| Abstract: | The azaborate K2nido-NB10H11] is gained from nido-NB10H13 and KBHEt3] in a 1:2 ratio. The anion NB10H11]2?, which is isoelectronic with C2B9H11]2?, reacts with {η6-(C6R6) · RuCl2}2] (R = H, Me), {η5-(C5Me5)RhCl2}2], or Ni(PPh3)2Cl2] to give the azametalla-closo-dodecaboranes MNB10H11 with M = (C6Me6)Ru ( 2 ), (C6H6)Ru ( 3 ), (C5Me5)Rh ( 4 ), and (Ph3P)2Ni ( 5 ), respectively. The azametallaborane KCo(NB10H11)2] ( 6 ), which contains a sandwich-type coordinated Co atom, is formed from K2NB10H11] and CoCl2. The structure of 2 · CH2Cl2 was determined by X-ray diffraction. The products 2 – 6 can be derived from the icosahedral anion B12H12]2? on replacing a BH2? moiety by the isoelectronic nitrene NH and a BH moiety by the isolobal metal-complex fragment M. The N atom is six-coordinated in the cluster skeletons 2 – 6 . |
