Conformational dependencies of vicinal carbonyl-nitrogen-carbon-carbon (13C(O)-N-C.alpha.-13C) and carbonyl-nitrogen-carbon-hydrogen (13C(O)-N-C.alpha.-1H) coupling constants in compounds which model the peptide backbone

1H NMR Study of the Conformation of Meta

1H NMR Study of the Conformation of Metallapentacycles N—C—C—O—M [M = Rh(III) and Ir(III)] Resulting in a Karplus-Type Relationship for Vicinal H–C(sp3)–N(sp13)–H Coupling Constants

✍ M. Luisa Jimeno; José Elguero; Daniel Carmona; M. Pilar Lamata; Emilio San José 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 318 KB 👁 2 views

The complete analysis of the 'H NMR spectra of [ (C,Me,)lr(glycinate)CI] and [ (C,Me,)Ir(N-methyl-g1ycinate)Clj provide information for the conformational analysis of the five-membered N-C-C-0-Ir ring. A Karplus relationship has been established for these metallacycles [ 3J(H,H) = 8.9 cos' 4 -1.0 c