%0 Journal Article %1 Bach.2015 %A Bach, Monika %A Roy, Sayak %A Sarkar, Biprajit %A Bubrin, Martina %A Niemeyer, Mark %A Fiedler, Jan %A Duboc, Carole %A Kaim, Wolfgang. %D 2015 %J Zeitschrift fuer Anorganische und Allgemeine Chemie %K bispyrazinyltetrazine bispyridyltetrazine bridge bridged complex complex;cyclic copper dppf electrochem prepn redn;bispyridyltetrazine redn;crystal structure voltammetry %N 2 %P 327--331 %R 10.1002/zaac.201400564 %T Heterotetranuclear Complexes of Reduced and Non-reduced Bridging 1,2,4,5-Tetrazine Ligands with 1,1'-Bis(diphenylphosphanyl)-ferrocene-copper(I) %V 641 %X Complexes (μ-bptz)[Cu(dppf)]2(BF4)2 [(1)(BF4)2] [bptz = 3,6-bis(2-pyridyl)-1,2,4,5-tetrazine, dppf = 1,1'-bis(diphenylphosphino)ferrocene] and (μ-bpztz)[Cu(dppf)]2(PF6)2 [(2)(PF6)2] [bpztz = 3,6-bis(2-pyrazinyl)-1,2,4,5-tetrazine] contain two redox-active heterodinuclear FeIICuI moieties, bridged by a redox-active ligand. A crystal structure detn. of (1)(BF4)2·4CH2Cl2 confirms the nonreduced arom. nature of the bridge, in contrast to previous results on dicopper(I) complexes of bptz. Facile 1-electron redn. produces the radical complexes (μ-bptz)[Cu(dppf)]2+ (1+) and (μ-bpztz)[Cu(dppf)]2+ (2+), which could be isolated [as (1)(BF4)] and studied by variable frequency EPR to provide hyperfine (9.5 GHz) and g anisotropy information (285 GHz). Cyclic voltammetry and UV/visible/NIR spectroelectrochem. indicate a reversible two-electron oxidn. of the well sepd. ($\sim$13.4 \AA) ferrocene termini. [on SciFinder(R)]

@article{Bach.2015, abstract = {Complexes {(μ-bptz)[Cu(dppf)]2}(BF4)2 [(1)(BF4)2] [bptz = 3,6-bis(2-pyridyl)-1,2,4,5-tetrazine, dppf = 1,1'-bis(diphenylphosphino)ferrocene] and {(μ-bpztz)[Cu(dppf)]2}(PF6)2 [(2)(PF6)2] [bpztz = 3,6-bis(2-pyrazinyl)-1,2,4,5-tetrazine] contain two redox-active heterodinuclear FeIICuI moieties, bridged by a redox-active ligand. A crystal structure detn. of (1)(BF4)2·4CH2Cl2 confirms the nonreduced arom. nature of the bridge, in contrast to previous results on dicopper(I) complexes of bptz. Facile 1-electron redn. produces the radical complexes {(μ-bptz)[Cu(dppf)]2}+ (1+) and {(μ-bpztz)[Cu(dppf)]2}+ (2+), which could be isolated [as (1)(BF4)] and studied by variable frequency EPR to provide hyperfine (9.5 GHz) and g anisotropy information (285 GHz). Cyclic voltammetry and UV/visible/NIR spectroelectrochem. indicate a reversible two-electron oxidn. of the well sepd. ($\sim$13.4 {\AA}) ferrocene termini. [on SciFinder(R)]}, added-at = {2022-06-15T11:26:56.000+0200}, author = {Bach, Monika and Roy, Sayak and Sarkar, Biprajit and Bubrin, Martina and Niemeyer, Mark and Fiedler, Jan and Duboc, Carole and Kaim, Wolfgang.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2fc103f80405ffdd9ce408016052dae7c/huebleriac}, doi = {10.1002/zaac.201400564}, interhash = {1e1190237049aed5bdd394805361473a}, intrahash = {fc103f80405ffdd9ce408016052dae7c}, issn = {0044-2313}, journal = {Zeitschrift fuer Anorganische und Allgemeine Chemie}, keywords = {bispyrazinyltetrazine bispyridyltetrazine bridge bridged complex complex;cyclic copper dppf electrochem prepn redn;bispyridyltetrazine redn;crystal structure voltammetry}, number = 2, pages = {327--331}, timestamp = {2022-06-15T09:26:56.000+0200}, title = {Heterotetranuclear Complexes of Reduced and Non-reduced Bridging 1,2,4,5-Tetrazine Ligands with 1,1'-Bis(diphenylphosphanyl)-ferrocene-copper(I)}, volume = 641, year = 2015 }