1,4-Bis(1,3-dioxo-2-indenylidene)cyclohexane: polymorphism, gas phase oxidation and enol form mediated radical formation in the solid state†,10.1039/C0CE00509F

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Lactoyl-CoA 全氟丁基戊烷白叶藤碱全氟己基辛烷新白叶藤碱壳寡糖特色专题-生物多肽

1,4-Bis(1,3-dioxo-2-indenylidene)cyclohexane: polymorphism, gas phase oxidation and enol form mediated radical formation in the solid state†

Zofia Urbanczyk-Lipkowska,Przemyslaw Kalicki,Sylwester Gawinkowski,Jacek Waluk,Masashi Yokoyama,Koichi Tanaka

CrystEngComm Pub Date : 11/24/2010 00:00:00 , DOI:10.1039/C0CE00509F

Abstract

Crystallization of 1,4-bis(1,3-dioxo-2-indenylidene)cyclohexane from toluene and dichloromethane solutions afforded yellow photochromic and orange non-photochromic crystals, respectively. In situRaman spectroscopy of the photochromic form revealed the presence of an enol form. Both forms undergo sublimation assisted dehydrogenation under aerobic conditions.