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PMR Study of Molecular Complex Equilibrium in Solution 4‐Substituted Nitrobenzenes with Aromatic Donors
Author(s) -
Lin Shin,
Lin WelChuwan
Publication year - 1977
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.197700017
Subject(s) - chemistry , equilibrium constant , nitrobenzene , cyclohexane , ring (chemistry) , solvent , chemical equilibrium , inert , computational chemistry , spectroscopy , acceptor , organic chemistry , catalysis , condensed matter physics , physics , quantum mechanics
4‐Substituted nitrobenzenes, 4‐X‐C 6 H 4 NO 2 (where X=‐Cl, ‐Br, ‐COCH 2 , ‐CHO), complexed with methyl benzenes in inert solvent cyclohexane have been studied by PMR spectroscopy. Equilibrium constant and the chemical shift of pure complex were determind through observation of the A 2 B 2 spectrum of ring protons in the electron acceptor compounds. Equilibrium constant and chemical shift of pure complex were evaluated separately on the basis of either chemical shift A or B. Unequal chemical shift of pure complex was obtained and used to discuss the geometry of complex.