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$13.4 \AA) ferrocene termini. on SciFinder(R)
%0 Journal Article
%1 Bach.2015
%A Bach, Monika
%A Roy, Sayak
%A Sarkar, Biprajit
%A Bubrin, Martina
%A Niemeyer, Mark
%A Fiedler, Jan
%A Duboc, Carole
%A Kaim, Wolfgang.
%D 2015
%J Zeitschrift fuer Anorganische und Allgemeine Chemie
%K bispyrazinyltetrazine bispyridyltetrazine bridge bridged complex complex;cyclic copper dppf electrochem prepn redn;bispyridyltetrazine redn;crystal structure voltammetry
%N 2
%P 327--331
%R 10.1002/zaac.201400564
%T Heterotetranuclear Complexes of Reduced and Non-reduced Bridging 1,2,4,5-Tetrazine Ligands with 1,1'-Bis(diphenylphosphanyl)-ferrocene-copper(I)
%V 641
%X Complexes (μ-bptz)Cu(dppf)2(BF4)2 (1)(BF4)2 bptz = 3,6-bis(2-pyridyl)-1,2,4,5-tetrazine, dppf = 1,1'-bis(diphenylphosphino)ferrocene and (μ-bpztz)Cu(dppf)2(PF6)2 (2)(PF6)2 bpztz = 3,6-bis(2-pyrazinyl)-1,2,4,5-tetrazine contain two redox-active heterodinuclear FeIICuI moieties, bridged by a redox-active ligand. A crystal structure detn. of (1)(BF4)2·4CH2Cl2 confirms the nonreduced arom. nature of the bridge, in contrast to previous results on dicopper(I) complexes of bptz. Facile 1-electron redn. produces the radical complexes (μ-bptz)Cu(dppf)2+ (1+) and (μ-bpztz)Cu(dppf)2+ (2+), which could be isolated as (1)(BF4) and studied by variable frequency EPR to provide hyperfine (9.5 GHz) and g anisotropy information (285 GHz). Cyclic voltammetry and UV/visible/NIR spectroelectrochem. indicate a reversible two-electron oxidn. of the well sepd. ($\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 = {2019-07-15T13:41:23.000+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/b_schwederski},
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 = {2019-07-15T11:42:10.000+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
}
