STRUCTURE OF ANTHRACENEDIYLIDENE-BIS-(1,3-DITHIOLE) TETRACYANOQUINODIMETHANE BIS(CYANOFORMYL)PHENYL-MALONONITRILE YLIDE MONOHYDRATE - (EXT-TTF2+).TCNQ.(Y-)2.(H2O)

The crystal structure of the title compound is built from four kinds of molecule: one 7,7,8,8-tetracyano-p-quinodimethane [TCNQ: 2,2'-(2,5-cyclohexadiene-1,4-diylidene)bispropanedinitrile]; two 2-[4-(cyanoformyl)phenyl]malononitrile ylides {Y-: 2-[4-(cyanoformyl)phenyl]propanedinitrile ylide}; one extended 2,2',5,5'-tetrathiafulvalenium derivative [Ext-TTF2+: 2,2'-(9,10-anthracenediylidene)-5,5'-dimethyl-4,4'-bis(methylthio)bis(1,3-dithiole) cation] and one water molecule. The Ext-TTF2+ is not planar; the dihedral angle between the planar anthracene group and the two dithiolium rings is 92-degrees; this dication forms chains of monomers along the a axis. The TCNQ and the Y- stack along the b axis. The inter-planar contact between the TCNQ molecule and the Y-anion [3.31 (1) angstrom] is shorter than the one observed between two Y- anions [3.47 (1) angstrom].