metal-organic compounds
Open access
In the centrosymmetric trinuclear ZnIICaIIZnII title complex, [CaZn2(CH3COO)6(C12H12N2)2], the CaII ion lies on an inversion centre and is octahedrally coordinated by six acetate O atoms. The ZnII ion is coordinated by two N atoms from a bidentate dimethylbipyridine ligand and three O atoms from acetate ligands bridging to the CaII ion, leading to a distorted square-pyramidal coordination sphere. The ZnCa distance is 3.4668 (5) Å.
organic compounds
Open access
In the title compound, C24H40N4S34+·2SiF62−·3CH3OH, the central tertiary amine function is protonated and is connected to three thiophen-2-ylmethylamino-n-propyl groups, forming the arms of a T-shaped cation that has two pockets. Each arm contains one protonated secondary amine function, and each pocket is occupied by one SiF62− anion bonded via two N—HF interactions with the protonated amine group on the middle arm, while two methanol solvent molecules are N—HO hydrogen-bonded with the other secondary protonated amine groups on the side arms. Weak O—HO and O—HF hydrogen bonds between the solvent molecules and between the solvent molecules and the anions, respectively, are also observed. All three thiophene groups in the arms are disordered over two sets of sites, with occupancy ratios of 0.828 (3):0.172 (3), 0.910 (2):0.090 (2) and 0.890 (3):0.110 (3).