Synthesis, crystal structures and properties of cis- and trans-isomers of [Pt{C_6H_4-4R~1-1-[C_8H _4N-3′-NOMe]}Cl_2(dmso)] (R~1 = H or Cl)

摘要

The study of the reactivity of the 3-methoxyimino-2-phenyl-3H-indoles C_6H_4-4R~1-1-[C_8H_4N- 3′-NOMe] [R~1 = Cl (1a) or H (1b)] with cis-[PtCl _2(dmso)_2] has allowed the isolation of trans-[Pt{C _6H_4-4R~1-1-[C_8H_4N- 3′-NOMe]}Cl_2(dmso)] [R~1 = Cl (2a) or H (2b)] and cis-[Pt{C_6H_4-4R~1-1-[C_8H _4N-3′-NOMe]}Cl_2(dmso)]·CH_2Cl _2 [R~1 = Cl (3a) or H (3b)]. Their crystal structures confirm: (a) the existence of a PtN_(indole) bond, (b) the relative arrangement of the Cl~- ligands (trans in 2a and 2b or cis in 3a and 3b) and (c) the anti- (E) configuration of the oxime. A comparative study of the spectroscopic and photo-optical properties of ligands and their platinum(II) complexes (2a, 2b, 3a and 3b) is also reported.