Abstract
The structure of the title non-centrosymmetric organic-inorganic hybrid salt, (C8H12NO)2[ZnCl4], consists of two 4-meth-oxy-benzyl-ammonium cations sandwiched between anionic layers, formed by isolated tetra-chlorido-zincate tetra-hedra. The double layers extend parallel to the ac plane. The crystal packing is assured by Coulombic inter-actions and by a complex N-H⋯Cl and C-H⋯Cl hydrogen-bonding system mostly involving the positively charged ammonium groups and the chloride ligands of the isolated tetra-hedral [ZnCl4](2-) units. One of the methyl-ene-ammonium groups is disordered over two sets of sites in a 0.48 (2):0.52 (2) ratio. The crystal investigated was twinned by non-merohedry with a twin component ratio of 0.738 (2):0.262 (2).
Highlights
Laboratoire des Sciences des Matériaux et d’Environnement, Faculté des Sciences, Université de Sfax, BP 1171, Route de Soukra, 3018 Sfax, Tunisia, bUnité de Recherche, Catalyse et Matériaux pour l’Environnement et les Procédés, URCMEP
The structure of the title non-centrosymmetric organic–inorganic hybrid salt, (C8H12NO)2[ZnCl4], consists of two 4-methoxybenzylammonium cations sandwiched between anionic layers, formed by isolated tetrachloridozincate tetrahedra
The crystal packing is assured by Coulombic interactions and by a complex N—H Cl and
Summary
Non-linear optical (NLO) materials have received much attention in different research areas due to their potential applications in high-density optical data storage, electrooptical shutters, optical communication and signal processing (Maury & Le Bozec, 2005; Green et al, 2011; Evans & Lin, 2002). Organic–inorganic hybrid materials showing non-centrosymmetric structures started gaining attention in the field, since they are expected to offer enhanced properties, such as second harmonic generation efficiency, by combining the characteristic features of both organic and inorganic moieties. These materials are usually constituted by the crystal packing of inorganic anions (typically halogenidometalates) and organic ammonium cations ensured by hydrogen bonds and Coulombic interactions (Brammer et al, 2002). This salt crystallizes in a non-centrosymmetric space group and could be a potential candidate for second order non-linear optical properties
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