Two novel nido 11‐vertex diplatinaundecaborane clusters [(μ‐PPh2)(PPh3)2Pt2B9H6Cl(OiPr)2] (1) and [(μ‐PPh2)(PPh3)2Pt2B9H6(OiPr)3] (2) have been solvothermally synthesised and characterised by elemental analysis, IR, Raman, 1H and 13C NMR spectroscopy and single‐crystal X‐ray diffraction. The latter analysis revealed that two Pt atoms remain in neighbouring positions of the open Pt2B3 face in both clusters which were markedly different from the products obtained from the identical starting mixture under refluxing conditions. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)

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In the title complex, [HgCl2(C14H38B10P2)], the HgII atom is in a distorted HgCl2P2 tetra­hedral coordination environment. The chelation of the Hg atom by two P atoms and two C atoms from the carborane skeleton results in a nearly planar five-membered ring.

The title mononickeladodeca­borane cluster, [NiB11H6(OC3H7)5(H2O)2], has been synthesized by the reaction of dichloro­bis(triphenyl­phosphine)nickel(II) with triethyl­ammonium nido‐undeca­borane(14) in 2‐propanol. The NiIV atom is connected to five atoms of the boron cage to form a closo 12‐vertex {NiB11} icosa­hedral skeleton. All of the H atoms on the five B cage atoms connected to the Ni atom are substituted by isoprop­oxy groups. The NiIV atom is also bonded to two water mol­ecules. The mol­ecules form dimers through inter­molecular hydrogen‐bond inter­actions.