trans-Diamminebis(1,2-dicyanoethene-1,2-dithiolato)platinum(IV)

Abstract

The title compound, [Pt(C4N2S2)2(NH3)2], represents an octahedral platinum(IV) complex with two trans-ammine and two mnt (mnt = 1,2-dicyanoethene-1,2-dithiolato) ligands. The Pt—N and Pt—S distances are consistent with those in other platinum(IV) complexes. As a result of a slight canting of the coordination of the mnt ligand to the platinum(IV) atom, the nitrile nitrogen atoms are positioned suitably to hydrogen-bond with adjacent ammines.

trans-Bis(4-aminopyridine-κN)bis(quinoxaline-2,3-dithiolato-κ2 S,S′)platinum(IV) dimethyl sulfoxide monosolvate

“…In contrast to the shorter Pt II -S distances in salts of [Pt(mnt) 2 ] 2-(mnt = maleonitriledithiolate), such as 2.295 (2) and 2.2958 (19) A ˚with the tetraphenylphosphine cation (Begum et al, 2014) or 2.290 (2) and 2.282 (2) A ˚with the tetrabutylammonium cation (Gu ¨ntner et al, 1989), the Pt IV -S distances of the title coordination compound are 2.3514 (11) A ˚(Pt1-S1) and 2.3495 (11) A ˚(Pt1-S2). These distances are similar to those in other platinum(IV) complexes containing bis(dithiolene) ligands and either trans-bis(NH 3 ) co-ligands, with Pt-S distances of 2.3434 (8) and 2.3461 (7) A ˚ (Siddiqui et al, 2020), or trans-bis(PMe 3 ) co-ligands, with a Pt-S distance of 2.3619 (8) A ˚ (Chandrasekaran et al, 2014). The Pt1-N1 distance in the title complex is 2.063 (4) A ˚, which is similar to the Pt-N distance of 2.055 (2) A ˚in the aforementioned trans-[Pt(NH 3 ) 2 (mnt) 2 ] complex (Siddiqui et al, 2020).…”

“…These distances are similar to those in other platinum(IV) complexes containing bis(dithiolene) ligands and either trans-bis(NH 3 ) co-ligands, with Pt-S distances of 2.3434 (8) and 2.3461 (7) A ˚ (Siddiqui et al, 2020), or trans-bis(PMe 3 ) co-ligands, with a Pt-S distance of 2.3619 (8) A ˚ (Chandrasekaran et al, 2014). The Pt1-N1 distance in the title complex is 2.063 (4) A ˚, which is similar to the Pt-N distance of 2.055 (2) A ˚in the aforementioned trans-[Pt(NH 3 ) 2 (mnt) 2 ] complex (Siddiqui et al, 2020).…”

“…compound in solution (Geiger et al, 2001;Siddiqui et al, 2020). Light-yellow crystals of the title compound were grown by slow diffusion of water into a dmso solution of the platinum complex.…”