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Assignment of 1 H and 13 C NMR Chemical Shifts of Nitroxanthones and Development of Additivity Rules
Author(s) -
Ibrom W.,
Frahm A. W.
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(199611)34:11<937::aid-omr984>3.0.co;2-#
Subject(s) - chemistry , additive function , chemical shift , heteronuclear molecule , substituent , coupling constant , carbon 13 nmr , ring (chemistry) , stereochemistry , carbon 13 , nitro , computational chemistry , nuclear magnetic resonance spectroscopy , organic chemistry , nuclear physics , mathematical analysis , mathematics , physics , alkyl , particle physics
1 H and 13 C NMR chemical shifts and the homo‐ and heteronuclear coupling constants of 14 nitroxanthones are presented. Specific nitro increments for xanthones depending on substituent position and on the respective ring carbon position and shift additivity rules were developed by means of multiple linear regression analysis.