metal-organic compounds
n-Butyldichlorido(2-{(1E)-1-[2-(pyridin-2-yl)hydrazin-1-ylidene]ethyl}phenolato)tin(IV)
aFaculty of Resource Science and Technology, Universiti Malaysia Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia, and bDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
*Correspondence e-mail: edward.tiekink@gmail.com
Two independent molecules comprise the 4H9)(C13H12N3O)Cl2]. The Sn atom in each is coordinated by the tridentate ligand via the phenoxide O, hydrazine N and pyridyl N atoms, forming five- and six-membered chelate rings. The approximately octahedral coordination geometry is completed by the α-C atom of the n-butyl group (which is trans to the hydrazine N atom) and two mutually trans Cl atoms. Differences between the molecules are evident in the relative planarity of the chelate rings and in the conformations of the n-butyl groups [C—C—C—C = 177.2 (5) and −64.4 (11)°]. Significant differences in the Sn—Cl bond lengths are related to the formation of N—H⋯Cl hydrogen bonds, which link the molecules comprising the into dimeric aggregates. These are consolidated in the crystal packing by C—H⋯Cl contacts. The structure was refined as an the minor twin component is 37 (3)%.
of the title compound, [Sn(CRelated literature
For background to related organotin compounds, see: Affan et al. (2009). For background to the varied biological activities of organotin compounds, see: Gielen & Tiekink (2005). For additional structure analysis, see: Spek (2009).
Experimental
Crystal data
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Data collection: APEX2 (Bruker, 2008); cell SAINT (Bruker, 2008); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: PLATON (Spek, 2009) and publCIF (Westrip, 2010).
Supporting information
https://doi.org/10.1107/S1600536810040572/hb5679sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810040572/hb5679Isup2.hkl
2-Hydroxyacetophenone 2-pyridylhydrazone (0.45 g, 0.002 mol) was dissolved in hot absolute methanol (20 ml) in a Schlenk round bottom flask under an nitrogen atmosphere. Potassium hydroxide (0.11 g, 0.002 mol) dissolved in methanol (5 ml) was added drop wise to the solution, resulting in a colour change from yellow to orange. The resulting mixture was refluxed for 1 h and a solution of n-BuSnCl3 (0.56 g, 0.002 mol) in methanol (10 ml) was added drop wise to the refluxed solution. The resulting mixture was refluxed for 5 h and allowed to cool to room temperature. The precipitated KCl was removed via filtration. Then the filtrate was evaporated to dryness by using a rotary evaporator to obtain orange microcrystals. The orange microcrystals were filtered off, washed with cold methanol and dried overnight over P2O5 in vacuo. Single crystals of (I) were obtained by slow evaporation of its methanol solution at room temperature. Yield: 0.67 g, 60%. M.pt. 538–540 K.
Carbon-bound H-atoms were placed in calculated positions (C–H = 0.95 to 0.99 Å) and were included in the
in the riding model approximation, with Uiso(H) set to 1.2–1.5Uequiv(C). The N-bound H-atoms were located in a difference Fourier map and were refined with a distance restraint of N—H 0.86±0.01 Å, and with Uiso(H) = 1.2Ueq(N). The maximum and minimum residual electron density peaks of 2.28 and 1.21 e Å-3, respectively, were located 1.16 Å and 0.76 Å from the Sn2 and Cl3 atoms, respectively. The structure was refined as an The use of this gave the minor twin component as 37 (3)%.The title compound was examined in connection with synthetic studies of organotin(IV) compounds with pyruvic acid-2-pyridylhydrazone ligands (Affan et al., 2009), studies motivated by their putative biological activity (Gielen & Tiekink, 2005).
Two independent molecules comprise the
of (I), Figs 1 and 2. The Sn atom in each is coordinated by the tridentate ligand via the phenoxide-O, hydrazine-N and pyridyl-N atoms to form five- and six-membered chelate rings, Table 1. For the Sn1 atom, distortions of these rings from planarity [r.m.s. deviation from the five- and six-membered rings = 0.083 and 0.216 Å, respectively] are greater than the equivalent rings involving the Sn2 atom [r.m.s. = 0.042 and 0.109 Å, respectively]. The dihedral angle formed between the chelate rings = 8.9 (3) ° for Sn1, and 7.4 (3) ° for Sn2. Overall, the tridentate ligand deviates further from co-planarity for the Sn1 atom compared to the Sn2 atom as seen in the respective dihedral angles formed between the pyridyl and benzene rings of 23.3 (4) and 17.3 (4) °. The coordination geometry is completed by two chlorido atoms and the alpha-C atom of the n-butyl group. The chlorido atoms occupy mutually trans positions and the butyl-C atom is trans to the hydrazine-N atom. The resulting CCl2N2O donor set defines an approximate octahedron. A further difference between the independent molecules is found in the conformation of the n-butyl groups. This is reflected in the C1—C2—C3—C4 and C2—C3—C4—Sn1 torsion angles of 177.2 (5) and -71.1 (6) °, respectively, compared to the C18—C19—C20—C21 and C19—C20—C21—Sn2 angles of -64.4 (11) and -72.9 (9) °, respectively.As noted in Table 1, there are disparities in the Sn—Cl bond distances. This is directly related to the participation of the Cl2 and Cl4 atoms in N—H···Cl hydrogen bonding interactions, Table2, which connect the molecules comprising the
into dimeric aggregates. The latter are sustained in the crystal packing by C—H···Cl contacts, Fig. 3 and Table 2.For background to related organotin compounds, see: Affan et al. (2009). For background to the varied biological activities of organotin compounds, see: Gielen & Tiekink (2005). For additional structure analysis, see: Spek (2009).
Data collection: APEX2 (Bruker, 2008); cell
SAINT (Bruker, 2008); data reduction: SAINT (Bruker, 2008); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: PLATON (Spek, 2009) and publCIF (Westrip, 2010).[Sn(C4H9)(C13H12N3O)Cl2] | F(000) = 944 |
Mr = 472.96 | Dx = 1.714 Mg m−3 |
Monoclinic, Pc | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P -2yc | Cell parameters from 6860 reflections |
a = 8.9566 (6) Å | θ = 2.3–28.2° |
b = 21.0210 (13) Å | µ = 1.70 mm−1 |
c = 10.3974 (7) Å | T = 100 K |
β = 110.567 (1)° | Prism, orange |
V = 1832.8 (2) Å3 | 0.25 × 0.15 × 0.05 mm |
Z = 4 |
Bruker SMART APEX CCD diffractometer | 8239 independent reflections |
Radiation source: fine-focus sealed tube | 7357 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.032 |
ω scans | θmax = 27.5°, θmin = 1.0° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −11→11 |
Tmin = 0.677, Tmax = 0.920 | k = −26→27 |
17203 measured reflections | l = −13→13 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.042 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.108 | w = 1/[σ2(Fo2) + (0.0471P)2 + 7.3356P] where P = (Fo2 + 2Fc2)/3 |
S = 1.02 | (Δ/σ)max = 0.001 |
8239 reflections | Δρmax = 2.28 e Å−3 |
442 parameters | Δρmin = −1.21 e Å−3 |
4 restraints | Absolute structure: Flack (1983), 4006 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: 0.37 (3) |
[Sn(C4H9)(C13H12N3O)Cl2] | V = 1832.8 (2) Å3 |
Mr = 472.96 | Z = 4 |
Monoclinic, Pc | Mo Kα radiation |
a = 8.9566 (6) Å | µ = 1.70 mm−1 |
b = 21.0210 (13) Å | T = 100 K |
c = 10.3974 (7) Å | 0.25 × 0.15 × 0.05 mm |
β = 110.567 (1)° |
Bruker SMART APEX CCD diffractometer | 8239 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 7357 reflections with I > 2σ(I) |
Tmin = 0.677, Tmax = 0.920 | Rint = 0.032 |
17203 measured reflections |
R[F2 > 2σ(F2)] = 0.042 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.108 | Δρmax = 2.28 e Å−3 |
S = 1.02 | Δρmin = −1.21 e Å−3 |
8239 reflections | Absolute structure: Flack (1983), 4006 Friedel pairs |
442 parameters | Absolute structure parameter: 0.37 (3) |
4 restraints |
Geometry. All s.u.'s (except the s.u. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell s.u.'s are taken into account individually in the estimation of s.u.'s in distances, angles and torsion angles; correlations between s.u.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell s.u.'s is used for estimating s.u.'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 > 2σ(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 | ||
Sn1 | 0.49996 (4) | 0.90443 (2) | 0.50000 (3) | 0.01474 (11) | |
Sn2 | 0.43258 (4) | 0.59873 (2) | 0.81542 (4) | 0.01729 (12) | |
Cl1 | 0.2560 (2) | 0.92741 (8) | 0.30505 (18) | 0.0234 (4) | |
Cl2 | 0.71385 (18) | 0.85448 (8) | 0.70222 (17) | 0.0170 (3) | |
Cl3 | 0.6382 (3) | 0.59138 (10) | 1.0451 (2) | 0.0429 (6) | |
Cl4 | 0.2538 (2) | 0.63490 (9) | 0.58185 (19) | 0.0263 (4) | |
O1 | 0.6157 (6) | 0.8917 (2) | 0.3683 (5) | 0.0195 (10) | |
O2 | 0.2612 (7) | 0.6248 (3) | 0.8890 (6) | 0.0351 (14) | |
N1 | 0.4371 (7) | 0.8008 (3) | 0.4495 (7) | 0.0174 (13) | |
N2 | 0.3150 (8) | 0.7796 (3) | 0.4922 (7) | 0.0182 (13) | |
H2N | 0.289 (9) | 0.7402 (11) | 0.492 (8) | 0.022* | |
N3 | 0.3350 (8) | 0.8773 (3) | 0.6049 (6) | 0.0177 (13) | |
N4 | 0.5039 (7) | 0.7016 (3) | 0.8490 (7) | 0.0159 (12) | |
N5 | 0.6249 (8) | 0.7180 (3) | 0.7999 (7) | 0.0172 (13) | |
H5N | 0.607 (9) | 0.7568 (12) | 0.773 (7) | 0.021* | |
N6 | 0.6218 (8) | 0.6147 (3) | 0.7280 (8) | 0.0233 (14) | |
C1 | 0.9471 (7) | 1.0332 (3) | 0.4834 (6) | 0.0184 (13) | |
H1A | 1.0541 | 1.0145 | 0.5185 | 0.028* | |
H1B | 0.9545 | 1.0792 | 0.4993 | 0.028* | |
H1C | 0.8986 | 1.0247 | 0.3847 | 0.028* | |
C2 | 0.8449 (7) | 1.0038 (3) | 0.5573 (6) | 0.0138 (11) | |
H2A | 0.8947 | 1.0121 | 0.6571 | 0.017* | |
H2B | 0.8403 | 0.9572 | 0.5433 | 0.017* | |
C3 | 0.6756 (7) | 1.0307 (3) | 0.5055 (6) | 0.0146 (12) | |
H3A | 0.6813 | 1.0771 | 0.5233 | 0.018* | |
H3B | 0.6294 | 1.0245 | 0.4048 | 0.018* | |
C4 | 0.5633 (8) | 1.0012 (3) | 0.5702 (7) | 0.0170 (14) | |
H4A | 0.4652 | 1.0273 | 0.5465 | 0.020* | |
H4B | 0.6153 | 1.0014 | 0.6714 | 0.020* | |
C5 | 0.6916 (9) | 0.8399 (3) | 0.3502 (7) | 0.0185 (15) | |
C6 | 0.8343 (9) | 0.8498 (4) | 0.3249 (7) | 0.0221 (15) | |
H6 | 0.8745 | 0.8918 | 0.3275 | 0.027* | |
C7 | 0.9166 (9) | 0.7998 (4) | 0.2965 (7) | 0.0244 (15) | |
H7 | 1.0135 | 0.8077 | 0.2813 | 0.029* | |
C8 | 0.8605 (9) | 0.7386 (4) | 0.2896 (8) | 0.0272 (17) | |
H8 | 0.9174 | 0.7045 | 0.2684 | 0.033* | |
C9 | 0.7194 (9) | 0.7269 (3) | 0.3140 (7) | 0.0222 (15) | |
H9 | 0.6801 | 0.6847 | 0.3091 | 0.027* | |
C10 | 0.6336 (8) | 0.7781 (3) | 0.3465 (7) | 0.0150 (14) | |
C11 | 0.4906 (9) | 0.7603 (3) | 0.3786 (7) | 0.0164 (15) | |
C12 | 0.4144 (10) | 0.6970 (3) | 0.3391 (8) | 0.0225 (16) | |
H12A | 0.2983 | 0.7015 | 0.3095 | 0.034* | |
H12B | 0.4517 | 0.6682 | 0.4181 | 0.034* | |
H12C | 0.4431 | 0.6795 | 0.2635 | 0.034* | |
C13 | 0.2705 (9) | 0.8186 (4) | 0.5790 (8) | 0.0165 (14) | |
C14 | 0.1616 (10) | 0.7971 (4) | 0.6375 (8) | 0.0248 (17) | |
H14 | 0.1227 | 0.7547 | 0.6234 | 0.030* | |
C15 | 0.1121 (9) | 0.8383 (4) | 0.7152 (8) | 0.0252 (17) | |
H15 | 0.0328 | 0.8254 | 0.7509 | 0.030* | |
C16 | 0.1784 (10) | 0.9006 (4) | 0.7434 (9) | 0.0259 (18) | |
H16 | 0.1478 | 0.9293 | 0.8003 | 0.031* | |
C17 | 0.2872 (9) | 0.9172 (4) | 0.6856 (8) | 0.0224 (16) | |
H17 | 0.3320 | 0.9587 | 0.7024 | 0.027* | |
C18 | 0.0622 (13) | 0.4490 (6) | 0.7565 (13) | 0.069 (3) | |
H18A | −0.0502 | 0.4577 | 0.7416 | 0.103* | |
H18B | 0.1286 | 0.4637 | 0.8482 | 0.103* | |
H18C | 0.0772 | 0.4031 | 0.7492 | 0.103* | |
C19 | 0.1096 (11) | 0.4834 (4) | 0.6495 (10) | 0.045 (2) | |
H19A | 0.0931 | 0.5296 | 0.6574 | 0.054* | |
H19B | 0.0384 | 0.4697 | 0.5573 | 0.054* | |
C20 | 0.2852 (11) | 0.4721 (4) | 0.6612 (9) | 0.042 (2) | |
H20A | 0.3035 | 0.4259 | 0.6562 | 0.050* | |
H20B | 0.3038 | 0.4927 | 0.5825 | 0.050* | |
C21 | 0.4014 (9) | 0.4978 (3) | 0.7918 (9) | 0.0265 (18) | |
H21A | 0.5068 | 0.4789 | 0.8043 | 0.032* | |
H21B | 0.3693 | 0.4821 | 0.8680 | 0.032* | |
C22 | 0.2329 (10) | 0.6778 (4) | 0.9437 (8) | 0.0244 (17) | |
C23 | 0.0932 (10) | 0.6776 (4) | 0.9770 (8) | 0.0301 (18) | |
H23 | 0.0294 | 0.6403 | 0.9601 | 0.036* | |
C24 | 0.0472 (10) | 0.7291 (5) | 1.0322 (8) | 0.0325 (19) | |
H24 | −0.0489 | 0.7279 | 1.0515 | 0.039* | |
C25 | 0.1403 (11) | 0.7833 (4) | 1.0605 (8) | 0.0345 (19) | |
H25 | 0.1090 | 0.8190 | 1.1012 | 0.041* | |
C26 | 0.2780 (10) | 0.7861 (4) | 1.0302 (7) | 0.0266 (17) | |
H26 | 0.3400 | 0.8239 | 1.0503 | 0.032* | |
C27 | 0.3303 (9) | 0.7333 (3) | 0.9691 (8) | 0.0188 (15) | |
C28 | 0.4673 (10) | 0.7429 (4) | 0.9257 (7) | 0.0200 (16) | |
C29 | 0.5648 (9) | 0.8019 (3) | 0.9702 (8) | 0.0230 (16) | |
H29A | 0.6765 | 0.7925 | 0.9835 | 0.034* | |
H29B | 0.5572 | 0.8171 | 1.0568 | 0.034* | |
H29C | 0.5248 | 0.8348 | 0.8996 | 0.034* | |
C30 | 0.6775 (9) | 0.6730 (3) | 0.7290 (8) | 0.0186 (15) | |
C31 | 0.7888 (9) | 0.6884 (3) | 0.6693 (8) | 0.0174 (14) | |
H31 | 0.8311 | 0.7302 | 0.6753 | 0.021* | |
C32 | 0.8356 (9) | 0.6406 (4) | 0.6005 (8) | 0.0236 (16) | |
H32 | 0.9098 | 0.6496 | 0.5565 | 0.028* | |
C33 | 0.7758 (10) | 0.5798 (4) | 0.5953 (10) | 0.0321 (19) | |
H33 | 0.8093 | 0.5467 | 0.5493 | 0.039* | |
C34 | 0.6673 (9) | 0.5683 (4) | 0.6575 (9) | 0.0251 (17) | |
H34 | 0.6224 | 0.5269 | 0.6517 | 0.030* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Sn1 | 0.0153 (2) | 0.0133 (2) | 0.0172 (2) | 0.00001 (19) | 0.00764 (19) | 0.00070 (19) |
Sn2 | 0.0182 (2) | 0.0132 (2) | 0.0207 (2) | −0.00161 (19) | 0.0071 (2) | −0.00055 (19) |
Cl1 | 0.0231 (8) | 0.0194 (8) | 0.0223 (8) | 0.0007 (6) | 0.0014 (7) | 0.0046 (6) |
Cl2 | 0.0148 (7) | 0.0153 (7) | 0.0211 (7) | 0.0007 (6) | 0.0065 (6) | 0.0025 (6) |
Cl3 | 0.0488 (13) | 0.0265 (10) | 0.0326 (11) | −0.0111 (9) | −0.0119 (9) | 0.0101 (8) |
Cl4 | 0.0220 (8) | 0.0242 (9) | 0.0278 (9) | −0.0064 (7) | 0.0026 (7) | 0.0074 (7) |
O1 | 0.026 (3) | 0.013 (2) | 0.023 (2) | 0.0013 (19) | 0.014 (2) | −0.0039 (18) |
O2 | 0.038 (3) | 0.024 (3) | 0.056 (4) | −0.016 (3) | 0.033 (3) | −0.022 (3) |
N1 | 0.012 (3) | 0.023 (3) | 0.020 (3) | −0.002 (2) | 0.009 (2) | 0.001 (2) |
N2 | 0.016 (3) | 0.021 (3) | 0.021 (3) | −0.006 (2) | 0.011 (2) | 0.003 (2) |
N3 | 0.020 (3) | 0.020 (3) | 0.018 (3) | 0.004 (2) | 0.012 (2) | 0.003 (2) |
N4 | 0.013 (3) | 0.010 (3) | 0.024 (3) | 0.001 (2) | 0.005 (2) | 0.000 (2) |
N5 | 0.017 (3) | 0.013 (3) | 0.024 (3) | −0.003 (2) | 0.009 (3) | 0.002 (2) |
N6 | 0.012 (3) | 0.022 (3) | 0.033 (4) | −0.002 (2) | 0.003 (3) | −0.004 (3) |
C1 | 0.012 (3) | 0.024 (3) | 0.019 (3) | −0.007 (2) | 0.006 (2) | 0.004 (3) |
C2 | 0.017 (3) | 0.014 (3) | 0.011 (3) | −0.004 (2) | 0.005 (2) | 0.002 (2) |
C3 | 0.014 (3) | 0.010 (3) | 0.019 (3) | 0.000 (2) | 0.004 (2) | 0.005 (2) |
C4 | 0.015 (3) | 0.016 (3) | 0.018 (3) | 0.001 (3) | 0.004 (3) | −0.004 (3) |
C5 | 0.020 (3) | 0.019 (3) | 0.016 (3) | −0.004 (3) | 0.005 (3) | 0.000 (3) |
C6 | 0.016 (3) | 0.033 (4) | 0.019 (3) | −0.001 (3) | 0.008 (3) | −0.001 (3) |
C7 | 0.019 (3) | 0.038 (4) | 0.017 (3) | 0.004 (3) | 0.008 (3) | 0.001 (3) |
C8 | 0.023 (4) | 0.037 (5) | 0.029 (4) | 0.006 (3) | 0.017 (3) | −0.003 (3) |
C9 | 0.030 (4) | 0.016 (3) | 0.024 (4) | 0.005 (3) | 0.014 (3) | 0.001 (3) |
C10 | 0.014 (3) | 0.019 (3) | 0.013 (3) | 0.003 (3) | 0.005 (3) | −0.005 (2) |
C11 | 0.023 (4) | 0.012 (3) | 0.014 (3) | 0.000 (3) | 0.006 (3) | 0.000 (3) |
C12 | 0.029 (4) | 0.019 (3) | 0.019 (3) | −0.002 (3) | 0.007 (3) | −0.001 (3) |
C13 | 0.010 (3) | 0.023 (4) | 0.014 (3) | −0.001 (3) | 0.002 (3) | −0.002 (3) |
C14 | 0.024 (4) | 0.026 (4) | 0.024 (4) | −0.004 (3) | 0.009 (3) | 0.008 (3) |
C15 | 0.017 (3) | 0.034 (4) | 0.026 (4) | −0.004 (3) | 0.009 (3) | 0.008 (3) |
C16 | 0.021 (4) | 0.035 (5) | 0.024 (4) | 0.006 (3) | 0.012 (3) | −0.001 (3) |
C17 | 0.020 (4) | 0.026 (4) | 0.019 (3) | 0.002 (3) | 0.004 (3) | 0.004 (3) |
C18 | 0.044 (6) | 0.076 (8) | 0.069 (7) | 0.009 (6) | −0.002 (5) | 0.031 (6) |
C19 | 0.042 (5) | 0.025 (4) | 0.055 (5) | −0.002 (4) | 0.000 (4) | 0.005 (4) |
C20 | 0.045 (5) | 0.030 (4) | 0.043 (5) | 0.000 (4) | 0.006 (4) | 0.001 (4) |
C21 | 0.024 (4) | 0.014 (3) | 0.043 (5) | −0.003 (3) | 0.015 (4) | −0.012 (3) |
C22 | 0.027 (4) | 0.028 (4) | 0.019 (3) | −0.002 (3) | 0.010 (3) | −0.009 (3) |
C23 | 0.026 (4) | 0.047 (5) | 0.017 (3) | −0.006 (4) | 0.008 (3) | −0.006 (3) |
C24 | 0.030 (5) | 0.045 (5) | 0.023 (4) | 0.014 (4) | 0.009 (3) | −0.003 (4) |
C25 | 0.041 (5) | 0.039 (5) | 0.031 (4) | 0.016 (4) | 0.023 (4) | 0.009 (3) |
C26 | 0.035 (4) | 0.028 (4) | 0.021 (4) | 0.012 (3) | 0.014 (3) | 0.000 (3) |
C27 | 0.019 (4) | 0.017 (3) | 0.019 (3) | −0.001 (3) | 0.005 (3) | −0.005 (3) |
C28 | 0.026 (4) | 0.020 (4) | 0.011 (3) | −0.001 (3) | 0.003 (3) | 0.001 (3) |
C29 | 0.030 (4) | 0.015 (3) | 0.024 (4) | −0.005 (3) | 0.009 (3) | −0.003 (3) |
C30 | 0.019 (4) | 0.016 (3) | 0.018 (3) | 0.002 (3) | 0.003 (3) | 0.003 (3) |
C31 | 0.014 (3) | 0.009 (3) | 0.027 (4) | 0.001 (2) | 0.005 (3) | 0.004 (3) |
C32 | 0.015 (3) | 0.033 (4) | 0.026 (4) | −0.001 (3) | 0.011 (3) | 0.000 (3) |
C33 | 0.016 (4) | 0.037 (5) | 0.040 (5) | 0.007 (3) | 0.005 (3) | −0.010 (4) |
C34 | 0.019 (4) | 0.020 (4) | 0.041 (5) | 0.002 (3) | 0.016 (3) | −0.005 (3) |
Sn1—Cl1 | 2.4504 (17) | C10—C11 | 1.481 (10) |
Sn1—Cl2 | 2.5225 (16) | C11—C12 | 1.486 (10) |
Sn1—O1 | 2.004 (5) | C12—H12A | 0.9800 |
Sn1—N1 | 2.266 (6) | C12—H12B | 0.9800 |
Sn1—N3 | 2.198 (6) | C12—H12C | 0.9800 |
Sn1—C4 | 2.169 (7) | C13—C14 | 1.394 (10) |
Sn2—Cl3 | 2.456 (2) | C14—C15 | 1.359 (11) |
Sn2—Cl4 | 2.5116 (18) | C14—H14 | 0.9500 |
Sn2—O2 | 2.017 (5) | C15—C16 | 1.426 (11) |
Sn2—N4 | 2.248 (6) | C15—H15 | 0.9500 |
Sn2—N6 | 2.212 (7) | C16—C17 | 1.358 (11) |
Sn2—C21 | 2.142 (7) | C16—H16 | 0.9500 |
O1—C5 | 1.332 (9) | C17—H17 | 0.9500 |
O2—C22 | 1.314 (9) | C18—C19 | 1.508 (15) |
N1—C11 | 1.321 (9) | C18—H18A | 0.9800 |
N1—N2 | 1.390 (8) | C18—H18B | 0.9800 |
N2—C13 | 1.378 (10) | C18—H18C | 0.9800 |
N2—H2n | 0.86 (3) | C19—C20 | 1.553 (13) |
N3—C13 | 1.349 (10) | C19—H19A | 0.9900 |
N3—C17 | 1.358 (10) | C19—H19B | 0.9900 |
N4—C28 | 1.295 (10) | C20—C21 | 1.492 (11) |
N4—N5 | 1.394 (8) | C20—H20A | 0.9900 |
N5—C30 | 1.381 (10) | C20—H20B | 0.9900 |
N5—H5n | 0.86 (3) | C21—H21A | 0.9900 |
N6—C30 | 1.321 (10) | C21—H21B | 0.9900 |
N6—C34 | 1.366 (10) | C22—C23 | 1.410 (11) |
C1—C2 | 1.517 (8) | C22—C27 | 1.426 (11) |
C1—H1A | 0.9800 | C23—C24 | 1.356 (11) |
C1—H1B | 0.9800 | C23—H23 | 0.9500 |
C1—H1C | 0.9800 | C24—C25 | 1.382 (13) |
C2—C3 | 1.529 (8) | C24—H24 | 0.9500 |
C2—H2A | 0.9900 | C25—C26 | 1.378 (11) |
C2—H2B | 0.9900 | C25—H25 | 0.9500 |
C3—C4 | 1.524 (9) | C26—C27 | 1.437 (10) |
C3—H3A | 0.9900 | C26—H26 | 0.9500 |
C3—H3B | 0.9900 | C27—C28 | 1.462 (11) |
C4—H4A | 0.9900 | C28—C29 | 1.494 (10) |
C4—H4B | 0.9900 | C29—H29A | 0.9800 |
C5—C10 | 1.394 (10) | C29—H29B | 0.9800 |
C5—C6 | 1.408 (10) | C29—H29C | 0.9800 |
C6—C7 | 1.373 (10) | C30—C31 | 1.385 (11) |
C6—H6 | 0.9500 | C31—C32 | 1.381 (10) |
C7—C8 | 1.374 (11) | C31—H31 | 0.9500 |
C7—H7 | 0.9500 | C32—C33 | 1.379 (12) |
C8—C9 | 1.396 (10) | C32—H32 | 0.9500 |
C8—H8 | 0.9500 | C33—C34 | 1.366 (12) |
C9—C10 | 1.430 (9) | C33—H33 | 0.9500 |
C9—H9 | 0.9500 | C34—H34 | 0.9500 |
O1—Sn1—C4 | 102.6 (2) | C9—C10—C11 | 116.3 (6) |
O1—Sn1—N3 | 154.6 (2) | N1—C11—C10 | 118.4 (6) |
C4—Sn1—N3 | 102.6 (2) | N1—C11—C12 | 120.7 (7) |
O1—Sn1—N1 | 81.9 (2) | C10—C11—C12 | 120.9 (6) |
C4—Sn1—N1 | 174.0 (2) | C11—C12—H12A | 109.5 |
N3—Sn1—N1 | 73.1 (2) | C11—C12—H12B | 109.5 |
O1—Sn1—Cl1 | 89.21 (15) | H12A—C12—H12B | 109.5 |
C4—Sn1—Cl1 | 98.35 (19) | C11—C12—H12C | 109.5 |
N3—Sn1—Cl1 | 84.38 (18) | H12A—C12—H12C | 109.5 |
N1—Sn1—Cl1 | 85.49 (17) | H12B—C12—H12C | 109.5 |
O1—Sn1—Cl2 | 95.17 (15) | N3—C13—N2 | 118.2 (6) |
C4—Sn1—Cl2 | 94.46 (19) | N3—C13—C14 | 121.6 (7) |
N3—Sn1—Cl2 | 85.67 (17) | N2—C13—C14 | 120.1 (7) |
N1—Sn1—Cl2 | 81.18 (17) | C15—C14—C13 | 118.6 (7) |
Cl1—Sn1—Cl2 | 165.23 (6) | C15—C14—H14 | 120.7 |
O2—Sn2—C21 | 103.1 (3) | C13—C14—H14 | 120.7 |
O2—Sn2—N6 | 155.4 (2) | C14—C15—C16 | 120.5 (7) |
C21—Sn2—N6 | 101.0 (3) | C14—C15—H15 | 119.7 |
O2—Sn2—N4 | 83.8 (2) | C16—C15—H15 | 119.7 |
C21—Sn2—N4 | 171.6 (3) | C17—C16—C15 | 117.1 (7) |
N6—Sn2—N4 | 72.6 (2) | C17—C16—H16 | 121.4 |
O2—Sn2—Cl3 | 93.4 (2) | C15—C16—H16 | 121.4 |
C21—Sn2—Cl3 | 94.1 (2) | C16—C17—N3 | 123.1 (8) |
N6—Sn2—Cl3 | 89.3 (2) | C16—C17—H17 | 118.5 |
N4—Sn2—Cl3 | 80.46 (17) | N3—C17—H17 | 118.5 |
O2—Sn2—Cl4 | 88.4 (2) | C19—C18—H18A | 109.5 |
C21—Sn2—Cl4 | 100.1 (2) | C19—C18—H18B | 109.5 |
N6—Sn2—Cl4 | 82.92 (19) | H18A—C18—H18B | 109.5 |
N4—Sn2—Cl4 | 84.77 (17) | C19—C18—H18C | 109.5 |
Cl3—Sn2—Cl4 | 164.83 (6) | H18A—C18—H18C | 109.5 |
C5—O1—Sn1 | 128.2 (4) | H18B—C18—H18C | 109.5 |
C22—O2—Sn2 | 133.1 (5) | C18—C19—C20 | 114.1 (8) |
C11—N1—N2 | 116.9 (6) | C18—C19—H19A | 108.7 |
C11—N1—Sn1 | 129.7 (5) | C20—C19—H19A | 108.7 |
N2—N1—Sn1 | 113.2 (4) | C18—C19—H19B | 108.7 |
C13—N2—N1 | 117.4 (6) | C20—C19—H19B | 108.7 |
C13—N2—H2N | 115 (5) | H19A—C19—H19B | 107.6 |
N1—N2—H2N | 124 (5) | C21—C20—C19 | 112.3 (8) |
C13—N3—C17 | 118.9 (6) | C21—C20—H20A | 109.2 |
C13—N3—Sn1 | 117.0 (5) | C19—C20—H20A | 109.2 |
C17—N3—Sn1 | 124.0 (5) | C21—C20—H20B | 109.2 |
C28—N4—N5 | 117.2 (6) | C19—C20—H20B | 109.2 |
C28—N4—Sn2 | 128.3 (5) | H20A—C20—H20B | 107.9 |
N5—N4—Sn2 | 113.3 (4) | C20—C21—Sn2 | 119.0 (6) |
C30—N5—N4 | 118.8 (6) | C20—C21—H21A | 107.6 |
C30—N5—H5N | 123 (5) | Sn2—C21—H21A | 107.6 |
N4—N5—H5N | 106 (5) | C20—C21—H21B | 107.6 |
C30—N6—C34 | 118.9 (7) | Sn2—C21—H21B | 107.6 |
C30—N6—Sn2 | 118.7 (5) | H21A—C21—H21B | 107.0 |
C34—N6—Sn2 | 121.8 (5) | O2—C22—C23 | 115.3 (7) |
C2—C1—H1A | 109.5 | O2—C22—C27 | 125.1 (7) |
C2—C1—H1B | 109.5 | C23—C22—C27 | 119.6 (7) |
H1A—C1—H1B | 109.5 | C24—C23—C22 | 122.0 (8) |
C2—C1—H1C | 109.5 | C24—C23—H23 | 119.0 |
H1A—C1—H1C | 109.5 | C22—C23—H23 | 119.0 |
H1B—C1—H1C | 109.5 | C23—C24—C25 | 119.9 (8) |
C1—C2—C3 | 111.8 (5) | C23—C24—H24 | 120.0 |
C1—C2—H2A | 109.2 | C25—C24—H24 | 120.0 |
C3—C2—H2A | 109.2 | C24—C25—C26 | 120.5 (8) |
C1—C2—H2B | 109.2 | C24—C25—H25 | 119.8 |
C3—C2—H2B | 109.2 | C26—C25—H25 | 119.7 |
H2A—C2—H2B | 107.9 | C25—C26—C27 | 121.8 (8) |
C4—C3—C2 | 114.9 (5) | C25—C26—H26 | 119.1 |
C4—C3—H3A | 108.5 | C27—C26—H26 | 119.1 |
C2—C3—H3A | 108.5 | C22—C27—C26 | 116.2 (7) |
C4—C3—H3B | 108.5 | C22—C27—C28 | 125.5 (7) |
C2—C3—H3B | 108.5 | C26—C27—C28 | 118.0 (7) |
H3A—C3—H3B | 107.5 | N4—C28—C27 | 121.3 (7) |
C3—C4—Sn1 | 111.6 (4) | N4—C28—C29 | 120.0 (7) |
C3—C4—H4A | 109.3 | C27—C28—C29 | 118.7 (6) |
Sn1—C4—H4A | 109.3 | C28—C29—H29A | 109.5 |
C3—C4—H4B | 109.3 | C28—C29—H29B | 109.5 |
Sn1—C4—H4B | 109.3 | H29A—C29—H29B | 109.5 |
H4A—C4—H4B | 108.0 | C28—C29—H29C | 109.5 |
O1—C5—C10 | 124.1 (6) | H29A—C29—H29C | 109.5 |
O1—C5—C6 | 116.7 (6) | H29B—C29—H29C | 109.5 |
C10—C5—C6 | 119.1 (7) | N6—C30—N5 | 116.2 (7) |
C7—C6—C5 | 121.3 (7) | N6—C30—C31 | 122.9 (7) |
C7—C6—H6 | 119.4 | N5—C30—C31 | 120.9 (7) |
C5—C6—H6 | 119.4 | C32—C31—C30 | 117.3 (7) |
C6—C7—C8 | 120.9 (7) | C32—C31—H31 | 121.4 |
C6—C7—H7 | 119.6 | C30—C31—H31 | 121.4 |
C8—C7—H7 | 119.6 | C33—C32—C31 | 120.7 (7) |
C7—C8—C9 | 119.5 (7) | C33—C32—H32 | 119.6 |
C7—C8—H8 | 120.2 | C31—C32—H32 | 119.6 |
C9—C8—H8 | 120.2 | C34—C33—C32 | 118.5 (8) |
C8—C9—C10 | 120.5 (7) | C34—C33—H33 | 120.8 |
C8—C9—H9 | 119.8 | C32—C33—H33 | 120.8 |
C10—C9—H9 | 119.8 | N6—C34—C33 | 121.5 (8) |
C5—C10—C9 | 118.8 (7) | N6—C34—H34 | 119.2 |
C5—C10—C11 | 124.9 (6) | C33—C34—H34 | 119.2 |
C4—Sn1—O1—C5 | 140.7 (6) | C6—C5—C10—C11 | 176.4 (7) |
N3—Sn1—O1—C5 | −45.8 (9) | C8—C9—C10—C5 | 1.4 (11) |
N1—Sn1—O1—C5 | −35.4 (6) | C8—C9—C10—C11 | −176.5 (7) |
Cl1—Sn1—O1—C5 | −120.9 (6) | N2—N1—C11—C10 | −172.5 (6) |
Cl2—Sn1—O1—C5 | 44.9 (6) | Sn1—N1—C11—C10 | 13.2 (10) |
C21—Sn2—O2—C22 | 167.9 (8) | N2—N1—C11—C12 | 4.1 (10) |
N6—Sn2—O2—C22 | −22.9 (12) | Sn1—N1—C11—C12 | −170.3 (5) |
N4—Sn2—O2—C22 | −7.1 (8) | C5—C10—C11—N1 | −18.9 (11) |
Cl3—Sn2—O2—C22 | 72.9 (8) | C9—C10—C11—N1 | 158.9 (7) |
Cl4—Sn2—O2—C22 | −92.0 (8) | C5—C10—C11—C12 | 164.6 (7) |
O1—Sn1—N1—C11 | 8.3 (6) | C9—C10—C11—C12 | −17.6 (10) |
N3—Sn1—N1—C11 | −176.4 (7) | C17—N3—C13—N2 | 177.3 (7) |
Cl1—Sn1—N1—C11 | 98.1 (7) | Sn1—N3—C13—N2 | 1.5 (9) |
Cl2—Sn1—N1—C11 | −88.3 (7) | C17—N3—C13—C14 | −2.7 (11) |
O1—Sn1—N1—N2 | −166.3 (5) | Sn1—N3—C13—C14 | −178.4 (6) |
Cl1—Sn1—N1—N2 | −76.4 (5) | N1—N2—C13—N3 | 7.2 (10) |
Cl2—Sn1—N1—N2 | 97.2 (5) | N1—N2—C13—C14 | −172.9 (7) |
C11—N1—N2—C13 | 172.9 (7) | N3—C13—C14—C15 | 4.3 (12) |
Sn1—N1—N2—C13 | −11.8 (8) | N2—C13—C14—C15 | −175.6 (7) |
C4—Sn1—N3—C13 | 178.6 (5) | C13—C14—C15—C16 | −4.1 (12) |
N1—Sn1—N3—C13 | −5.7 (5) | C14—C15—C16—C17 | 2.3 (12) |
Cl1—Sn1—N3—C13 | 81.3 (5) | C15—C16—C17—N3 | −0.6 (12) |
Cl2—Sn1—N3—C13 | −87.8 (5) | C13—N3—C17—C16 | 0.8 (11) |
O1—Sn1—N3—C17 | −170.4 (5) | Sn1—N3—C17—C16 | 176.3 (6) |
C4—Sn1—N3—C17 | 3.1 (6) | C18—C19—C20—C21 | −64.4 (11) |
N1—Sn1—N3—C17 | 178.8 (6) | C19—C20—C21—Sn2 | −72.9 (9) |
Cl1—Sn1—N3—C17 | −94.3 (6) | O2—Sn2—C21—C20 | 86.9 (7) |
Cl2—Sn1—N3—C17 | 96.7 (6) | N6—Sn2—C21—C20 | −88.5 (7) |
O2—Sn2—N4—C28 | 18.6 (7) | Cl3—Sn2—C21—C20 | −178.7 (6) |
N6—Sn2—N4—C28 | −168.2 (7) | Cl4—Sn2—C21—C20 | −3.9 (7) |
Cl3—Sn2—N4—C28 | −75.9 (7) | Sn2—O2—C22—C23 | 177.2 (6) |
Cl4—Sn2—N4—C28 | 107.6 (7) | Sn2—O2—C22—C27 | −2.2 (13) |
O2—Sn2—N4—N5 | −174.0 (5) | O2—C22—C23—C24 | −179.1 (8) |
N6—Sn2—N4—N5 | −0.8 (5) | C27—C22—C23—C24 | 0.4 (12) |
Cl3—Sn2—N4—N5 | 91.5 (5) | C22—C23—C24—C25 | −1.5 (13) |
Cl4—Sn2—N4—N5 | −85.0 (5) | C23—C24—C25—C26 | 1.4 (12) |
C28—N4—N5—C30 | 173.8 (7) | C24—C25—C26—C27 | −0.2 (12) |
Sn2—N4—N5—C30 | 4.9 (8) | O2—C22—C27—C26 | −179.8 (7) |
O2—Sn2—N6—C30 | 13.0 (11) | C23—C22—C27—C26 | 0.8 (11) |
C21—Sn2—N6—C30 | −177.8 (6) | O2—C22—C27—C28 | 6.9 (13) |
N4—Sn2—N6—C30 | −3.5 (6) | C23—C22—C27—C28 | −172.5 (8) |
Cl3—Sn2—N6—C30 | −83.7 (6) | C25—C26—C27—C22 | −0.9 (11) |
Cl4—Sn2—N6—C30 | 83.2 (6) | C25—C26—C27—C28 | 173.0 (7) |
O2—Sn2—N6—C34 | −158.4 (6) | N5—N4—C28—C27 | 172.9 (7) |
C21—Sn2—N6—C34 | 10.9 (7) | Sn2—N4—C28—C27 | −20.1 (11) |
N4—Sn2—N6—C34 | −174.8 (7) | N5—N4—C28—C29 | −6.5 (10) |
Cl3—Sn2—N6—C34 | 105.0 (6) | Sn2—N4—C28—C29 | 160.5 (5) |
Cl4—Sn2—N6—C34 | −88.1 (6) | C22—C27—C28—N4 | 5.4 (12) |
C1—C2—C3—C4 | 177.2 (5) | C26—C27—C28—N4 | −167.8 (7) |
C2—C3—C4—Sn1 | −71.1 (6) | C22—C27—C28—C29 | −175.2 (7) |
O1—Sn1—C4—C3 | −1.2 (5) | C26—C27—C28—C29 | 11.5 (11) |
N3—Sn1—C4—C3 | −178.3 (4) | C34—N6—C30—N5 | 178.9 (7) |
Cl1—Sn1—C4—C3 | −92.2 (4) | Sn2—N6—C30—N5 | 7.3 (9) |
Cl2—Sn1—C4—C3 | 95.1 (4) | C34—N6—C30—C31 | −4.4 (12) |
Sn1—O1—C5—C10 | 42.3 (10) | Sn2—N6—C30—C31 | −175.9 (6) |
Sn1—O1—C5—C6 | −141.8 (5) | N4—N5—C30—N6 | −8.1 (10) |
O1—C5—C6—C7 | −176.0 (6) | N4—N5—C30—C31 | 175.1 (7) |
C10—C5—C6—C7 | 0.1 (11) | N6—C30—C31—C32 | 3.2 (12) |
C5—C6—C7—C8 | 1.1 (11) | N5—C30—C31—C32 | 179.8 (7) |
C6—C7—C8—C9 | −1.0 (12) | C30—C31—C32—C33 | −1.5 (12) |
C7—C8—C9—C10 | −0.2 (11) | C31—C32—C33—C34 | 1.1 (13) |
O1—C5—C10—C9 | 174.5 (7) | C30—N6—C34—C33 | 3.9 (12) |
C6—C5—C10—C9 | −1.3 (10) | Sn2—N6—C34—C33 | 175.2 (6) |
O1—C5—C10—C11 | −7.8 (11) | C32—C33—C34—N6 | −2.2 (13) |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2n···Cl4 | 0.86 (3) | 2.47 (4) | 3.283 (7) | 159 (7) |
N5—H5n···Cl2 | 0.86 (3) | 2.48 (5) | 3.235 (7) | 147 (7) |
C15—H15···Cl2i | 0.95 | 2.79 | 3.538 (9) | 137 |
C17—H17···Cl1ii | 0.95 | 2.80 | 3.540 (9) | 135 |
C34—H34···Cl3iii | 0.95 | 2.75 | 3.534 (9) | 141 |
Symmetry codes: (i) x−1, y, z; (ii) x, −y+2, z+1/2; (iii) x, −y+1, z−1/2. |
Experimental details
Crystal data | |
Chemical formula | [Sn(C4H9)(C13H12N3O)Cl2] |
Mr | 472.96 |
Crystal system, space group | Monoclinic, Pc |
Temperature (K) | 100 |
a, b, c (Å) | 8.9566 (6), 21.0210 (13), 10.3974 (7) |
β (°) | 110.567 (1) |
V (Å3) | 1832.8 (2) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 1.70 |
Crystal size (mm) | 0.25 × 0.15 × 0.05 |
Data collection | |
Diffractometer | Bruker SMART APEX CCD |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.677, 0.920 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 17203, 8239, 7357 |
Rint | 0.032 |
(sin θ/λ)max (Å−1) | 0.650 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.042, 0.108, 1.02 |
No. of reflections | 8239 |
No. of parameters | 442 |
No. of restraints | 4 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 2.28, −1.21 |
Absolute structure | Flack (1983), 4006 Friedel pairs |
Absolute structure parameter | 0.37 (3) |
Computer programs: APEX2 (Bruker, 2008), SAINT (Bruker, 2008), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 2006), PLATON (Spek, 2009) and publCIF (Westrip, 2010).
Sn1—Cl1 | 2.4504 (17) | Sn2—Cl3 | 2.456 (2) |
Sn1—Cl2 | 2.5225 (16) | Sn2—Cl4 | 2.5116 (18) |
Sn1—O1 | 2.004 (5) | Sn2—O2 | 2.017 (5) |
Sn1—N1 | 2.266 (6) | Sn2—N4 | 2.248 (6) |
Sn1—N3 | 2.198 (6) | Sn2—N6 | 2.212 (7) |
Sn1—C4 | 2.169 (7) | Sn2—C21 | 2.142 (7) |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2n···Cl4 | 0.86 (3) | 2.47 (4) | 3.283 (7) | 159 (7) |
N5—H5n···Cl2 | 0.86 (3) | 2.48 (5) | 3.235 (7) | 147 (7) |
C15—H15···Cl2i | 0.95 | 2.79 | 3.538 (9) | 137 |
C17—H17···Cl1ii | 0.95 | 2.80 | 3.540 (9) | 135 |
C34—H34···Cl3iii | 0.95 | 2.75 | 3.534 (9) | 141 |
Symmetry codes: (i) x−1, y, z; (ii) x, −y+2, z+1/2; (iii) x, −y+1, z−1/2. |
Footnotes
‡Additional correspondence author, e-mail: maaffan@frst.unimas.my.
Acknowledgements
The authors express their gratitude to the Ministry of Science, Technology and Innovation (MOSTI) for a research grant (No. 06–01-09-SF0046), and to Universiti Malaysia Sarawak (UNIMAS) for financial support. The authors also thank the University of Malaya for support of the crystallographic facility.
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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.
The title compound was examined in connection with synthetic studies of organotin(IV) compounds with pyruvic acid-2-pyridylhydrazone ligands (Affan et al., 2009), studies motivated by their putative biological activity (Gielen & Tiekink, 2005).
Two independent molecules comprise the asymmetric unit of (I), Figs 1 and 2. The Sn atom in each is coordinated by the tridentate ligand via the phenoxide-O, hydrazine-N and pyridyl-N atoms to form five- and six-membered chelate rings, Table 1. For the Sn1 atom, distortions of these rings from planarity [r.m.s. deviation from the five- and six-membered rings = 0.083 and 0.216 Å, respectively] are greater than the equivalent rings involving the Sn2 atom [r.m.s. = 0.042 and 0.109 Å, respectively]. The dihedral angle formed between the chelate rings = 8.9 (3) ° for Sn1, and 7.4 (3) ° for Sn2. Overall, the tridentate ligand deviates further from co-planarity for the Sn1 atom compared to the Sn2 atom as seen in the respective dihedral angles formed between the pyridyl and benzene rings of 23.3 (4) and 17.3 (4) °. The coordination geometry is completed by two chlorido atoms and the alpha-C atom of the n-butyl group. The chlorido atoms occupy mutually trans positions and the butyl-C atom is trans to the hydrazine-N atom. The resulting CCl2N2O donor set defines an approximate octahedron. A further difference between the independent molecules is found in the conformation of the n-butyl groups. This is reflected in the C1—C2—C3—C4 and C2—C3—C4—Sn1 torsion angles of 177.2 (5) and -71.1 (6) °, respectively, compared to the C18—C19—C20—C21 and C19—C20—C21—Sn2 angles of -64.4 (11) and -72.9 (9) °, respectively.
As noted in Table 1, there are disparities in the Sn—Cl bond distances. This is directly related to the participation of the Cl2 and Cl4 atoms in N—H···Cl hydrogen bonding interactions, Table2, which connect the molecules comprising the asymmetric unit into dimeric aggregates. The latter are sustained in the crystal packing by C—H···Cl contacts, Fig. 3 and Table 2.