N-PYRROLYL PHOSPHINES - ENHANCED PI-ACCEPTOR CHARACTER VIA CARBOALKOXY SUBSTITUTION

Authors
HUANG A MARCONE JE MASON KL MARSHALL WJ MOLOY KG SERRON S NOLAN SP
Citation
A. Huang et al., N-PYRROLYL PHOSPHINES - ENHANCED PI-ACCEPTOR CHARACTER VIA CARBOALKOXY SUBSTITUTION, Organometallics, 16(15), 1997, pp. 3377-3380
Citations number
27
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
Organometallics → ACNP
ISSN journal
02767333
Volume
16
Issue
15
Year of publication
1997
Pages
3377 - 3380
Database
ISI
SICI code
0276-7333(1997)16:15<3377:NP-EPC>2.0.ZU;2-6
Abstract
A series of 3,4-dicarboethoxy-N-pyrrolyl phosphine ligands (R2P-NC4H2( CO2Et)(2)) is described. A number of techniques, including reaction ca lorimetry, infrared spectroscopy, and X-ray crystallography, demonstra te that these ligands are potent pi-acceptors and that the electronic substituent parameter chi(i) for the 3,4-(EtO2C)(2)C4H2N moiety is ca. 16, placing it in a position between fluorine and chlorine.