
TY  - JOUR
A1  - Bowie, JH 
A1  - Gream, GE 
A1  - Laffer, MH 
T1  - Benzene-induced solvent shifts of proton resonances in the N.M.R. spectra of &#945;-diketones
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1968
VL  - 21
IS  - 7
SP  - 1799
EP  - 1805
KW  - 
UR  - https://doi.org/10.1071/CH9681799 
N2  - Solvent shifts [&#916;C6H6 = &#948;CCk4 ? &#948;CCl4 p.p.m.] are recorded for a number of acyclic and cyclic &#945;-diketones. Benzene produces upfield shifts of methyl and methylene resonances in the spectra of saturated acyclic and cyclic &#945;-diketones. The shift of the &#945;-methylene resonance of acyclic a-diketones may be related to the length (and bulk) of the side-chain. The formation of a 1 : 1 complex is proposed, and variable temperature studies (in toluene-ds) have allowed calculation of thermodynamic parameters for an acyclic and a cyclic compound. The dependence of solvent shifts on the position of methyl and hydrogen substituents of aromatic &#945;-diketones has been demonstrated. 
ER  -

