Synthesis and molecular studies of half-sandwich arene ruthenium and Cp*Rh/Cp*Ir complexes containing (3-picolyl)thiourea derivatives as N,S-bidentate donor ligands
作者:Mahesh Kalidasan、R. Nagarajaprakash、Kollipara Mohan Rao
DOI:10.1007/s11243-015-9946-x
日期:2015.8
Series of mononuclear complexes of arene Ru and Cp*Rh/Cp*Ir complexes containing (3-picolyl)thiourea derivative ligands, of general formulae [(η6-arene)Ru(L)Cl]Cl and [Cp*M(L)Cl]Cl L = benzoyl(3-picoylyl)thiourea, arene = benzene (1); p-cymene (2) and M = Rh (3); Ir (4); L = 1,3-bis(3-picolyl)thiourea, arene = benzene (5); p-cymene (6) and M = Rh (7); Ir (8)}, have been synthesized and characterized by spectroscopic methods. X-ray crystallographic studies of complexes (2)–(5), (7), and (8) reveal a typical piano-stool geometry around the metal center with a six-membered metallacycle, in which L acts as an N,S-chelating ligand. Intramolecular N–H···S, S···O, and N–H···N interactions are found to play a significant role in the molecular structures.
一系列单核的芳烃铑和Cp*铱复合物与(3-吡啶基)硫脲衍生物配体,其一般公式为 [(η6-arene)Ru(L)Cl]Cl 和 [Cp*M(L)Cl]Cl L = 苯甲酰(3-吡啶基)硫脲,芳烃 = 苯 (1);对异丙苯 (2) 和 M = Rh (3);Ir (4);L = 1,3-双(3-吡啶基)硫脲,芳烃 = 苯 (5);对异丙苯 (6) 和 M = Rh (7);Ir (8)} 已被合成并通过光谱方法进行表征。对复合物 (2)–(5),(7) 和 (8) 的X射线晶体学研究显示出金属中心周围具有典型的钢琴凳几何构型,其中特有一个六元金属环,其中L作为N,S-螯合配体。发现分子结构中的分子内N–H···S、S···O和N–H···N相互作用起着重要作用。