Triphenyltin(IV) compounds with biologically-active anionic groups: crystal and molecular structures of the p-ethoxybenzoic acid, acetylsalicylic acid, phthalic acid and salicylaldehyde derivatives

Triphenyltin(IV) compounds of p-ethoxybenzoic acid and acetylsalicylic acid contain molecular units with Sn-O bonds and distorted tetrahedral tin centers, The phthalic acid derivative contains two four-coordinate tin atoms between which the phthalic acid unit effectively forms a bridge, The salicy-laldehydato compound is polymeric with trigonal bipyramidal tin centers in which the phenyl groups take equatorial positions. The polymerization occurs via the aldehyde oxygen atom bonding to a neighboring tin atom. (C) 1998 John Wiley & Sons, Ltd.