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12 A nido-6-manganadecaborane salt

Kennedy, A.R. and Morris, J.H. (2000) 12 A nido-6-manganadecaborane salt. Acta Crystallographica Section C: Crystal Structure Communications, 57 (3). pp. 269-270. ISSN 0108-2701

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Abstract

A new manganadecaborane has been isolated as a previously unsuspected product from the reaction of [Mn(CO)5Br] with K[B9H14]. The anion of tetra­butyl­ammonium 5-bromo-6,6,6-tri­carbonyl-6-manganadodeca­hydro­decaborate(1−), (C16H36N)­[Mn(B9H12Br)(CO)3], has a nido cage structure. The Mn atom is bonded through three B - Mn bonds of similar length [2.221 (4), 2.224 (3) and 2.236 (3) î..] and two bridging H atoms. The position of the bromo substituent breaks the twofold symmetry of the cage found in simple analogues, and this is reflected in the B - B bond parameters.