Phenyltin trichloroacetate complexes: preparations and structures

Abstract

Six phenyltin trichloroacetate complexes have been synthesised and their structures established by X-ray crystallography. The complex SnPh₃(O₂CCCl₃)·MeOH (1)(R= 0.0296 for 1 770 unique observed reflections) is a five-co-ordinate monomer. Complexes (2) and (4) are isomers of {[SnPh₂(O₂CCCl₃)]₂O}₂(R= 0.0918 for 3 185 reflections and R= 0.0379 for 3 132 reflections respectively). They are centrosymmetric dimers respectively with all their carboxylate groups bridging, and with half of them unidentate. The complex Sn₆Ph₆(O₂CCCl₃)₁₀O₄·2C₆H₆(3)(R= 0.0521 for 2 556 reflections) is a linear hexatin compound containing three (Sn–O)₂ stannoxane rings. Complex (6) is also a hexatin compound [SnPh(O₂CCCl₃)O]₆·3C₆H₆(R= 0.0296 for 1 921 reflections) with a drum structure. The complex Sn₄Ph₈(O₂CCCl₃)₆(OH)₂(5)(R= 0.0454 for 3 111 reflections) is a novel linear chain connected by hydroxy and acetate bridges. Compounds (2)–(4) and (6) were all formed by dearylation reactions starting from di- and tri-phenyl tin compounds.