Abstract
Two tetraalkylammonim salts and a dihydrate of 4,4′-dihydroxybenzophenone (DHBP) have been prepared and characterized by X-ray crystallography. In [(CH3)4N](C13H9O3) (1), the DHBP- anions pack to form two-dimensional puckered, hydrogen-bonded layers via O–H···O− hydrogen bonds between the hydroxyl groups. Comparatively, in [(C2H5)4N]2(C13H8O3)·10H2O, the DHBP2− anions act as proton acceptors to link ten water molecules generating two-dimensional planar hydrogen-bonded layers. The tetraalkylammonium cations are located between the hydrogen-bonded layers. Additionally, weak C–H···O hydrogen bonds between the anions and cations are present. The DHBP molecules in 3 ((C13H10O3)·2H2O) are linked to the water molecules forming a three-dimensional hydrogen-bonded network by conventional O–H···O hydrogen bonding. Additionally, theoretical calculations were performed to explore the structural differences among the materials and the results were compared with the corresponding crystal structures.
Graphical Abstract
Two tetraalkylammonim salts and one dihydrate of 4,4′-dihydroxybenzophenone (DHBP) have been prepared and characterized by X-ray crystallography. The hydrogen bonding of the structures is presented.
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Support from the Young Teacher’s Processing Program of Northwest Normal University (NWNU-LKQN-13-19) is gratefully acknowledged.
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Li, Hy., Wu, Jf., Yang, Y. et al. Crystal Structures of Two Tetraalkylammonium Salts and One Dihydrate of 4,4′-Dihydroxybenzophenone. J Chem Crystallogr 45, 44–50 (2015). https://doi.org/10.1007/s10870-014-0562-y
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DOI: https://doi.org/10.1007/s10870-014-0562-y