Bis(aliphatic amine)ruthenium(II) porphyrins synthesis, spectroscopy and crystal structure

Abstract

The synthesis, characterization and reactivities of a series of ruthenium porphyrins including Ru1 (Por) (H2NR)2 and Ru1 (Por) (HNR2)2 [Por = tetraphenyl porphyrinato (TPP), meso-tetrakis(p-tolyl)porphyrinato (TTP), meso-tetrakis(4-chlorophenyl) porphyrinato (4-Cl-TPP); R=tert-butyl, isopropyl, cyclohexyl, n-octyl, n-dodecyl, R′ = methyl, ethyl are described. The reaction of Ru (Por) (CO) (MeOH) with m-chloroperoxylbenzoic acid(m-CPBA) followed by treatment of the reaction mixture with excess aliphatic amines readily gave bis (aliphatic amine) ruthenium (II) porphyrins in high yields. All the new complexes have been characterized by 1H NMR, IR, and UV-Visible spectroscopy. The X-ray crystal structure of Ru(TTP) (H2NBu1)2 has been determined. The Ru-N(Por) and Ru-N (H2NBu1) distances in Ru(TTP) (H2NBu1)2 are 0. 2041 nm and 0. 2175 nm, respectively.