Synthesis of hetero-substituted derivatives of cobalt bis(1,2-dicarbollide) |
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| Authors: | I D Kosenko I A Lobanova I B Sivaev P V Petrovskii V I Bregadze |
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| Institution: | 1. A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 119991, Moscow, Russian Federation
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| Abstract: | A new approach to synthesis of hetero-substituted derivatives of cobalt bis(1,2-dicarbollide) was proposed. The approach involves stepwise introduction of functional groups into different dicarbollide ligands. Halogenation of the monohydroxy derivative 8-OH-3,3??-Co-(1,2-C2B9H10)(1??,2??-C2B9H11)]? gave the corresponding halogen hydroxy derivatives 8-OH-8??-X-3,3??-Co(1,2-C2B9H10)2]? (X = Cl, Br, and I). Reactions of 8,8??-??-iodonium-3-commo-cobaltbis(1,2-dicarba-closo-dodecaborate) 8,8??-I-3,3??-Co(1,2-C2B9H10)2] with chloroform and 1,2-dibromoethane yielded the mixed halides 8-Y-8??-I-3,3??-Co(1,2-C2B9H10)2]? (Y = Cl and Br). |
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