Electronic ground states of the trigonal-prismatic rhenium complexes, tris(cis-1,2-diphenylethene-1,2-dithiolato)rhenium, and tris(toluene-3,4-dithiolato)rhenium

Abstract

The electron paramagnetic resonance spectra of the trigonal prismatic complexes, [Re(S₂C₂Ph₂)₃] and [Re(tdt)₃](tdt = toluene-3,4-dithiolate), are characteristic of sulphur-containing organic radicals and they show that the unpaired electron in these compounds is in a non-bonding molecular orbital derived from the ligand π orbitals, E.p.r. properties, visible-u.v. absorption spectra, voltammetric properties, the magnetic properties of ions derived from [Re(S₂C₂R₂)₃], and the unusually high electrical conductivities exhibited by the solids are all consistent with an electronic ground state configuration (3a₁′)²(4e′)⁴(2a₂′)¹ for these complexes.