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Nickel(II) complexes with nitrogen-containing derivatives of the closo-decaborate anion |
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| Authors: | A S Kubasov E Yu Matveev V M Retivov S S Akimov G A Razgonyaeva I N Polyakova N A Votinova K Yu Zhizhin N T Kuznetsov |
| Institution: | 1. N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky prosp., 119991, Moscow, Russian Federation 2. M. V. Lomonosov Moscow State University of Fine Chemical Technologies, 86 Vernadskii prosp., 119571, Moscow, Russian Federation 3. Research Institute of Chemical Reactants and Ultrapure Compounds (IREA), 3 Bogorodskiy val, 107076, Moscow, Russian Federation |
| Abstract: | The reactions of the salt (Bu4N)2-B10H9O2C4H8] (1) with ammonia and ethylenediamine in ethanol were studied. These reactions afford substituted closo-decaborates with nitrogencontaining groups linked to the cluster through a diethylene glycol spacer. Using this method, we synthesized derivatives of the closo-decaborate anion with the pendant groups -NH3 + and -NHCH2CH2NH2; the complexes Ni(H2O)(en)(L)] (7) and Ni(en)(L)]·0.5H2O (8), where L = 2-B10H9O(CH2)2O(CH2)2NH(CH2)2NH2]2?, were synthesized. The X-ray diffraction study showed that the coordination sphere of the Ni2+ ions in complexes 7 and 8 have the same composition (4 N + 2 O). However, the coordination environment differs in the nature of the oxygen atom. Thus the oxygen atom directly bonded to the boron cluster is involved in the coordination of the metal ion in compound 8, whereas a water molecule is involved in the coordination in compound 7. |
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