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Natural abundance nitrogen‐15 CP‐MAS NMR studies of copper(I) complexes
Author(s) -
Kitagawa Susumu,
Munakata Megumu,
Deguchi Kenzou,
Fujito Teruaki
Publication year - 1991
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/mrc.1260290605
Subject(s) - chemistry , copper , nitrogen , lone pair , phenanthroline , nmr spectra database , metal , abundance (ecology) , crystallography , spectral line , carbon 13 nmr , inorganic chemistry , stereochemistry , molecule , organic chemistry , physics , astronomy , biology , fishery
Natural abundance 15 N CP‐MAS NMR spectra of copper(I) complexes and their ligands, [Cu(biL) 2 ]PF 6 [biL = 1,10‐phenanthroline (phen) and 2,9‐dimethyl‐1,10‐phenanthroline (2,9‐Me 2 phen)], were measured. Coordination shifts of −45 and −44 (average) ppm were obtained for phen and 2,9‐Me 2 phen, respectively, which are attributed to the stabilization of the nitrogen lone‐pair orbital and the involvement of the metal d‐orbital via π‐back‐bonding.