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- W1992712455 abstract "The tetraethylammonium salts of the formamidino metal carbonyl anions [M(CO)4{HC(NR)2}]− (M = Cr, Mo or W; R = aryl, t-Bu) are readily accessible via the 1/1 reaction of NEt4[M(CO)5Cl] with the appropriate potassium formamidine. The reaction of NEt4[M(CO)5Cl] with N, N′-dimethyl formamidine yields the carbamoyl type of complex NEt4[M(CO)4{HC(NMe)N(CO)Me}] (M = Cr, Mo, W), in which a CO molecule has been inserted into the MN bond. The 13C-NMR spectra of these compounds show fluxional behaviour of the terminal carbonyls. When heated with triphenylphosphine or pyridine the complexes NEt4[M(CO)4{HC(N-p-tolyl)2}] (M = Mo, W) undergo carbonyl substitution giving fac-NEt4[M(CO)3L{HC(N-p-tolyl)2}]. The structures of these anionic complexes and the nature of the bonding of the metal-to-formamidino group are discussed on the basis of 1H- and 13C-NMR and IR spectroscopic data." @default.
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- W1992712455 date "1978-07-01" @default.
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- W1992712455 title "Synthesis and properties of the anionic formamidino metal carbonyl complexes [M(CO)4{HC(NR)2}]− (M = Cr, Mo, W; K = aryl, t-butyl)" @default.
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- W1992712455 doi "https://doi.org/10.1016/s0022-328x(00)90867-2" @default.
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