FOX-7 (1,1-Diamino-2,2-dinitroethene): Trapped by Copper and Amines

Syntheses of the first Cu(NH3)2(FOX)2 and various Cu(amine)2(FOX)2 (methyl, propyl, and dimethyl amine) complexes were achieved by using metathetical reactions which add a new chapter to the metal chemistry of FOX-7 (1,1-diamino-2,2-dintroethene). The crystal structures of Cu(NH3)2(FOX)2 and Cu(C3H7NH2)2(FOX)2 which show square planar geometry at copper aid in the understanding of the bonding modes in FOX-7 copper complexes which is supported by natural bond orbital (NBO) calculations. Water-free K-FOX was also structured.