Monodentate coordination of N-[di(phenyl/ethyl)carbamothioyl]benzamide ligands: synthesis, crystal structure and catalytic oxidation property of Cu(i) complexes
作者:Nanjappan Gunasekaran、Pandian Ramesh、Mondikalipudur Nanjappa Gounder Ponnuswamy、Ramasamy Karvembu
DOI:10.1039/c1dt10628g
日期:——
New four-coordinated tetrahedral copper(I) complexes have been synthesized from the reactions between [CuCl2(PPh3)2] and N-(diphenylcarbamothioyl)benzamide (HL1) or N-(diethylcarbamothioyl)benzamide (HL2) in benzene. These complexes have been characterized by elemental analyses, IR, UV/Vis, 1H, 13C and 31P NMR spectroscopy. The molecular structure of both the complexes, [CuCl(HL1)2(PPh3)] (1) and [CuCl(HL2)(PPh3)2] (2) were determined by single-crystal X-ray diffraction, which reveals distorted tetrahedral geometry around each Cu(I) ion. The combination of 2 (0.005 mmol) with hydrogen peroxide (2.5 mmol) in acetonitrile is found to be an active catalyst for the oxidation of primary and secondary alcohols (0.5 mmol) to their corresponding acids and ketones, respectively, at room temperature.
新的四配位四面体铜(I)配合物是通过在苯中将[CuCl2(PPh3)2]与N-(二苯基氨硫酰)苯胺(HL1)或N-(二乙基氨硫酰)苯胺(HL2)反应合成的。这些配合物通过元素分析、红外光谱、紫外/可见光谱、1H、13C和31P NMR光谱进行了表征。两个配合物[CuCl(HL1)2(PPh3)](1)和[CuCl(HL2)(PPh3)2](2)的分子结构通过单晶 X 射线衍射确定,结果显示每个Cu(I)离子周围具有扭曲的四面体几何形状。将2(0.005 mmol)与过氧化氢(2.5 mmol)在乙腈中组合发现是一种活性催化剂,能在室温下将初级和次级醇(0.5 mmol)氧化为相应的酸和酮。