Copyright © Yap et al. 2008
aDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
Correspondence e-mail: seikweng/at/um.edu.my
Received April 7, 2008; Accepted April 18, 2008.
This is an open-access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
The SnIV atom of the stannate anion in the title salt, (C7H11N2)2[SnBr4(C6H5)2], lies on a center of inversion in a tetragonally compressed octahedron. The two independent Br atoms in the anion are hydrogen-bond acceptors for the same cation.
Data collection: APEX2 (Bruker, 2007 ); cell refinement: SAINT (Bruker, 2007 ); data reduction: SAINT; 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, 2008 ).
We thank the University of Malaya for funding this study (SF022155/2007 A) and also for the purchase of the diffractometer.
supplementary crystallographic information
Cyclopentyltriphenyltin (1.36 g, 3 mmol) and 4-dimethylaminopyridine hydrobromide perbromide (1.1 g, 3 mmol) were heated in chloroform (100 ml) for 3 h. The filtered solution when allowed to evaporate yielded large yellow crystals, m.p. 470–473 K.
Carbon-bound H-atoms were placed in calculated positions (C—H 0.95 to 0.98 Å) and were included in the refinement in the riding model approximation, with U(H) set to 1.2 to 1.5Ueq(C). The ammonium H atom was refined with a distance restraint of N–H 0.88±0.01 Å; its displacement parameter was freely refined.
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2)
Atomic displacement parameters (Å2)
Geometric parameters (Å, °)
Symmetry codes: (i) −x+1, −y+1, −z+1.
Your browsing activity is empty.
Activity recording is turned off.