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Titolo:
SYNTHESIS OF LANTHANIDE COMPLEXES COORDINATED BY AN ASYMMETRIC CYCLOPENTADIENYL LIGAND
Autore:
TRIFONOV AA; VANDEWEGHE P; COLLIN J; DOMINGOS A; SANTOS I;
Indirizzi:
UNIV PARIS 11,ICMO,URA 1497,LAB SYNTHESE ASYMETR F-91405 ORSAY FRANCE UNIV PARIS 11,ICMO,URA 1497,LAB SYNTHESE ASYMETR F-91405 ORSAY FRANCE ITN,DEPT QUIM P-2688 SACAVEM PORTUGAL
Titolo Testata:
Journal of organometallic chemistry
fascicolo: 1-2, volume: 527, anno: 1997,
pagine: 225 - 237
SICI:
0022-328X(1997)527:1-2<225:SOLCCB>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIELS-ALDER REACTIONS; RAY CRYSTAL-STRUCTURE; LN; ORGANOLANTHANIDE COMPLEXES; NITROALDOL REACTION; ORGANIC-SYNTHESIS; LEWIS-ACID; MOLECULAR-STRUCTURE; BINOL COMPLEXES; EFFICIENT SYNTHESIS;
Keywords:
SAMARIUM; LANTHANUM; CYCLOPENTADIENYL; CHIRALITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
94
Recensione:
Indirizzi per estratti:
Citazione:
A.A. Trifonov et al., "SYNTHESIS OF LANTHANIDE COMPLEXES COORDINATED BY AN ASYMMETRIC CYCLOPENTADIENYL LIGAND", Journal of organometallic chemistry, 527(1-2), 1997, pp. 225-237

Abstract

The synthesis and characterization of bis- and monocyclopentadienyl lanthanide iodides [(S)-Cp'](2)LnI (Ln = Sm, 3; Ln = La, 4) and (S)-Cp'LnI(2)(THF)(n), (Ln = Sm, n = 3, 5; Ln = La, n = 2, 6) coordinated by an asymmetric cyclopentadienyl ligand (Cp' = C5H4CH2CH(CH3)OCH(2)Ph) have been carried out. Variable-temperature NMR study of compounds 3 and 4 reveals a fluxional process in solution. The X-ray crystal structure analysis of 3 shows a bent metallocene structure with intramolecular coordination to the oxygen atoms of the side chains of both cyclopentadienyl ligands. For monocyclopentadienyl complexes, intramolecular coordination is observed only for the lanthanum complex 6. All compounds exhibit activity for the catalysis of Diels-Alder reactions.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 18:33:42