The binding of neutral platinum complexes by crown ethers. X-Ray crystal structures of [trans-PtCl2(PMe3)NH3˙dibenzo-18-crown-6] and [{trans-PtCl2(PMe3)NH3}2·18-crown-6]

Abstract

Complexes of the type trans-PtCl₂(L)NH₃ where L = PMe₃(1), PEt₃(2), and NH₃(3) co-ordinate to 18-crown-6 (18C6) and dibenzo-18-crown-6 (DBI8C6) by hydrogen bonding of their NH₃ ligands, forming the crystalline adducts [(1)–DBI8C6], [(2)–DBI8C6], [(1)₂–18C6], [(2)₂–18C6], and [(3)–18C6]_n which also display considerable stability in solution.