X-ray Structure and Electrochemical Properties of a Tpen-Bridged Hetero-Binuclear Complex fac-, fac-[Re_VIIO₃(μ-tpen)Re^I(CO)₃](PF₆)₂ where Tpen Is N, N, N', N'-Tetrakis (2-pyridylmethyl) ethylenediamine

Abstract

The molecular structure and electrochemical properties of the title complex, 1, are reported. Single-crystal X-ray diffraction study reveals that complex 1 consists of two distinct metal centers, fac-{ReO₃}⁺ and fac-{Re (CO) ₃}⁺, which are bridged by tpen in a k³-k³ coordination mode with a minimal metal-metal interactions (Re…Re=7.660 (1) Å). Complex 1 undergoes irreversible reduction and oxidation in 0.1 M n-Bu₄NPF₆-CH₃CN, which are associated with the two metal centers, fac-{ReO₃} and fac-{Re (CO) ₃}⁺.