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Chiral iron(II) and cobalt(II) complexes with biphenyl-bridged bis(pyridylimine) ligands : syntheses, structures and reactivities

Chiral iron(II) and cobalt(II) complexes with biphenyl-bridged bis(pyridylimine) ligands : syntheses, structures and reactivities

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Prüfsumme: MD5:3d8d159c109f04a8dc38e10ea19e7280

VEDDER, Christoph, Frank SCHAPER, Hans-Herbert BRINTZINGER, Mika KETTUNEN, Sebastian BABIK, Gerhard FINK, 2005. Chiral iron(II) and cobalt(II) complexes with biphenyl-bridged bis(pyridylimine) ligands : syntheses, structures and reactivities. In: European Journal of Inorganic Chemistry. 2005(6), pp. 1071-1080. ISSN 1434-1948. eISSN 1099-0682. Available under: doi: 10.1002/ejic.200400912

@article{Vedder2005Chira-23698, title={Chiral iron(II) and cobalt(II) complexes with biphenyl-bridged bis(pyridylimine) ligands : syntheses, structures and reactivities}, year={2005}, doi={10.1002/ejic.200400912}, number={6}, volume={2005}, issn={1434-1948}, journal={European Journal of Inorganic Chemistry}, pages={1071--1080}, author={Vedder, Christoph and Schaper, Frank and Brintzinger, Hans-Herbert and Kettunen, Mika and Babik, Sebastian and Fink, Gerhard} }

Babik, Sebastian eng Kettunen, Mika 2005 Schaper, Frank Fink, Gerhard Vedder, Christoph Brintzinger, Hans-Herbert 2013-07-11T08:04:21Z Brintzinger, Hans-Herbert Babik, Sebastian A new class of iron(II) and cobalt(II) complexes with neutral, tetradentate bis(pyridylimine) chelate ligands bridged by a chiral 6,6′-dimethylbiphenyl backbone has been synthesized. Their dihalogen derivatives gave spectral, magnetic and X-ray diffraction results in agreement with a C<sub>2</sub>-symmetric, approximately octahedral geometry with cis-positioned halide ligands and high-spin d-electron configuration. <sup>1</sup>H NMR signals of these paramagnetic complexes were assigned by correlating line widths with reciprocal proton-metal distances. Methyl substitution in 6-position of the pyridyl rings lead to a different, presumably square-pyramidal coordination geometry under dissociation of one chloride ion. FeII dimethyl and diisocyanide derivatives were shown to have low-spin configuration and C<sub>1</sub>-symmetric geometry. With respect to MAO-activated olefin polymerization, significant catalytic activities were reproducibly obtained only under conditions, where the original complex structure was degraded. Kettunen, Mika Schaper, Frank European Journal of Inorganic Chemistry ; (2005), 6. - S. 1071-1080 deposit-license Vedder, Christoph Chiral iron(II) and cobalt(II) complexes with biphenyl-bridged bis(pyridylimine) ligands : syntheses, structures and reactivities Fink, Gerhard 2013-07-11T08:04:21Z

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