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Volume :17 Issue : 1 1990      Add To Cart                                                                    Download

Proton NMR studies on teh molecular structure of some Schiff bases

Auther : A.A.H. SAEED

Department of Chemistry, College of Science, Unviersity of Al-Mustansiriyah, Baghdad, Iraq.
 
ABSTRACT
 
The molecular structure of some heterocyclic (Ia-e) and hydroxy-arylidence Schiff bases (IIa-c and IIIa-b) was studied using proton NMR spectometry.  The data indicate that aldimine-H of IIC lies in the deshielding zone of the naphthalene grouping.  This caues the observed downfield shift to lower field (d. 9.40) compared witht hea tof other Schiff abses, whereas the aldimine-Hs of IIIb both lie int he positive shielding zones of the two appositely placed naphthalene rings.  This accounts for the observed upfield chemical shift ( d. 7.82).

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