Experimental Evidence of Intramolecular CAr-H···O=C Hydrogen Bonds in the Structure of (Diaryl)tetrahydrofuranones Using Spectroscopic Tools. - Semenok, Dmitrii V.; Medvedev, Jury J.; Avdontceva, Margarita S.; Selivanov, Stanislav I.; Sieler, Joachim; Mereshchenko, Andrey S.; Nikolaev, Valerij A. (Helvetica Chimica Acta, 2016)