Half-sandwich Cp*Rh^III complexes (Cp* = η⁵-1,2,3,4,5-pentamethylcyclopentadienyl) supported by 2,2′-bipyridine or 4,4′-di-tert-butyl-2,2′-bipyridine catalyze dehydrogenation of dimethylamine–borane (Me₂NH·BH₃) to produce H₂ and dimethylamino–borane dimer (Me₂N—BH₂)₂ with turnovers of 2200. The Ir^III analogues, on the other hand, display dramatically poorer catalytic activity. Mechanistic inferences drawn from stoichiometric reactions and DFT calculations suggest noninnocent involvement of the Cp* moiety as a proton shuttle.

中文翻译：

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半三明治Ir和Rh配合物催化的二甲胺硼烷的脱氢：机制和Cp *无毒作用

半夹心的Cp *铑^III复合物（CP * =η ⁵ -1,2,3,4,5五甲基环戊二烯）2,2'-联吡啶或4,4'-二-支持叔丁基-2,2-联吡啶二甲胺-甲硼烷的催化脱氢（ME ₂ NH·BH ₃），以生成H ₂和二甲基氨基甲硼烷二聚物（ME ₂的N- BH ₂）₂与2200的IR失误^III类似物，在另一方面，显示出明显较差的催化活性。从化学计量反应和DFT计算得出的机械推论表明Cp *部分作为质子穿梭的参与是无害的。