Über Metall-Stickoxid-Komplexe. XXV. Zur Kenntnis von Nitrosylcyano-Komplexen der Metalle der Eisengruppe |
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| Authors: | W. Hieber,H. Fü hrling |
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| Abstract: | The binuclear nitrosylhalides of iron and cobalt react with cyanide to anionic complexes [M(NO)2(CN)2]? (M = Fe, Co). Substituted monomeric compounds M(NO)2LBr and Ni(NO)L2Br lead primarily under replacement of bromide to nonionic complexes M(NO)2LCN and Ni(NO)L2CN. In general these complexes react with more cyanide yielding anions [M(NO)2(CN)2]?, [Ni(NO)L(CN)2]? and [Ni(NO)(CN)3]2?. The paramagnetic dinitrosyliron compounds can be reduced to diamagnetic complexes by Na/Hg. A disproportion reaction of Co(NO)2P(C6H5)3CN forms a salt [Co(NO)2 · (P(C6H5)3)2][Co(NO)2(CN)2], a similar salt can be made by the reaction of Na[Co(NO)2(CN)2] with [Co(NO)2(NHP(C6H5)32]Br. The IR spectra are discussed. |
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