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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Bibliographic Details
Published inOrganometallics Vol. 16; no. 15; pp. 3377 - 3380
Main Authors Huang, Adrian, Marcone, John E, Mason, Kate L, Marshall, William J, Moloy, Kenneth G, Serron, Scafford, Nolan, Steven P
Format Journal Article
LanguageEnglish
Published WASHINGTON American Chemical Society 22.07.1997
Amer Chemical Soc
Subjects
Chemistry
Chemistry, Inorganic & Nuclear
Chemistry, Organic
Physical Sciences
Science & Technology
REACTIVITY
CHEMISTRY
LIGANDS
MOLYBDENUM
COMPLEXES
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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.
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