Stereochemical influences on intervalence charge transfer in homodinuclear complexes of ruthenium

被引:39
作者
D'Alessandro, DM [1 ]
Kelso, LS [1 ]
Keene, FR [1 ]
机构
[1] James Cook Univ N Queensland, Sch Pharm & Mol Sci, Townsville, Qld 4811, Australia
关键词
D O I
10.1021/ic010857c
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Spectroelectrochemical investigations of two dinuclear complexes [Ru-III(bpy)(2)(mu -BL)Ru-II(bpy)(2)](5+) (BL = 2,3-bis(2-pyridyl)-1,4-benzoquinoxaline (dpb); dipyrido-(2,3-a;3',2'-c)benzophenazine (dpb')) revealed that the intervalence charge transfer (IT) characteristics are sensitive to the stereochemistry. In particular, there appears to be a greater degree of metal-metal interaction in the meso compared with the rac diastereoisomeric form. Thermochromism. redox, and semiempirical computational studies suggest differential ion-paring between the diastereoisomeric forms.
引用
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页码:6841 / +
页数:5
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