Abstract
It was shown by electron absorption spectroscopy and X-ray diffraction analysis that steric strains in photochromic 2-(N-acyl-N-arylaminomethylene) benzo[b]thiophen-3(2H)-one molecules ortho-substituted in the N-phenyl ring increase the quantum yield of the N→O photoinduced rearrangement in accord with an increase in the steric constant of the ortho-substituent.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 10, pp. 2151–2155, October, 2004.
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Dubonosov, A.D., Rybalkin, V.P., Vorob’eva, Y.Y. et al. Structure and photochromism of 2-(N-acyl-N-arylaminomethylene)benzo[b]thiophen-3(2H)-ones. Russ Chem Bull 53, 2248–2252 (2004). https://doi.org/10.1007/s11172-005-0108-8
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DOI: https://doi.org/10.1007/s11172-005-0108-8