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Accessing Homo- and Heterobimetallic Complexes with a Dianionic Pentadentate Ligand
Simon H F Schreiner1, Fabian Göhler2,3, C Christopher Almquist4
1Institut für Chemie, Technische Universität Chemnitz, Strasse der Nationen 62, Chemnitz 09111, Germany.
Abstract:
The tetrapyrazolylpyridyl diborate (B2Pz4Py) ligand provides a suitable platform for the isolation of heterobimetallic main-group element compounds as well as homotetrametallic copper complexes. The heterobimetallic tin(II)-lithium(I) (1) and tin(II)-thallium(I) (2) complexes have been synthesized, isolated, and fully characterized including single-crystal X-ray diffraction analysis. When reacted with copper(I) sources, complex 2 grants access to a homotetrametallic copper(I) complex (4). Upon subsequent oxidation, 4 gives rise to the bimetallic copper(II) complex 5, in which the two copper(II) centers are connected via a bridging bromido ligand (CuII-μ-Br-CuII).
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