Recently, the 1,3-bis(2-methoxybenzene)triazene ligand was synthesized and its crystal structure reported.1 Structural and solution studies of a novel tetranuclear silver(I) cluster of this ligand ([AgL]4·THF) have also been reported. 2 In this paper, we report on the synthesis of the [ClHgL] complex of this ligand and discuss the basis of the experimental results, especially the X-ray diffraction data, concerning the crystal and molecular structure of the compound (Fig. 1). The title complex was synthesized as follows: a methanol solution of ligand (0.2573 g, 0.001 mol) was added to a solution of mercury(II) chloride (0.2715 g, 0.001 mol). After mixing for one hour at room temperature, an orange precipitate was formed, filtered and washed with methanol (3 times, each time with 2 ml), and then
In the title compound, [Hg(C16H18N3O2)Cl], the HgII atom is four-coordinated in a tetrahedral geometry by two N atoms from the 1,3-chelating and one O atom of a 1,3-bis(2-ethoxyphenyl)triazenido ligand and one terminal chloride ion. The dihedral angle between the aromatic rings is 1.72 (14)°. In the crystal C—H⋯π stacking interactions occur.
The title compound, C16H19N3O2, exhibits a trans geometry about the N=N double bond in the triazene unit in the solid state, and individual molecules are close to planar with r.m.s. deviations from planarity of 0.065 Å and 0.242 Å for the two independent molecules in the asymmetric unit. Distinct intermolecular N—H⋯N hydrogen bonds lead to the formation of dimers with an R
2
2(8) graph-set motif. The steric demands of the ethoxy groups in the ortho position prevent a coplanar arrangement of the two molecules in the dimers and these instead consist of two interlocked molecules that are related by a non-crystallographic pseudo-twofold rotation axis. Weak C—H⋯π interactions between the CH groups and the aromatic phenyl rings also occur.
The title molecule, C13H11Cl2N3O, is almost planar and adopts a trans conformation with respect to the –N=N– bond; the dihedral angle between the rings is 3.47 (2)°. The N—N bond lengths indicate the presence of single- and double-bond characters and hence the –N=N—NH– moiety. In the crystal, inversion dimers linked by pairs of N—H⋯Cl hydrogen bonds occur, and C—H⋯π and π–π stacking interactions are also observed.
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