W. Harrison, R. Howie, M. Jaspars
Nov 15, 2003
Citations
0
Influential Citations
4
Citations
Journal
Polyhedron
Abstract
Abstract The crystal structures of bis[2-(bromodimethylstannyl)ethyl]phenylphosphine oxide 3 (X=Br), and t -butyl[3-(iododimethylstannyl)propyl]phenylphosphine oxide 7 (X=I), have been determined. Compound 7 (X=I), grown from EtOH solution, is a chelated complex as a consequence of an intramolecular Sn–O interaction and hence contrasts with the previously reported [3-(iododimethylstannyl)propyl]diphenylphosphine oxide, grown from alcohol media solution, which has an intermolecular Sn–O linked chain structure. Molecules of 7 (X=I) are linked into double chains via C–H–I and C–H–π interactions. Compound 3 (X=Br), isostructural with previously reported 3 (X=Cl) obtained from CH 2 Cl 2 solution, contains two distinct trigonal bipyramidal tin centres. One Sn centre is intramolecularly bound to the O, i.e., one PhP(O)CH 2 CH 2 fragment is acting as a C,O-chelating unit, while the other Sn centre is weakly bonded to a Br ligand from another molecule to set up zig zag chains of molecules. Intermolecular interactions, C–H–Br and C–H–π, create a double layer of molecules. Detailed 1 H NMR spectra of 3 are reported.