PHOTOPHYSICAL AND PHOTOCHEMICAL PROPERTIES OF DINUCLEAR RUTHENIUM(II) COMPLEXES CONTAINING 2,2'-BIPYRIDINE AND 1,10-PHENANTHROLINE MOIETIES

被引：31

作者：

HUGHES, HP

MARTIN, D

BELL, S

MCGARVEY, JJ

VOS, JG

机构：

[1] DUBLIN CITY UNIV,SCH CHEM SCI,DUBLIN 9,IRELAND

[2] QUEENS UNIV BELFAST,SCH CHEM,BELFAST BT9 5AG,NORTH IRELAND

来源：

INORGANIC CHEMISTRY | 1993年 / 32卷 / 20期

关键词：

D O I：

10.1021/ic00072a040

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The excited state and redox properties of the two mixed-ligand species [Ru(bpy)2(bpt)Ru(phen)2](PF6)3 and [Ru-(phen)2(bpt)Ru(bpy)2](PF6)3 are reported (where bpy = 2,2'-bipyridine, phen = 1,10-phenanthroline, and Hbpt = 3,5-bis(pyridin-2-yl)-1,2,4-triazole) and compared with those obtained for [Ru(bpy)2(bpt)]PF6.1/2H2O, [(Ru-(bpy)2)2(bpt)](PF6)3, [Ru(phen)2(bpt)]PF6-H2O, [(Ru(phen)2)2(bpt)](PF6)3, [Ru(bpy)3]2+, and [Ru(phen)3]2+. Spectroelectrochemical data indicate that in all dinuclear compounds the ruthenium unit bound to the NI site of the triazole ring is oxidized first. In both [Ru(bpy)2(bpt)Ru(phen)2]3+ and [Ru(phen)2(bpt)Ru(bpy)2]3+ the lowest 3MLCT state is bpy based. Upon photolysis in MeCN only the metal center bound to the N4-site of the triazole ring is labilized. However, in MeCN/Cl- and CH2Cl2/Cl- solutions, both the N1 and N4 sites are photoreactive.

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页码：4402 / 4408

页数：7

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