The structure and dynamics of Cl-substituted tetraphenyl- and tetrabenzyl-tin(IV)

The crystal and molecular structure of (o-ClC6H4CH2),Sn has been determined by X-ray crystallography. Tin is in a slightly distorted environment. The molecular dynamics of (p-ClC6H4)(4)Sn, (o-ClC6H4)(4)Sn and (o-ClC6H4CH2)(4) Sn have been investigated by variable temperature Sn-119 Mossbauer spectros copy (VTMS). A Debye-solid behaviour has been detected for (p-ClC6H4)(4)Sn, where, on the other hand, no influence by hydrogen-chlorine interaction on the magnitude of the dynamics data and functions seems to occur. For the o -Cl-substituted derivatives, a non-Debye-solid character could be advanced. (C) 1999 Elsevier Science S.A. All rights reserved.