Bidentate Lewis Base Adducts of Methyltrioxidorhenium(VII): Ligand Influence on Catalytic Performance and Stability

Zhou, M. D.; Jain, K. R.; Gunyar, A.; Baxter, P. N. W.; Herdtweck, E.; Kuhn, F. E.

doi:10.1002/ejic.200900260

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Document type:: Journal Article
Author(s):: Zhou, M. D.; Jain, K. R.; Gunyar, A.; Baxter, P. N. W.; Herdtweck, E.; Kuhn, F. E.
Title:: Bidentate Lewis Base Adducts of Methyltrioxidorhenium(VII): Ligand Influence on Catalytic Performance and Stability
Abstract:: Methyltrioxidorhenium (MTO) forms 1:1 adducts of the general formula CH(3)ReO(3)center dot L(2) with bidentate Lewis bases (L(2) = 5,5'-dimethyl-2,2'-bipyridine, 5,5'-diamino-2,2'-bipyridine, 4,4'-dibromo-2,2'-bipyridine, 5,5'-dibromo-2,2'-bipyridine, diethyl 2,2'-bipyridine-5,5'-dicarboxylate, 1,10-phenanthroline-5,6-dione, 3,6-di(2-pyridyl)pyridazine). Due to the steric demands of the ligands, the complexes display a distorted octahedral geometry as confirmed by solid state X-ray crystallography. The rhenium center is disordered in all examined crystal structures. The complexes synthesized are thermally stable but sensitive to light and moisture. The 2,2'-bipyridine derived complexes exhibit good catalytic activities for cyclooctene epoxidation in a biphasic H(2)O(2)/organic solvent catalytic system using hydrogen peroxide as oxidizing agent. The functional groups on the bipyridine rings play an important role with respect to the differences in formation, stability and activity of the complexes. Their influence depends largely on their electron donor capabilities. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
Congress title:: ISI Document Delivery No.: 474NE Times Cited: 10 Cited Reference Count: 53 Zhou, Ming-Dong Jain, Kavita R. Guenyar, Alev Baxter, Paul N. W. Herdtweck, Eberhardt Kuehn, Fritz E. Jain, Kavita/C-9990-2009; Kuhn, Fritz/A-3113-2010 International Graduate School of Science and Engineering (IGSSE); Bayerische Forschungsstiftung; Bavarian Elite Network NanoCat M. D. Z. thanks the International Graduate School of Science and Engineering (IGSSE) for a Ph.D. grant. K. R. I is grateful to the Bayerische Forschungsstiftung for a Ph.D. grant. A. G. thanks the Bavarian Elite Network NanoCat for financial support. 10 Wiley-v c h verlag gmbh Weinheim «
ISI Document Delivery No.: 474NE Times Cited: 10 Cited Reference Count: 53 Zhou, Ming-Dong Jain, Kavita R. Guenyar, Alev Baxter, Paul N. W. Herdtweck, Eberhardt Kuehn, Fritz E. Jain, Kavita/C-9990-2009; Kuhn, Fritz/A-3113-2010 International Graduate School of Science and Engineering (IGSSE); Bayerische Forschungsstiftung; Bavarian Elite Network NanoCat M. D. Z. thanks the International Graduate School of Science and Engineering (IGSSE) for a Ph.D. grant. K. R. I is grateful to the Bayerische... »
Journal title:: European Journal of Inorganic Chemistry
Year:: 2009
Journal issue:: 20
Pages contribution:: 2907-2914
Fulltext / DOI:: doi:10.1002/ejic.200900260
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