Synthesis and properties of compounds of formamidindium disulfide with d-element tetrahalide anions

Synthesis, molecular and crystal structure of [(NH2)2CSSC(NH2)2]2[RuBr6]Br2·3H2O

“…Oxidation of thiocarbamide in an acidic medium results in the �� 0 -(dithiobisformamidinium) cation {[(NH 2 ) 2 CSSC(NH 2 ) 2 ] 2+ or [S 2 C 2 (NH 2 ) 4 ] 2+ in a simplified form; Preisler & Berger, 1947}. There are only a few examples of compounds containing [S 2 C 2 (NH 2 ) 4 ] 2+ cations described in the literature. For example, direct interaction of compounds with [S 2 C 2 (NH 2 ) 4 ]Cl 2 in concentrated hydrochloric acid produced [S 2 C 2 (NH 2 ) 4 ][MCl 4 ], M = Cu, Co, Zn, Hg (Golovnev et al, 2013), [S 2 C 2 (NH 2 ) 4 ] 2 [Hg 2 Cl 8 ] (Vasiliev et al, 2013) and [S 2 C 2 (NH 2 ) 4 ] 2 [Os IV Cl 6 ]Cl 2 •3H 2 O (Rudnitskaya et al, 2019), while changing the reaction medium to concentrated hydrobromic acid resulted in the formation of [S 2 C 2 (NH 2 ) 4 ][HgBr 4 ] (Golovnev et al, 2013).…”