Ni(0) catalysed homo-coupling reactions:a novel route towards the synthesis of multinuclear ruthenium polypyridine complexes featuring made-to-order properties

摘要

A new synthetic procedure for the efficient preparation of dinuclear ruthenium (Ⅱ) polypyridyl complexes is reported.The compounds synthesised are [(bpy)_2Ru(BPBT)Ru(bpy)_2](PF_6)_2 and[(bpy)_2Ru(BPZBT)Ru(bpy)_2](PF_6)_2](bpy=2,2'-bipyridine;H_2BTBT=5,5'-bis(pyridin-2-yl)-3,3'-bis(1,2,4-triazole);H_2BPZBT=5,5'-bis(pyrazin-2-yl)-3,3'-bis(1,2,4-triazole).Electrochemical experiments show that the two dinuclear systems investigated exhibit pH switchable intercomponent interactions.