Absorption and magnetic circular dichroism spectra of Ru4+ in Cs2ZrCl6 and Cs2SnBr6
Absorption and magnetic circular dichroism spectra of Ru4+ in Cs2ZrCl6 and Cs2SnBr6
复制标题
Ru4 在 Cs2ZrCl6 和 Cs2SnBr6 中的吸收和磁圆二色性光谱
DOI：
10.1080/00268977500102071
复制
发表时间：
1975
影响因子：
1.7
通讯作者：
P. McCarthy
中科院分区：
文献类型：
--
作者：
J. Collingwood;P. Schatz;P. McCarthy
高分辨吸收和磁圆二向色性(M.C.D.)报道了立方主体Cs2ZrCl6和Cs2SnBr6中Ru4+(4d4)的光谱。分别在液氦温度16000-26000 cm-1和11000-22000 cm-1范围内记录了光谱。所有的主要特征都可以用配体到金属的电荷转移转变来解释。结果说明了在4d4基态中使用中间耦合的必要性，对电荷转移带的详细分析得到了关于配体MO的自旋轨道分裂和金属-配体静电分裂的大小的大量信息。激发态的自旋-轨道耦合比金属和静电相互作用重要得多。与前人关于OsCl6 2-和OsBr6 2-(5d4)的工作进行了比较。
High resolution absorption and magnetic circular dichroism (M.C.D.) spectra are reported for Ru4+ (4d4) in the cubic hosts Cs2ZrCl6 and Cs2SnBr6. The spectra were recorded at liquid helium temperature over the ranges 16 000–26 000 cm-1 and 11 000–22 000 cm-1 respectively. All of the major features can be interpreted in terms of ligand-to-metal charge-transfer transitions. The results illustrate the need to use intermediate coupling in the 4d4 ground state, and a detailed analysis of the charge-transfer bands yields considerable information on the spin-orbit splittings of the ligand MO's and on the magnitude of metal-ligand electrostatic splittings. Excited state spin-orbit coupling is found to be much more important than metalligand electrostatic interactions. Comparisons are made with previous work on OsCl6 2- and OsBr6 2- (5d4).