[μ-1,2,3,4-Tetra­kis(pyridin-4-yl)butane-κ2N1:N4]bis­[trimeth­yl(thio­cyanato-κN)tin(IV)]

Najafi, E.; Amini, M.M.; Ng, S.W.

doi:10.1107/S160053681204737X

Volume 68
Part 12
Page m1550
December 2012

Received 17 November 2012
Accepted 18 November 2012
Online 28 November 2012

Key indicators
Single-crystal X-ray study
T = 295 K
Mean (C-C) = 0.004 Å
R = 0.031
wR = 0.076
Data-to-parameter ratio = 21.9
Details

[-1,2,3,4-Tetrakis(pyridin-4-yl)butane-²N¹:N⁴]bis[trimethyl(thiocyanato-N)tin(IV)]

Ezzatollah Najafi,^a Mostafa M. Amini ^a and Seik Weng Ng ^b,^c ^*

^aDepartment of Chemistry, General Campus, Shahid Beheshti University, Tehran 1983963113, Iran,^bDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia, and ^cChemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203 Jeddah, Saudi Arabia
Correspondence e-mail: seikweng@um.edu.my

In the title compound, [Sn₂(CH₃)₆(NCS)₂(C₂₄H₂₂N₄)], the 1,2,3,4-tetrakis(pyridin-4-yl)butane ligand uses the pyridine N atoms at the ends of the butyl chain to coordinate to two trimethylthiocyanatotin(IV) units, forming a dinuclear structure. The Sn^IV atom in the molecule shows a distorted trans-trigonal-bipyramidal coordination with the methyl groups in equatorial positions. The molecule lies on a center of inversion, with the mid-point of the butyl chain coinciding with this symmetry element. In the crystal, weak C-H [pi] interactions occur between pyridine rings of adjacent molecules.

Related literature

For trimethyltin(IV) thiocyanate, see: Forder & Sheldrick (1970).

Experimental

Crystal data

[Sn₂(CH₃)₆(NCS)₂(C₂₄H₂₂N₄)]
M_r = 810.20
Triclinic, $[P \overline 1]$
a = 9.2959 (8) Å
b = 9.7210 (7) Å
c = 10.2448 (9) Å
= 90.388 (7)°
= 94.381 (7)°
= 103.646 (7)°
V = 896.72 (13) Å³
Z = 1
Mo K radiation
= 1.54 mm^-1
T = 295 K
0.25 × 0.25 × 0.05 mm

Data collection

Agilent SuperNova Dual diffractometer with an Atlas detector
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2012) T_min = 0.700, T_max = 0.927
8527 measured reflections
4153 independent reflections
3645 reflections with I > 2(I)
R_int = 0.030

Refinement

R[F² > 2(F²)] = 0.031
wR(F²) = 0.076
S = 1.05
4153 reflections
190 parameters
H-atom parameters constrained
_max = 0.50 e Å^-3
_min = -0.52 e Å^-3

Table 1
Hydrogen-bond geometry (Å, °)

Cg is the centroid of the N2-pyridine ring.

D-HA	D-H	HA	DA	D-HA
C14-H14Cgⁱ	0.93	2.79	3.631 (4)	151
Symmetry code: (i) -x+1, -y, -z.

Data collection: CrysAlis PRO (Agilent, 2012); cell refinement: CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: X-SEED (Barbour, 2001); software used to prepare material for publication: publCIF (Westrip, 2010).

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: XU5652 ).

Acknowledgements

The authors thank Shahid Beheshti University and the Ministry of Higher Education of Malaysia (grant No. UM.C/HIR/MOHE/SC/12) for supporting this study.

References

Agilent (2012). CrysAlis PRO. Agilent Technologies, Yarnton, Oxfordshire, England.
Barbour, L. J. (2001). J. Supramol. Chem. 1, 189-191.
Forder, R. A. & Sheldrick, G. M. (1970). J. Organomet. Chem. 21, 115-120.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Westrip, S. P. (2010). J. Appl. Cryst. 43, 920-925.

metal-organic compounds

[-1,2,3,4-Tetrakis(pyridin-4-yl)butane-2N1:N4]bis[trimethyl(thiocyanato-N)tin(IV)]