Syntheses and structures of dichloropalladium(II)(dithia[3.3]metadipyridinophane) and dichloroplatinum(II)(dithia[3.3]metadipyridinophane) complexes

Dithia[3.3]metadipyridinophane was prepared as a neutral cyclophane type li gand and its structural properties were investigated. Complexation of the l igand with bis(benzonitrile)palladium(II) dichloride or bis(benzonitrile)pl atinum(II) dichloride gave dichloropalladium(II)(dithia[3.3]dipyridinophane ) and dichloroplatinum(II)(dithia[3.3]dipyridinophane) complexes, respectiv ely. The X-ray crystal structure of dichloropalladium(Il)(dithia[3.3]dipyri dinophane) revealed a planar four-coordinate configuration with two chlorid e anions and two N atoms of dithia[3.3]dipyridinophane. Dichloroplatinum(II )(dithia[3.3]dipyridinophane) was also found to form a planar four-coordina te complex surrounded by two N atoms of dithia[3.3]dipyridinophane and two chloride anions. Both crystals include one dichloromethane molecule as solv ent of crystallization. (C) 2001 Elsevier Science Ltd. All rights reserved.