Received 17 October 2013
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).
For background to polyamine-based molecules, see: McKee et al. (2003); Hossain (2008); Mendy et al. (2010). For our previous work on this class of compound, see: Isiklan et al. (2011); Hossain et al. (2011). For related structures, see: Hossain et al. (2012); Pilate et al. (2010).
Data collection: SMART (Bruker, 2007); cell refinement: SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: WM2779 ).
The National Science Foundation is acknowledged for a CAREER award (CHE-1056927) to MAH. The NMR core facility at Jackson State University was supported by the National Institutes of Health (G12RR013459). DNC was supported by the National Institutes of Health (NIH)-Minority Access to Research Careers/Undergraduate Student Training in Academic Research (NIH-MARC/U*STAR) Program (Grant No. 5 T34GM007672-34). The authors thank the National Science Foundation (CHE-0130835) and the University of Oklahoma for funds to acquire the diffractometer used in this work.
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