title: A mixed crystal of imperatorin and phellopterin, with C--H...O, C--H...pi and pi-pi interactions.
abstract: The crystal structure of 9-(3-methylbut-2-enyloxy)-7H-furo[3,2-g]chromen-7-one-4-methoxy-9-(3-methylbut-2-enyloxy)-7H-furo[3,2-g]chromen-7-one (0.926/0.074), 0.926C(16)H(14)O(4)*- x 0.074C(17)H(16)O(5), is characterized by two independent imperatorin molecules in the asymmetric unit, which exhibit different side-chain conformations. A small amount of phellopterin overlaps with one of the two imperatorin molecules. The supramolecular structure is supported by C--H...O, C--H...pi and pi-pi interactions.
authors.affiliation: School of Pharmacy, The Robert Gordon University, Aberdeen, Scotland. p.j.cox@rgu.ac.uk
authors.forename: Philip J
authors.initials: PJ
authors.lastname: Cox
authors.forename: Marcel
authors.initials: M
authors.lastname: Jaspars
authors.forename: Yashodharan
authors.initials: Y
authors.lastname: Kumarasamy
authors.forename: Lutfun
authors.initials: L
authors.lastname: Nahar
authors.forename: Satyajit D
authors.initials: SD
authors.lastname: Sarker
authors.forename: Mohammad
authors.initials: M
authors.lastname: Shoeb