In the title hydrated salt, C7H9ClN+·Cl−·0.5H2O, the water O atom lies on a crystallographic twofold axis. In the crystal, the monoprotonated 4-chlorobenzylammonium cation forms N—H⋯Cl and N—H⋯O hydrogen bonds and the water molecule forms O—H⋯Cl hydrogen bonds, generating layers lying parallel to the bc plane.
Co 0.50 H 6 NaO 9 P 2 , monoclinic, P12 1 /m1 (no. 11), a = 8.034 (2)
Source of materialAn aqueous solution of diphosphoric acid H 4 P 2 O 7 was first obtained by passing a solution of Na 4 P 2 O 7 (3 g, 11.2 mmol), through an ion exchange resin (Amberlite IR 120) in its H-state. This solution was than added drop by drop to a mixture of cobalt chloride (5.2 mmol) and soduim chloride (11.2 mmol). The obtained solution was slowly evapored at room temperature until crystallization of title compound's crystals.
DiscussionThe crystal structure of a new mixed Na-Co diphosphate, consists of layers built up from the monomeric complex [Co(connected via hydrogen and Na2-O bonds and stacked along [100]. These layers are interconnected via H-bonds of the water molecules (O10 and O11) and the Na1-O bonds, to form a stable three-dimensional network. The Co atom is located on an inversion center and is surrounded by two symmetry related dihydrogendiphosphate anions and two water molecules (O8 and O9), to give a slightly distored CoO 4 (H 2 O) 2 octahedron, with Co-O distances ranging from 2.088(2) Å to 2.130(3) Å. Both crystallographically independent sodium atoms have a sixfold coordination involving two water oxygen atoms and four external oxygen atoms from two H 2 P 2 O 7 phosphates. The Na1-O distances range between 2.532(3) Å and 2.303 (5)
In the title compound, (C8H12N)2[ZnCl4], the Zn2+ ion adopts a distorted tetrahedral coordination geometry. In the crystal, the cations and anions are linked by N—H⋯Cl hydrogen bonds, leading to ribbons propagating parallel to the a axis.
In the title compound, (C8H12N)2[ZnCl4]·2H2O, the Zn atom is coordinated by four Cl atoms in a tetrahedral geometry. The water molecules and the organic cations interact with the [ZnCl4]2− complex anions, building up a two-dimensional hydrogen-bonded network parallel to (100).
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