, Volume 46, Issue 1, pp 154-158

Molecular and crystal structure of 3-butoxy-4-(1,3,3-trimethyl-2,3-dihydro-1H-2-indolylidenemethyl)-3-cyclobutene-1,2-dione and its thio analog

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Abstract

X-ray investigation of 3-butoxy-4-(1,3,3-trimethyl-2,3-dihydro-1H-2-indolylidenemethyl)-3-cyclobutene-1,2-dione and its thio analog has been carried out. Replacement of the carbonyl oxygen atom by a sulfur atom causes electron density delocalization and equalization of the C-C bonds between the four-and five-membered rings.

Original Russian Text Copyright © 2005 by S. V. Shishkina, V. N. Baumer, O. V. Shishkin, A. L. Tatarets, and L. D. Patsenker
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Translated from Zhurnal Strukturnoi Khimii, Vol. 46, No. 1, pp. 156–160, January–February, 2005.