Document Type : Research Paper
Authors
1 University of Anbar - College of Science - Department of Chemistry
2 Basra University - College of Education for Pure Sciences - Department of Chemistry
Abstract
In this study, a new dimers containing a five-member ring heterocyclic were prepared. Three dimers were prepared from terminal acetelynic compounds by the oxidative coupling reaction . All compounds identification by Measured their melting point and by an infrared spectrometer FT-IR. Dimers were also identified by infrared and 1H-NMR spectra. The liquid crystalline properties of the dimers prepared were studied by an optical polarized microscope(OPM) with a Hot Stage and by (DSC). The dimers D1,D2 showed liquid crystalline properties nematic while the daimer D3 did not appears any liquid crystalline phase.
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