N1-(Thiophen-2-ylmethyl)-N3,N3-bis[3-(thiophen-2-ylmethylammonio)propyl]propane-1,3-diammonium hexafluoridosilicate methanol trisolvate

Abstract

In the title compound, C24H40N4S3 4+·2SiF6 2−·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 SiF6 2− anion bonded via two N—H⋯F inter­actions with the protonated amine group on the middle arm, while two methanol solvent mol­ecules are N—H⋯O hydrogen-bonded with the other secondary protonated amine groups on the side arms. Weak O—H⋯O and O—H⋯F 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).