The red radical complex (μ-bptz)Cu(AsPh3)22(BF4) 1, bptz = 3,6-bis(2-pyridyl)-1,2,4,5-tetrazine, was obtained as a stable species and characterized by x-ray crystallog., spectroelectrochem. and EPR at 9.5 and 285 GHz. Comparison with the previously reported (μ-bptz)Cu(PPh3)22(BF4) 2 reveals longer Cu-element bonds by $\sim$0.1 \AA but otherwise a similar org. sandwich structure involving intramol. p(phenyl)-p(tetrazine)-p(phenyl) interactions, a 3+1 coordination at the Cu(I) centers, and averaged tetrazine intraring bond distances. Reversible oxidn. to a blue dication with an intense MLCT band at 650 nm occurs at -0.24 V vs. Fc+/0. EPR studies show the effect of the higher spin-orbit coupling const. of the As vs. P atoms through slightly larger g anisotropy as detd. through high frequency measurements. on SciFinder(R)
%0 Journal Article
%1 Ye.2003
%A Ye, Shengfa
%A Kaim, Wolfgang
%A Sarkar, Biprajit
%A Schwederski, Brigitte
%A Lissner, Falk
%A Schleid, Thomas
%A Duboc-Toia, Carole
%A Fiedler, Jan.
%D 2003
%J Inorganic Chemistry Communications
%K arsine complex complex;ESR complex;electrochem copper prepn pyridyltetrazine redox structure structure;crystal
%N 9
%P 1196--1200
%R 10.1016/S1387-7003(03)00216-8
%T First crystal structure determination and high-frequency EPR study of an organoarsanecopper radical complex
%V 6
%X The red radical complex (μ-bptz)Cu(AsPh3)22(BF4) 1, bptz = 3,6-bis(2-pyridyl)-1,2,4,5-tetrazine, was obtained as a stable species and characterized by x-ray crystallog., spectroelectrochem. and EPR at 9.5 and 285 GHz. Comparison with the previously reported (μ-bptz)Cu(PPh3)22(BF4) 2 reveals longer Cu-element bonds by $\sim$0.1 \AA but otherwise a similar org. sandwich structure involving intramol. p(phenyl)-p(tetrazine)-p(phenyl) interactions, a 3+1 coordination at the Cu(I) centers, and averaged tetrazine intraring bond distances. Reversible oxidn. to a blue dication with an intense MLCT band at 650 nm occurs at -0.24 V vs. Fc+/0. EPR studies show the effect of the higher spin-orbit coupling const. of the As vs. P atoms through slightly larger g anisotropy as detd. through high frequency measurements. on SciFinder(R)
@article{Ye.2003,
abstract = {The red radical complex {(μ-bptz)[Cu(AsPh3)2]2}(BF4) 1, bptz = 3,6-bis(2-pyridyl)-1,2,4,5-tetrazine, was obtained as a stable species and characterized by x-ray crystallog., spectroelectrochem. and EPR at 9.5 and 285 GHz. Comparison with the previously reported {(μ-bptz)[Cu(PPh3)2]2}(BF4) 2 reveals longer Cu-element bonds by $\sim$0.1 {\AA} but otherwise a similar org. sandwich structure involving intramol. \textgreek{p}(phenyl)-\textgreek{p}(tetrazine)-\textgreek{p}(phenyl) interactions, a 3+1 coordination at the Cu(I) centers, and averaged tetrazine intraring bond distances. Reversible oxidn. to a blue dication with an intense MLCT band at 650 nm occurs at -0.24 V vs. Fc+/0. EPR studies show the effect of the higher spin-orbit coupling const. of the As vs. P atoms through slightly larger g anisotropy as detd. through high frequency measurements. [on SciFinder(R)]},
added-at = {2022-06-15T11:26:56.000+0200},
author = {Ye, Shengfa and Kaim, Wolfgang and Sarkar, Biprajit and Schwederski, Brigitte and Lissner, Falk and Schleid, Thomas and Duboc-Toia, Carole and Fiedler, Jan.},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2ca8460ff63c83ae8958b5657e487796a/huebleriac},
doi = {10.1016/S1387-7003(03)00216-8},
interhash = {13dcb45df3fb3d10ae6d1ef20398b538},
intrahash = {ca8460ff63c83ae8958b5657e487796a},
issn = {1387-7003},
journal = {Inorganic Chemistry Communications},
keywords = {arsine complex complex;ESR complex;electrochem copper prepn pyridyltetrazine redox structure structure;crystal},
number = 9,
pages = {1196--1200},
timestamp = {2022-06-15T09:26:56.000+0200},
title = {First crystal structure determination and high-frequency EPR study of an organoarsanecopper radical complex},
volume = 6,
year = 2003
}
