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Cyano-stabilized Triphenylphosphonium Ylids by Fernando Castañeda; Clifford A. Bunton; Ricardo Baggio; María Teresa Garland is a Chemistry article available to read on EtoBox.

What is Cyano-stabilized Triphenylphosphonium Ylids about?

Crystalline cyano-stabilized triphenylphosphonium ylids with keto or ester groups give rise to an extended electronic delocalization. In methyl 2-cyano-2-(trimethylphosphonio)ethenoate, Ph3P=C(CN)CO2CH3 or C22H18NO2P, (I), and 1-cyano-1-(trimethylphosphonio)prop-1-en-2-olate, Ph3P=C(CN)CO-CH3 or C22H18NOP, (II), the carbonyl groups are oriented toward the cationoid P atom. Bond lengths and angles, torsion angles and P...O contact distances are consistent with a dominant coplanar conformation where the molecular structures are the result of a balance between intra- and intermolecular interactions. The main interactions presented by cyano-ester (I) and cyano-keto (II) are intramolecular interactions between the carbonyl O and the P atoms. In addition, both compounds show other less important intramolecular interactions between the carbonyl O and phenyl H atoms, which could contribute to form a preferred conformation in the crystal structure.

Who reads Cyano-stabilized Triphenylphosphonium Ylids?

Author

Fernando Castañeda; Clifford A. Bunton; Ricardo Baggio; María Teresa Garland

Publisher

International Union of Crystallography; Blackwell Publishing Inc.; International Union of Crystallography (IUCr); Wiley (ISSN 0108-2701)

Published

2006

Language

EN

Field

Chemistry (Physical Sciences)