Structure Investigation of New Condensation Products of 1,2,3,3-Tetramethylindolenium with Metoxysubstituted Diformylphenols
New spiropyran salts in the row of 1,3,3-trimethylspiro-indoline-2,2'-[2Н]-chromene are prepared and their structures are investigated. Molecular structures of obtained compounds are confirmed by X-ray diffraction and NMR spectroscopy. An open merocyanine isomer is found to be the most stable structure for one of these compounds.
Keywordsspiropyran photochromism molecular switch X-ray diffraction analysis NMR spectroscopy
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- 7.A. Seiiti, K. Hirofumi, and S. Iorietsu. Jpn. Patent Appl. 60-177089; Ref. Zh. Khim., 1N391P. 1987.Google Scholar
- 10.N. E. Gelman, E. A. Terentjeva, T. M. Shanina, and L. M. Kiparenko. Methods of Quantitative Organic Element Analysis [in Russian]. Moscow: Chemistry, 1987,296.Google Scholar
- 11.G. M. Sheldrick. SHELXTL Bruker AXS Inc., Madison, Wisconsin, USA, 2000.Google Scholar