The electroabsorption spectra for the metal-to-ligand charge transfer transition in complexes containing oxalate and terephthalate bridged MM quadruply bonded units, [(MM)(pivalate)3]2- μ2-BR, where M = Mo or W and BR = oxalate or terephthalate, are reported. The measured magnitude of the change in dipole moment (|Δμ→|) and the change in polarizability (Δ∝) that accompany this electronic transition are found to be small and not to follow the behavior expected on the basis of the two-state model. In addition, the trend in the value of Δ∝ for the neutral states is mirrored by the trend in the degree of electronic coupling (HAB) for the strongly coupled mixed valence states formed by the same complexes in their singly oxidized states.
All Science Journal Classification (ASJC) codes
- Physical and Theoretical Chemistry
- Inorganic Chemistry