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    Ethyl 2-[2-(4-hydroxy-3-methoxybenzylidene)hydrazin-1-ylidene]-3,4-dimethyl-2,3-dihydro-1,3-thiazole-5-carboxylate
    (Int Union Crystallography, 2012) Yildirim, Sema Ozturk; Butcher, Ray J.; Koysal, Yavuz; Kantar, Esen Nur; Belder, Ayse
    The title compound, C16H19N3O4S, is almost planar, with a dihedral angle of 2.88 (9)degrees between the mean planes of the benzene and thiazole rings. The molecule adopts an E conformation about the two C = N bonds, with a C-N-N- C torsion angle of -177.01 (11)degrees. An intramolecular CH center dot center dot center dot O hydrogen bond exists between a thiazole methyl group and the formic acid ethyl ester carbonyl O atom. In the crystal, molecules are linked by O-H center dot center dot center dot O hydrogen bonds, forming chains propagating along [210]. The chains are linked via CH center dot center dot center dot O hydrogen bonds with R-2(2) (12) ring motifs, forming sheets lying parallel to (122). The sheets are further linked through out-of-plane C-H center dot center dot center dot N hydrogen bonds with R-2(2) (12) ring motifs and C-H center dot center dot center dot pi nteractions, forming an interesting three-dimensional supramolecular architecture.
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    Novel phthalocyanines containing substituted salicyclic hydrazone-1,3-thiazole moieties: Microwave-assisted synthesis, spectroscopic characterization, X-ray structure and thermal characterization
    (Elsevier Sci Ltd, 2010) Degirmencioglu, Ismail; Atalay, Esra; Er, Mustafa; Koysal, Yavuz; Isik, Samil; Serbest, Kerim
    Novel, metal-free and metallo(Cu, Co, Ni, Zn, Pb and Mn)phthalocyanine compounds were synthesized by exposure to microwave irradiation and the products purified. The newly prepared compounds were characterized using elemental analyses, IR, H-1/C-13 NMR, H-1-H-1 COSY measurements, MS, UV-vis spectroscopy and DTA/TG analysis. The electronic spectra exhibited an intense pi -> pi* transition with characteristic Q and B bands of the phthalocyanine core, as expected. All decomposition products obtained from DTA/TG analysis were identified: it was found that the thermal stability of each phthalocyanine compound followed the order: MnPc < Metal-free < ZnPc < PbPc < CuPc < CoPc < NiPc. (C) 2009 Elsevier Ltd. All rights reserved.