Synthesis and characterization of ruthenium complexes with 1-aryl-2-mercaptoimidazole ligands

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• 作者：Ai-Quan Jia^a ; ^{jaiquan@ahut.edu.cn} ; Qing Ma^a ; ^b ; Qun Chen^b ; Hua-Tian Shi^a ; Wa-Hung Leung^c ; Qian-Feng Zhang^a ; ^b ;
• 关键词：Ruthenium ; Vinyl ; 1-Aryl-2-mercaptoimidazole ; N&ndash ; H bond addition ; X-ray structure
• 刊名：Journal of Organometallic Chemistry
• 出版年：2012
• 期刊代码：64_0022328x
• 类别：ch
• 出版时间：15 May, 2012
• 卷：705
• 期：Complete
• 页码：34-38
• 文件大小：621 K

摘要

Reactions of the vinyl ruthenium starting material Ru(CHCHPh)Cl(CO)(PPh₃)₂ (1) with 1-aryl-2-mercaptoimidazole (HLa, aryl聽=聽4-chloro-phenyl; HLb, aryl聽=聽4-methyl-phenyl; HLc, aryl聽=聽4-nitro-phenyl) in the presence of sodium methoxide in dichloromethane and methanol afforded [Ru(CHCHPh)(魏²-L)(CO)(PPh₃)₂] (2a-2c). Treatment of 1 with HL in THF gave [RuCl(魏²-L)(CO)(PPh₃)₂] (3a-3c) contaminant with formation of styrene as byproduct. Interactions of 1 with HLa in dichloromethane led to isolation of a novel dinuclear ruthenium complex [(CO)(PPh₃)(CHNCH₂Ph)Ru(渭-Cl)₂(渭-S)RuCl(CO)(PPh₃)] (4a) via N-H bond addition to styryl ligand. Complexes 2a-2c, 3a-3c, and 4a were characterized by microanalyses, IR, and (¹H, ¹³C, ³¹P) NMR spectroscopies. The molecular structures of 3a-3c and 4a have been determined by single-crystal X-ray diffraction.