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Synthesis of Rhodium Complexes with Novel Perfluoroalkyl Substituted Cyclopentadienyl Ligands
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SYSNO ASEP 0166258 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Synthesis of Rhodium Complexes with Novel Perfluoroalkyl Substituted Cyclopentadienyl Ligands Author(s) Čermák, Jan (UCHP-M) RID, ORCID, SAI
Auerová, Kateřina (UCHP-M)
Nguyen, Huong Thi Thu (UCHP-M)
Blechta, Vratislav (UCHP-M) RID, ORCID, SAI
Vojtíšek, P. (CZ)
Kvíčala, J. (CZ)Source Title Collection of Czechoslovak Chemical Communications. - : Ústav organické chemie a biochemie AV ČR, v. v. i. - ISSN 0010-0765
Roč. 66, č. 2 (2001), s. 382-396Number of pages 15 s. Language eng - English Country CZ - Czech Republic Keywords fluorous biphasic catalysis ; carbonyl complexes ; cyclopentadienes Subject RIV CC - Organic Chemistry R&D Projects GA203/99/0135 GA ČR - Czech Science Foundation (CSF) LB98233 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z4072921 - UCHP-M Annotation Mixtures of isomers of (perfluoroalkyl)tetramethylcyclopenta-1,3-dienes (CH3)4C5H(CF2)nCF3 (n = 3, 5, 7, 9) were synthesized as precursors of new cyclopentadienyl ligands for organotransition metal catalysis in fluorous biphase media and characterized by combination of GC/MS and 13C NMR spectroscopy. Rhodium(III) chloro complexes [Rh{(CH3)4C5(CF2)nCF3}Cl2]2 and rhodium(I) carbonyl complexes [Rh{(CH3)4C5(CF2)nCF3}(CO)2] were prepared from the cyclopentadienes and molecular structure of [Rh{(CH3)4C5(CF2)5CF3}Cl2]2 was determined by X-ray diffraction. The ligands are electronically close to the unsubstituted cyclopentadienyl as shown by values of carbonyl stretching frequencies in the carbonyl complexes. Neither carbonyl frequencies nor NMR chemical shifts of the complexes are substantially affected by the length of the perfluoroalkyl chain. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2002
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