Buy article online - an online subscription or single-article purchase is required to access this article.
An asymmetric bis(silyl) niobocene hydride complex, namely, bis(η
5-cyclopentadienyl)(fluorodimethylsilyl)hydrido(iododimethylsilyl)niobium, [Nb(C
5H
5)
2(C
2H
6FSi)(C
2H
6ISi)H] or Cp
2NbH(SiIMe
2)(SiFMe
2), has been studied to determine the effect of the silyl ligand on the position of the hydride attached to the Nb atom. It has been shown that when a Group 17 atom is substituted onto one of the silyl ligands, there is a greater interaction between the hydride and this ligand, as demonstrated by a shorter Si
H distance. In the present work, we have investigated the effect when the silyl ligands are substituted by different Group 17 atoms. We present here the structure and DFT calculations of Cp
2NbH(SiIMe
2)(SiFMe
2), showing that the position of the hydride is located between the two silyl ligands. The results from our investigation show that the hydride is closer to the silyl ligand that is substituted by fluorine.
Supporting information
CCDC reference: 2234260
Data collection: SMART (Bruker, 2000); cell refinement: SMART (Bruker, 2000); data reduction: SAINT (Bruker, 2000); program(s) used to solve structure: SHELXT (Sheldrick, 2015a); program(s) used to refine structure: SHELXL2018 (Sheldrick, 2015b); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).
Bis(
η5-cyclopentadienyl)(fluorodimethylsilyl)hydrido(iododimethylsilyl)niobium
top
Crystal data top
[Nb(C5H5)2(C2H6FSi)(C2H6ISi)H] | F(000) = 1904 |
Mr = 486.31 | Dx = 1.845 Mg m−3 |
Monoclinic, C2/c | Mo Kα radiation, λ = 0.71073 Å |
a = 15.1427 (10) Å | Cell parameters from 7099 reflections |
b = 8.9369 (10) Å | θ = 2.7–27.5° |
c = 26.143 (2) Å | µ = 2.58 mm−1 |
β = 98.304 (2)° | T = 133 K |
V = 3500.8 (5) Å3 | Prism, purple |
Z = 8 | 0.15 × 0.10 × 0.05 mm |
Data collection top
Bruker SMART APEX CCD area detector diffractometer | 3520 reflections with I > 2σ(I) |
phi and ω scans | Rint = 0.028 |
Absorption correction: multi-scan (SADABS; Krause et al., 2015) | θmax = 27.5°, θmin = 1.6° |
Tmin = 0.649, Tmax = 0.984 | h = −19→18 |
10487 measured reflections | k = −11→10 |
3966 independent reflections | l = −30→33 |
Refinement top
Refinement on F2 | 0 restraints |
Least-squares matrix: full | Hydrogen site location: mixed |
R[F2 > 2σ(F2)] = 0.029 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.069 | w = 1/[σ2(Fo2) + (0.0302P)2 + 9.7861P] where P = (Fo2 + 2Fc2)/3 |
S = 1.02 | (Δ/σ)max = 0.002 |
3966 reflections | Δρmax = 1.56 e Å−3 |
180 parameters | Δρmin = −0.47 e Å−3 |
Special details top
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes)
are estimated using the full covariance matrix. The cell esds are taken
into account individually in the estimation of esds in distances, angles
and torsion angles; correlations between esds in cell parameters are only
used when they are defined by crystal symmetry. An approximate (isotropic)
treatment of cell esds is used for estimating esds involving l.s. planes. |
Refinement. Data for the title compound, 1, were collected using a
Bruker SMART
APEX diffractometer with Mo-Kα radiation (λ = 0.71073 Å). The cell
parameters were obtained from the least squares refinement of the reflections
(collected from 60 frames) using SMART (Bruker AXS, 2000).
Data collection was
performed using SMART and data processing was performed using the SAINT
(Bruker AXS, 2000) program. Initial atomic positions
for 1 were located
using direct methods. The structure was corrected for absorption effects using
SADABS (Krause et al., 2015) and refined by least squares methods using
SHELXL2018 (Sheldrick, 2015a; 2015b). |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top | x | y | z | Uiso*/Ueq | |
Nb1 | 0.31140 (2) | 0.50211 (3) | 0.61509 (2) | 0.01973 (8) | |
I1 | 0.45368 (2) | 0.16640 (3) | 0.54217 (2) | 0.03710 (8) | |
F1 | 0.24068 (14) | 0.7889 (3) | 0.69500 (8) | 0.0431 (5) | |
Si1 | 0.46281 (5) | 0.36884 (9) | 0.61508 (3) | 0.02300 (17) | |
Si2 | 0.33328 (6) | 0.69613 (9) | 0.69073 (3) | 0.02609 (18) | |
C1 | 0.3622 (2) | 0.5701 (4) | 0.53535 (12) | 0.0298 (7) | |
H1 | 0.408590 | 0.516302 | 0.522608 | 0.036* | |
C2 | 0.3731 (2) | 0.6960 (4) | 0.56844 (12) | 0.0293 (7) | |
H2 | 0.428371 | 0.740172 | 0.582471 | 0.035* | |
C3 | 0.2881 (2) | 0.7446 (4) | 0.57706 (12) | 0.0308 (7) | |
H3 | 0.275747 | 0.828220 | 0.597313 | 0.037* | |
C4 | 0.2250 (2) | 0.6473 (4) | 0.55032 (13) | 0.0335 (7) | |
H4 | 0.162166 | 0.653000 | 0.549518 | 0.040* | |
C5 | 0.2709 (2) | 0.5392 (4) | 0.52479 (12) | 0.0321 (7) | |
H5 | 0.244293 | 0.459411 | 0.504032 | 0.039* | |
C6 | 0.2857 (2) | 0.2455 (3) | 0.63630 (13) | 0.0304 (7) | |
H6 | 0.326113 | 0.168634 | 0.630107 | 0.036* | |
C7 | 0.2890 (2) | 0.3312 (3) | 0.68197 (12) | 0.0285 (7) | |
H7 | 0.333064 | 0.323510 | 0.711634 | 0.034* | |
C8 | 0.2155 (2) | 0.4302 (4) | 0.67600 (13) | 0.0313 (7) | |
H8 | 0.200615 | 0.498845 | 0.701159 | 0.038* | |
C9 | 0.1683 (2) | 0.4089 (4) | 0.62609 (14) | 0.0342 (7) | |
H9 | 0.116339 | 0.461912 | 0.611453 | 0.041* | |
C10 | 0.2113 (2) | 0.2951 (4) | 0.60154 (14) | 0.0325 (7) | |
H10 | 0.193363 | 0.258247 | 0.567545 | 0.039* | |
C11 | 0.5091 (2) | 0.2520 (4) | 0.67259 (13) | 0.0313 (7) | |
H11A | 0.566414 | 0.208898 | 0.666914 | 0.047* | |
H11B | 0.467155 | 0.171370 | 0.677216 | 0.047* | |
H11C | 0.517937 | 0.314972 | 0.703606 | 0.047* | |
C12 | 0.5611 (2) | 0.4817 (4) | 0.60056 (13) | 0.0330 (7) | |
H12A | 0.577193 | 0.555595 | 0.628025 | 0.049* | |
H12B | 0.545492 | 0.533282 | 0.567416 | 0.049* | |
H12C | 0.611916 | 0.414945 | 0.598690 | 0.049* | |
C13 | 0.4146 (3) | 0.8528 (4) | 0.68581 (15) | 0.0405 (9) | |
H13A | 0.397704 | 0.906630 | 0.653199 | 0.061* | |
H13B | 0.474792 | 0.811586 | 0.686841 | 0.061* | |
H13C | 0.413656 | 0.921946 | 0.714836 | 0.061* | |
C14 | 0.3663 (2) | 0.6178 (4) | 0.75750 (12) | 0.0311 (7) | |
H14A | 0.371346 | 0.699497 | 0.782780 | 0.047* | |
H14B | 0.423898 | 0.566657 | 0.759286 | 0.047* | |
H14C | 0.320865 | 0.546566 | 0.765253 | 0.047* | |
H1A | 0.407 (3) | 0.544 (4) | 0.6576 (15) | 0.043 (11)* | |
Atomic displacement parameters (Å2) top | U11 | U22 | U33 | U12 | U13 | U23 |
Nb1 | 0.01890 (13) | 0.02119 (13) | 0.01944 (13) | −0.00022 (9) | 0.00392 (10) | 0.00287 (10) |
I1 | 0.02859 (12) | 0.04315 (14) | 0.03831 (14) | 0.00405 (9) | 0.00056 (9) | −0.01994 (10) |
F1 | 0.0341 (11) | 0.0554 (13) | 0.0392 (12) | 0.0196 (10) | 0.0038 (9) | −0.0108 (10) |
Si1 | 0.0199 (4) | 0.0253 (4) | 0.0235 (4) | 0.0000 (3) | 0.0025 (3) | −0.0041 (3) |
Si2 | 0.0290 (4) | 0.0235 (4) | 0.0255 (4) | 0.0051 (3) | 0.0032 (3) | −0.0004 (3) |
C1 | 0.0323 (17) | 0.0386 (18) | 0.0199 (15) | −0.0005 (14) | 0.0085 (12) | 0.0085 (13) |
C2 | 0.0322 (17) | 0.0322 (16) | 0.0241 (15) | −0.0031 (13) | 0.0056 (12) | 0.0095 (13) |
C3 | 0.0335 (17) | 0.0299 (17) | 0.0288 (16) | 0.0048 (13) | 0.0038 (13) | 0.0107 (13) |
C4 | 0.0279 (17) | 0.0406 (19) | 0.0307 (17) | 0.0024 (14) | 0.0003 (13) | 0.0149 (14) |
C5 | 0.0334 (18) | 0.0390 (18) | 0.0220 (15) | −0.0050 (14) | −0.0028 (13) | 0.0066 (14) |
C6 | 0.0305 (17) | 0.0217 (15) | 0.0399 (18) | −0.0041 (12) | 0.0080 (14) | 0.0040 (13) |
C7 | 0.0296 (16) | 0.0301 (16) | 0.0265 (16) | −0.0030 (13) | 0.0066 (13) | 0.0097 (13) |
C8 | 0.0302 (17) | 0.0330 (17) | 0.0337 (17) | −0.0017 (13) | 0.0153 (14) | 0.0075 (14) |
C9 | 0.0229 (16) | 0.0382 (18) | 0.0422 (19) | −0.0036 (13) | 0.0076 (14) | 0.0120 (15) |
C10 | 0.0285 (17) | 0.0328 (17) | 0.0360 (18) | −0.0124 (13) | 0.0037 (14) | 0.0018 (14) |
C11 | 0.0292 (17) | 0.0289 (16) | 0.0332 (17) | 0.0026 (13) | −0.0038 (13) | −0.0019 (13) |
C12 | 0.0237 (16) | 0.0421 (19) | 0.0346 (18) | −0.0065 (13) | 0.0087 (13) | −0.0077 (15) |
C13 | 0.054 (2) | 0.0247 (17) | 0.040 (2) | −0.0034 (15) | −0.0028 (17) | −0.0002 (14) |
C14 | 0.0363 (18) | 0.0330 (17) | 0.0242 (16) | 0.0051 (14) | 0.0049 (13) | −0.0018 (13) |
Geometric parameters (Å, º) top
Nb1—C4 | 2.371 (3) | C4—C5 | 1.412 (5) |
Nb1—C5 | 2.375 (3) | C4—H4 | 0.9500 |
Nb1—C9 | 2.378 (3) | C5—H5 | 0.9500 |
Nb1—C7 | 2.383 (3) | C6—C10 | 1.412 (5) |
Nb1—C10 | 2.385 (3) | C6—C7 | 1.413 (5) |
Nb1—C2 | 2.386 (3) | C6—H6 | 0.9500 |
Nb1—C3 | 2.389 (3) | C7—C8 | 1.412 (5) |
Nb1—C8 | 2.393 (3) | C7—H7 | 0.9500 |
Nb1—C1 | 2.402 (3) | C8—C9 | 1.407 (5) |
Nb1—C6 | 2.404 (3) | C8—H8 | 0.9500 |
Nb1—Si1 | 2.5837 (9) | C9—C10 | 1.411 (5) |
Nb1—Si2 | 2.6148 (9) | C9—H9 | 0.9500 |
Nb1—H1A | 1.74 (4) | C10—H10 | 0.9500 |
I1—Si1 | 2.6172 (9) | C11—H11A | 0.9800 |
F1—Si2 | 1.647 (2) | C11—H11B | 0.9800 |
Si1—C11 | 1.881 (3) | C11—H11C | 0.9800 |
Si1—C12 | 1.882 (3) | C12—H12A | 0.9800 |
Si2—C14 | 1.880 (3) | C12—H12B | 0.9800 |
Si2—C13 | 1.881 (4) | C12—H12C | 0.9800 |
C1—C5 | 1.398 (5) | C13—H13A | 0.9800 |
C1—C2 | 1.414 (5) | C13—H13B | 0.9800 |
C1—H1 | 0.9500 | C13—H13C | 0.9800 |
C2—C3 | 1.407 (5) | C14—H14A | 0.9800 |
C2—H2 | 0.9500 | C14—H14B | 0.9800 |
C3—C4 | 1.402 (5) | C14—H14C | 0.9800 |
C3—H3 | 0.9500 | | |
| | | |
C4—Nb1—C5 | 34.62 (12) | F1—Si2—Nb1 | 111.66 (8) |
C4—Nb1—C9 | 81.93 (12) | C14—Si2—Nb1 | 116.30 (11) |
C5—Nb1—C9 | 93.44 (12) | C13—Si2—Nb1 | 117.05 (13) |
C4—Nb1—C7 | 138.79 (12) | C5—C1—C2 | 107.6 (3) |
C5—Nb1—C7 | 140.82 (12) | C5—C1—Nb1 | 71.91 (18) |
C9—Nb1—C7 | 57.15 (11) | C2—C1—Nb1 | 72.17 (17) |
C4—Nb1—C10 | 92.58 (12) | C5—C1—H1 | 126.2 |
C5—Nb1—C10 | 83.88 (12) | C2—C1—H1 | 126.2 |
C9—Nb1—C10 | 34.46 (12) | Nb1—C1—H1 | 121.5 |
C7—Nb1—C10 | 57.10 (11) | C3—C2—C1 | 108.4 (3) |
C4—Nb1—C2 | 56.91 (12) | C3—C2—Nb1 | 73.01 (18) |
C5—Nb1—C2 | 56.94 (11) | C1—C2—Nb1 | 73.47 (18) |
C9—Nb1—C2 | 138.37 (11) | C3—C2—H2 | 125.8 |
C7—Nb1—C2 | 161.55 (12) | C1—C2—H2 | 125.8 |
C10—Nb1—C2 | 140.78 (12) | Nb1—C2—H2 | 119.5 |
C4—Nb1—C3 | 34.26 (12) | C4—C3—C2 | 107.6 (3) |
C5—Nb1—C3 | 57.19 (12) | C4—C3—Nb1 | 72.16 (18) |
C9—Nb1—C3 | 106.61 (12) | C2—C3—Nb1 | 72.72 (18) |
C7—Nb1—C3 | 149.18 (11) | C4—C3—H3 | 126.2 |
C10—Nb1—C3 | 126.11 (12) | C2—C3—H3 | 126.2 |
C2—Nb1—C3 | 34.27 (11) | Nb1—C3—H3 | 120.7 |
C4—Nb1—C8 | 107.27 (12) | C3—C4—C5 | 108.3 (3) |
C5—Nb1—C8 | 127.19 (12) | C3—C4—Nb1 | 73.58 (18) |
C9—Nb1—C8 | 34.31 (12) | C5—C4—Nb1 | 72.85 (18) |
C7—Nb1—C8 | 34.40 (11) | C3—C4—H4 | 125.9 |
C10—Nb1—C8 | 57.10 (12) | C5—C4—H4 | 125.9 |
C2—Nb1—C8 | 148.80 (11) | Nb1—C4—H4 | 119.5 |
C3—Nb1—C8 | 116.96 (11) | C1—C5—C4 | 108.2 (3) |
C4—Nb1—C1 | 56.96 (12) | C1—C5—Nb1 | 74.05 (18) |
C5—Nb1—C1 | 34.04 (11) | C4—C5—Nb1 | 72.53 (18) |
C9—Nb1—C1 | 127.27 (12) | C1—C5—H5 | 125.9 |
C7—Nb1—C1 | 153.70 (11) | C4—C5—H5 | 125.9 |
C10—Nb1—C1 | 110.11 (12) | Nb1—C5—H5 | 119.4 |
C2—Nb1—C1 | 34.35 (11) | C10—C6—C7 | 107.5 (3) |
C3—Nb1—C1 | 57.04 (12) | C10—C6—Nb1 | 72.14 (18) |
C8—Nb1—C1 | 161.22 (12) | C7—C6—Nb1 | 72.01 (17) |
C4—Nb1—C6 | 126.55 (12) | C10—C6—H6 | 126.2 |
C5—Nb1—C6 | 109.59 (12) | C7—C6—H6 | 126.2 |
C9—Nb1—C6 | 57.11 (12) | Nb1—C6—H6 | 121.4 |
C7—Nb1—C6 | 34.34 (11) | C8—C7—C6 | 108.4 (3) |
C10—Nb1—C6 | 34.30 (11) | C8—C7—Nb1 | 73.20 (17) |
C2—Nb1—C6 | 154.04 (12) | C6—C7—Nb1 | 73.65 (18) |
C3—Nb1—C6 | 160.40 (11) | C8—C7—H7 | 125.8 |
C8—Nb1—C6 | 57.05 (12) | C6—C7—H7 | 125.8 |
C1—Nb1—C6 | 121.63 (12) | Nb1—C7—H7 | 119.2 |
C4—Nb1—Si1 | 130.56 (9) | C9—C8—C7 | 107.7 (3) |
C5—Nb1—Si1 | 99.56 (9) | C9—C8—Nb1 | 72.27 (18) |
C9—Nb1—Si1 | 131.51 (9) | C7—C8—Nb1 | 72.40 (17) |
C7—Nb1—Si1 | 85.71 (8) | C9—C8—H8 | 126.1 |
C10—Nb1—Si1 | 100.80 (9) | C7—C8—H8 | 126.1 |
C2—Nb1—Si1 | 85.51 (8) | Nb1—C8—H8 | 121.0 |
C3—Nb1—Si1 | 119.71 (8) | C8—C9—C10 | 108.2 (3) |
C8—Nb1—Si1 | 120.01 (8) | C8—C9—Nb1 | 73.42 (18) |
C1—Nb1—Si1 | 73.80 (8) | C10—C9—Nb1 | 73.06 (18) |
C6—Nb1—Si1 | 74.56 (8) | C8—C9—H9 | 125.9 |
C4—Nb1—Si2 | 100.01 (9) | C10—C9—H9 | 125.9 |
C5—Nb1—Si2 | 130.19 (9) | Nb1—C9—H9 | 119.5 |
C9—Nb1—Si2 | 99.16 (9) | C9—C10—C6 | 108.1 (3) |
C7—Nb1—Si2 | 83.46 (8) | C9—C10—Nb1 | 72.48 (18) |
C10—Nb1—Si2 | 129.42 (9) | C6—C10—Nb1 | 73.57 (18) |
C2—Nb1—Si2 | 83.61 (8) | C9—C10—H10 | 125.9 |
C3—Nb1—Si2 | 73.03 (8) | C6—C10—H10 | 125.9 |
C8—Nb1—Si2 | 72.41 (9) | Nb1—C10—H10 | 119.8 |
C1—Nb1—Si2 | 117.83 (9) | Si1—C11—H11A | 109.5 |
C6—Nb1—Si2 | 117.72 (8) | Si1—C11—H11B | 109.5 |
Si1—Nb1—Si2 | 106.87 (3) | H11A—C11—H11B | 109.5 |
C4—Nb1—H1A | 131.4 (13) | Si1—C11—H11C | 109.5 |
C5—Nb1—H1A | 132.7 (13) | H11A—C11—H11C | 109.5 |
C9—Nb1—H1A | 133.6 (13) | H11B—C11—H11C | 109.5 |
C7—Nb1—H1A | 82.2 (13) | Si1—C12—H12A | 109.5 |
C10—Nb1—H1A | 135.9 (13) | Si1—C12—H12B | 109.5 |
C2—Nb1—H1A | 79.4 (13) | H12A—C12—H12B | 109.5 |
C3—Nb1—H1A | 97.4 (13) | Si1—C12—H12C | 109.5 |
C8—Nb1—H1A | 99.4 (13) | H12A—C12—H12C | 109.5 |
C1—Nb1—H1A | 99.1 (13) | H12B—C12—H12C | 109.5 |
C6—Nb1—H1A | 102.0 (13) | Si2—C13—H13A | 109.5 |
Si1—Nb1—H1A | 56.0 (13) | Si2—C13—H13B | 109.5 |
Si2—Nb1—H1A | 50.8 (13) | H13A—C13—H13B | 109.5 |
C11—Si1—C12 | 104.13 (16) | Si2—C13—H13C | 109.5 |
C11—Si1—Nb1 | 118.96 (11) | H13A—C13—H13C | 109.5 |
C12—Si1—Nb1 | 118.75 (12) | H13B—C13—H13C | 109.5 |
C11—Si1—I1 | 99.96 (11) | Si2—C14—H14A | 109.5 |
C12—Si1—I1 | 100.58 (11) | Si2—C14—H14B | 109.5 |
Nb1—Si1—I1 | 111.42 (3) | H14A—C14—H14B | 109.5 |
F1—Si2—C14 | 103.85 (14) | Si2—C14—H14C | 109.5 |
F1—Si2—C13 | 101.64 (16) | H14A—C14—H14C | 109.5 |
C14—Si2—C13 | 104.57 (16) | H14B—C14—H14C | 109.5 |
Selected bond lengths and angles (Å, °) for complexes
1, 2, and 3 topBond | 1 [Cp2NbH(SiIMe2)(SiFMe2)] | 2 [Cp2NbH(SiClMe2)(SiFMe2)] | 3 [Cp2NbH(SiBrMe2)(SiFMe2)] |
Nb1—H1a | 1.74 (4) | 1.73 (3) | 1.75 (5) |
Si1—H1a | 2.16 (4) | 2.11 (4) | 2.16 (6) |
Si2—H1a | 2.03 (4) | 2.07 (3) | 2.03 (6) |
Si1—X (Cl, I, or Br) | 2.6172 (9)° | 2.180 (1) | 2.369 (1) |
Si2—F1 | 1.647 (2) | 1.650 (2) | 1.670 (4) |
| | | |
Angle | | | |
Si1—Nb1—H1a | 56.0 (13) | 53.6 (11) | 55.7 (18) |
Si2—Nb1—H1a | 50.8 (13) | 52.2 (11) | 50.6 (18) |
Nb1—Si1—X (Cl, I, or Br) | 111.42 (3) | 113.68 (4) | 113.15 (5) |
C11—Si1—X (Cl, I, or Br) | 99.96 (11) | 101.1 (1) | 100.5 (2) |
C12—Si1—X (Cl, I, or Br) | 100.58 (11) | 100.3 (1) | 100.3 (2) |
Nb1—Si2—F1 | 111.66 (9) | 112.20 (7) | 113.0 (2) |
C13—Si2—F1 | 101.64 (16) | 102.9 (1) | 105.0 (2) |
C14—Si2—F1 | 103.85 (14) | 101.4 (1) | 99.0 (2) |
Note: (*) Si1 is from the heavier halogen-substituted silyl ligand
(iodine for 1, chlorine for 2, and bromine for
3). Si2 is from the fluorine-substituted silyl ligand. |
Selected bond sengths and angles (Å, °) along with computed values for the
title complex topX-ray structure | | Optimized structure | |
Bond | Length | Bond | Length |
Nb1—H1a | 1.74 (4) | Nb1-H1a | 1.792 |
Si1—H1a | 2.16 (4) | Si1-H1a | 2.108 |
Si2—H1a | 2.03 (4) | Si2-H1a | 2.105 |
Si1—I1 | 2.6172 (9) | Si1-I1 | 2.599 |
Si2—F1 | 1.647 (2) | Si2-F1 | 1.672 |
| | | |
Angle | Measured | Angle | Computed |
Si1—Nb1—H1a | 56.0 (13) | Si1-Nb1-H1a | 53.44 |
Si2—Nb1—H1a | 50.8 (13) | Si2-Nb1-H1a | 53.23 |
Nb—Si1—I1 | 111.42 (3) | Nb-Si1-I1 | 112.65 |
C11—Si1—I1 | 111.42 (3)° | C11-Si1-I1 | 101.89 |
C12—Si1—I1 | 99.96 (11)° | C12-Si1-I1 | 101.90 |
Nb—Si2—F1 | 111.66 (8) | Nb-Si2-1 | 110.72 |
C13—Si2—F1 | 101.64 (16)° | C13-Si2-F1 | 103.44 |
C14—Si2—F1 | 103.85 (14)° | C14-Si2-F1 | 103.45 |
Subscribe to Acta Crystallographica Section C: Structural Chemistry
The full text of this article is available to subscribers to the journal.
If you have already registered and are using a computer listed in your registration details, please email
support@iucr.org for assistance.