Thienyl carboxylate ligands bound to and bridging MM quadruple bonds, M = Mo or W: Models for polythiophenes incorporating MM quadruple bonds

Matthew J. Byrnes, Malcolm H. Chisholm, Robin J.H. Clark, Judith C. Gallucci, Christopher M. Hadad, Nathan J. Patmore

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A series of compounds of the form [M2L4] and [{( tBuCO2)3M2}2(μ- L′)] have been made where M = Mo or W, L = a thienyl, bithienyl, or terthienyl carboxylate, and L′ = a corresponding thienyl dicarboxylate. The electronic absorption spectra are reported and the electronic structures discussed. Intense metal-to-ligand charge transfer bands traverse the visible and near-IR regions of the electronic absorption spectrum. The compounds show reversible metal-based oxidations and quasireversible ligand-based reductions. The molecular structure of Mo2(O2C-2-Th) 4·2THF is reported, on the basis of a single crystal X-ray diffraction study. These compounds provide insight into the expected properties of related dimetalated polythiophenes incorporating MM quadruple bonds.

Original languageEnglish
Pages (from-to)6334-6344
Number of pages11
JournalInorganic Chemistry
Issue number20
Early online date1 Sep 2004
Publication statusPublished - 1 Oct 2004
Externally publishedYes


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