Synthesis, structure determination and characterization by UV–Vis and IR spectroscopy of bis­(diiso­propyl­ammonium) cis-di­chlorido­bis(oxalato-κ(2) O (1),O (2))stannate(IV)

The organic–inorganic title salt, (C(6)H(16)N)(2)[Sn(C(2)O(4))(2)Cl(2)] or ((i)Pr(2)NH(2))(2)[Sn(C(2)O(4))(2)Cl(2)], was obtained by reacting bis­(diiso­propyl­ammonium) oxalate with tin(IV) chloride dihydrate in methanol. The Sn(IV) atom is coordinated by two chelating oxalate ligands and two chloride ions in cis positions, giving rise to an [Sn(C(2)O(4))(2)Cl(2)](2−) anion (point group symmetry 2), with the Sn(IV) atom in a slightly distorted octa­hedral coordination. The cohesion of the crystal structure is ensured by the formation of N—H⋯O hydrogen bonding between ((i)Pr(2)NH(2))(+) cations and [SnCl(2)(C(2)O(4))(2)](2−) anions. This gives rise to an infinite chain structure extending parallel to [101]. The main inter-chain inter­actions are van der Waals forces. The electronic spectrum of the title compound displays only one high intensity band in the UV region assignable to ligand–metal ion charge-transfer (LMCT) transitions. An IR spectrum was also recorded and is discussed.