Rotational strength of the peptide n-π* transitions: equivalence of the ++ and −− quadrants

✍ Scribed by D.F. Mayers; D.W. Urry

• Book ID: 104247273
• Publisher: Elsevier Science
• Year: 1971
• Tongue: French
• Weight: 209 KB
• Volume: 12
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(01)96344-0

✦ Synopsis

The.purpose of this camnunication is to note the adequacy of a quadrant (or an octant) type geanetric dependence for the peptide n-n * transition, when utilizing relatively rigid model systems-&and 5-substituted pyrrolid-2-ones ---and when the vicinal group is the carboxylate or carboxyl moiety (see structure I). The rotational strength of the sodium pyrrolid-2-one-&carboxylate can be calculated from the values for sodium pyrrolid-Z-one-5-carboxylate, when the angular probability functions of the carboxylate enion at positions 4 and 5 in the +t and --quadrants are considered. In a manner consistent with the partial