Bis[1,3-bis(2,4,6-trimethylphenyl)imidazolium] bis(μ-cis-1,2-diphenylethene-1,2-dithiolato-κ2S,S′:κS)bis[(cis-1,2-diphenylethene-1,2-dithiolato-κ2S,S′)iron(III)] dimethylformamide disolvate

Abstract

The molecular structure of the solvated title salt, (C21H25N2)2[Fe2(C14H10S2)4]·2C3H7NO reveals that the anion is situated on a crystallographic inversion center in the triclinic space group P\overline{1}. The title compound crystallizes utilizing a network of weak π-stacking interactions of phenyl rings pertaining to the dithiolene unit. Moreover, the acidic imidazolium H atoms [N—C(H)—N] display non-classical hydrogen-bonding interactions of the C—H...O type to the oxygen atoms of the N,N-dimethyl formamide solvent, and hydrogen atoms on the backbone of imidazolium rings display weak C—H...S interactions with the dithiolene sulfur atoms.

Keywords

• crystal structure
• imidazolium salt
• iron bis(dithiolene) complexes
• reduced iron bis(dithiolene) complexes