Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536805029041/bv6028sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S1600536805029041/bv6028Isup2.hkl |
CCDC reference: 287488
Complex (I) was obtained by the ligand-exchange reaction of (Et4N)3[W2(OMe)3(CO)6] with 1 equivalent of 1,3-propanediol. In a typical experiment, (Et4N)3[W2(OMe)3(CO)6] (0.100 g) was dissolved in CH3CN (20 ml) and 1,3-propanediol (1 equivalent) in CH3CN (15 ml) was added. This solution was allowed to stir for 1 h at room temperature. The solvent was then removed at reduced pressure to a final volume of about 5 ml and the complex was precipitated from solution by addition of ether (60 ml), resulting in an oily precipitate. Diffraction quality crystals of (I) were obtained by slow diffusion of ether into a concentrated acetonitrile solution.
One and a half tetraethylammonium cations are present to balance the charge in the asymmetric unit. The half molecule is situated with N2 on a mirror plane and is disordered. Occupancies of the C atoms of the disordered cation were constrained to sum to unity, and one half of the molecule was modeled while the other is symmetry generated. Refinement yielded an 0.51 (1)/0.49 (1) disorder of the C atoms. H atoms were included in calculated positions (C—H = 0.93 Å); isotropic displacement parameters were fixed [Uiso(H) = 1.2Ueq(C)]. The largest electron-density peak is 0.71 Å from atom W1.
Data collection: APEX2 (Bruker, 2003); cell refinement: APEX2; data reduction: SAINT-Plus (Bruker, 2003); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL (Sheldrick, 2000); software used to prepare material for publication: SHELXTL.
Fig. 1. A view of the molecular structure of (I). Displacement ellipsoids are drawn at the 50% probability level |
(C8H20N)3[W2(CH3O)2(C3H7O2)(CO)6] | F(000) = 2120 |
Mr = 1063.63 | Dx = 1.686 Mg m−3 |
Orthorhombic, Pnma | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ac 2n | Cell parameters from 6700 reflections |
a = 16.9476 (6) Å | θ = 2.5–34.5° |
b = 24.1286 (9) Å | µ = 5.54 mm−1 |
c = 10.2457 (4) Å | T = 110 K |
V = 4189.7 (3) Å3 | Block, orange |
Z = 4 | 0.26 × 0.15 × 0.13 mm |
Bruker SMART CCD area-detector diffractometer | 5181 independent reflections |
Radiation source: fine-focus sealed tube | 4411 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.024 |
ϕ and ω scans | θmax = 28.3°, θmin = 2.2° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −22→22 |
Tmin = 0.297, Tmax = 0.485 | k = −32→23 |
27335 measured reflections | l = −13→11 |
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)] = 0.022 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.060 | H-atom parameters constrained |
S = 1.02 | w = 1/[σ2(Fo2) + (0.0293P)2 + 7.8991P] where P = (Fo2 + 2Fc2)/3 |
5181 reflections | (Δ/σ)max = 0.004 |
274 parameters | Δρmax = 2.55 e Å−3 |
5 restraints | Δρmin = −0.77 e Å−3 |
(C8H20N)3[W2(CH3O)2(C3H7O2)(CO)6] | V = 4189.7 (3) Å3 |
Mr = 1063.63 | Z = 4 |
Orthorhombic, Pnma | Mo Kα radiation |
a = 16.9476 (6) Å | µ = 5.54 mm−1 |
b = 24.1286 (9) Å | T = 110 K |
c = 10.2457 (4) Å | 0.26 × 0.15 × 0.13 mm |
Bruker SMART CCD area-detector diffractometer | 5181 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 4411 reflections with I > 2σ(I) |
Tmin = 0.297, Tmax = 0.485 | Rint = 0.024 |
27335 measured reflections |
R[F2 > 2σ(F2)] = 0.022 | 5 restraints |
wR(F2) = 0.060 | H-atom parameters constrained |
S = 1.02 | Δρmax = 2.55 e Å−3 |
5181 reflections | Δρmin = −0.77 e Å−3 |
274 parameters |
Experimental. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > 2sigma(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R– factors based on ALL data will be even larger. |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes. |
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
W1 | 0.120112 (6) | 0.682331 (4) | 1.400128 (11) | 0.02087 (5) | |
O1 | 0.15179 (18) | 0.59719 (10) | 1.1764 (2) | 0.0476 (6) | |
O2 | −0.00686 (13) | 0.59786 (9) | 1.4974 (2) | 0.0351 (5) | |
O3 | 0.24150 (14) | 0.61157 (10) | 1.5583 (2) | 0.0353 (5) | |
O4 | 0.10259 (17) | 0.7500 | 1.5404 (3) | 0.0220 (6) | |
O5 | 0.19831 (17) | 0.7500 | 1.3367 (3) | 0.0241 (6) | |
N1 | 0.12964 (15) | 0.50237 (11) | 0.8078 (3) | 0.0286 (5) | |
C1 | 0.13868 (19) | 0.63054 (13) | 1.2595 (3) | 0.0312 (7) | |
C2 | 0.04105 (18) | 0.63060 (12) | 1.4595 (3) | 0.0257 (6) | |
C3 | 0.19455 (17) | 0.63833 (12) | 1.4972 (3) | 0.0261 (6) | |
C4 | 0.1402 (3) | 0.7500 | 1.6612 (4) | 0.0326 (10) | |
H4A | 0.1254 | 0.7826 | 1.7090 | 0.049* | 0.50 |
H4B | 0.1963 | 0.7500 | 1.6485 | 0.049* | |
C5 | 0.2808 (3) | 0.7500 | 1.3546 (5) | 0.0305 (9) | |
H5A | 0.3030 | 0.7835 | 1.3196 | 0.046* | 0.50 |
H5B | 0.2918 | 0.7500 | 1.4464 | 0.046* | |
O6 | 0.05275 (17) | 0.7500 | 1.3127 (3) | 0.0241 (6) | |
C6 | −0.01112 (16) | 0.7500 | 1.2256 (3) | 0.0380 (11) | |
H6A | −0.0300 | 0.7884 | 1.2127 | 0.046* | 0.50 |
H6B | −0.0550 | 0.7280 | 1.2627 | 0.046* | 0.50 |
C7 | 0.01377 (16) | 0.7250 (2) | 1.0922 (3) | 0.0393 (16) | 0.50 |
H7A | 0.0259 | 0.6853 | 1.1055 | 0.047* | 0.50 |
H7B | −0.0320 | 0.7271 | 1.0324 | 0.047* | 0.50 |
C8 | 0.07930 (16) | 0.7500 | 1.0294 (3) | 0.087 (3) | |
H8A | 0.0794 | 0.7346 | 0.9398 | 0.104* | 0.50 |
H8B | 0.0650 | 0.7896 | 1.0201 | 0.104* | 0.50 |
O7 | 0.15790 (16) | 0.7500 | 1.0679 (3) | 0.0588 (12) | |
H7 | 0.1605 | 0.7526 | 1.1496 | 0.088* | 0.50 |
C9 | 0.21424 (19) | 0.50277 (14) | 0.7599 (4) | 0.0361 (7) | |
H9A | 0.2238 | 0.4682 | 0.7103 | 0.043* | |
H9B | 0.2207 | 0.5341 | 0.6986 | 0.043* | |
C10 | 0.2768 (2) | 0.50757 (17) | 0.8650 (4) | 0.0484 (9) | |
H10A | 0.3292 | 0.5071 | 0.8246 | 0.073* | |
H10B | 0.2720 | 0.4763 | 0.9256 | 0.073* | |
H10C | 0.2696 | 0.5424 | 0.9128 | 0.073* | |
C11 | 0.07718 (19) | 0.50265 (14) | 0.6875 (3) | 0.0336 (7) | |
H11A | 0.0895 | 0.5362 | 0.6357 | 0.040* | |
H11B | 0.0908 | 0.4700 | 0.6334 | 0.040* | |
C12 | −0.0102 (2) | 0.50168 (17) | 0.7132 (4) | 0.0445 (9) | |
H12A | −0.0388 | 0.5021 | 0.6301 | 0.067* | |
H12B | −0.0250 | 0.5343 | 0.7647 | 0.067* | |
H12C | −0.0239 | 0.4680 | 0.7617 | 0.067* | |
C13 | 0.1131 (2) | 0.55184 (16) | 0.8947 (3) | 0.0381 (8) | |
H13A | 0.1478 | 0.5497 | 0.9722 | 0.046* | |
H13B | 0.0578 | 0.5496 | 0.9256 | 0.046* | |
C14 | 0.1253 (2) | 0.60758 (16) | 0.8293 (4) | 0.0464 (9) | |
H14A | 0.1125 | 0.6373 | 0.8910 | 0.070* | |
H14B | 0.0908 | 0.6104 | 0.7528 | 0.070* | |
H14C | 0.1805 | 0.6111 | 0.8018 | 0.070* | |
C15 | 0.1139 (2) | 0.45127 (15) | 0.8923 (3) | 0.0344 (7) | |
H15A | 0.1508 | 0.4517 | 0.9671 | 0.041* | |
H15B | 0.0597 | 0.4538 | 0.9278 | 0.041* | |
C16 | 0.1224 (2) | 0.39619 (15) | 0.8209 (4) | 0.0463 (9) | |
H16A | 0.1097 | 0.3657 | 0.8806 | 0.069* | |
H16B | 0.1768 | 0.3921 | 0.7898 | 0.069* | |
H16C | 0.0862 | 0.3953 | 0.7463 | 0.069* | |
N2 | −0.1305 (2) | 0.7500 | 1.6477 (5) | 0.0439 (11) | 0.486 (6) |
C17 | −0.0956 (6) | 0.7279 (4) | 1.5275 (8) | 0.060 (3) | 0.486 (6) |
H17A | −0.0456 | 0.7085 | 1.5474 | 0.072* | 0.486 (6) |
H17B | −0.0841 | 0.7585 | 1.4659 | 0.072* | 0.486 (6) |
C18 | −0.1546 (7) | 0.6877 (5) | 1.4670 (10) | 0.067 (3) | 0.486 (6) |
H18A | −0.1330 | 0.6730 | 1.3853 | 0.100* | 0.486 (6) |
H18B | −0.2041 | 0.7071 | 1.4490 | 0.100* | 0.486 (6) |
H18C | −0.1644 | 0.6571 | 1.5277 | 0.100* | 0.486 (6) |
C19 | −0.1544 (4) | 0.7116 (3) | 1.7505 (7) | 0.0343 (17) | 0.486 (6) |
H19A | −0.2031 | 0.6920 | 1.7234 | 0.041* | 0.486 (6) |
H19B | −0.1662 | 0.7326 | 1.8311 | 0.041* | 0.486 (6) |
C20 | −0.0895 (19) | 0.6690 (14) | 1.778 (2) | 0.061 (6) | 0.486 (6) |
H20A | −0.1073 | 0.6436 | 1.8470 | 0.091* | 0.486 (6) |
H20B | −0.0417 | 0.6883 | 1.8076 | 0.091* | 0.486 (6) |
H20C | −0.0779 | 0.6480 | 1.6989 | 0.091* | 0.486 (6) |
N2A | −0.1305 (2) | 0.7500 | 1.6477 (5) | 0.0439 (11) | 0.514 (6) |
C17A | −0.2027 (4) | 0.7111 (3) | 1.6167 (6) | 0.0342 (16) | 0.514 (6) |
H17C | −0.2165 | 0.6912 | 1.6981 | 0.041* | 0.514 (6) |
H17D | −0.2481 | 0.7350 | 1.5944 | 0.041* | 0.514 (6) |
C18A | −0.1946 (6) | 0.6680 (3) | 1.5089 (8) | 0.051 (2) | 0.514 (6) |
H18D | −0.2443 | 0.6475 | 1.5002 | 0.076* | 0.514 (6) |
H18E | −0.1520 | 0.6422 | 1.5309 | 0.076* | 0.514 (6) |
H18F | −0.1824 | 0.6866 | 1.4263 | 0.076* | 0.514 (6) |
C19A | −0.0633 (4) | 0.7073 (3) | 1.7043 (8) | 0.049 (2) | 0.514 (6) |
H19C | −0.0474 | 0.6821 | 1.6327 | 0.058* | 0.514 (6) |
H19D | −0.0163 | 0.7292 | 1.7289 | 0.058* | 0.514 (6) |
C20A | −0.0868 (17) | 0.6725 (12) | 1.820 (2) | 0.063 (6) | 0.514 (6) |
H20D | −0.0424 | 0.6489 | 1.8454 | 0.094* | 0.514 (6) |
H20E | −0.1320 | 0.6493 | 1.7960 | 0.094* | 0.514 (6) |
H20F | −0.1013 | 0.6968 | 1.8925 | 0.094* | 0.514 (6) |
U11 | U22 | U33 | U12 | U13 | U23 | |
W1 | 0.02378 (8) | 0.01818 (7) | 0.02066 (7) | 0.00076 (4) | −0.00007 (4) | −0.00002 (4) |
O1 | 0.0757 (19) | 0.0329 (13) | 0.0342 (13) | −0.0012 (13) | 0.0128 (13) | −0.0093 (11) |
O2 | 0.0331 (12) | 0.0272 (12) | 0.0451 (13) | −0.0044 (9) | 0.0033 (10) | 0.0035 (10) |
O3 | 0.0351 (13) | 0.0338 (12) | 0.0368 (12) | 0.0103 (10) | 0.0031 (10) | 0.0077 (10) |
O4 | 0.0266 (15) | 0.0201 (13) | 0.0193 (13) | 0.000 | −0.0012 (11) | 0.000 |
O5 | 0.0248 (15) | 0.0227 (14) | 0.0247 (14) | 0.000 | 0.0001 (12) | 0.000 |
N1 | 0.0286 (14) | 0.0297 (14) | 0.0276 (12) | 0.0014 (10) | 0.0033 (10) | 0.0057 (11) |
C1 | 0.0401 (18) | 0.0261 (15) | 0.0274 (14) | −0.0023 (13) | 0.0068 (13) | 0.0015 (12) |
C2 | 0.0274 (15) | 0.0230 (14) | 0.0266 (14) | 0.0049 (11) | −0.0026 (12) | 0.0005 (11) |
C3 | 0.0268 (15) | 0.0243 (14) | 0.0273 (13) | 0.0027 (11) | 0.0072 (12) | 0.0009 (12) |
C4 | 0.036 (2) | 0.040 (3) | 0.022 (2) | 0.000 | −0.0041 (18) | 0.000 |
C5 | 0.022 (2) | 0.035 (2) | 0.035 (2) | 0.000 | 0.0028 (18) | 0.000 |
O6 | 0.0250 (15) | 0.0237 (14) | 0.0236 (14) | 0.000 | −0.0048 (12) | 0.000 |
C6 | 0.031 (2) | 0.048 (3) | 0.035 (2) | 0.000 | −0.009 (2) | 0.000 |
C7 | 0.048 (4) | 0.042 (4) | 0.028 (3) | −0.004 (3) | −0.004 (3) | 0.001 (3) |
C8 | 0.060 (5) | 0.170 (9) | 0.031 (3) | 0.000 | 0.001 (3) | 0.000 |
O7 | 0.050 (3) | 0.092 (3) | 0.0341 (19) | 0.000 | 0.0103 (18) | 0.000 |
C9 | 0.0311 (17) | 0.0326 (17) | 0.0447 (19) | 0.0017 (13) | 0.0043 (15) | 0.0073 (15) |
C10 | 0.035 (2) | 0.043 (2) | 0.067 (3) | −0.0010 (16) | −0.0100 (18) | 0.0077 (19) |
C11 | 0.0333 (18) | 0.0348 (17) | 0.0326 (16) | 0.0044 (13) | −0.0026 (13) | 0.0038 (14) |
C12 | 0.0315 (18) | 0.047 (2) | 0.055 (2) | 0.0012 (15) | −0.0003 (17) | 0.0057 (19) |
C13 | 0.046 (2) | 0.0340 (18) | 0.0343 (18) | 0.0044 (14) | 0.0075 (15) | −0.0007 (14) |
C14 | 0.061 (3) | 0.0295 (18) | 0.049 (2) | 0.0082 (16) | 0.0085 (18) | 0.0017 (16) |
C15 | 0.0347 (18) | 0.0316 (17) | 0.0368 (18) | −0.0026 (13) | 0.0019 (13) | 0.0124 (14) |
C16 | 0.054 (2) | 0.0292 (18) | 0.055 (2) | −0.0041 (15) | −0.0103 (18) | 0.0094 (17) |
N2 | 0.030 (2) | 0.059 (3) | 0.043 (2) | 0.000 | 0.0118 (19) | 0.000 |
C17 | 0.073 (6) | 0.071 (6) | 0.037 (4) | 0.034 (5) | 0.016 (4) | −0.002 (4) |
C18 | 0.067 (7) | 0.092 (9) | 0.042 (5) | 0.037 (6) | −0.012 (5) | −0.014 (5) |
C19 | 0.030 (4) | 0.042 (4) | 0.030 (3) | 0.002 (3) | 0.003 (3) | 0.004 (3) |
C20 | 0.062 (9) | 0.066 (9) | 0.054 (11) | 0.028 (7) | −0.012 (8) | 0.012 (8) |
N2A | 0.030 (2) | 0.059 (3) | 0.043 (2) | 0.000 | 0.0118 (19) | 0.000 |
C17A | 0.030 (4) | 0.038 (4) | 0.034 (3) | −0.009 (3) | 0.004 (3) | −0.001 (3) |
C18A | 0.061 (6) | 0.041 (4) | 0.050 (5) | −0.014 (4) | 0.026 (4) | −0.016 (4) |
C19A | 0.035 (4) | 0.055 (5) | 0.056 (5) | −0.004 (3) | 0.004 (4) | −0.015 (4) |
C20A | 0.051 (8) | 0.058 (8) | 0.080 (16) | 0.008 (6) | 0.003 (10) | 0.021 (10) |
W1—C3 | 1.926 (3) | C12—H12B | 0.9800 |
W1—C2 | 1.930 (3) | C12—H12C | 0.9800 |
W1—C1 | 1.933 (3) | C13—C14 | 1.517 (5) |
W1—O6 | 2.1844 (18) | C13—H13A | 0.9900 |
W1—O4 | 2.1952 (19) | C13—H13B | 0.9900 |
W1—O5 | 2.2010 (19) | C14—H14A | 0.9800 |
O1—C1 | 1.193 (4) | C14—H14B | 0.9800 |
O2—C2 | 1.198 (4) | C14—H14C | 0.9800 |
O3—C3 | 1.201 (4) | C15—C16 | 1.524 (5) |
O4—C4 | 1.392 (5) | C15—H15A | 0.9900 |
O4—W1i | 2.1952 (19) | C15—H15B | 0.9900 |
O5—C5 | 1.411 (5) | C16—H16A | 0.9800 |
O5—W1i | 2.2010 (19) | C16—H16B | 0.9800 |
N1—C13 | 1.515 (4) | C16—H16C | 0.9800 |
N1—C9 | 1.516 (4) | N2—C19i | 1.460 (7) |
N1—C11 | 1.520 (4) | N2—C19 | 1.460 (7) |
N1—C15 | 1.530 (4) | N2—C17 | 1.467 (8) |
C4—H4A | 0.9599 | N2—C17i | 1.467 (8) |
C4—H4B | 0.9600 | C17—C18 | 1.525 (12) |
C5—H5A | 0.9600 | C17—H17A | 0.9900 |
C5—H5B | 0.9587 | C17—H17B | 0.9900 |
O6—C6 | 1.403 (4) | C18—H18A | 0.9800 |
O6—W1i | 2.1844 (18) | C18—H18B | 0.9800 |
C6—C7 | 1.5522 | C18—H18C | 0.9800 |
C6—H6A | 0.9900 | C19—C20 | 1.53 (3) |
C6—H6B | 0.9900 | C19—H19A | 0.9900 |
C7—C8 | 1.4181 | C19—H19B | 0.9900 |
C7—H7A | 0.9900 | C20—H20A | 0.9800 |
C7—H7B | 0.9900 | C20—H20B | 0.9800 |
C8—O7 | 1.389 (4) | C20—H20C | 0.9800 |
C8—H8A | 0.9900 | C17A—C18A | 1.522 (9) |
C8—H8B | 0.9900 | C17A—H17C | 0.9900 |
O7—H7 | 0.8400 | C17A—H17D | 0.9900 |
C9—C10 | 1.515 (5) | C18A—H18D | 0.9800 |
C9—H9A | 0.9900 | C18A—H18E | 0.9800 |
C9—H9B | 0.9900 | C18A—H18F | 0.9800 |
C10—H10A | 0.9800 | C19A—C20A | 1.50 (3) |
C10—H10B | 0.9800 | C19A—H19C | 0.9900 |
C10—H10C | 0.9800 | C19A—H19D | 0.9900 |
C11—C12 | 1.505 (5) | C20A—H20D | 0.9800 |
C11—H11A | 0.9900 | C20A—H20E | 0.9800 |
C11—H11B | 0.9900 | C20A—H20F | 0.9800 |
C12—H12A | 0.9800 | ||
C3—W1—C2 | 86.30 (12) | C11—C12—H12B | 109.5 |
C3—W1—C1 | 85.52 (13) | H12A—C12—H12B | 109.5 |
C2—W1—C1 | 85.97 (13) | C11—C12—H12C | 109.5 |
C3—W1—O6 | 165.09 (11) | H12A—C12—H12C | 109.5 |
C2—W1—O6 | 104.47 (11) | H12B—C12—H12C | 109.5 |
C1—W1—O6 | 105.23 (12) | N1—C13—C14 | 114.4 (3) |
C3—W1—O4 | 99.24 (11) | N1—C13—H13A | 108.7 |
C2—W1—O4 | 100.42 (11) | C14—C13—H13A | 108.7 |
C1—W1—O4 | 172.22 (11) | N1—C13—H13B | 108.7 |
O6—W1—O4 | 69.01 (9) | C14—C13—H13B | 108.7 |
C3—W1—O5 | 99.61 (11) | H13A—C13—H13B | 107.6 |
C2—W1—O5 | 172.32 (10) | C13—C14—H14A | 109.5 |
C1—W1—O5 | 99.30 (11) | C13—C14—H14B | 109.5 |
O6—W1—O5 | 68.84 (10) | H14A—C14—H14B | 109.5 |
O4—W1—O5 | 73.92 (9) | C13—C14—H14C | 109.5 |
C4—O4—W1i | 121.34 (15) | H14A—C14—H14C | 109.5 |
C4—O4—W1 | 121.34 (15) | H14B—C14—H14C | 109.5 |
W1i—O4—W1 | 96.11 (11) | C16—C15—N1 | 114.5 (3) |
C5—O5—W1 | 123.97 (13) | C16—C15—H15A | 108.6 |
C5—O5—W1i | 123.97 (13) | N1—C15—H15A | 108.6 |
W1—O5—W1i | 95.77 (11) | C16—C15—H15B | 108.6 |
C13—N1—C9 | 111.1 (3) | N1—C15—H15B | 108.6 |
C13—N1—C11 | 111.4 (2) | H15A—C15—H15B | 107.6 |
C9—N1—C11 | 106.9 (2) | C15—C16—H16A | 109.5 |
C13—N1—C15 | 105.7 (3) | C15—C16—H16B | 109.5 |
C9—N1—C15 | 110.7 (2) | H16A—C16—H16B | 109.5 |
C11—N1—C15 | 111.1 (2) | C15—C16—H16C | 109.5 |
O1—C1—W1 | 177.3 (3) | H16A—C16—H16C | 109.5 |
O2—C2—W1 | 178.7 (3) | H16B—C16—H16C | 109.5 |
O3—C3—W1 | 179.1 (3) | C19i—N2—C19 | 78.9 (6) |
O4—C4—H4A | 109.5 | C19i—N2—C17 | 161.5 (5) |
O4—C4—H4B | 109.4 | C19—N2—C17 | 119.1 (5) |
H4A—C4—H4B | 109.2 | C19i—N2—C17i | 119.1 (5) |
O5—C5—H5A | 109.9 | C19—N2—C17i | 161.5 (5) |
O5—C5—H5B | 108.6 | N2—C17—C18 | 108.0 (7) |
H5A—C5—H5B | 106.9 | N2—C17—H17A | 110.1 |
C6—O6—W1i | 131.62 (5) | C18—C17—H17A | 110.1 |
C6—O6—W1 | 131.62 (5) | N2—C17—H17B | 110.1 |
W1i—O6—W1 | 96.74 (11) | C18—C17—H17B | 110.1 |
O6—C6—C7 | 110.52 (15) | H17A—C17—H17B | 108.4 |
O6—C6—H6A | 109.5 | C17—C18—H18A | 109.5 |
C7—C6—H6A | 109.5 | C17—C18—H18B | 109.5 |
O6—C6—H6B | 109.5 | H18A—C18—H18B | 109.5 |
C7—C6—H6B | 109.5 | C17—C18—H18C | 109.5 |
H6A—C6—H6B | 108.1 | H18A—C18—H18C | 109.5 |
C8—C7—C6 | 116.6 | H18B—C18—H18C | 109.5 |
C8—C7—H7A | 108.2 | N2—C19—C20 | 111.2 (13) |
C6—C7—H7A | 108.2 | N2—C19—H19A | 109.4 |
C8—C7—H7B | 108.2 | C20—C19—H19A | 109.4 |
C6—C7—H7B | 108.2 | N2—C19—H19B | 109.4 |
H7A—C7—H7B | 107.3 | C20—C19—H19B | 109.4 |
O7—C8—C7 | 128.5 | H19A—C19—H19B | 108.0 |
O7—C8—H8A | 105.2 | C19—C20—H20A | 109.5 |
C7—C8—H8A | 105.2 | C19—C20—H20B | 109.5 |
O7—C8—H8B | 105.2 | H20A—C20—H20B | 109.5 |
C7—C8—H8B | 105.2 | C19—C20—H20C | 109.5 |
H8A—C8—H8B | 105.9 | H20A—C20—H20C | 109.5 |
C8—O7—H7 | 109.5 | H20B—C20—H20C | 109.5 |
C10—C9—N1 | 115.6 (3) | C18A—C17A—H17C | 107.6 |
C10—C9—H9A | 108.4 | C18A—C17A—H17D | 107.6 |
N1—C9—H9A | 108.4 | H17C—C17A—H17D | 107.0 |
C10—C9—H9B | 108.4 | C17A—C18A—H18D | 109.5 |
N1—C9—H9B | 108.4 | C17A—C18A—H18E | 109.5 |
H9A—C9—H9B | 107.4 | H18D—C18A—H18E | 109.5 |
C9—C10—H10A | 109.5 | C17A—C18A—H18F | 109.5 |
C9—C10—H10B | 109.5 | H18D—C18A—H18F | 109.5 |
H10A—C10—H10B | 109.5 | H18E—C18A—H18F | 109.5 |
C9—C10—H10C | 109.5 | C20A—C19A—H19C | 108.2 |
H10A—C10—H10C | 109.5 | C20A—C19A—H19D | 108.2 |
H10B—C10—H10C | 109.5 | H19C—C19A—H19D | 107.3 |
C12—C11—N1 | 115.7 (3) | C19A—C20A—H20D | 109.5 |
C12—C11—H11A | 108.4 | C19A—C20A—H20E | 109.5 |
N1—C11—H11A | 108.4 | H20D—C20A—H20E | 109.5 |
C12—C11—H11B | 108.4 | C19A—C20A—H20F | 109.5 |
N1—C11—H11B | 108.4 | H20D—C20A—H20F | 109.5 |
H11A—C11—H11B | 107.4 | H20E—C20A—H20F | 109.5 |
C11—C12—H12A | 109.5 |
Symmetry code: (i) x, −y+3/2, z. |
D—H···A | D—H | H···A | D···A | D—H···A |
O7—H7···O5 | 0.84 | 2.02 | 2.838 (4) | 163 |
O7—H7···O6 | 0.84 | 2.48 | 3.077 (4) | 129 |
Experimental details
Crystal data | |
Chemical formula | (C8H20N)3[W2(CH3O)2(C3H7O2)(CO)6] |
Mr | 1063.63 |
Crystal system, space group | Orthorhombic, Pnma |
Temperature (K) | 110 |
a, b, c (Å) | 16.9476 (6), 24.1286 (9), 10.2457 (4) |
V (Å3) | 4189.7 (3) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 5.54 |
Crystal size (mm) | 0.26 × 0.15 × 0.13 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.297, 0.485 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 27335, 5181, 4411 |
Rint | 0.024 |
(sin θ/λ)max (Å−1) | 0.667 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.022, 0.060, 1.02 |
No. of reflections | 5181 |
No. of parameters | 274 |
No. of restraints | 5 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 2.55, −0.77 |
Computer programs: APEX2 (Bruker, 2003), APEX2, SAINT-Plus (Bruker, 2003), SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), SHELXTL (Sheldrick, 2000), SHELXTL.
W1—O6 | 2.1844 (18) | O5—C5 | 1.411 (5) |
W1—O4 | 2.1952 (19) | O5—W1i | 2.2010 (19) |
W1—O5 | 2.2010 (19) | O6—C6 | 1.403 (4) |
O4—C4 | 1.392 (5) | O6—W1i | 2.1844 (18) |
O4—W1i | 2.1952 (19) | ||
C4—O4—W1i | 121.34 (15) | W1—O5—W1i | 95.77 (11) |
W1i—O4—W1 | 96.11 (11) | C6—O6—W1i | 131.62 (5) |
C5—O5—W1 | 123.97 (13) | W1i—O6—W1 | 96.74 (11) |
Symmetry code: (i) x, −y+3/2, z. |
D—H···A | D—H | H···A | D···A | D—H···A |
O7—H7···O5 | 0.84 | 2.02 | 2.838 (4) | 163 |
O7—H7···O6 | 0.84 | 2.48 | 3.077 (4) | 129 |
Previously, we have presented the results of ligand exchange of the trianion of (Et4N)3[W2(OMe)3(CO)6], (II), with aryl alcohols (Klausmeyer et al., 2003). Subsequently, we reported the complete exchange reaction with an alcohol containing an sp3 carbon (Klausmeyer & Adrian, 2004). In each of the previous examples, there was always complete exchange of all of the methoxy groups regardless of how much of the new alcohol was added. In the present study, we were able to isolate the first known singly substituted derivative, (Et4N)3[W2(CO)6(OCH2CH2CH2OH)(CO)6], (I).
The trianion sits across a mirror plane such that one W(CO)3 group is unique and the two methoxy groups and all but the middle C atom (C7) of the 3-hydroxypropanolate ligand lie on the mirror plane. This forces the bridging ligands to be symmetric with respect to the W(CO)3 groups.
The environment around the W atom is a distorted octahedral, comprised of three CO ligands and three O atoms from the bridging alkoxy ligands. The W—O bond lengths are all slightly different from each other. For W—O(methoxy), the bond lengths average 2.198 (3) Å, and for W—O(diol), the bond length is slightly shorter at 2.1844 (18) Å.
The W—O—W angles are nearly the same, averaging 96.2 (2)°. The bridging O atoms would all be expected to have near tetrahedral geometry, but only the methoxy ligands approach this geometry, with the sum of their angles being 338.8 (2)° for O4 and 343.7 (2)° for O5. The angles around O6 of the 3-hydroxypropanolate ligand sum to 359.98 (17)°, which means it is planar. The planarity of this O atom is likely due to the pendent OH group of the 3-hydroxypropanolate ligand which bends back around toward the metal centers in order to engage in hydrogen bonding with the bridging O atoms, viz. O6 and O5 (Table 2). This would account for the deviation in geometry from the expected values.