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Issue 1, 2016
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Expanding the family of heterobimetallic Bi–Rh paddlewheel carboxylate complexes via equatorial carboxylate exchange

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Abstract

Five novel homoleptic heterobimetallic bismuth(II)–rhodium(II) carboxylate complexes—BiRh(TPA)4 (1), BiRh(but)4 (2), BiRh(piv)4 (3), BiRh(esp)2 (4), and BiRh(OAc)4 (5)—were synthesized in good yields by equatorial ligand substitution starting from BiRh(TFA)4 (TPA = triphenylacetate, but = butyrate, piv = pivalate, esp = α,α,α′,α′-tetramethyl-1,3-benzenedipropionate, OAc = acetate, and TFA = trifluoroacetate). We report here 1H and 13C{1H} NMR spectra and cyclic voltammograms for complexes 1–4, and IR spectra for all complexes. Irreversible redox waves appear between −1.4 to −1.5 V for [BiRh]3+/4+ couples and 1.3 to 1.5 V vs. Fc/Fc+ for [BiRh]4+/5+ couples for complexes 1–4 indicating a wide range of stability for the compounds. The X-ray crystal structure of 1 reveals a Bi–Rh distance of 2.53 Å.

Graphical abstract: Expanding the family of heterobimetallic Bi–Rh paddlewheel carboxylate complexes via equatorial carboxylate exchange

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The article was received on 24 Sep 2015, accepted on 17 Nov 2015 and first published on 19 Nov 2015


Article type: Communication
DOI: 10.1039/C5DT03740A
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Citation: Dalton Trans., 2016,45, 50-55
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    Expanding the family of heterobimetallic Bi–Rh paddlewheel carboxylate complexes via equatorial carboxylate exchange

    T. L. Sunderland and J. F. Berry, Dalton Trans., 2016, 45, 50
    DOI: 10.1039/C5DT03740A

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