Acta Cryst. (2004). E60, o1460-o1462  [ doi:10.1107/S1600536804018604 ]

Conformations of imperatorin

Atta-ur-Rahman, S. Zareen, M. I. Choudhary, F. Shaheen and M. Parvez

Abstract: The crystal structure of a pure sample of 9-(3-methylbut-2-enyloxy)-7H-furo[3,2-g]chromen-7-one or imperatorin, C₁₆H₁₄O₄, is composed of two independent molecules with different conformations of the 3-methylbutyl group. The structure of an impure sample of imperatorin has already been reported [Cox, Jaspars, Kumarasamy, Nahar, Sarker & Shoeb (2003). Acta Cryst. C59, o520-o522.]

Online 7 August 2004

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