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1 H 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(sp 3 )–N(sp 1 3 )–H Coupling Constants
Author(s) -
Luisa Jimeno M.,
Elguero José,
Carmona Daniel,
Pilar Lamata M.,
San José Emilio
Publication year - 1996
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/(sici)1097-458x(199601)34:1<42::aid-omr827>3.0.co;2-9
Subject(s) - chemistry , vicinal , ring (chemistry) , proton nmr , carbon 13 nmr , stereochemistry , crystallography , nmr spectra database , spectral line , organic chemistry , physics , astronomy
The complete analysis of the 1 H NMR spectra of [(C 5 Me 5 )Ir(glycinate)Cl] and [(C 5 Me 5 )Ir( N ‐methyl‐ glycinate)Cl] provide information for the conformational analysis of the five‐membered N—C—C—O—Ir ring. A Karplus relationship has been established for these metallacycles [ 3 J (H,H) = 8.9 cos 2 ϕ‐1.0 cos ϕ+0.8].