Dibromidobis(3-bromobenzyl-κC)(4,7-diphenyl-1,10-phenanthroline-κ2 N,N′)tin(IV)

C Bhaskar,T Mohandas,Ray J Butcher,S Chandrasekar

doi:10.1107/s2414314619003365

Abstract

In the title compound, [SnBr2(C7H6Br)2(C24H16N2)], the Sn atom is coordinated to a 4,7-diphenyl-1,10-phenanthroline, two 3-bromobenzyl and two bromide ligands, leading to a six-coordinate C2Br2N2 donor set. The bromobenzyl ligands are trans to each other, while the Br anions are in a cis arrangement. One of the two 3-bromobenzyl ligands is disordered over two similar conformations, with occupancies of 0.7078 (18) and 0.2922 (18). In the crystal, molecules are linked into centrosymmetric dimers by Br...Br halogen bonds [3.5972 (12) Å], which are linked into a supramolecular layer in the ac plane by weak intermolecular C—H...Br interactions.

Highlights

In the title compound, [SnBr2(C7H6Br)2(C24H16N2)], the Sn atom is coordinated to a 4,7-diphenyl-1,10-phenanthroline, two 3-bromobenzyl and two bromide ligands, leading to a six-coordinate C2Br2N2 donor set
The bromobenzyl ligands are trans to each other, while the Br anions are in a cis arrangement
One of the two 3-bromobenzyl ligands is disordered over two similar conformations, with occupancies of 0.7078 (18) and 0.2922 (18)

Summary

DÁ Á ÁA

In (I), the Sn atom is coordinated by a 4,7-diphenyl-1,10phenanthroline, two 3-bromobenzyl and two bromide ligands, leading to a six-coordinate C2Br2N2 donor set (see Fig. 1). One of the interesting aspects of the structure is the conformation adopted by the 3-bromobenzyl ligands As indicated above, these are arranged in a trans fashion in the Sn coordination sphere. These are arranged in a trans fashion in the Sn coordination sphere They are not arranged in the normal way to minimize steric repulsion, but rather are both tilted away from the SnN2Br2 plane, with a dihedral angle of 40.1 (2) between them. The reason for this appears to be so that they can form intramolecular – interactions with the central phenanthroline moiety [CgÁ Á ÁCg = 3.584 (2) and 3.694 (3) A ]. [SnBr2(C7H6Br)2(C24H16N2)] 950.95 Triclinic, P1 296 10.1328 (3), 11.2430 (3), 16.7726 (4) 83.216 (2), 72.639 (2), 71.787 (1) 1731.72 (8) 2 Mo K 5.38 0.10 Â 0.10 Â 0.05

No of restraints

Synthesis and crystallization

Data collection

Special details