N-Pyrrolyl Phosphines: Enhanced π-Acceptor Character via Carboalkoxy Substitution
A series of 3,4-dicarboethoxy-N-pyrrolyl phosphine ligands (R2P−NC4H2(CO2Et)2) is described. A number of techniques, including reaction calorimetry, infrared spectroscopy, and X-ray crystallography, demonstrate that these ligands are potent π-acceptors and that the electronic substituent parameter χ...
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Published in | Organometallics Vol. 16; no. 15; pp. 3377 - 3380 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
WASHINGTON
American Chemical Society
22.07.1997
Amer Chemical Soc |
Subjects | |
Online Access | Get full text |
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Summary: | A series of 3,4-dicarboethoxy-N-pyrrolyl phosphine ligands (R2P−NC4H2(CO2Et)2) is described. A number of techniques, including reaction calorimetry, infrared spectroscopy, and X-ray crystallography, demonstrate that these ligands are potent π-acceptors and that the electronic substituent parameter χi for the 3,4-(EtO2C)2C4H2N moiety is ca. 16, placing it in a position between fluorine and chlorine. |
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Bibliography: | istex:4DD4D8383AE61856AC4FEC0CB61E65616FD7386F Abstract published in Advance ACS Abstracts, July 1, 1997. ark:/67375/TPS-NZ16TZQH-T |
ISSN: | 0276-7333 1520-6041 |
DOI: | 10.1021/om970129q |