Boron bends over for nickel: The Ni complexes [{tBu2PCCB(C6F5)2}Ni(cod)] (1) and [({tBu2PCCB(C6F5)2}Ni(NCMe))2] (2) derived from the reaction between the phosphino-alkynyl-borane tBu2PCCB(C6F5)2 and [Ni(cod)2] exhibit an unprecedented metal–alkyne interaction in which the borane substituent bends towards the metal affording a Ni→B dative interaction.
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Zhao et al. (2010) studied this question.
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