Bis(benzyltrimethylammonium) bis[(4SR,12SR,18RS,26RS)-4,18,26-trihydroxy-12-oxido-13,17-dioxaheptacyclo[14.10.0.03,14.04,12.06,11.018,26.019,24]hexacosa-1,3(14),6,8,10,15,19,21,23-nonaene-5,25-dione] sesquihydrate: dimeric structure formation via [O—H—O]− negative charge-assisted hydrogen bonds (–CAHB) with benzyltrimethylammonium counter-ions
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چکیده
The reaction between bis-ninhydrin resorcinol and benzyl-tri-methyl-ammonium fluoride in ethanol has produced the title compound, 2C10H16N(+)·2C24H13O8 (-)·1.5H2O, which contains a unique centrosymmetric supra-molecular dimeric entity, where two deprotonated ligands are held together via two strong and short [O⋯O = 2.4395 (13) Å] [O-H-O](-) bonds of the type negative charge-assisted hydrogen bonds (-CAHB). The central aromatic rings of the ligands create parallel-displaced π-π stacking at an inter-planar distance of 3.381 (1) Å, which helps stabilize the dimer. In the crystal, two symmetry-related solvent water mol-ecules with a site occupancy of 0.75 are attached to the carbonyl groups of the dimer by weaker O-H⋯O hydrogen bonds, forming chains along [101].
منابع مشابه
(±)-4,12,15,18,26-Pentahydroxy-13,17-dioxaheptacyclo[14.10.0.03,14.04,12.06,11.018,26.019,24]hexacosa-1,3(14),6(11),7,9,15,19,21,23-nonaene-5,25-dione methanol disolvate
The title compound, C24H14O9·2CH3OH, displays a chair-shaped form. The two di-hydro-indenone ring systems are located above and below the central fused-ring system, the dihedral angles between the mean planes of di-hydro-indenone ring systems and the mean plane of central fused-ring system are 67.91 (5) and 73.52 (4)°, respectively. In the crystal, extensive O-H⋯O hydrogen bonds, weak C-H⋯O hyd...
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The title compound, C(24)H(14)O(9)·H(2)O, displays a cup-shaped form. The water mol-ecule is disordered over two set of sites with an occupancy ratio of 0.78:0.22. The mol-ecule of the compound has four stereocenters and corresponds to the SSRR/RRSS diastereoisomer. In the mol-ecule, the maximum dihedral angle between the planar benzene rings is 80.40 (4)°. The H atoms of the hy-droxy groups ar...
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In the title co-crystal, C(16)H(14)N(4)O(2)·2C(7)H(6)O(2), the 3,4-bis-[(pyridin-3-ylmeth-yl)amino]-cyclo-but-3-ene-1,2-dione squareamide mol-ecules assemble into chains along the b axis via N-H⋯O hydrogen bonds. The benzoic acid mol-ecules then hydrogen bond to the pyridine rings via O-H⋯N hydrogen bonds, supported by weaker C-H⋯O hydrogen bonds, forming extended ribbons. The asymmetric unit c...
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