Effects of Weak Hydrogen-Bonding Interactions on Supramolecular Assemblies of N,N-Dimethyl-1-admantylamine

The reaction of N,N-dimethyl-1-admantylamine (ada) and inorganic acids or trivalent metal chlorides in the hydrochloric acid medium yields four new supramolecular salts, i.e. (adaH(+))(3)center dot(SbCl3)center dot(SbCl4 (-))center dot(SbCl5 (2-)) (1), (adaH(+))center dot(FeCl4 (-)) (2), (adaH(+))center dot(ClO4 (-)) (3), and (adaH(+))center dot(I-3 (-)) (4), respectively. Compound 5, (dtaH(+))(2)center dot(I-3 (-))center dot I- (dta = N,N-dimethyl-2,4,6-trimethylaniline) was also prepared for comparison with 4. Structural analyses reveals that the weak hydrogen-bonding interactions play a crucial role in the formation of various hydrogen-bonding networks. 3D supramolecular architectures are observed in 3, independent 1D infinite hydrogen-bonded chain structures are observed in 1, and discrete structures are observed in 2, 4 and 5. Surprisingly, due to the coexistence of SbCl3, [SbCl4](-) and [SbCl5](2-), compound 1 proves to be a unique example according to the Cambridge Structure Database (CSD). Structural analysis reveals that the weak hydrogen-bonding interactions play a crucial role in the formation of various hydrogen-bonding networks. 3D supramolecular architectures are observed in 3, independent 1D infinite hydrogen-bonding chain structures are observed in 1 and discrete structures are observed in 2, 4 and 5. [GRAPHICS] .