2-{[2,2-Bis(diethylamino)ethan-2-yliumthioyl]sulfanyl}-1,1-bis(diethylamino)ethylium bis(perchlorate)

The title salt, C20H42N4S22+·2ClO4−, was obtained from the reaction of bis(diethylamino)carbeniumdithiocarboxylate, (Et2N)2C2S2, with Fe(ClO4)2·6H2O in CH2Cl2. The title compound, in which one of the S atoms of (Et2N)2C2S2 is bound to a 1,1-bis(diethylamino)ethane moiety, has two carbenium C atoms, and the charge compensation is provided by two perchlorate anions. The N2C—CS2 bond length is 1.512 (4) Å, corresponding to a C—C single bond, and the dihedral angle between N2C– and –CS2 planes [72.0 (2)°] is smaller than that of (Et2N)2C2S2 [82.0 (1)°]. The crystal structure features C—H...S hydrogen bonds.

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