Communication between Remote Moieties in Linear Ru−Ru−Ru Trimetallic Cyanide-Bridged Complexes

GERMAN E. PIESLINGER; PABLO ALBORES; LEONARDO D. SLEP; BENJAMIN J. COE; CLIFF J. TIMPSON; LUIS M. BARALDO

INORGANIC CHEMISTRY

AMER CHEMICAL SOC

Lugar: Washington; Año: 2013 vol. 52 p. 2906 - 2917

0020-1669

In this article, we report the structural, spectroscopic, and electrochemical properties of the cyanide-bridged complex salts trans- [(NC)RuII(L)4(μ-CN)RuII(py)4Cl]PF6 and trans-[RuII(L)4{(μ-CN)- RuII(py)4Cl}2](PF6)2 (L = pyridine or 4-methoxypyridine). The mixedvalence forms of these compounds show a variety of metal-to-metal chargetransfer bands, including one arising from charge transfer between the remote ruthenium units. The latter is more intense when L = 4- methoxypyridine and points to the role of the bridging ruthenium unit in promoting mixing between the dπ orbitals of the terminal fragments.