Communication between Remote Moieties in Linear Ru–Ru–Ru Trimetallic Cyanide-Bridged Complexes
摘要:
In this article, we report the structural, spectroscopic, and electrochemical properties of the cyanide-bridged complex salts trans-[(NC)Ru-II(L)(4)(mu-CN)Ru-II(py)(4)Cl]PF6 and trans-[Ru-II(L)(4){(mu-CN)-Ru-II(py)(4)Cl}(2)](PF6)(2) (L = pyridine or 4-methoxypyridine). The mixed-valence forms of these compounds show a variety of metal-to-metal charge-transfer 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 d pi orbitals of the terminal fragments.
Communication between Remote Moieties in Linear Ru–Ru–Ru Trimetallic Cyanide-Bridged Complexes
摘要:
In this article, we report the structural, spectroscopic, and electrochemical properties of the cyanide-bridged complex salts trans-[(NC)Ru-II(L)(4)(mu-CN)Ru-II(py)(4)Cl]PF6 and trans-[Ru-II(L)(4){(mu-CN)-Ru-II(py)(4)Cl}(2)](PF6)(2) (L = pyridine or 4-methoxypyridine). The mixed-valence forms of these compounds show a variety of metal-to-metal charge-transfer 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 d pi orbitals of the terminal fragments.