Ligand to metal charge transfer transitions in Ru(III) and Os(III) complexes of substituted 2,2'-bipyridines
Ligand to metal charge transfer transitions in Ru(III) and Os(III) complexes of substituted 2,2'-bipyridines
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取代 2,2-联吡啶的 Ru(III) 和 Os(III) 配合物中配体到金属的电荷转移跃迁
DOI：
10.1016/0010-8545(94)80049-9
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发表时间：
1994
影响因子：
20.6
通讯作者：
Md. K. Nazeeruddin
中科院分区：
文献类型：
--
作者：
K. Kalyanasundaram;S. M. Zakeeruddin;Md. K. Nazeeruddin
研究了配合物[M(X2-bpy)3]3+和[M(Bpy)n(x2-bpy)3-n]3+(M=Ru或Os，X=Me，Om，NH2和NMe2)中低能LMCT跃迁能量和强度的变化。在均三螯合物中，低能LMCT跃迁的能量范围很窄，Ru(III)为1.80±0.1V，Os(III)为2.20±0.1V。在混配络合物中，LMCT转变发生在低得多的能量下。给出了给电子强度和Hammett取代基常数的定量分析。
The variations in the energy and intensity of the low-energy LMCT transitions have been examined in the complexes [M(X2-bpy)3]3+and [M(bpy)n(X2-bpy)3-n]3+(M = Ru or Os, X = Me, OMe, NH2and NMe2). In the homo tris-chelates the energy of the low-energy LMCT transition falls within a narrow range of 1.80 ± 0.1V for Ru(III) and 2.20 ± 0.1 V for Os(III). The LMCT transition occurs at much lower energy in mixed ligand complexes. A quantitative analysis as a function of donor strength and Hammett substituent constants is presented.