Identification of geometrical isomers using vibrational circular dichroism spectroscopy: a series of mixed-ligand complexes of diamagnetic Co(<scp>iii</scp>) ions
作者:Hisako Sato、Hidemitsu Uno、Haruyuki Nakano
DOI:10.1039/c0dt01342k
日期:——
Vibrational circulardichroism (VCD) spectra were measured on the chloroform solutions of a series of mixed-ligand diamagnetic Co(III) complexes, [Co(tfac)n(acac)3−n] (n = 0–3, tfac = 1,1,1-trifluoro-2,4-pentanedionato; acac = acetylacetonato). Distinct differences were observed in the VCD spectra among the geometrical isomers of the same ligand composition. Such differentiation was hardly possible
振动圆二色性(VCD)光谱是在一系列混合配体抗磁性Co(III)配合物[Co(tfac)n(acac)3- n ](n = 0–3,tfac = 1 ,1,1-三氟-2,4-戊二酮; acac =乙酰丙酮。相同配体组成的几何异构体在VCD光谱中观察到明显差异。仅靠它们的红外光谱很难实现这种区分。这些异构体的结构鉴定是结合DFT计算进行的。