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The new enneanuclear nickel carbonyl anion [Ni9(CO)16] and its relationships with the [Ni12(CO)21] and [Ni6Rh3(CO)17] clusters |
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| Authors: | Cristina Femoni Maria Carmela Iapalucci Giuliano Longoni Per H Svensson |
| Institution: | Dipartimento di Chimica Fisica ed Inorganica, Università di Bologna, viale Risorgimento 4, 40136, Bologna, Italy |
| Abstract: | The reaction of N(PPh3)2]2Ni6(CO)12] with Cu(PPh3)xCl (x=1, 2), as well as the degradation of N(PPh3)2]2H2Ni12(CO)21] with PPh3, affords the new and unstable dark orange–brown N(PPh3)2]2Ni9(CO)16].THF salt in low yields. This salt has been characterized by a CCD X-ray diffraction determination, along with IR spectroscopy and elemental analysis. The close-packed two-layer metal core geometry of the Ni9(CO)16]2? dianion is directly related to that of the bimetallic Ni6Rh3(CO)17]3? trianion and may be envisioned to be formally derived from the hcp three-layer geometry of Ni12(CO)21]4? by the substitution of one of the two outer Ni3(CO)3(μ?CO)3]2? layers with a face-bridging carbonyl group. |
| Keywords: | Crystal structures Nickel complexes Carbonyl complexes Cluster complexes Anion complexes |
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