Cocrystals of 2-(2,4,5,7-tetranitrofluoren-9-ylidene)propanedinitrile and 2,4,5,7-tetranitrofluoren-9-one with chlorobenzene

A S Batsanov; I F Perepichka; M R Bryce; J A Howard

doi:10.1107/s0108270101011556

Cocrystals of 2-(2,4,5,7-tetranitrofluoren-9-ylidene)propanedinitrile and 2,4,5,7-tetranitrofluoren-9-one with chlorobenzene

Acta Crystallogr C. 2001 Nov;57(Pt 11):1299-302. doi: 10.1107/s0108270101011556. Epub 2001 Nov 13.

Authors

A S Batsanov¹, I F Perepichka, M R Bryce, J A Howard

Affiliation

¹ Department of Chemistry, University of Durham, South Road, Durham DH1 3LE, England. [email protected]

PMID: 11706256
DOI: 10.1107/s0108270101011556

Abstract

Crystallization of 2,4,5,7-tetranitro-9-(dicyanomethylene)fluorene [DTeF; systematic name: 2-(2,4,5,7-tetranitrofluorene-9-ylidene)propanedinitrile] and 2,4,5,7-tetranitrofluoren-9-one (TeNF) from chlorobenzene in the presence of pi-donor compounds yielded the chlorobenzene solvate, C(16)H(4)N(6)O(8) x C(6)H(5)Cl, and the bis(chlorobenzene) solvate, C(13)H(4)N(4)O(9) x 2C(6)H(5)Cl, respectively. Both structures comprise mixed stacks of twisted fluorene moieties interspersed with nearly parallel chlorobenzene molecules. Solvent-free crystals of DTeF and TeNF were obtained from pure chlorobenzene.