Syntheses and characterization of new mononuclear and dinuclear complexes derived from ruthenium polypyridines
作者:Aída Ben Altabef、Susana B. Ribotta de Gallo、María E. Folquer、Néstor E. Katz
DOI:10.1016/s0020-1693(00)80919-6
日期:1991.10
complexes containing the Ru(bpy)(trpy) 2+ moiety (bpy=2,2′-bipyridine; trpy=2,2′:6′,2″-terpyridine) as a photosensitizer, 4-CNpy (=4-cyanopyridine) as a bridging ligand and Ru(NH 3 ) 5 n+ as an electron donor ( n =2) or acceptor ( n =3) capping group were synthesized and characterized by spectroscopic and electrochemical techniques. In the mononuclear complex [Ru II (bpy)(trpy)(4-CNpy)] 2+ (I) IR, UV-Vis and
摘要含有Ru(bpy)(trpy)2+部分(bpy = 2,2'-联吡啶; trpy = 2,2':6',2''-三联吡啶)作为光敏剂的新配合物,4-CNpy(= 4通过光谱和电化学技术合成并表征了作为桥键配体的-氰基吡啶)和作为电子给体(n = 2)或受体(n = 3)封端基的Ru(NH 3)5 n +。在单核复合物中[Ru II(bpy)(trpy)(4-CNpy)] 2+(I)的IR,UV-Vis和循环伏安数据(v CN(腈)= 2237 cm -1;λmax = 432和在CH 3 CN中为464 nm; E 1 2(Ru III / Ru II)= 1.23 V,在CH 3 CN中相对于SCE)指向4-CNpy的吡啶键合异构体。在桥接复合物[Ru II(bpy)(trpy)(4-CNpy)Ru II(NH 3)5] 4+(II)中,4-CNpy的腈端与封端的Ru II(NH 3)5组协调如光谱吸收的变化所揭示的(v