Syntheses, structures, and catalytic properties of two arene-ruthenium(II) complexes bearing N-(2-pyridinyl)aminodiphenylphosphine sulfide ligands

Abstract

Abstract Treatment of [(arene)Ru(μ-Cl)Cl]2 with Ph2P(S)NH(2-py) in the presence or absence of base gave two arene-ruthenium(II) complexes [(η 6-p-cymene)Ru{κ 2-N,N-Ph2P(S)N(2-py)}Cl] (1) and [(η 6-benzene)Ru{κ 1-N-Ph2P(S)NH(2-py)}Cl2] (2), which have been characterized by infrared, nuclear magnetic resonance spectroscopies, and mass spectrometry along with microanalyses. Crystal structures of Ph2P(S)NH(2-py) · ¼C6H14, 1 and 2 · ½CH2Cl2 were determined by single-crystal X-ray diffraction. Two arene-ruthenium(II) complexes were tested as precatalysts for the transfer hydrogenation of acetophenone to give 1-phenyl ethanol.