1 January 2013
Publication year: 2013
Source:Journal of Crystal Growth, Volume 362
Mixed salts of amino acids with different anions are of considerable interest from chemical and structural points of view and also as a source of new materials the properties of which can be controlled by appropriate choice of anions. Four such crystals, L -His2+·Cl−·HSO4 − (P 21 21 21 , Z =4), L -Arg2+·NO3 −·ClO4 − (δ-form, P 21 , Z =4), L -Arg2+·F−·NO3 − (P 1, Z=2), 2L -Arg2+·(F−⋯HF)·3NO3 − (P 21 21 21 , Z =4), have been characterized structurally and by IR and Raman spectra. The hydrogen bond between the carboxyl group and the fluoride ion (2.371(3)L -Arg2+·F−·NO3 − is among the shortest known O–H⋯F type hydrogen bonds. The O–H⋯F hydrogen bond in the structure of 2L -Arg2+·(F−⋯HF)·3NO3 − is even shorter (2.341(2)
► Four crystalline amino acid salts with different anions have been obtained. ► Molecular and crystal structures were determined by XRD and vibrational spectroscopy. ► Very short O⋯F type H-bonds were found, two shorter than any previously known.
Publication year: 2013
Source:Journal of Crystal Growth, Volume 362