Trapping of the N,C,N-chelated organobismuth(I) compound, [2,6-(Me2NCH2)2C6H3]Bi, by its coordination toward selected transition metal fragments

Publication date: Available online 20 March 2018 Source:Journal of Organometallic Chemistry Author(s): Iva Vránová, Tereza Dušková, Milan Erben, Roman Jambor, Aleš Růžička, Libor Dostál The in situ reduction of the N,C,N-chelated bismuth(III) chloride (ArBiCl2) (where Ar = 2,6-(Me2NCH2)2C6H3) with 2 M equivalents of K[B(s-Bu)3H] produced an unstable bismuth(I) compound ArBi (1) that was trapped by its coordination toward suitable transition metal fragments. Using this strategy a set of complexes with Group 6 metal carbonyls was obtained, i.e. [ArBiM(CO)5] (1-M; where M = Cr, Mo, W). The treatment of 1 with [Fe2(CO)9] provided the expected complex [ArBiFe(CO)4] (1-Fe) along with [ArBi(Fe(CO)4)2] (1-Fe 2 ) as a minor by-product. By contrast, the reaction of 1 with the dinuclear complex [Co2(CO)8] furnished ionic complex [(ArBi)2Co(CO)3][Co(CO)4] (1-Co). All compounds were characterized using 1H and 13C{1H} NMR, IR and Raman spectroscopy. Molecular structures of 1-Cr, 1-Fe, 1-Fe 2 and 1-Co were determined by the help of single-crystal X-ray diffraction analysis. Graphical abstract

Source: Journal of Organometallic Chemistry - March 21, 2018 Category: Chemistry Source Type: research