metal-organic compounds
Dibromidooxido[(Z)-N′-(propan-2-ylidene)benzohydrazidato](triphenylphosphane)rhenium(V)
aNelson Mandela Metropolitan University, Summerstrand Campus, Department of Chemistry, University Way, Summerstrand, PO Box 77000, Port Elizabeth, 6031, South Africa
*Correspondence e-mail: richard.betz@webmail.co.za
The 2(C10H11N2O)O(C18H15P)], contains two molecules. In each of the two molecules the metal atom is octahedrally coordinated, the bromido ligands being cis-orientated. The chelate ligand is present in its imine-tautomeric form. In the crystal, C—H⋯Br contacts connect the molecules into chains along [101]. The shortest intercentroid distance between two aromatic rings was found to be 3.906 (2) Å.
of the title neutral rhenium(V) coordination compound, [ReBrRelated literature
For the crystal structures of rhenium(I), rhenium(III) and rhenium(V) metal complexes featuring tridentate ONX (X = O, N, S)-donor see: Potgieter et al. (2010). For graph-set analysis of hydrogen bonds, see: Etter et al. (1990); Bernstein et al. (1995). For puckering analysis, see: Cremer & Pople (1975). For general information about radiopharmaceuticals, see: Gerber et al. (2011).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2010); cell SAINT (Bruker, 2010); data reduction: SAINT; program(s) used to solve structure: SIR97 (Altomare et al., 1999); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEPIII (Farrugia, 1997) and Mercury (Macrae et al., 2008); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2009).
Supporting information
https://doi.org/10.1107/S1600536811035811/ff2026sup1.cif
contains datablocks I, global. DOI:Supporting information file. DOI: https://doi.org/10.1107/S1600536811035811/ff2026Isup2.cdx
Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536811035811/ff2026Isup3.hkl
Benzhydrazide and trans-[ReOBr3(PPh3)2] were refluxed in acetone for 5 h. After cooling to room temperature and filtration the filtrate was stored at room temperature upon which crystals formed in the course of a couple of days.
Carbon-bound H atoms were placed in calculated positions (C—H 0.95 Å for aromatic C atoms, C—H 0.98 Å for methyl groups) and were included in the
in the riding model approximation, with U(H) set to 1.2Ueq(C) for aromatic carbon atoms and U(H) set to 1.5Ueq(C) for methyl groups.Next to cardiovascular diseases, cancer has become one of the main fatal diseases in industrialized countries. Apart from classical surgery, chemo- and radiotherapeutic treatments have entered the arsenal of possible cures for certain types of cancer. All methods, however, suffer from their own set of problematic side-effects and, as a consequence, the development of radiopharmaceuticals – combining the advantages of chemotherapy as well as radiation methods while at the same time avoiding their unique respective undesired side-effects – has been a topic of research (Gerber et al., 2011). Tailoring and fine-tuning of the envisioned radiopharmaceuticals' properties such as
and, in particular, inertness is of paramount importance with respect to possible future in vivo applications in contemporary medicine and requires sound knowledge about structural parameters of the ligands applied if a more heuristic approach in the synthesis is to triumph over pure trial-and-error as it is encountered in this specific field of coordination chemistry up to the present day. In continuation of our interest in rhenium-based coordination compounds that might serve as radiopharmaceuticals, we determined the molecular and of the title compound. Information about the crystal structures of rhenium coordination compounds with the central atom in different oxidation states is apparent in the literature (Potgieter et al., 2010).The central atom in both molecules of the τ = 4.3 °) precludes a (Cremer & Pople, 1975) in the first molecule of the asymmetric unite, the corresponding five-membered ring in the second molecule adopts an conformation on the rhenium atom (Re2E, Q2 = 0.076 (3) Å, π2 = 358 (3) °). The central atom is displaced by 0.184 (1) Å and 0.188 (1) Å, respectively, from the plane defined by the bromido ligands as well as the coordinating nitrogen atom and phosphorus atom (Fig. 1).
is hexacoordinate. The ligand sphere features one chelate ligand which is present in its tautomeric imine form. Both oxygen atoms are in trans-position, the bromido ligands are cis-orientated. While the small puckering amplitude of one of the five-membered chelate rings (In the crystal, C–H···Br contacts can be observed whose range falls by more than 0.1 Å below the sum of van-der-Waals radii of the respective atoms. These are supported exclusively by hydrogen atoms of phenyl groups on the triphenylphosphane ligand and involve hydrogen atoms in ortho as well as in meta position as donors and the bromido ligand in trans-position to the coordinating phosphorus atom as acceptors. In terms of graph-set analysis (Etter et al., 1990; Bernstein et al., 1995), the descriptor for these contacts is DD on the unitary level. In total, the molecules are connected to chains along [1 0 1] (Fig. 2). The shortest intercentroid distance between two centers of gravity was found at 3.906 (2) Å.
For the crystal structures of rhenium(I), rhenium(III) and rhenium(V) metal complexes featuring tridentate ONX (X = O, N, S)-donor
see: Potgieter et al. (2010). For graph-set analysis of hydrogen bonds, see: Etter et al. (1990); Bernstein et al. (1995). For puckering analysis, see: Cremer & Pople (1975). For general information about radiopharmaceuticals, see: Gerber et al. (2011).Data collection: APEX2 (Bruker, 2010); cell
SAINT (Bruker, 2010); data reduction: SAINT (Bruker, 2010); program(s) used to solve structure: SIR97 (Altomare et al., 1999); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEPIII (Farrugia, 1997) and Mercury (Macrae et al., 2008); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).[ReBr2(C10H11N2O)O(C18H15P)] | F(000) = 3072 |
Mr = 799.50 | Dx = 1.927 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71069 Å |
Hall symbol: -P 2ybc | Cell parameters from 9749 reflections |
a = 19.1130 (5) Å | θ = 2.9–28.3° |
b = 18.3910 (4) Å | µ = 7.40 mm−1 |
c = 15.8140 (4) Å | T = 200 K |
β = 97.410 (1)° | Platelet, green |
V = 5512.3 (2) Å3 | 0.39 × 0.35 × 0.16 mm |
Z = 8 |
Bruker APEXII CCD diffractometer | 13695 independent reflections |
Radiation source: fine-focus sealed tube | 11062 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.031 |
φ and ω scans | θmax = 28.3°, θmin = 1.5° |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | h = −25→25 |
Tmin = 0.589, Tmax = 1.000 | k = −24→20 |
50272 measured reflections | l = −21→20 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.028 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.066 | H-atom parameters constrained |
S = 1.11 | w = 1/[σ2(Fo2) + (0.0171P)2 + 13.1603P] where P = (Fo2 + 2Fc2)/3 |
13695 reflections | (Δ/σ)max = 0.003 |
649 parameters | Δρmax = 1.11 e Å−3 |
0 restraints | Δρmin = −1.33 e Å−3 |
[ReBr2(C10H11N2O)O(C18H15P)] | V = 5512.3 (2) Å3 |
Mr = 799.50 | Z = 8 |
Monoclinic, P21/c | Mo Kα radiation |
a = 19.1130 (5) Å | µ = 7.40 mm−1 |
b = 18.3910 (4) Å | T = 200 K |
c = 15.8140 (4) Å | 0.39 × 0.35 × 0.16 mm |
β = 97.410 (1)° |
Bruker APEXII CCD diffractometer | 13695 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | 11062 reflections with I > 2σ(I) |
Tmin = 0.589, Tmax = 1.000 | Rint = 0.031 |
50272 measured reflections |
R[F2 > 2σ(F2)] = 0.028 | 0 restraints |
wR(F2) = 0.066 | H-atom parameters constrained |
S = 1.11 | w = 1/[σ2(Fo2) + (0.0171P)2 + 13.1603P] where P = (Fo2 + 2Fc2)/3 |
13695 reflections | Δρmax = 1.11 e Å−3 |
649 parameters | Δρmin = −1.33 e Å−3 |
x | y | z | Uiso*/Ueq | ||
Re1 | 0.735701 (7) | 0.329200 (8) | 0.354383 (9) | 0.01810 (4) | |
Br1 | 0.79252 (2) | 0.26176 (2) | 0.24550 (3) | 0.02955 (9) | |
Br2 | 0.85659 (2) | 0.37295 (2) | 0.41703 (3) | 0.03182 (9) | |
P1 | 0.61621 (5) | 0.29731 (5) | 0.28519 (6) | 0.01951 (19) | |
O1 | 0.72398 (14) | 0.41638 (13) | 0.27545 (15) | 0.0217 (5) | |
O2 | 0.71940 (14) | 0.26514 (14) | 0.42482 (16) | 0.0255 (6) | |
N1 | 0.69989 (17) | 0.41714 (16) | 0.42803 (19) | 0.0214 (6) | |
N2 | 0.68319 (17) | 0.48183 (17) | 0.3824 (2) | 0.0241 (7) | |
C1 | 0.69745 (19) | 0.47580 (19) | 0.3050 (2) | 0.0201 (7) | |
C2 | 0.6947 (2) | 0.4213 (2) | 0.5092 (2) | 0.0289 (9) | |
C3 | 0.6707 (3) | 0.4897 (3) | 0.5471 (3) | 0.0453 (12) | |
H311 | 0.7091 | 0.5254 | 0.5522 | 0.068* | |
H321 | 0.6575 | 0.4794 | 0.6037 | 0.068* | |
H331 | 0.6299 | 0.5093 | 0.5103 | 0.068* | |
C4 | 0.7118 (3) | 0.3590 (3) | 0.5684 (3) | 0.0494 (14) | |
H411 | 0.6718 | 0.3252 | 0.5635 | 0.074* | |
H421 | 0.7212 | 0.3770 | 0.6271 | 0.074* | |
H431 | 0.7537 | 0.3338 | 0.5534 | 0.074* | |
C11 | 0.68113 (19) | 0.5372 (2) | 0.2456 (2) | 0.0218 (8) | |
C12 | 0.6662 (2) | 0.6056 (2) | 0.2763 (3) | 0.0278 (9) | |
H12 | 0.6682 | 0.6135 | 0.3359 | 0.033* | |
C13 | 0.6484 (2) | 0.6622 (2) | 0.2198 (3) | 0.0335 (10) | |
H13 | 0.6379 | 0.7089 | 0.2407 | 0.040* | |
C14 | 0.6458 (2) | 0.6509 (2) | 0.1333 (3) | 0.0356 (10) | |
H14 | 0.6338 | 0.6899 | 0.0948 | 0.043* | |
C15 | 0.6607 (2) | 0.5832 (2) | 0.1023 (3) | 0.0362 (10) | |
H15 | 0.6587 | 0.5757 | 0.0426 | 0.043* | |
C16 | 0.6784 (2) | 0.5264 (2) | 0.1581 (3) | 0.0289 (9) | |
H16 | 0.6888 | 0.4799 | 0.1368 | 0.035* | |
C21 | 0.5865 (2) | 0.3391 (2) | 0.1828 (2) | 0.0237 (8) | |
C22 | 0.5194 (2) | 0.3683 (3) | 0.1637 (3) | 0.0364 (10) | |
H22 | 0.4877 | 0.3677 | 0.2053 | 0.044* | |
C23 | 0.4984 (3) | 0.3984 (3) | 0.0841 (3) | 0.0475 (13) | |
H23 | 0.4525 | 0.4187 | 0.0714 | 0.057* | |
C24 | 0.5439 (3) | 0.3990 (3) | 0.0233 (3) | 0.0439 (12) | |
H24 | 0.5296 | 0.4203 | −0.0309 | 0.053* | |
C25 | 0.6101 (3) | 0.3688 (3) | 0.0409 (3) | 0.0394 (11) | |
H25 | 0.6411 | 0.3686 | −0.0015 | 0.047* | |
C26 | 0.6317 (2) | 0.3389 (2) | 0.1204 (3) | 0.0295 (9) | |
H26 | 0.6775 | 0.3182 | 0.1324 | 0.035* | |
C31 | 0.5533 (2) | 0.3228 (2) | 0.3572 (2) | 0.0235 (8) | |
C32 | 0.5277 (2) | 0.2710 (2) | 0.4097 (3) | 0.0333 (10) | |
H32 | 0.5390 | 0.2211 | 0.4036 | 0.040* | |
C33 | 0.4857 (3) | 0.2918 (3) | 0.4709 (3) | 0.0430 (12) | |
H33 | 0.4689 | 0.2564 | 0.5071 | 0.052* | |
C34 | 0.4686 (3) | 0.3640 (3) | 0.4792 (3) | 0.0429 (12) | |
H34 | 0.4394 | 0.3782 | 0.5205 | 0.051* | |
C35 | 0.4938 (2) | 0.4158 (3) | 0.4274 (3) | 0.0376 (10) | |
H35 | 0.4819 | 0.4655 | 0.4334 | 0.045* | |
C36 | 0.5362 (2) | 0.3956 (2) | 0.3673 (3) | 0.0288 (9) | |
H36 | 0.5538 | 0.4316 | 0.3324 | 0.035* | |
C41 | 0.6015 (2) | 0.2002 (2) | 0.2683 (2) | 0.0224 (8) | |
C42 | 0.5376 (2) | 0.1775 (2) | 0.2246 (3) | 0.0363 (10) | |
H42 | 0.5043 | 0.2126 | 0.2007 | 0.044* | |
C43 | 0.5220 (2) | 0.1044 (2) | 0.2156 (3) | 0.0425 (12) | |
H43 | 0.4781 | 0.0895 | 0.1854 | 0.051* | |
C44 | 0.5698 (2) | 0.0531 (2) | 0.2502 (3) | 0.0371 (10) | |
H44 | 0.5587 | 0.0028 | 0.2445 | 0.045* | |
C45 | 0.6337 (2) | 0.0747 (2) | 0.2931 (3) | 0.0348 (10) | |
H45 | 0.6668 | 0.0392 | 0.3164 | 0.042* | |
C46 | 0.6499 (2) | 0.1481 (2) | 0.3026 (3) | 0.0281 (9) | |
H46 | 0.6940 | 0.1628 | 0.3323 | 0.034* | |
Re2 | 0.234120 (8) | 0.330538 (8) | 0.174643 (9) | 0.01962 (4) | |
Br3 | 0.34651 (2) | 0.37327 (2) | 0.26052 (3) | 0.03643 (10) | |
Br4 | 0.30700 (2) | 0.27118 (2) | 0.07404 (3) | 0.03180 (9) | |
P2 | 0.12037 (5) | 0.30358 (5) | 0.08588 (6) | 0.01950 (19) | |
O3 | 0.22884 (14) | 0.42150 (13) | 0.10244 (16) | 0.0233 (6) | |
O4 | 0.21229 (15) | 0.26075 (15) | 0.23405 (16) | 0.0263 (6) | |
N3 | 0.18502 (17) | 0.41223 (17) | 0.24467 (19) | 0.0233 (7) | |
N4 | 0.17059 (18) | 0.47831 (17) | 0.20169 (19) | 0.0246 (7) | |
C5 | 0.19517 (19) | 0.4780 (2) | 0.1291 (2) | 0.0208 (7) | |
C6 | 0.1668 (2) | 0.4106 (2) | 0.3211 (3) | 0.0335 (10) | |
C7 | 0.1285 (3) | 0.4726 (3) | 0.3551 (3) | 0.0473 (13) | |
H711 | 0.0797 | 0.4582 | 0.3592 | 0.071* | |
H721 | 0.1288 | 0.5143 | 0.3166 | 0.071* | |
H731 | 0.1520 | 0.4860 | 0.4117 | 0.071* | |
C8 | 0.1822 (3) | 0.3458 (3) | 0.3778 (3) | 0.0515 (14) | |
H811 | 0.2286 | 0.3260 | 0.3701 | 0.077* | |
H821 | 0.1459 | 0.3087 | 0.3629 | 0.077* | |
H831 | 0.1822 | 0.3604 | 0.4374 | 0.077* | |
C51 | 0.1850 (2) | 0.5422 (2) | 0.0732 (2) | 0.0227 (8) | |
C52 | 0.1554 (2) | 0.6056 (2) | 0.1016 (3) | 0.0281 (9) | |
H52 | 0.1420 | 0.6076 | 0.1573 | 0.034* | |
C53 | 0.1455 (2) | 0.6653 (2) | 0.0489 (3) | 0.0318 (9) | |
H53 | 0.1259 | 0.7086 | 0.0687 | 0.038* | |
C54 | 0.1640 (2) | 0.6627 (2) | −0.0328 (3) | 0.0337 (10) | |
H54 | 0.1565 | 0.7039 | −0.0692 | 0.040* | |
C55 | 0.1935 (2) | 0.6000 (2) | −0.0616 (3) | 0.0357 (10) | |
H55 | 0.2064 | 0.5981 | −0.1176 | 0.043* | |
C56 | 0.2042 (2) | 0.5402 (2) | −0.0087 (3) | 0.0284 (9) | |
H56 | 0.2248 | 0.4974 | −0.0283 | 0.034* | |
C61 | 0.1077 (2) | 0.3279 (2) | −0.0267 (2) | 0.0229 (8) | |
C62 | 0.1628 (2) | 0.3508 (2) | −0.0694 (2) | 0.0258 (8) | |
H62 | 0.2091 | 0.3548 | −0.0397 | 0.031* | |
C63 | 0.1504 (2) | 0.3678 (2) | −0.1550 (2) | 0.0308 (9) | |
H63 | 0.1883 | 0.3834 | −0.1840 | 0.037* | |
C64 | 0.0835 (2) | 0.3623 (2) | −0.1987 (2) | 0.0334 (10) | |
H64 | 0.0751 | 0.3746 | −0.2574 | 0.040* | |
C65 | 0.0284 (2) | 0.3389 (3) | −0.1569 (3) | 0.0367 (10) | |
H65 | −0.0177 | 0.3345 | −0.1871 | 0.044* | |
C66 | 0.0404 (2) | 0.3218 (2) | −0.0714 (3) | 0.0330 (9) | |
H66 | 0.0024 | 0.3058 | −0.0428 | 0.040* | |
C71 | 0.0498 (2) | 0.3505 (2) | 0.1299 (2) | 0.0241 (8) | |
C72 | 0.0273 (2) | 0.3236 (2) | 0.2048 (3) | 0.0346 (10) | |
H72 | 0.0458 | 0.2789 | 0.2281 | 0.042* | |
C73 | −0.0212 (3) | 0.3611 (3) | 0.2450 (3) | 0.0460 (12) | |
H73 | −0.0368 | 0.3421 | 0.2952 | 0.055* | |
C74 | −0.0471 (3) | 0.4268 (3) | 0.2117 (3) | 0.0491 (13) | |
H74 | −0.0806 | 0.4530 | 0.2392 | 0.059* | |
C75 | −0.0246 (3) | 0.4544 (3) | 0.1392 (3) | 0.0445 (12) | |
H75 | −0.0424 | 0.4998 | 0.1172 | 0.053* | |
C76 | 0.0236 (2) | 0.4168 (2) | 0.0980 (3) | 0.0323 (9) | |
H76 | 0.0389 | 0.4363 | 0.0478 | 0.039* | |
C81 | 0.0972 (2) | 0.2071 (2) | 0.0871 (2) | 0.0224 (8) | |
C82 | 0.1500 (2) | 0.1548 (2) | 0.0970 (2) | 0.0261 (8) | |
H82 | 0.1981 | 0.1693 | 0.1058 | 0.031* | |
C83 | 0.1329 (2) | 0.0814 (2) | 0.0944 (3) | 0.0309 (9) | |
H83 | 0.1694 | 0.0460 | 0.1010 | 0.037* | |
C84 | 0.0632 (2) | 0.0598 (2) | 0.0822 (3) | 0.0329 (10) | |
H84 | 0.0516 | 0.0096 | 0.0806 | 0.039* | |
C85 | 0.0101 (2) | 0.1115 (2) | 0.0723 (3) | 0.0354 (10) | |
H85 | −0.0379 | 0.0967 | 0.0637 | 0.043* | |
C86 | 0.0270 (2) | 0.1849 (2) | 0.0749 (3) | 0.0311 (9) | |
H86 | −0.0096 | 0.2202 | 0.0684 | 0.037* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Re1 | 0.01965 (7) | 0.01528 (7) | 0.01927 (7) | 0.00080 (6) | 0.00211 (5) | 0.00075 (5) |
Br1 | 0.0336 (2) | 0.0283 (2) | 0.02781 (19) | 0.00461 (17) | 0.00804 (16) | −0.00207 (16) |
Br2 | 0.0251 (2) | 0.0300 (2) | 0.0393 (2) | −0.00504 (17) | 0.00004 (17) | −0.00410 (18) |
P1 | 0.0186 (5) | 0.0168 (4) | 0.0226 (4) | 0.0018 (4) | 0.0007 (4) | 0.0004 (4) |
O1 | 0.0285 (14) | 0.0158 (12) | 0.0210 (12) | 0.0032 (11) | 0.0046 (11) | 0.0015 (10) |
O2 | 0.0267 (14) | 0.0231 (14) | 0.0263 (14) | 0.0032 (11) | 0.0024 (11) | 0.0039 (11) |
N1 | 0.0257 (17) | 0.0173 (15) | 0.0213 (15) | 0.0032 (13) | 0.0032 (13) | −0.0004 (12) |
N2 | 0.0287 (17) | 0.0183 (16) | 0.0248 (16) | 0.0028 (14) | 0.0014 (13) | 0.0013 (13) |
C1 | 0.0172 (17) | 0.0178 (18) | 0.0246 (18) | −0.0031 (14) | −0.0002 (14) | −0.0013 (14) |
C2 | 0.033 (2) | 0.029 (2) | 0.0251 (19) | 0.0011 (18) | 0.0053 (17) | −0.0027 (16) |
C3 | 0.062 (3) | 0.045 (3) | 0.030 (2) | 0.016 (3) | 0.011 (2) | −0.010 (2) |
C4 | 0.083 (4) | 0.041 (3) | 0.026 (2) | 0.014 (3) | 0.012 (2) | 0.008 (2) |
C11 | 0.0202 (18) | 0.0181 (18) | 0.0271 (19) | 0.0004 (15) | 0.0032 (15) | 0.0023 (15) |
C12 | 0.031 (2) | 0.0198 (19) | 0.033 (2) | −0.0027 (17) | 0.0050 (17) | 0.0001 (16) |
C13 | 0.033 (2) | 0.019 (2) | 0.049 (3) | 0.0045 (17) | 0.009 (2) | 0.0052 (18) |
C14 | 0.032 (2) | 0.032 (2) | 0.043 (2) | 0.0039 (19) | 0.0039 (19) | 0.018 (2) |
C15 | 0.041 (3) | 0.035 (2) | 0.032 (2) | 0.002 (2) | 0.0011 (19) | 0.0102 (19) |
C16 | 0.035 (2) | 0.024 (2) | 0.028 (2) | 0.0020 (17) | 0.0047 (17) | 0.0019 (16) |
C21 | 0.029 (2) | 0.0169 (18) | 0.0239 (18) | 0.0008 (15) | −0.0010 (15) | 0.0008 (14) |
C22 | 0.034 (2) | 0.040 (3) | 0.034 (2) | 0.009 (2) | −0.0013 (19) | 0.000 (2) |
C23 | 0.050 (3) | 0.048 (3) | 0.039 (3) | 0.019 (3) | −0.013 (2) | 0.003 (2) |
C24 | 0.066 (4) | 0.033 (2) | 0.028 (2) | 0.000 (2) | −0.011 (2) | 0.0034 (19) |
C25 | 0.055 (3) | 0.040 (3) | 0.022 (2) | −0.013 (2) | 0.001 (2) | −0.0006 (18) |
C26 | 0.031 (2) | 0.030 (2) | 0.027 (2) | −0.0029 (18) | 0.0010 (16) | −0.0032 (17) |
C31 | 0.0187 (18) | 0.025 (2) | 0.0259 (19) | 0.0029 (16) | 0.0003 (15) | −0.0008 (15) |
C32 | 0.037 (2) | 0.030 (2) | 0.034 (2) | 0.0067 (19) | 0.0094 (19) | 0.0039 (18) |
C33 | 0.044 (3) | 0.052 (3) | 0.035 (2) | 0.006 (2) | 0.015 (2) | 0.006 (2) |
C34 | 0.038 (3) | 0.062 (3) | 0.030 (2) | 0.015 (2) | 0.010 (2) | −0.007 (2) |
C35 | 0.032 (2) | 0.037 (3) | 0.044 (3) | 0.010 (2) | 0.003 (2) | −0.011 (2) |
C36 | 0.024 (2) | 0.025 (2) | 0.037 (2) | 0.0036 (17) | 0.0036 (17) | −0.0046 (17) |
C41 | 0.0214 (19) | 0.0181 (18) | 0.0279 (19) | 0.0010 (15) | 0.0042 (15) | −0.0020 (15) |
C42 | 0.032 (2) | 0.025 (2) | 0.048 (3) | 0.0042 (19) | −0.009 (2) | −0.0017 (19) |
C43 | 0.031 (2) | 0.030 (2) | 0.063 (3) | −0.004 (2) | −0.008 (2) | −0.009 (2) |
C44 | 0.039 (3) | 0.020 (2) | 0.052 (3) | −0.0037 (19) | 0.002 (2) | −0.0067 (19) |
C45 | 0.032 (2) | 0.021 (2) | 0.050 (3) | 0.0038 (18) | −0.003 (2) | −0.0011 (19) |
C46 | 0.026 (2) | 0.0202 (19) | 0.037 (2) | −0.0003 (16) | 0.0000 (17) | −0.0027 (17) |
Re2 | 0.02176 (8) | 0.01789 (7) | 0.01966 (7) | −0.00075 (6) | 0.00433 (5) | 0.00207 (5) |
Br3 | 0.0303 (2) | 0.0309 (2) | 0.0458 (2) | −0.00655 (18) | −0.00375 (18) | −0.00186 (19) |
Br4 | 0.0334 (2) | 0.0324 (2) | 0.0322 (2) | 0.00594 (18) | 0.01408 (17) | 0.00429 (17) |
P2 | 0.0210 (5) | 0.0188 (4) | 0.0194 (4) | 0.0006 (4) | 0.0053 (4) | 0.0011 (4) |
O3 | 0.0292 (14) | 0.0176 (13) | 0.0243 (13) | 0.0014 (11) | 0.0077 (11) | 0.0033 (10) |
O4 | 0.0303 (15) | 0.0265 (14) | 0.0219 (13) | −0.0014 (12) | 0.0025 (11) | 0.0034 (11) |
N3 | 0.0295 (17) | 0.0184 (16) | 0.0220 (15) | −0.0019 (13) | 0.0039 (13) | −0.0001 (12) |
N4 | 0.0323 (18) | 0.0196 (16) | 0.0221 (15) | 0.0000 (14) | 0.0041 (13) | 0.0003 (13) |
C5 | 0.0195 (18) | 0.0201 (18) | 0.0218 (17) | −0.0039 (15) | −0.0011 (14) | −0.0022 (14) |
C6 | 0.047 (3) | 0.033 (2) | 0.0221 (19) | −0.002 (2) | 0.0112 (18) | −0.0043 (17) |
C7 | 0.067 (4) | 0.047 (3) | 0.033 (2) | 0.004 (3) | 0.025 (2) | −0.007 (2) |
C8 | 0.092 (4) | 0.044 (3) | 0.022 (2) | 0.006 (3) | 0.020 (2) | 0.006 (2) |
C51 | 0.0203 (18) | 0.0203 (19) | 0.0267 (19) | −0.0035 (15) | 0.0005 (15) | 0.0024 (15) |
C52 | 0.027 (2) | 0.023 (2) | 0.034 (2) | −0.0011 (17) | 0.0030 (17) | −0.0008 (17) |
C53 | 0.026 (2) | 0.020 (2) | 0.047 (3) | 0.0011 (17) | −0.0019 (18) | −0.0033 (18) |
C54 | 0.032 (2) | 0.023 (2) | 0.043 (2) | −0.0047 (18) | −0.0029 (19) | 0.0092 (18) |
C55 | 0.043 (3) | 0.033 (2) | 0.032 (2) | −0.002 (2) | 0.009 (2) | 0.0068 (18) |
C56 | 0.034 (2) | 0.022 (2) | 0.031 (2) | −0.0009 (17) | 0.0071 (17) | 0.0054 (16) |
C61 | 0.030 (2) | 0.0203 (18) | 0.0189 (17) | 0.0047 (16) | 0.0056 (15) | 0.0025 (14) |
C62 | 0.031 (2) | 0.0233 (19) | 0.0238 (19) | −0.0021 (17) | 0.0065 (16) | −0.0019 (15) |
C63 | 0.042 (2) | 0.029 (2) | 0.0227 (19) | −0.0019 (19) | 0.0104 (18) | −0.0005 (16) |
C64 | 0.051 (3) | 0.033 (2) | 0.0165 (18) | 0.008 (2) | 0.0038 (18) | −0.0013 (16) |
C65 | 0.032 (2) | 0.050 (3) | 0.026 (2) | 0.006 (2) | −0.0031 (17) | −0.0018 (19) |
C66 | 0.027 (2) | 0.044 (3) | 0.027 (2) | 0.0034 (19) | 0.0041 (17) | 0.0043 (18) |
C71 | 0.0231 (19) | 0.0240 (19) | 0.0263 (19) | −0.0009 (16) | 0.0074 (15) | −0.0044 (15) |
C72 | 0.035 (2) | 0.036 (2) | 0.035 (2) | 0.000 (2) | 0.0121 (19) | 0.0014 (19) |
C73 | 0.037 (3) | 0.065 (4) | 0.039 (3) | −0.002 (2) | 0.017 (2) | −0.009 (2) |
C74 | 0.035 (3) | 0.062 (4) | 0.052 (3) | 0.008 (2) | 0.014 (2) | −0.025 (3) |
C75 | 0.039 (3) | 0.034 (3) | 0.060 (3) | 0.014 (2) | 0.004 (2) | −0.014 (2) |
C76 | 0.033 (2) | 0.027 (2) | 0.037 (2) | 0.0004 (18) | 0.0050 (18) | −0.0038 (18) |
C81 | 0.029 (2) | 0.0206 (19) | 0.0178 (17) | −0.0019 (16) | 0.0034 (15) | −0.0007 (14) |
C82 | 0.030 (2) | 0.024 (2) | 0.0255 (19) | 0.0008 (16) | 0.0079 (16) | −0.0010 (15) |
C83 | 0.041 (2) | 0.024 (2) | 0.029 (2) | 0.0032 (18) | 0.0068 (18) | −0.0031 (16) |
C84 | 0.049 (3) | 0.022 (2) | 0.026 (2) | −0.0059 (19) | −0.0021 (19) | −0.0004 (16) |
C85 | 0.032 (2) | 0.034 (2) | 0.037 (2) | −0.0116 (19) | −0.0091 (18) | 0.0049 (19) |
C86 | 0.031 (2) | 0.026 (2) | 0.034 (2) | −0.0006 (18) | −0.0034 (18) | 0.0038 (17) |
Re1—O2 | 1.678 (3) | Re2—O4 | 1.675 (3) |
Re1—O1 | 2.027 (2) | Re2—O3 | 2.021 (2) |
Re1—N1 | 2.155 (3) | Re2—N3 | 2.152 (3) |
Re1—P1 | 2.4724 (10) | Re2—P2 | 2.4810 (10) |
Re1—Br1 | 2.4829 (4) | Re2—Br4 | 2.4970 (4) |
Re1—Br2 | 2.5252 (4) | Re2—Br3 | 2.5147 (5) |
P1—C21 | 1.816 (4) | P2—C71 | 1.814 (4) |
P1—C31 | 1.821 (4) | P2—C61 | 1.821 (4) |
P1—C41 | 1.821 (4) | P2—C81 | 1.830 (4) |
O1—C1 | 1.315 (4) | O3—C5 | 1.320 (4) |
N1—C2 | 1.303 (5) | N3—C6 | 1.301 (5) |
N1—N2 | 1.406 (4) | N3—N4 | 1.402 (4) |
N2—C1 | 1.294 (5) | N4—C5 | 1.295 (5) |
C1—C11 | 1.476 (5) | C5—C51 | 1.473 (5) |
C2—C4 | 1.489 (6) | C6—C7 | 1.491 (6) |
C2—C3 | 1.491 (6) | C6—C8 | 1.496 (6) |
C3—H311 | 0.9800 | C7—H711 | 0.9800 |
C3—H321 | 0.9800 | C7—H721 | 0.9800 |
C3—H331 | 0.9800 | C7—H731 | 0.9800 |
C4—H411 | 0.9800 | C8—H811 | 0.9800 |
C4—H421 | 0.9800 | C8—H821 | 0.9800 |
C4—H431 | 0.9800 | C8—H831 | 0.9800 |
C11—C12 | 1.391 (5) | C51—C56 | 1.392 (5) |
C11—C16 | 1.393 (5) | C51—C52 | 1.395 (5) |
C12—C13 | 1.385 (6) | C52—C53 | 1.377 (6) |
C12—H12 | 0.9500 | C52—H52 | 0.9500 |
C13—C14 | 1.378 (6) | C53—C54 | 1.384 (6) |
C13—H13 | 0.9500 | C53—H53 | 0.9500 |
C14—C15 | 1.381 (6) | C54—C55 | 1.387 (6) |
C14—H14 | 0.9500 | C54—H54 | 0.9500 |
C15—C16 | 1.382 (6) | C55—C56 | 1.380 (6) |
C15—H15 | 0.9500 | C55—H55 | 0.9500 |
C16—H16 | 0.9500 | C56—H56 | 0.9500 |
C21—C22 | 1.387 (6) | C61—C62 | 1.387 (5) |
C21—C26 | 1.393 (6) | C61—C66 | 1.391 (6) |
C22—C23 | 1.386 (6) | C62—C63 | 1.380 (5) |
C22—H22 | 0.9500 | C62—H62 | 0.9500 |
C23—C24 | 1.378 (7) | C63—C64 | 1.377 (6) |
C23—H23 | 0.9500 | C63—H63 | 0.9500 |
C24—C25 | 1.377 (7) | C64—C65 | 1.382 (6) |
C24—H24 | 0.9500 | C64—H64 | 0.9500 |
C25—C26 | 1.386 (6) | C65—C66 | 1.378 (6) |
C25—H25 | 0.9500 | C65—H65 | 0.9500 |
C26—H26 | 0.9500 | C66—H66 | 0.9500 |
C31—C36 | 1.393 (5) | C71—C76 | 1.388 (6) |
C31—C32 | 1.395 (6) | C71—C72 | 1.401 (5) |
C32—C33 | 1.388 (6) | C72—C73 | 1.376 (6) |
C32—H32 | 0.9500 | C72—H72 | 0.9500 |
C33—C34 | 1.376 (7) | C73—C74 | 1.383 (8) |
C33—H33 | 0.9500 | C73—H73 | 0.9500 |
C34—C35 | 1.383 (7) | C74—C75 | 1.373 (7) |
C34—H34 | 0.9500 | C74—H74 | 0.9500 |
C35—C36 | 1.378 (6) | C75—C76 | 1.382 (6) |
C35—H35 | 0.9500 | C75—H75 | 0.9500 |
C36—H36 | 0.9500 | C76—H76 | 0.9500 |
C41—C42 | 1.388 (6) | C81—C82 | 1.389 (5) |
C41—C46 | 1.392 (5) | C81—C86 | 1.391 (6) |
C42—C43 | 1.381 (6) | C82—C83 | 1.387 (6) |
C42—H42 | 0.9500 | C82—H82 | 0.9500 |
C43—C44 | 1.377 (6) | C83—C84 | 1.381 (6) |
C43—H43 | 0.9500 | C83—H83 | 0.9500 |
C44—C45 | 1.376 (6) | C84—C85 | 1.384 (6) |
C44—H44 | 0.9500 | C84—H84 | 0.9500 |
C45—C46 | 1.389 (6) | C85—C86 | 1.388 (6) |
C45—H45 | 0.9500 | C85—H85 | 0.9500 |
C46—H46 | 0.9500 | C86—H86 | 0.9500 |
O2—Re1—O1 | 161.65 (12) | O4—Re2—O3 | 162.46 (12) |
O2—Re1—N1 | 93.96 (12) | O4—Re2—N3 | 95.14 (12) |
O1—Re1—N1 | 73.84 (10) | O3—Re2—N3 | 73.71 (11) |
O2—Re1—P1 | 83.53 (10) | O4—Re2—P2 | 84.30 (10) |
O1—Re1—P1 | 83.83 (8) | O3—Re2—P2 | 82.50 (8) |
N1—Re1—P1 | 94.44 (9) | N3—Re2—P2 | 91.27 (9) |
O2—Re1—Br1 | 104.18 (9) | O4—Re2—Br4 | 102.84 (9) |
O1—Re1—Br1 | 89.52 (7) | O3—Re2—Br4 | 89.61 (7) |
N1—Re1—Br1 | 161.31 (8) | N3—Re2—Br4 | 161.64 (8) |
P1—Re1—Br1 | 92.08 (2) | P2—Re2—Br4 | 94.15 (2) |
O2—Re1—Br2 | 101.66 (9) | O4—Re2—Br3 | 101.18 (9) |
O1—Re1—Br2 | 90.71 (8) | O3—Re2—Br3 | 91.34 (8) |
N1—Re1—Br2 | 83.52 (9) | N3—Re2—Br3 | 84.42 (9) |
P1—Re1—Br2 | 174.53 (2) | P2—Re2—Br3 | 173.29 (3) |
Br1—Re1—Br2 | 88.359 (15) | Br4—Re2—Br3 | 88.444 (16) |
C21—P1—C31 | 107.05 (18) | C71—P2—C61 | 104.28 (18) |
C21—P1—C41 | 105.04 (17) | C71—P2—C81 | 105.30 (18) |
C31—P1—C41 | 104.00 (17) | C61—P2—C81 | 104.29 (17) |
C21—P1—Re1 | 117.33 (13) | C71—P2—Re2 | 109.17 (13) |
C31—P1—Re1 | 107.98 (13) | C61—P2—Re2 | 120.00 (13) |
C41—P1—Re1 | 114.44 (13) | C81—P2—Re2 | 112.58 (13) |
C1—O1—Re1 | 117.1 (2) | C5—O3—Re2 | 117.5 (2) |
C2—N1—N2 | 114.5 (3) | C6—N3—N4 | 114.3 (3) |
C2—N1—Re1 | 130.3 (3) | C6—N3—Re2 | 130.4 (3) |
N2—N1—Re1 | 115.1 (2) | N4—N3—Re2 | 115.3 (2) |
C1—N2—N1 | 110.6 (3) | C5—N4—N3 | 110.8 (3) |
N2—C1—O1 | 123.0 (3) | N4—C5—O3 | 122.3 (3) |
N2—C1—C11 | 118.9 (3) | N4—C5—C51 | 119.6 (3) |
O1—C1—C11 | 118.0 (3) | O3—C5—C51 | 118.2 (3) |
N1—C2—C4 | 122.4 (4) | N3—C6—C7 | 121.3 (4) |
N1—C2—C3 | 120.8 (4) | N3—C6—C8 | 121.3 (4) |
C4—C2—C3 | 116.8 (4) | C7—C6—C8 | 117.5 (4) |
C2—C3—H311 | 109.5 | C6—C7—H711 | 109.5 |
C2—C3—H321 | 109.5 | C6—C7—H721 | 109.5 |
H311—C3—H321 | 109.5 | H711—C7—H721 | 109.5 |
C2—C3—H331 | 109.5 | C6—C7—H731 | 109.5 |
H311—C3—H331 | 109.5 | H711—C7—H731 | 109.5 |
H321—C3—H331 | 109.5 | H721—C7—H731 | 109.5 |
C2—C4—H411 | 109.5 | C6—C8—H811 | 109.5 |
C2—C4—H421 | 109.5 | C6—C8—H821 | 109.5 |
H411—C4—H421 | 109.5 | H811—C8—H821 | 109.5 |
C2—C4—H431 | 109.5 | C6—C8—H831 | 109.5 |
H411—C4—H431 | 109.5 | H811—C8—H831 | 109.5 |
H421—C4—H431 | 109.5 | H821—C8—H831 | 109.5 |
C12—C11—C16 | 119.5 (4) | C56—C51—C52 | 119.2 (4) |
C12—C11—C1 | 120.4 (3) | C56—C51—C5 | 120.4 (3) |
C16—C11—C1 | 120.0 (3) | C52—C51—C5 | 120.3 (3) |
C13—C12—C11 | 119.9 (4) | C53—C52—C51 | 120.1 (4) |
C13—C12—H12 | 120.0 | C53—C52—H52 | 119.9 |
C11—C12—H12 | 120.0 | C51—C52—H52 | 119.9 |
C14—C13—C12 | 120.1 (4) | C52—C53—C54 | 120.4 (4) |
C14—C13—H13 | 120.0 | C52—C53—H53 | 119.8 |
C12—C13—H13 | 120.0 | C54—C53—H53 | 119.8 |
C13—C14—C15 | 120.4 (4) | C53—C54—C55 | 119.9 (4) |
C13—C14—H14 | 119.8 | C53—C54—H54 | 120.1 |
C15—C14—H14 | 119.8 | C55—C54—H54 | 120.1 |
C14—C15—C16 | 120.0 (4) | C56—C55—C54 | 119.9 (4) |
C14—C15—H15 | 120.0 | C56—C55—H55 | 120.0 |
C16—C15—H15 | 120.0 | C54—C55—H55 | 120.0 |
C15—C16—C11 | 120.1 (4) | C55—C56—C51 | 120.4 (4) |
C15—C16—H16 | 120.0 | C55—C56—H56 | 119.8 |
C11—C16—H16 | 120.0 | C51—C56—H56 | 119.8 |
C22—C21—C26 | 119.1 (4) | C62—C61—C66 | 119.2 (4) |
C22—C21—P1 | 122.2 (3) | C62—C61—P2 | 122.5 (3) |
C26—C21—P1 | 118.6 (3) | C66—C61—P2 | 118.3 (3) |
C23—C22—C21 | 120.3 (4) | C63—C62—C61 | 120.1 (4) |
C23—C22—H22 | 119.8 | C63—C62—H62 | 119.9 |
C21—C22—H22 | 119.8 | C61—C62—H62 | 119.9 |
C24—C23—C22 | 120.1 (5) | C64—C63—C62 | 120.4 (4) |
C24—C23—H23 | 120.0 | C64—C63—H63 | 119.8 |
C22—C23—H23 | 120.0 | C62—C63—H63 | 119.8 |
C25—C24—C23 | 120.1 (4) | C63—C64—C65 | 120.0 (4) |
C25—C24—H24 | 119.9 | C63—C64—H64 | 120.0 |
C23—C24—H24 | 119.9 | C65—C64—H64 | 120.0 |
C24—C25—C26 | 120.2 (4) | C66—C65—C64 | 120.0 (4) |
C24—C25—H25 | 119.9 | C66—C65—H65 | 120.0 |
C26—C25—H25 | 119.9 | C64—C65—H65 | 120.0 |
C25—C26—C21 | 120.1 (4) | C65—C66—C61 | 120.4 (4) |
C25—C26—H26 | 119.9 | C65—C66—H66 | 119.8 |
C21—C26—H26 | 119.9 | C61—C66—H66 | 119.8 |
C36—C31—C32 | 119.0 (4) | C76—C71—C72 | 118.8 (4) |
C36—C31—P1 | 120.2 (3) | C76—C71—P2 | 121.9 (3) |
C32—C31—P1 | 120.5 (3) | C72—C71—P2 | 118.8 (3) |
C33—C32—C31 | 120.3 (4) | C73—C72—C71 | 120.8 (4) |
C33—C32—H32 | 119.8 | C73—C72—H72 | 119.6 |
C31—C32—H32 | 119.8 | C71—C72—H72 | 119.6 |
C34—C33—C32 | 119.9 (4) | C72—C73—C74 | 119.4 (5) |
C34—C33—H33 | 120.1 | C72—C73—H73 | 120.3 |
C32—C33—H33 | 120.1 | C74—C73—H73 | 120.3 |
C33—C34—C35 | 120.2 (4) | C75—C74—C73 | 120.4 (4) |
C33—C34—H34 | 119.9 | C75—C74—H74 | 119.8 |
C35—C34—H34 | 119.9 | C73—C74—H74 | 119.8 |
C36—C35—C34 | 120.2 (4) | C74—C75—C76 | 120.5 (5) |
C36—C35—H35 | 119.9 | C74—C75—H75 | 119.7 |
C34—C35—H35 | 119.9 | C76—C75—H75 | 119.7 |
C35—C36—C31 | 120.4 (4) | C75—C76—C71 | 120.0 (4) |
C35—C36—H36 | 119.8 | C75—C76—H76 | 120.0 |
C31—C36—H36 | 119.8 | C71—C76—H76 | 120.0 |
C42—C41—C46 | 119.0 (4) | C82—C81—C86 | 119.1 (4) |
C42—C41—P1 | 118.5 (3) | C82—C81—P2 | 119.9 (3) |
C46—C41—P1 | 122.4 (3) | C86—C81—P2 | 120.9 (3) |
C43—C42—C41 | 120.6 (4) | C83—C82—C81 | 120.4 (4) |
C43—C42—H42 | 119.7 | C83—C82—H82 | 119.8 |
C41—C42—H42 | 119.7 | C81—C82—H82 | 119.8 |
C44—C43—C42 | 120.2 (4) | C84—C83—C82 | 120.2 (4) |
C44—C43—H43 | 119.9 | C84—C83—H83 | 119.9 |
C42—C43—H43 | 119.9 | C82—C83—H83 | 119.9 |
C45—C44—C43 | 119.9 (4) | C83—C84—C85 | 119.9 (4) |
C45—C44—H44 | 120.0 | C83—C84—H84 | 120.1 |
C43—C44—H44 | 120.0 | C85—C84—H84 | 120.1 |
C44—C45—C46 | 120.3 (4) | C84—C85—C86 | 120.1 (4) |
C44—C45—H45 | 119.8 | C84—C85—H85 | 120.0 |
C46—C45—H45 | 119.8 | C86—C85—H85 | 120.0 |
C45—C46—C41 | 119.9 (4) | C85—C86—C81 | 120.4 (4) |
C45—C46—H46 | 120.0 | C85—C86—H86 | 119.8 |
C41—C46—H46 | 120.0 | C81—C86—H86 | 119.8 |
O2—Re1—P1—C21 | −173.65 (17) | O4—Re2—P2—C71 | 85.74 (17) |
O1—Re1—P1—C21 | 19.68 (15) | O3—Re2—P2—C71 | −82.68 (15) |
N1—Re1—P1—C21 | 92.87 (16) | N3—Re2—P2—C71 | −9.29 (16) |
Br1—Re1—P1—C21 | −69.61 (14) | Br4—Re2—P2—C71 | −171.74 (14) |
O2—Re1—P1—C31 | 65.38 (16) | O4—Re2—P2—C61 | −154.11 (17) |
O1—Re1—P1—C31 | −101.29 (15) | O3—Re2—P2—C61 | 37.47 (16) |
N1—Re1—P1—C31 | −28.11 (15) | N3—Re2—P2—C61 | 110.86 (16) |
Br1—Re1—P1—C31 | 169.42 (13) | Br4—Re2—P2—C61 | −51.59 (14) |
O2—Re1—P1—C41 | −49.88 (16) | O4—Re2—P2—C81 | −30.82 (16) |
O1—Re1—P1—C41 | 143.44 (15) | O3—Re2—P2—C81 | 160.76 (14) |
N1—Re1—P1—C41 | −143.37 (16) | N3—Re2—P2—C81 | −125.85 (15) |
Br1—Re1—P1—C41 | 54.15 (13) | Br4—Re2—P2—C81 | 71.70 (13) |
O2—Re1—O1—C1 | 45.1 (5) | O4—Re2—O3—C5 | 46.6 (5) |
N1—Re1—O1—C1 | −4.7 (2) | N3—Re2—O3—C5 | −5.5 (3) |
P1—Re1—O1—C1 | 91.7 (2) | P2—Re2—O3—C5 | 88.1 (2) |
Br1—Re1—O1—C1 | −176.1 (2) | Br4—Re2—O3—C5 | −177.7 (2) |
Br2—Re1—O1—C1 | −87.8 (2) | Br3—Re2—O3—C5 | −89.3 (2) |
O2—Re1—N1—C2 | 22.8 (4) | O4—Re2—N3—C6 | 19.8 (4) |
O1—Re1—N1—C2 | −171.2 (4) | O3—Re2—N3—C6 | −174.0 (4) |
P1—Re1—N1—C2 | 106.6 (4) | P2—Re2—N3—C6 | 104.2 (4) |
Br1—Re1—N1—C2 | −143.4 (3) | Br4—Re2—N3—C6 | −148.5 (3) |
Br2—Re1—N1—C2 | −78.5 (4) | Br3—Re2—N3—C6 | −80.9 (4) |
O2—Re1—N1—N2 | −161.3 (3) | O4—Re2—N3—N4 | −160.7 (3) |
O1—Re1—N1—N2 | 4.7 (2) | O3—Re2—N3—N4 | 5.5 (2) |
P1—Re1—N1—N2 | −77.5 (2) | P2—Re2—N3—N4 | −76.3 (2) |
Br1—Re1—N1—N2 | 32.5 (4) | Br4—Re2—N3—N4 | 30.9 (5) |
Br2—Re1—N1—N2 | 97.3 (2) | Br3—Re2—N3—N4 | 98.5 (2) |
C2—N1—N2—C1 | 172.6 (3) | C6—N3—N4—C5 | 174.9 (4) |
Re1—N1—N2—C1 | −4.0 (4) | Re2—N3—N4—C5 | −4.7 (4) |
N1—N2—C1—O1 | −0.1 (5) | N3—N4—C5—O3 | 0.0 (5) |
N1—N2—C1—C11 | 177.7 (3) | N3—N4—C5—C51 | 179.4 (3) |
Re1—O1—C1—N2 | 4.5 (5) | Re2—O3—C5—N4 | 5.1 (5) |
Re1—O1—C1—C11 | −173.4 (2) | Re2—O3—C5—C51 | −174.3 (2) |
N2—N1—C2—C4 | −178.6 (4) | N4—N3—C6—C7 | 4.8 (6) |
Re1—N1—C2—C4 | −2.6 (6) | Re2—N3—C6—C7 | −175.8 (3) |
N2—N1—C2—C3 | 1.7 (6) | N4—N3—C6—C8 | −176.4 (4) |
Re1—N1—C2—C3 | 177.6 (3) | Re2—N3—C6—C8 | 3.0 (7) |
N2—C1—C11—C12 | 14.6 (5) | N4—C5—C51—C56 | −173.1 (4) |
O1—C1—C11—C12 | −167.5 (3) | O3—C5—C51—C56 | 6.3 (5) |
N2—C1—C11—C16 | −163.4 (4) | N4—C5—C51—C52 | 6.3 (6) |
O1—C1—C11—C16 | 14.6 (5) | O3—C5—C51—C52 | −174.3 (3) |
C16—C11—C12—C13 | 0.4 (6) | C56—C51—C52—C53 | −0.1 (6) |
C1—C11—C12—C13 | −177.6 (4) | C5—C51—C52—C53 | −179.5 (4) |
C11—C12—C13—C14 | −0.4 (6) | C51—C52—C53—C54 | 0.8 (6) |
C12—C13—C14—C15 | 0.3 (7) | C52—C53—C54—C55 | −0.8 (7) |
C13—C14—C15—C16 | −0.2 (7) | C53—C54—C55—C56 | 0.2 (7) |
C14—C15—C16—C11 | 0.2 (7) | C54—C55—C56—C51 | 0.5 (7) |
C12—C11—C16—C15 | −0.3 (6) | C52—C51—C56—C55 | −0.5 (6) |
C1—C11—C16—C15 | 177.7 (4) | C5—C51—C56—C55 | 178.9 (4) |
C31—P1—C21—C22 | −13.9 (4) | C71—P2—C61—C62 | 133.1 (3) |
C41—P1—C21—C22 | 96.2 (4) | C81—P2—C61—C62 | −116.6 (3) |
Re1—P1—C21—C22 | −135.4 (3) | Re2—P2—C61—C62 | 10.6 (4) |
C31—P1—C21—C26 | 168.8 (3) | C71—P2—C61—C66 | −48.2 (4) |
C41—P1—C21—C26 | −81.1 (3) | C81—P2—C61—C66 | 62.0 (4) |
Re1—P1—C21—C26 | 47.3 (3) | Re2—P2—C61—C66 | −170.8 (3) |
C26—C21—C22—C23 | −1.5 (7) | C66—C61—C62—C63 | 0.6 (6) |
P1—C21—C22—C23 | −178.7 (4) | P2—C61—C62—C63 | 179.2 (3) |
C21—C22—C23—C24 | 0.4 (8) | C61—C62—C63—C64 | 0.0 (6) |
C22—C23—C24—C25 | 0.9 (8) | C62—C63—C64—C65 | −0.7 (6) |
C23—C24—C25—C26 | −1.2 (7) | C63—C64—C65—C66 | 0.7 (7) |
C24—C25—C26—C21 | 0.1 (7) | C64—C65—C66—C61 | 0.0 (7) |
C22—C21—C26—C25 | 1.2 (6) | C62—C61—C66—C65 | −0.6 (6) |
P1—C21—C26—C25 | 178.5 (3) | P2—C61—C66—C65 | −179.3 (3) |
C21—P1—C31—C36 | −52.4 (4) | C61—P2—C71—C76 | −31.9 (4) |
C41—P1—C31—C36 | −163.3 (3) | C81—P2—C71—C76 | −141.4 (3) |
Re1—P1—C31—C36 | 74.7 (3) | Re2—P2—C71—C76 | 97.5 (3) |
C21—P1—C31—C32 | 134.6 (3) | C61—P2—C71—C72 | 156.3 (3) |
C41—P1—C31—C32 | 23.7 (4) | C81—P2—C71—C72 | 46.8 (4) |
Re1—P1—C31—C32 | −98.3 (3) | Re2—P2—C71—C72 | −74.3 (3) |
C36—C31—C32—C33 | 0.0 (6) | C76—C71—C72—C73 | 1.7 (7) |
P1—C31—C32—C33 | 173.1 (4) | P2—C71—C72—C73 | 173.7 (4) |
C31—C32—C33—C34 | 0.8 (7) | C71—C72—C73—C74 | −1.1 (7) |
C32—C33—C34—C35 | −0.9 (8) | C72—C73—C74—C75 | 0.0 (8) |
C33—C34—C35—C36 | 0.0 (7) | C73—C74—C75—C76 | 0.6 (8) |
C34—C35—C36—C31 | 0.8 (7) | C74—C75—C76—C71 | 0.0 (7) |
C32—C31—C36—C35 | −0.8 (6) | C72—C71—C76—C75 | −1.1 (6) |
P1—C31—C36—C35 | −173.9 (3) | P2—C71—C76—C75 | −172.9 (4) |
C21—P1—C41—C42 | −45.5 (4) | C71—P2—C81—C82 | −149.4 (3) |
C31—P1—C41—C42 | 66.8 (4) | C61—P2—C81—C82 | 101.1 (3) |
Re1—P1—C41—C42 | −175.6 (3) | Re2—P2—C81—C82 | −30.6 (3) |
C21—P1—C41—C46 | 138.9 (3) | C71—P2—C81—C86 | 33.0 (4) |
C31—P1—C41—C46 | −108.8 (3) | C61—P2—C81—C86 | −76.5 (3) |
Re1—P1—C41—C46 | 8.8 (4) | Re2—P2—C81—C86 | 151.8 (3) |
C46—C41—C42—C43 | 0.4 (7) | C86—C81—C82—C83 | 0.4 (6) |
P1—C41—C42—C43 | −175.3 (4) | P2—C81—C82—C83 | −177.2 (3) |
C41—C42—C43—C44 | 0.2 (8) | C81—C82—C83—C84 | −0.3 (6) |
C42—C43—C44—C45 | −0.7 (8) | C82—C83—C84—C85 | 0.2 (6) |
C43—C44—C45—C46 | 0.8 (7) | C83—C84—C85—C86 | −0.2 (6) |
C44—C45—C46—C41 | −0.2 (7) | C84—C85—C86—C81 | 0.3 (6) |
C42—C41—C46—C45 | −0.4 (6) | C82—C81—C86—C85 | −0.4 (6) |
P1—C41—C46—C45 | 175.2 (3) | P2—C81—C86—C85 | 177.2 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
C22—H22···Br3 | 0.95 | 2.94 | 3.819 (5) | 154 |
C85—H85···Br2i | 0.95 | 2.92 | 3.587 (4) | 128 |
Symmetry code: (i) x−1, −y+1/2, z−1/2. |
Experimental details
Crystal data | |
Chemical formula | [ReBr2(C10H11N2O)O(C18H15P)] |
Mr | 799.50 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 200 |
a, b, c (Å) | 19.1130 (5), 18.3910 (4), 15.8140 (4) |
β (°) | 97.410 (1) |
V (Å3) | 5512.3 (2) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 7.40 |
Crystal size (mm) | 0.39 × 0.35 × 0.16 |
Data collection | |
Diffractometer | Bruker APEXII CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2008) |
Tmin, Tmax | 0.589, 1.000 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 50272, 13695, 11062 |
Rint | 0.031 |
(sin θ/λ)max (Å−1) | 0.668 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.028, 0.066, 1.11 |
No. of reflections | 13695 |
No. of parameters | 649 |
H-atom treatment | H-atom parameters constrained |
w = 1/[σ2(Fo2) + (0.0171P)2 + 13.1603P] where P = (Fo2 + 2Fc2)/3 | |
Δρmax, Δρmin (e Å−3) | 1.11, −1.33 |
Computer programs: APEX2 (Bruker, 2010), SAINT (Bruker, 2010), SIR97 (Altomare et al., 1999), ORTEPIII (Farrugia, 1997) and Mercury (Macrae et al., 2008), SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
C22—H22···Br3 | 0.95 | 2.94 | 3.819 (5) | 153.6 |
C85—H85···Br2i | 0.95 | 2.92 | 3.587 (4) | 127.8 |
Symmetry code: (i) x−1, −y+1/2, z−1/2. |
Acknowledgements
The authors thank Mrs Rose van der Vyver for helpful discussions and a lifetime of joy.
References
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
Next to cardiovascular diseases, cancer has become one of the main fatal diseases in industrialized countries. Apart from classical surgery, chemo- and radiotherapeutic treatments have entered the arsenal of possible cures for certain types of cancer. All methods, however, suffer from their own set of problematic side-effects and, as a consequence, the development of radiopharmaceuticals – combining the advantages of chemotherapy as well as radiation methods while at the same time avoiding their unique respective undesired side-effects – has been a topic of research (Gerber et al., 2011). Tailoring and fine-tuning of the envisioned radiopharmaceuticals' properties such as lipophilicity and, in particular, inertness is of paramount importance with respect to possible future in vivo applications in contemporary medicine and requires sound knowledge about structural parameters of the ligands applied if a more heuristic approach in the synthesis is to triumph over pure trial-and-error as it is encountered in this specific field of coordination chemistry up to the present day. In continuation of our interest in rhenium-based coordination compounds that might serve as radiopharmaceuticals, we determined the molecular and crystal structure of the title compound. Information about the crystal structures of rhenium coordination compounds with the central atom in different oxidation states is apparent in the literature (Potgieter et al., 2010).
The central atom in both molecules of the asymmetric unit is hexacoordinate. The ligand sphere features one chelate ligand which is present in its tautomeric imine form. Both oxygen atoms are in trans-position, the bromido ligands are cis-orientated. While the small puckering amplitude of one of the five-membered chelate rings (τ = 4.3 °) precludes a conformational analysis (Cremer & Pople, 1975) in the first molecule of the asymmetric unite, the corresponding five-membered ring in the second molecule adopts an envelope conformation on the rhenium atom (Re2E, Q2 = 0.076 (3) Å, π2 = 358 (3) °). The central atom is displaced by 0.184 (1) Å and 0.188 (1) Å, respectively, from the plane defined by the bromido ligands as well as the coordinating nitrogen atom and phosphorus atom (Fig. 1).
In the crystal, C–H···Br contacts can be observed whose range falls by more than 0.1 Å below the sum of van-der-Waals radii of the respective atoms. These are supported exclusively by hydrogen atoms of phenyl groups on the triphenylphosphane ligand and involve hydrogen atoms in ortho as well as in meta position as donors and the bromido ligand in trans-position to the coordinating phosphorus atom as acceptors. In terms of graph-set analysis (Etter et al., 1990; Bernstein et al., 1995), the descriptor for these contacts is DD on the unitary level. In total, the molecules are connected to chains along [1 0 1] (Fig. 2). The shortest intercentroid distance between two centers of gravity was found at 3.906 (2) Å.