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Heterolytic B-H activation and H-H formation on an Os-SH bond give borylthiolate-dihydrogen derivatives. These species exchange borylthiol by borane to afford σ-borane derivatives or release H2 and undergo a hydride-boryl exchange to yield boryl-hydrogensulfide complexes depending on the boryl group bonded to the sulfur atom.
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Esteruelas et al. (2013) studied this question.
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