Eta 1 and eta 2 Coordination of 1-amino-closo-dodecaborate

The reaction of the sodium salt of 1-amino-closo-dodecaborate Na]2NH2-B12H11] (Na]21]) with Au(PPh3)Cl] and Ni(THF)2(Br)2] led to eta 1(N) coordination of 1in Na]Au(PPh3)(NH2-B12H11)] (2) and Na]6Ni(NH2-B12H11)4] (3), respectively. Furthermore, eta 2(N,BH) coordination of was found in MePPh3]Rh(PPh3)2(NH2-B12H11)] (4), which was synthesized by the reaction of MePPh3]Na]1] with Rh(PPh3)3Cl]. All compounds were characterized by single crystal X-ray diffraction and heteronuclear NMR spectroscopy.