281 | 119.8 | C71—C760—C750 | 114.3 (15) |
P2—C29—C30 | 120.8 (4) | C71—C760—H765 | 122.8 |
P2—C29—C34 | 121.5 (4) | C750—C760—H765 | 122.8 |
C30—C29—C34 | 117.6 (5) | ||
Br1—W1—N1—N2 | 1 (6) | C2—C6—C5—P5 | 179.3 (6) |
W1—N1—N2—C1 | 180 (2) | N2—C1—C2—C3 | −1.4 (11) |
N1—N2—C1—Cl1 | −2.4 (12) | C1—C2—C3—C4 | 179.9 (6) |
N2—C1—C2—C6 | 179.5 (7) | C2—C3—C4—C5 | 1.1 (8) |
C1—C2—C6—C5 | 179.5 (7) | C3—C4—C5—C6 | −0.9 (6) |
Experimental details
Crystal data | |
Chemical formula | C76H66BrClN2P5W·F6P·0.6(CH2Cl2) |
Mr | 1657.27 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 150 |
a, b, c (Å) | 18.2621 (10), 14.706 (1), 28.934 (2) |
β (°) | 98.236 (3) |
V (Å3) | 7690.3 (9) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 2.28 |
Crystal size (mm) | 0.12 × 0.09 × 0.08 |
Data collection | |
Diffractometer | Nonius KappaCCD |
Absorption correction | Multi-scan (DENZO/SCALEPACK; Otwinowski & Minor, 1997) |
Tmin, Tmax | 0.79, 0.84 |
No. of measured, independent and observed [I > 3σ(I)] reflections | 17372, 17372, 9841 |
Rint | 0.027 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.036, 0.037, 1.09 |
No. of reflections | 9841 |
No. of parameters | 875 |
No. of restraints | 24 |
H-atom treatment | H-atom parameters not refined |
Δρmax, Δρmin (e Å−3) | 1.01, −0.70 |
Computer programs: COLLECT (Nonius, 2001), DENZO/SCALEPACK (Otwinowski & Minor, 1997), SIR92 (Altomare et al., 1994), CRYSTALS (Betteridge et al., 2003), CAMERON (Watkin et al., 1996).
W1—Br1 | 2.5927 (5) | N2—C1 | 1.285 (6) |
W1—P1 | 2.5383 (13) | Cl1—C1 | 1.757 (5) |
W1—P2 | 2.5077 (12) | C1—C2 | 1.426 (6) |
W1—P3 | 2.5543 (12) | C2—C3 | 1.427 (7) |
W1—P4 | 2.5146 (13) | C2—C6 | 1.412 (6) |
W1—N1 | 1.775 (4) | C3—C4 | 1.356 (7) |
P5—C5 | 1.736 (5) | C4—C5 | 1.445 (7) |
N1—N2 | 1.312 (5) | C5—C6 | 1.386 (7) |
W1—N1—N2 | 164.5 (3) | C3—C2—C6 | 108.0 (4) |
N1—N2—C1 | 126.0 (4) | C2—C3—C4 | 108.6 (5) |
Cl1—C1—N2 | 121.5 (4) | C3—C4—C5 | 107.7 (4) |
Cl1—C1—C2 | 117.4 (4) | C4—C5—P5 | 124.6 (4) |
N2—C1—C2 | 121.0 (4) | C4—C5—C6 | 108.4 (4) |
C1—C2—C3 | 123.9 (4) | P5—C5—C6 | 126.9 (4) |
C1—C2—C6 | 128.2 (5) | C2—C6—C5 | 107.2 (4) |
Br1—W1—N1—N2 | 1 (6) | C2—C6—C5—P5 | 179.3 (6) |
W1—N1—N2—C1 | 180 (2) | N2—C1—C2—C3 | −1.4 (11) |
N1—N2—C1—Cl1 | −2.4 (12) | C1—C2—C3—C4 | 179.9 (6) |
N2—C1—C2—C6 | 179.5 (7) | C2—C3—C4—C5 | 1.1 (8) |
C1—C2—C6—C5 | 179.5 (7) | C3—C4—C5—C6 | −0.9 (6) |
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Transition metal complexes containing extended conjugated organic ligands have the potential to display a wide range of novel electronic, magnetic and optical properties (Chisholm & Macintosh, 2005; Ceccon et al., 2004; Schwab et al., 1999) and thus to provide a basis for the development of molecular materials and devices (Low, 2005; Chisholm, 2000). One of the challenges in synthesizing such complexes is to design ligands that provide an extended conjugation pathway between multiple metal or metal/metalloid centres. Examples of ligands so far investigated for this purpose include polyethynylenes (Zheng et al., 2004; Antonova et al., 2004), 1,4-phenylenediethynylene (Nguyen et al., 1999; Chawdhury et al., 1998) and 4-ethynylpyridine (Ronson et al., 2006; Zuo et al., 2002). The use of dinitrogen-derived ligands, containing, for example, diazenido(1-), M═N═N—R, or diazoalkane, M≡N—N═CR2, moieties has been much less explored in this context, although we have recently shown that such complexes can have significant utility in the assembly of extended-chain polynuclear transition metal complexes (Colquhoun et al., 2007).
The cationic dichlorodiazomethane complex trans-[BrW(dppe)2(N2CCl2]+, (I), is readily obtained from trans-W(dppe)2(N2)2 via the hydrazido(2-) complex trans-[BrW(dppe)2(NNH2)]+, and undergoes facile replacement of one or both chloro-substituents by a wide range of nitrogen- and oxygen-based nucleophiles (Colquhoun, 1984). Here, we report the first example of such a reaction involving a carbon-centred nucleophile, (triphenylphosphonio)cyclopentadienide, which (probably for steric reasons) replaces just one of the two chloro-substituents at C to give trans-[BrW(dppe)2{N2C(Cl)(C5H3PPh3)}]+, isolated as the title hexafluorophosphate salt, (II).
Two valence-bond structures, (a) and (b) (Fig. 1), may be drawn for the cation of (II), suggesting the possibility of extended delocalization of electron density between W and P via the π-system of the fully conjugated cyclopentadienylidene(chloro)diazomethane ligand. The structural features associated with such delocalization would be expected to include near-coplanarity of the entire metal–ligand framework from W to P, some degree of equalization of bond distances between the exocyclic and endocyclic C atoms involved in delocalization, and some degree of shortening of the P—Ccyclopentadienylidene bond relative to the adjacent P—Cphenyl bonds. To determine whether such geometric effects can in fact be observed, a single-crystal X-ray study of complex (II) was undertaken.
Compound (II) crystallizes with discrete cations and anions, in the form of a dichloromethane solvate. One of the phenyl rings of the triphenylphosphonium residue is rotationally disordered about the P5—C71 bond, but for clarity only one of the two orientations found is shown in Fig. 2. The metal–ligand system between atoms W1 and P5 exhibits a very high degree of coplanarity, with atoms W1 and N2 lying only 0.019 and 0.026 Å, respectively, out of the mean metal–ligand plane, and no other ligand atom being displaced from this plane by more than 0.01 Å (Fig. 3). Such coplanarity is certainly consistent with a degree of delocalization throughout the metal–ligand π-system, and an analysis of bond lengths tends to confirm this.
Thus, although the pattern of C—C bond lengths (Table 1) is, at first sight, compatible simply with canonical form (a), there are a number of features of the structure which also seem to require a significant contribution from form (b). For example, the endocyclic C2—C6 and exocyclic C1—C2 bond lengths differ by only 0.014 Å rather than showing the ca 0.18 Å difference expected between a single and a double C—C bond (Pauling, 1960). Moreover, the endocyclic double bond C5═C6, which could be involved in long-range delocalization, is indeed lengthened slightly relative to the `uninvolved' double bond C3—C4. Finally, the bond from P to the C5 ring (P5—C5) is significantly shorter than the three adjacent P5—C bonds to phenyl (average 1.800 Å), once again consistent with a contribution from canonical form (b). The W—N bond length, at 1.775 (4) Å, is longer than that normally associated with a W≡N triple bond (Pyykko et al., 2005), whilst the N—N bond distance, at 1.312 (5) Å, represents a bond order of ca 1.5 (Allen et al., 1987). The W—N and N—N bond lengths thus also imply contributions to the structure from both canonical forms (a) and (b). The geometry at N1 is noticeably distorted from linear [W1—N1—N2 = 164.5 (3)°] as a result of steric repulsions between the chloro-substituent Cl1 and its adjacent diphosphine ligand.
The variations in bond lengths from those expected solely on the basis of canonical form (a), together with the coplanarity of the W1—N1—N2—C1(Cl1)—C5H3—P5 fragment and the torsion angles within the fragment, are thus fully compatible with delocalization of electron density throughout the metal–ligand π-system. Although the observed bond lengths do show some discrepancies from the bond orders suggested by Fig. 1 (notably the inequality of bonds C2—C3 and C3—C4), the overall pattern of bond lengths is clearly very much more consistent with the bond orders for this `averaged' model than for either canonical form alone.
This structural analysis clearly demonstrates that the tungsten(II)–dinitrogen unit is a powerful π-electron donor, with the ability to transfer electron density from the metal to a distant acceptor centre through an extended conjugated ligand system. As a consequence, complexes of this type could have potential application as non-linear optical materials and molecular semiconductors.