Synthesis,X-Ray Crystal Structure and Spectroscopic Properties of 1,2,3,4-Tetrahydro-2-(thenyl)-3-(N-thenylidine)-4-oxoquinazoline |
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| Authors: | Sumita?Naskar,Subhendu?Naskar,Alexander?J.?Blake,Haregewine?Tadesse,Shyamal?Kumar?Chattopadhyay author-information" > author-information__contact u-icon-before" > mailto:shch@hotmail.com" title=" shch@hotmail.com" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author |
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| Affiliation: | (1) Department of Chemistry, Bengal Engineering and Science University, Shibpur, 711 103, Howrah, India;(2) Department of Applied Chemistry, Birla Institute of Technology, Mesra, 835 215, Ranchi, India;(3) School of Chemistry, The University of Nottingham, University Park, Nottingham, NG7 2RD, UK; |
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| Abstract: | Abstract The Schiff base formed between anthraniloyl hydrazide and thiophen-2-aldehyde is synthesized. Reaction of this Schiff base with VOSO4 in methanol at room temperature does not yield the expected vanadium complex; instead, the Schiff base is transformed to 1,2,3,4-tetrahydro-2-(thenyl)-3-(N-thenylidine)-4-oxoquinazoline, which has been characterized by elemental analyses and by LC–MS, i.r., n.m.r. and electronic spectroscopies. The X-ray crystal structure of the quinazoline product is reported. The compound crystallizes with monoclinic (P21/n) space group, and the cell parameters are: a = 5.9442(7) ?, b = 13.6357(15) ?, c = 19.455(2) ?, β = 90.499(2)°. The oxo-quinazoline product is found to be luminescent when excited at its lowest energy transition. |
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