"RIV/61388955:_____/14:00434726" . . . "33" . "Fiedler, Jan" . . . . . "[0903D347C97B]" . "14111" . . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . . . "10.1021/om500039a" . . "RIV/61388955:_____/14:00434726!RIV15-AV0-61388955" . "Electrochemical Evidence for Hemilabile Coordination of 1,3-Dimethyllumazine to [1,1 '-Bis(diorganophosphino)ferrocene]copper(I)" . "Strobel, S." . "Electrochemical Evidence for Hemilabile Coordination of 1,3-Dimethyllumazine to [1,1 '-Bis(diorganophosphino)ferrocene]copper(I)"@en . . "Electrochemical Evidence for Hemilabile Coordination of 1,3-Dimethyllumazine to [1,1 '-Bis(diorganophosphino)ferrocene]copper(I)" . "8"^^ . . "Mobin, S. M." . "The complex cations [Cu(dippf)(DML)](+) ([1](+)) and [Cu(dppf)(DML)](+) ([2](+)), where dippf = 1,1'-bis(diisopropylphosphino)ferrocene, dppf = 1,1'-bis(diphenylphosphino)ferrocene, and DML = 1,3-dimethyllumazine, were prepared and crystallized as BF4- or PF6- salts. Structure determinations of the tetrafluoroborates revealed asymmetric O-4,N-5 chelation of DML to copper(I) with longer Cu-O bonds of about 2.25 angstrom. Reversible oxidation to [1](2+) and [2](2+) proceeds at the ferrocene units, while reduction leads to the neutral radical complexes [1] and [2] with the unpaired electron localized on the DML ligand. The occurrence of two voltammetric steps for the one-electron-reduction process is attributed to a two-species equilibrium caused by the hemilabile coordination of DML. Electrochemical and spectroelectrochemical measurements (UV-vis, IR) reveal increased coordination lability of the reduced complexes and their slow fragmentation." . "Kaim, W." . "Jana, R." . "I, P(LD14129)" . "18" . . "0276-7333" . . "Electrochemical Evidence for Hemilabile Coordination of 1,3-Dimethyllumazine to [1,1 '-Bis(diorganophosphino)ferrocene]copper(I)"@en . . "The complex cations [Cu(dippf)(DML)](+) ([1](+)) and [Cu(dppf)(DML)](+) ([2](+)), where dippf = 1,1'-bis(diisopropylphosphino)ferrocene, dppf = 1,1'-bis(diphenylphosphino)ferrocene, and DML = 1,3-dimethyllumazine, were prepared and crystallized as BF4- or PF6- salts. Structure determinations of the tetrafluoroborates revealed asymmetric O-4,N-5 chelation of DML to copper(I) with longer Cu-O bonds of about 2.25 angstrom. Reversible oxidation to [1](2+) and [2](2+) proceeds at the ferrocene units, while reduction leads to the neutral radical complexes [1] and [2] with the unpaired electron localized on the DML ligand. The occurrence of two voltammetric steps for the one-electron-reduction process is attributed to a two-species equilibrium caused by the hemilabile coordination of DML. Electrochemical and spectroelectrochemical measurements (UV-vis, IR) reveal increased coordination lability of the reduced complexes and their slow fragmentation."@en . "1"^^ . "Sarkar, B." . "Organometallics" . "electrochemistry; metal complexes; crystal structure"@en . "6"^^ . . "000342180800026" .