Pyridine-2-carboxylato chelated acylrhodium(III) organometallics: Spectroscopic, structural and theoretical studies
作者:Anikul Islam、Suman Mandal、Samantha J. Carrington、Indranil Chakraborty、Swarup Chattopadhyay
DOI:10.1016/j.poly.2019.02.033
日期:2019.11
the rhodium center as bidentate N,O-donor forming five-membered chelate ring. The spectral (UV–Vis, IR, NMR) and electrochemical data of the complexes are reported. The identity of 2(H) has been established by single-crystal X-ray structure determination which revealed distorted octahedral RhCNO2P2 coordination sphere. The pairs (P,P), (C,O) and (O,N) define the three trans directions. The electronic
摘要Rh(MeLsb)(PPh3)2Cl2(1)与三种不同取代的吡啶甲酸配体[Na(R-pic),R = H,Me,Cl]的钠盐在二氯甲烷-丙酮-水介质中的异相反应以优异的产率提供了Rh(Lal)(PPh3)2(R-pic)(2(R))类型的配合物。这些是酰基吡啶鎓(III)与吡啶甲酸配体的复合物的第一个实例。吡啶甲酸配体的螯合伴随两个Rh Cl键的断裂和醛亚胺官能团在1中的水解。该吡啶甲酸配体与铑中心配位成二齿N,O-给体,形成五元螯合环。报告了配合物的光谱(UV-Vis,IR,NMR)和电化学数据。2(H)的身份已通过单晶X射线结构测定确定,该结构揭示了扭曲的八面体RhCNO2P2配位球。对(P,P),(C,O)和(O,N)定义了三个反方向。配合物的电子结构和吸收光谱也通过密度泛函理论(DFT)和随时间变化的DFT分析进行了研究。