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77 Se, 13 C and 1 H NMR investigations on ortho ‐carbonyl benzeneselenenyl derivatives
Author(s) -
Llabrès Gabriel,
Baiwir Marcel,
Piette JeanLouis,
Christiaens Léon
Publication year - 1981
Publication title -
organic magnetic resonance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0030-4921
DOI - 10.1002/mrc.1270150208
Subject(s) - chemistry , selenium , nuclear magnetic resonance spectroscopy , spectroscopy , medicinal chemistry , stereochemistry , organic chemistry , physics , quantum mechanics
o ‐Carbonyl benzeneselenenyl compounds with COCH 3 , CHO and COOCH 3 as carbonyl functions and SeCl, SeBr, SeSCN, SeSeCN, SeCN and SeCH 3 as selenium‐containing groups, have been studied by 1 H, 13 C and 77 Se NMR spectroscopy. The IR CO stretching frequencies of these compounds are also reported. If the SeCH 3 derivatives are excluded, the compounds mainly adopt a planar ‘ cis ’ conformation, due to an interaction between the CO group and the selenium atom. The range of over 800 ppm for the observed 77 Se chemical shifts makes 77 Se NMR spectroscopy a powerful tool for physical organic chemists.