hrvatski

Istraživanje vodikovih veza diacetilenskih aromatskih spojeva IR spektroskopijom

Spectroscopic investigation of phenylacetylene revealed its capability of making hydrogen bonds [1]. The extensive analysis of the region of the acetylenic hydrogen stretching enables the determination of its acidity and basicity. Moreover, such study demands the distinguishing interaction contributions from the other anharmonic effects characteristic for acetylenic compounds that occur not only in the mentioned spectral range [2] but also in the region of the acetylenic stretching [3]. Therefore, the hydrogen bond formation is expected in the other aromatic terminal acetylenes and diacetylenes (1-4). The preliminary IR spectra of dissolved compounds indicate exceptional sensitivity on the different hydrogen donor/acceptor solvent abilities. The present discovery of the hydrogen bond formation in crystals is supplemented by the vibrational study of 2, 6-diethynylpyridine [4]. According to these results, further investigation is going to be concerned with the determination of the equilibrium constants of the hydrogen-bonded complexes created by these aromatic diacetylenes and different proton acceptors.

IR spectroscopy; hydrogen bonding; diacetylenes

nije evidentirano