%0 Journal Article %1 Frantz.2009 %A Frantz, Stephanie %A Sieger, Monika %A Hartenbach, Ingo %A Lissner, Falk %A Schleid, Thomas %A Fiedler, Jan %A Duboc, Carole %A Kaim, Wolfgang. %D 2009 %J Journal of Organometallic Chemistry %K azobispyridine carbonyl complex complex;EPR complex;cyclic complex;magnetic complex;rhenium crystal halo prepn property rhenium spectra structure voltammetry %N 7-8 %P 1122--1133 %R 10.1016/j.jorganchem.2008.09.034 %T Structure, electrochemistry, spectroscopy, and magnetic resonance, including high-field EPR, of (μ-abpy)[Re(CO)3X]2o/·-, where abpy = 2,2'-azobispyridine and X = F, Cl, Br, I %V 694 %X The neutral compds. anti-(μ-abpy)[Re(CO)3X]2 (abpy = 2,2'-azobispyridine), X = Br (I41/a), I (C2/c), and two cryst. forms of anti-(μ-abpy)[Re(CO)3Cl]2 have been prepd. and characterized using X-ray crystallog., EPR spectra, cyclic voltammetry, and spectroelectrochem. One of the chloride derivs. (P21/c) has been reported before, the other (I41/a), obtained through crystn. in the presence of Zn, is isostructural to the form found for anti-(μ-abpy)[Re(CO)3Br]2. Syntheses of (μ-abpy)[Re(CO)3Cl]2 at high or low temps. yielded different compns., the high temp. procedure led to partial formation of syn/anti mixts. and one-electron reduced species. The same was obsd. to a greater extent in the prepn. of labile syn/anti-(μ-abpy)[Re(CO)3F]2o/·-. The identity of isolated species was investigated using 1H NMR spectroscopy, variable frequency EPR spectroscopy, cyclic voltammetry, UV/vis- and IR-spectroelectrochem. The effects of halide variation on structure, redn. potentials, isomerism and electronic situation are being discussed. [on SciFinder(R)]

@article{Frantz.2009, abstract = {The neutral compds. anti-{(μ-abpy)[Re(CO)3X]2} (abpy = 2,2'-azobispyridine), X = Br (I41/a), I (C2/c), and two cryst. forms of anti-{(μ-abpy)[Re(CO)3Cl]2} have been prepd. and characterized using X-ray crystallog., EPR spectra, cyclic voltammetry, and spectroelectrochem. One of the chloride derivs. (P21/c) has been reported before, the other (I41/a), obtained through crystn. in the presence of Zn, is isostructural to the form found for anti-{(μ-abpy)[Re(CO)3Br]2}. Syntheses of {(μ-abpy)[Re(CO)3Cl]2} at high or low temps. yielded different compns., the high temp. procedure led to partial formation of syn/anti mixts. and one-electron reduced species. The same was obsd. to a greater extent in the prepn. of labile syn/anti-{(μ-abpy)[Re(CO)3F]2}o/·-. The identity of isolated species was investigated using 1H NMR spectroscopy, variable frequency EPR spectroscopy, cyclic voltammetry, UV/vis- and IR-spectroelectrochem. The effects of halide variation on structure, redn. potentials, isomerism and electronic situation are being discussed. [on SciFinder(R)]}, added-at = {2022-06-15T11:26:56.000+0200}, author = {Frantz, Stephanie and Sieger, Monika and Hartenbach, Ingo and Lissner, Falk and Schleid, Thomas and Fiedler, Jan and Duboc, Carole and Kaim, Wolfgang.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/25edd0b5e2c3b33b0b4a97f0b13dcedae/huebleriac}, doi = {10.1016/j.jorganchem.2008.09.034}, interhash = {008a979315b5842945843ae7b35faa90}, intrahash = {5edd0b5e2c3b33b0b4a97f0b13dcedae}, journal = {Journal of Organometallic Chemistry}, keywords = {azobispyridine carbonyl complex complex;EPR complex;cyclic complex;magnetic complex;rhenium crystal halo prepn property rhenium spectra structure voltammetry}, number = {7-8}, pages = {1122--1133}, timestamp = {2022-06-15T09:26:56.000+0200}, title = {Structure, electrochemistry, spectroscopy, and magnetic resonance, including high-field EPR, of {(μ-abpy)[Re(CO)3X]2}o/·-, where abpy = 2,2'-azobispyridine and X = F, Cl, Br, I}, volume = 694, year = 2009 }