metal-organic compounds
Tetrachlorido(1,10-phenanthroline-κ2N,N′)tin(IV) 1,2-dichloroethane hemisolvate
aDepartment of Chemistry, K. N. Toosi University of Technology, PO Box 16315-1618, Tehran 15418, Iran, and bOrganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
*Correspondence e-mail: momeni@kntu.ac.ir
The 4(C12H8N2)]·0.5C2H4Cl2, contains a tin complex and one disordered half-molecule of the solvent dichloroethane [occupancies 0.71 (2):0.29 (2)]. The six coordinate Sn(IV) atom adopts a distorted octahedral geometry. π–π interactions between adjacent aromatic rings [interplanar distance 3.483 (5) Å] seem to be effective in the stabilization of the crystal packing.
of the title compound, [SnClRelated literature
For tin(IV) halide complexes with a variety of Lewis bases, see: Harrison et al. (1972). For 1:1 complexes of the type [SnX4(NN)] (X = halide; NN = 1,10-phenanthroline or 2,2′-bipyridyl ligand), see: Matsubayashi & Iyoda (1977). For the structure of the title complex without the co-crystallized solvent, see: Su et al. (2007) and with co-crystallized benzene, see: Hall & Tiekink (1996). For the preparation of trans-[PtClMe2(CH2Cl)(phen)] used in the synthesis, see: Monaghan & Puddephatt (1985).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 1995); cell SAINT (Bruker, 1995); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008b); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.
Supporting information
10.1107/S1600536809017346/hg2511sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809017346/hg2511Isup2.hkl
A solution of SnCl2*2H2O (40 mg, 0.18 mmol) in THF (1 ml) and a solution of PPh3 (26 mg, 0.10 mmol) in dichloromethane (1 ml) were added to a dichloromethane solution (10 ml) of cis- and trans-[PtClMe2{CH2Cl}(phen)] (50 mg, 0.10 mmol) (Monaghan & Puddephatt, 1985) under Argon atmosphere. The reaction mixture was stirred for 3 h whereupon the yellow solution turned colourless. The solvent was removed under vacuum and the resulting white oily residue was solidified from CH2Cl2-diethylether solution to afford trans-[PtMe2(CH2Cl)(phen)(PPh3)][SnCl3]* C2Cl2H4. Yield: 85%; m.p. 429 K. Anal. Calc. for C35H35Cl6N2PPtSn: C, 40.4; H, 3.4; N, 2.7. Found: C, 39.7; H, 3.0; N, 2.5. NMR data in 1,2-dichloroethane/CDCl3: δ (31P) 1.50 [1J(195Pt-31P) = 1036 Hz]. The title complex crystallized during the slow decomposition of the organoplatinum(IV) species from a 1,2-dichloroethane solution yielding yellow polyhedral crystals.
For all hydrogen atoms the positions were calculated according to geometrical criteria. During the
the hydrogen atoms were allowed to shift with the parent C atoms with C-H - 0.95-0.98Å. The isotropic displacement parameters were set as 1.2 times the equivalent isotropic displacement parameters of the parent atoms.The solvent molecule 1,2-dichloroethane was found to be situated on an centre of inversion. In the final structure model the ethylene unit of the solvent molecule shows disorder over two different conformations with occupancies of 71 (2)% and 29 (2)%, respectively.
Data collection: SMART (Bruker, 1995); cell
SAINT (Bruker, 1995); data reduction: SAINT (Bruker, 1995); program(s) used to solve structure: SHELXTL (Sheldrick, 2008b); program(s) used to refine structure: SHELXTL (Sheldrick, 2008b); molecular graphics: SHELXTL (Sheldrick, 2008b); software used to prepare material for publication: SHELXTL (Sheldrick, 2008b).[SnCl4(C12H8N2)]·0.5C2H4Cl2 | Dx = 1.985 Mg m−3 |
Mr = 490.17 | Melting point: 429 K |
Orthorhombic, Pbca | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ac 2ab | Cell parameters from 7233 reflections |
a = 14.4478 (2) Å | θ = 3.3–24.3° |
b = 12.3681 (1) Å | µ = 2.37 mm−1 |
c = 18.3551 (2) Å | T = 200 K |
V = 3279.91 (6) Å3 | Polyhedron, yellow |
Z = 8 | 0.20 × 0.18 × 0.12 mm |
F(000) = 1896 |
Bruker SMART CCD diffractometer | 3747 independent reflections |
Radiation source: fine-focus sealed tube | 2954 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.058 |
ω scans | θmax = 27.5°, θmin = 2.2° |
Absorption correction: multi-scan (SADABS; Sheldrick, 2008a) | h = −18→18 |
Tmin = 0.649, Tmax = 0.765 | k = −16→16 |
31457 measured reflections | l = −23→23 |
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)] = 0.032 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.085 | H-atom parameters constrained |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0328P)2 + 8.0328P] where P = (Fo2 + 2Fc2)/3 |
3747 reflections | (Δ/σ)max = 0.001 |
195 parameters | Δρmax = 0.43 e Å−3 |
0 restraints | Δρmin = −1.16 e Å−3 |
[SnCl4(C12H8N2)]·0.5C2H4Cl2 | V = 3279.91 (6) Å3 |
Mr = 490.17 | Z = 8 |
Orthorhombic, Pbca | Mo Kα radiation |
a = 14.4478 (2) Å | µ = 2.37 mm−1 |
b = 12.3681 (1) Å | T = 200 K |
c = 18.3551 (2) Å | 0.20 × 0.18 × 0.12 mm |
Bruker SMART CCD diffractometer | 3747 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 2008a) | 2954 reflections with I > 2σ(I) |
Tmin = 0.649, Tmax = 0.765 | Rint = 0.058 |
31457 measured reflections |
R[F2 > 2σ(F2)] = 0.032 | 0 restraints |
wR(F2) = 0.085 | H-atom parameters constrained |
S = 1.05 | Δρmax = 0.43 e Å−3 |
3747 reflections | Δρmin = −1.16 e Å−3 |
195 parameters |
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) | |
Sn1 | 0.373296 (17) | 0.288908 (19) | 0.309792 (13) | 0.02635 (9) | |
Cl1 | 0.36021 (8) | 0.11063 (8) | 0.26347 (6) | 0.0421 (3) | |
Cl2 | 0.22059 (8) | 0.34733 (10) | 0.29708 (7) | 0.0511 (3) | |
Cl3 | 0.34492 (8) | 0.22870 (8) | 0.43486 (5) | 0.0390 (2) | |
Cl4 | 0.42343 (8) | 0.36387 (9) | 0.19523 (6) | 0.0435 (3) | |
N11 | 0.4206 (2) | 0.4450 (2) | 0.35899 (17) | 0.0283 (7) | |
C12 | 0.5099 (3) | 0.4445 (3) | 0.38213 (19) | 0.0269 (8) | |
C13 | 0.5508 (3) | 0.5344 (3) | 0.4160 (2) | 0.0306 (8) | |
C14 | 0.4951 (3) | 0.6273 (3) | 0.4237 (2) | 0.0374 (9) | |
H14 | 0.5197 | 0.6900 | 0.4463 | 0.045* | |
C15 | 0.4064 (3) | 0.6278 (3) | 0.3989 (2) | 0.0408 (10) | |
H15 | 0.3695 | 0.6911 | 0.4029 | 0.049* | |
C16 | 0.3698 (3) | 0.5334 (3) | 0.3672 (2) | 0.0366 (9) | |
H16 | 0.3073 | 0.5330 | 0.3512 | 0.044* | |
C17 | 0.6451 (3) | 0.5263 (3) | 0.4401 (2) | 0.0387 (10) | |
H17 | 0.6726 | 0.5861 | 0.4643 | 0.046* | |
N21 | 0.5220 (2) | 0.2640 (2) | 0.33599 (17) | 0.0283 (7) | |
C22 | 0.5637 (3) | 0.3483 (3) | 0.37021 (19) | 0.0274 (8) | |
C23 | 0.6563 (3) | 0.3443 (3) | 0.3932 (2) | 0.0327 (9) | |
C24 | 0.7061 (3) | 0.2487 (4) | 0.3787 (2) | 0.0407 (10) | |
H24 | 0.7690 | 0.2426 | 0.3931 | 0.049* | |
C25 | 0.6635 (3) | 0.1650 (4) | 0.3438 (2) | 0.0404 (10) | |
H25 | 0.6967 | 0.1004 | 0.3337 | 0.049* | |
C26 | 0.5708 (3) | 0.1745 (3) | 0.3230 (2) | 0.0342 (9) | |
H26 | 0.5418 | 0.1156 | 0.2990 | 0.041* | |
C27 | 0.6951 (3) | 0.4365 (4) | 0.4294 (2) | 0.0404 (10) | |
H27 | 0.7574 | 0.4339 | 0.4460 | 0.048* | |
Cl11 | 0.61683 (10) | 0.09903 (12) | 0.52665 (8) | 0.0666 (4) | |
C31 | 0.5152 (6) | 0.0229 (6) | 0.5363 (4) | 0.049 (3) | 0.71 (2) |
H31A | 0.5260 | −0.0370 | 0.5711 | 0.058* | 0.71 (2) |
H31B | 0.4654 | 0.0693 | 0.5563 | 0.058* | 0.71 (2) |
C31B | 0.5342 (18) | 0.024 (2) | 0.4789 (13) | 0.066 (8)* | 0.29 (2) |
H31C | 0.5043 | 0.0714 | 0.4427 | 0.079* | 0.29 (2) |
H31D | 0.5666 | −0.0343 | 0.4517 | 0.079* | 0.29 (2) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Sn1 | 0.03044 (14) | 0.02244 (13) | 0.02617 (14) | −0.00135 (10) | 0.00109 (10) | −0.00118 (10) |
Cl1 | 0.0475 (6) | 0.0298 (5) | 0.0491 (6) | −0.0029 (4) | −0.0022 (5) | −0.0091 (4) |
Cl2 | 0.0451 (6) | 0.0513 (7) | 0.0567 (7) | 0.0050 (5) | −0.0043 (5) | −0.0082 (6) |
Cl3 | 0.0451 (5) | 0.0396 (6) | 0.0323 (5) | −0.0064 (4) | 0.0046 (4) | 0.0031 (4) |
Cl4 | 0.0548 (7) | 0.0421 (6) | 0.0335 (5) | −0.0053 (5) | 0.0050 (5) | 0.0067 (5) |
N11 | 0.0316 (17) | 0.0237 (15) | 0.0296 (16) | −0.0005 (13) | −0.0005 (13) | 0.0005 (13) |
C12 | 0.0291 (19) | 0.0265 (18) | 0.0251 (18) | −0.0028 (15) | 0.0044 (15) | 0.0024 (15) |
C13 | 0.040 (2) | 0.0279 (19) | 0.0237 (18) | −0.0065 (16) | 0.0035 (16) | 0.0045 (15) |
C14 | 0.050 (3) | 0.026 (2) | 0.037 (2) | −0.0082 (18) | 0.0038 (19) | −0.0034 (17) |
C15 | 0.053 (3) | 0.027 (2) | 0.043 (2) | 0.0033 (19) | 0.000 (2) | −0.0039 (18) |
C16 | 0.038 (2) | 0.030 (2) | 0.042 (2) | 0.0034 (17) | −0.0026 (18) | −0.0033 (17) |
C17 | 0.042 (2) | 0.038 (2) | 0.036 (2) | −0.0172 (18) | −0.0013 (18) | 0.0018 (18) |
N21 | 0.0305 (17) | 0.0263 (16) | 0.0282 (16) | 0.0008 (13) | 0.0025 (13) | 0.0005 (13) |
C22 | 0.0311 (19) | 0.0263 (19) | 0.0246 (18) | −0.0041 (15) | 0.0046 (15) | 0.0046 (15) |
C23 | 0.0290 (19) | 0.038 (2) | 0.032 (2) | −0.0010 (17) | 0.0037 (16) | 0.0092 (17) |
C24 | 0.031 (2) | 0.044 (2) | 0.048 (3) | 0.0015 (19) | 0.0030 (19) | 0.013 (2) |
C25 | 0.039 (2) | 0.035 (2) | 0.047 (3) | 0.0108 (19) | 0.009 (2) | 0.0086 (19) |
C26 | 0.038 (2) | 0.0292 (19) | 0.035 (2) | 0.0025 (17) | 0.0072 (17) | 0.0012 (16) |
C27 | 0.032 (2) | 0.047 (3) | 0.041 (2) | −0.0098 (19) | −0.0041 (18) | 0.009 (2) |
Cl11 | 0.0691 (9) | 0.0617 (8) | 0.0691 (9) | −0.0178 (7) | 0.0144 (7) | −0.0220 (7) |
C31 | 0.061 (5) | 0.048 (4) | 0.037 (4) | −0.005 (3) | 0.021 (3) | −0.008 (3) |
Sn1—N21 | 2.224 (3) | N21—C26 | 1.334 (5) |
Sn1—N11 | 2.238 (3) | N21—C22 | 1.357 (5) |
Sn1—Cl2 | 2.3333 (12) | C22—C23 | 1.404 (5) |
Sn1—Cl1 | 2.3708 (10) | C23—C24 | 1.410 (6) |
Sn1—Cl4 | 2.4095 (10) | C23—C27 | 1.434 (6) |
Sn1—Cl3 | 2.4480 (10) | C24—C25 | 1.363 (6) |
Cl1—Cl2i | 3.5140 (16) | C24—H24 | 0.9500 |
N11—C16 | 1.325 (5) | C25—C26 | 1.397 (6) |
N11—C12 | 1.358 (5) | C25—H25 | 0.9500 |
C12—C13 | 1.404 (5) | C26—H26 | 0.9500 |
C12—C22 | 1.438 (5) | C27—H27 | 0.9500 |
C13—C14 | 1.409 (6) | Cl11—C31B | 1.75 (3) |
C13—C17 | 1.436 (6) | Cl11—C31 | 1.754 (8) |
C14—C15 | 1.360 (6) | C31—C31ii | 1.513 (17) |
C14—H14 | 0.9500 | C31—H31A | 0.9900 |
C15—C16 | 1.407 (6) | C31—H31B | 0.9900 |
C15—H15 | 0.9500 | C31B—C31Bii | 1.38 (5) |
C16—H16 | 0.9500 | C31B—H31C | 0.9900 |
C17—C27 | 1.339 (6) | C31B—H31D | 0.9900 |
C17—H17 | 0.9500 | ||
N21—Sn1—N11 | 74.74 (11) | C15—C16—H16 | 119.2 |
N21—Sn1—Cl2 | 168.06 (9) | C27—C17—C13 | 121.7 (4) |
N11—Sn1—Cl2 | 93.56 (9) | C27—C17—H17 | 119.2 |
N21—Sn1—Cl1 | 91.48 (8) | C13—C17—H17 | 119.2 |
N11—Sn1—Cl1 | 166.22 (8) | C26—N21—C22 | 119.1 (3) |
Cl2—Sn1—Cl1 | 100.18 (4) | C26—N21—Sn1 | 126.0 (3) |
N21—Sn1—Cl4 | 87.22 (9) | C22—N21—Sn1 | 115.0 (2) |
N11—Sn1—Cl4 | 85.89 (8) | N21—C22—C23 | 122.3 (4) |
Cl2—Sn1—Cl4 | 94.46 (4) | N21—C22—C12 | 117.8 (3) |
Cl1—Sn1—Cl4 | 93.95 (4) | C23—C22—C12 | 119.8 (4) |
N21—Sn1—Cl3 | 85.24 (8) | C22—C23—C24 | 117.3 (4) |
N11—Sn1—Cl3 | 86.29 (8) | C22—C23—C27 | 119.0 (4) |
Cl2—Sn1—Cl3 | 91.70 (4) | C24—C23—C27 | 123.8 (4) |
Cl1—Sn1—Cl3 | 92.29 (4) | C25—C24—C23 | 119.7 (4) |
Cl4—Sn1—Cl3 | 170.32 (4) | C25—C24—H24 | 120.1 |
C16—N11—C12 | 119.6 (3) | C23—C24—H24 | 120.1 |
C16—N11—Sn1 | 126.0 (3) | C24—C25—C26 | 119.8 (4) |
C12—N11—Sn1 | 114.4 (2) | C24—C25—H25 | 120.1 |
N11—C12—C13 | 122.3 (3) | C26—C25—H25 | 120.1 |
N11—C12—C22 | 118.0 (3) | N21—C26—C25 | 121.9 (4) |
C13—C12—C22 | 119.7 (3) | N21—C26—H26 | 119.1 |
C12—C13—C14 | 116.7 (4) | C25—C26—H26 | 119.1 |
C12—C13—C17 | 118.7 (4) | C17—C27—C23 | 121.1 (4) |
C14—C13—C17 | 124.6 (4) | C17—C27—H27 | 119.5 |
C15—C14—C13 | 120.6 (4) | C23—C27—H27 | 119.5 |
C15—C14—H14 | 119.7 | C31B—Cl11—C31 | 36.2 (7) |
C13—C14—H14 | 119.7 | Cl11—C31—H31A | 109.5 |
C14—C15—C16 | 119.2 (4) | Cl11—C31—H31B | 109.5 |
C14—C15—H15 | 120.4 | H31A—C31—H31B | 108.1 |
C16—C15—H15 | 120.4 | Cl11—C31B—H31C | 108.4 |
N11—C16—C15 | 121.6 (4) | Cl11—C31B—H31D | 108.4 |
N11—C16—H16 | 119.2 | H31C—C31B—H31D | 107.4 |
N21—Sn1—N11—C16 | 177.5 (3) | Cl4—Sn1—N21—C26 | −92.4 (3) |
Cl2—Sn1—N11—C16 | −4.9 (3) | Cl3—Sn1—N21—C26 | 93.7 (3) |
Cl1—Sn1—N11—C16 | 179.1 (3) | N11—Sn1—N21—C22 | 3.2 (2) |
Cl4—Sn1—N11—C16 | 89.3 (3) | Cl2—Sn1—N21—C22 | −8.7 (6) |
Cl3—Sn1—N11—C16 | −96.4 (3) | Cl1—Sn1—N21—C22 | −176.4 (2) |
N21—Sn1—N11—C12 | −2.9 (2) | Cl4—Sn1—N21—C22 | 89.7 (2) |
Cl2—Sn1—N11—C12 | 174.6 (2) | Cl3—Sn1—N21—C22 | −84.2 (2) |
Cl1—Sn1—N11—C12 | −1.3 (5) | C26—N21—C22—C23 | −0.7 (5) |
Cl4—Sn1—N11—C12 | −91.2 (2) | Sn1—N21—C22—C23 | 177.4 (3) |
Cl3—Sn1—N11—C12 | 83.1 (2) | C26—N21—C22—C12 | 178.7 (3) |
C16—N11—C12—C13 | 1.2 (5) | Sn1—N21—C22—C12 | −3.2 (4) |
Sn1—N11—C12—C13 | −178.4 (3) | N11—C12—C22—N21 | 0.5 (5) |
C16—N11—C12—C22 | −178.1 (3) | C13—C12—C22—N21 | −178.7 (3) |
Sn1—N11—C12—C22 | 2.4 (4) | N11—C12—C22—C23 | 180.0 (3) |
N11—C12—C13—C14 | −1.4 (5) | C13—C12—C22—C23 | 0.7 (5) |
C22—C12—C13—C14 | 177.9 (3) | N21—C22—C23—C24 | 0.7 (5) |
N11—C12—C13—C17 | 178.8 (3) | C12—C22—C23—C24 | −178.7 (3) |
C22—C12—C13—C17 | −2.0 (5) | N21—C22—C23—C27 | −179.7 (3) |
C12—C13—C14—C15 | −0.1 (6) | C12—C22—C23—C27 | 1.0 (5) |
C17—C13—C14—C15 | 179.7 (4) | C22—C23—C24—C25 | −0.3 (6) |
C13—C14—C15—C16 | 1.7 (6) | C27—C23—C24—C25 | −179.9 (4) |
C12—N11—C16—C15 | 0.5 (6) | C23—C24—C25—C26 | −0.2 (6) |
Sn1—N11—C16—C15 | −180.0 (3) | C22—N21—C26—C25 | 0.1 (6) |
C14—C15—C16—N11 | −2.0 (7) | Sn1—N21—C26—C25 | −177.7 (3) |
C12—C13—C17—C27 | 1.7 (6) | C24—C25—C26—N21 | 0.3 (6) |
C14—C13—C17—C27 | −178.1 (4) | C13—C17—C27—C23 | −0.1 (6) |
N11—Sn1—N21—C26 | −178.8 (3) | C22—C23—C27—C17 | −1.3 (6) |
Cl2—Sn1—N21—C26 | 169.2 (3) | C24—C23—C27—C17 | 178.3 (4) |
Cl1—Sn1—N21—C26 | 1.5 (3) |
Symmetry codes: (i) −x+1/2, y−1/2, z; (ii) −x+1, −y, −z+1. |
Experimental details
Crystal data | |
Chemical formula | [SnCl4(C12H8N2)]·0.5C2H4Cl2 |
Mr | 490.17 |
Crystal system, space group | Orthorhombic, Pbca |
Temperature (K) | 200 |
a, b, c (Å) | 14.4478 (2), 12.3681 (1), 18.3551 (2) |
V (Å3) | 3279.91 (6) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 2.37 |
Crystal size (mm) | 0.20 × 0.18 × 0.12 |
Data collection | |
Diffractometer | Bruker SMART CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 2008a) |
Tmin, Tmax | 0.649, 0.765 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 31457, 3747, 2954 |
Rint | 0.058 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.032, 0.085, 1.05 |
No. of reflections | 3747 |
No. of parameters | 195 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.43, −1.16 |
Computer programs: SMART (Bruker, 1995), SAINT (Bruker, 1995), SHELXTL (Sheldrick, 2008b).
Sn1—N21 | 2.224 (3) | Sn1—Cl4 | 2.4095 (10) |
Sn1—N11 | 2.238 (3) | Sn1—Cl3 | 2.4480 (10) |
Sn1—Cl2 | 2.3333 (12) | Cl1—Cl2i | 3.5140 (16) |
Sn1—Cl1 | 2.3708 (10) | ||
N21—Sn1—N11 | 74.74 (11) | Cl4—Sn1—Cl3 | 170.32 (4) |
Cl2—Sn1—Cl1 | 100.18 (4) |
Symmetry code: (i) −x+1/2, y−1/2, z. |
Acknowledgements
We thank the Science Research Council of K. N. Toosi University of Technology for financial support. We also thank Johnson Matthey for the generous loan of platinum salt.
References
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It has long been known that tin(IV) halides form complexes with a variety of Lewis bases (Harrison et al., 1972). Bidentate diimine ligandes are one of the strongest bases towards tin(IV) halides and more often form 1:1 complexes of the type [SnX4(NN)] (X = halide; NN = diimine ligand). Among them, the 1,10-phenanthroline and 2,2'-bipyridyl ligands are of particular interest (Matsubayashi & Iyoda, 1977). The title compound reported here, an adventitious result of our work on organoplatinum complexes, has a distorted octahedral geometry including different Sn—Cl and Sn—N bond lengths (see Fig. 1). The Cl3—Sn—Cl4 geometry shows remarkable deviation from linearity with a bond angle of 170.32 (4)°. The contraction of N11—Sn1—N21 to 74.7 (1) from the ideal 90° is typical for a chelating phenanthroline ligand. Figure 2 depicts the π-π interaction between adjacent aromatic rings, which seems, among Cl···Cl van der Waals contacts, to be significant in the stabilization of the crystal packing, as both preliminary structure determinations of the same complex, either without cocrystallized solvent (Su et al., 2007) or with co-crystallized benzene (Hall & Tiekink, 1996) show the same intermolecular contact features.