Synthesis, structure determination and characterization by UV-Vis and IR spectroscopy of bis-(diiso-propyl-ammonium) cis-di-chlorido-bis(oxalato-κ² O ¹,O ²)stannate(IV).

ABSTRACT: The organic-inorganic title salt, (C₆H₁₆N)₂[Sn(C₂O₄)₂Cl₂] or ( ⁱ Pr₂NH₂)₂[Sn(C₂O₄)₂Cl₂], was obtained by reacting bis-(diiso-propyl-ammonium) 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(C₂O₄)₂Cl₂]^2- anion (point group symmetry 2), with the Sn^IV atom in a slightly distorted octa-hedral coordination. The cohesion of the crystal structure is ensured by the formation of N-H⋯O hydrogen bonding between (ⁱPr₂NH₂)⁺ cations and [SnCl₂(C₂O₄)₂]^2- anions. This gives rise to an infinite chain structure extending parallel to [101]. The main inter-chain inter-actions 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.

SUBMITTER: Sarr B 

PROVIDER: S-EPMC6658980 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature