Chemistry Letters p. 1873 - 1876 (1991)
Update date:2022-08-06
Topics:
Hirano, Masafumi
Miyashita, Akira
Shitara, Hiroaki
Nohira, Hiroyuki
5-Methoxy-3-methyl-6'-nitrospirobenzoselenazolinobenzopyrans have been newly prepared and their reversible structure changes induced by light were characterized by spectroscopic studies.Their stable colored-forms were identified as 5-methoxy-3-methylbenzoselenazolenium-2-trans-(5'-nitrostyryl-2'-oxide) being a zwitterionic structure.
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