%0 Journal Article %1 Berger.2001 %A Berger, S. %A Hartmann, H. %A Wanner, M. %A Fiedler, J. %A Kaim, W. %D 2001 %J Inorganica Chimica Acta %K IR IR;IR IR;TCNQ copper electrochem prepn redn;TCNE tetranitrile tetranuclear tetranuclear;TCNB triazacyclononane %N 1-2 %P 22--26 %R 10.1016/S0020-1693(00)00368-6 %T Tetranuclear complexes (μ4-TCNX)Cu(Me3TACN)4(BF4)4 with TCNX = TCNE, TCNQ or TCNB (1,2,4,5-tetracyanobenzene) and Me3TACN = 1,4,7-trimethyl-1,4,7-triazacyclononane %V 314 %X The title complexes (μ4-TCNX)Cu(Me3TACN)4(BF4)4 TCNX = TCNE, TCNQ or TCNB (1,2,4,5-tetracyanobenzene) and Me3TACN = 1,4,7-trimethyl-1,4,7-triazacyclononane were obtained as blue solids from the reaction of TCNX ligands with four equiv. of (MeCN)Cu(Me3TACN)(BF4). The poorly sol. (TCNB) or insol. compds. (TCNE, TCNQ) exhibit nitrile IR stretching frequencies compatible with only a moderate metal-to-TCNX electron transfer. This observation stands in contrast to results obtained for previously reported tetranuclear species from the reaction of TCNX ligands with complex fragments contg. d6-configurated metal centers (MnI, RuII, OsII). The TCNB complex was characterized in soln. by cyclic voltammetry, 1H NMR, IR and UV-visible spectroelectrochem. and by EPR of the 1-electron reduced form. on SciFinder(R)

@article{Berger.2001, abstract = {The title complexes {(μ4-TCNX)[Cu(Me3TACN)]4}(BF4)4 [TCNX = TCNE, TCNQ or TCNB (1,2,4,5-tetracyanobenzene) and Me3TACN = 1,4,7-trimethyl-1,4,7-triazacyclononane] were obtained as blue solids from the reaction of TCNX ligands with four equiv. of [(MeCN)Cu(Me3TACN)](BF4). The poorly sol. (TCNB) or insol. compds. (TCNE, TCNQ) exhibit nitrile IR stretching frequencies compatible with only a moderate metal-to-TCNX electron transfer. This observation stands in contrast to results obtained for previously reported tetranuclear species from the reaction of TCNX ligands with complex fragments contg. d6-configurated metal centers (MnI, RuII, OsII). The TCNB complex was characterized in soln. by cyclic voltammetry, 1H NMR, IR and UV-visible spectroelectrochem. and by EPR of the 1-electron reduced form. [on SciFinder(R)]}, added-at = {2022-06-15T11:26:56.000+0200}, author = {Berger, S. and Hartmann, H. and Wanner, M. and Fiedler, J. and Kaim, W.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2c56bb5ed13d95231ed751c0ecf4ccc05/huebleriac}, doi = {10.1016/S0020-1693(00)00368-6}, interhash = {6467b7ca3b311f45116e33b6b37f0e2f}, intrahash = {c56bb5ed13d95231ed751c0ecf4ccc05}, issn = {0020-1693}, journal = {Inorganica Chimica Acta}, keywords = {IR IR;IR IR;TCNQ copper electrochem prepn redn;TCNE tetranitrile tetranuclear tetranuclear;TCNB triazacyclononane}, number = {1-2}, pages = {22--26}, timestamp = {2022-06-15T09:26:56.000+0200}, title = {Tetranuclear complexes {(μ4-TCNX)[Cu(Me3TACN)]4}(BF4)4 with TCNX = TCNE, TCNQ or TCNB (1,2,4,5-tetracyanobenzene) and Me3TACN = 1,4,7-trimethyl-1,4,7-triazacyclononane}, volume = 314, year = 2001 }