Bis(1-benzylpiperazine-1,4-diium) hexachloridocadmate(II) dihydrate

Abstract

The asymmetric unit of the title compound, (C11H18N2)2[CdCl6]·2H2O, consists of one 1-benzyl­piperazine-1,4-diium dication, one water mol­ecule and one-half of a [CdCl6]4− anion, located on an inversion centre. The crystal packing is governed by an extensive three-dimensional network of inter­molecular O—H⋯Cl, C—H⋯Cl, N—H⋯O and N—H⋯Cl hydrogen bonds, two of them bifurcated.

Synthesis, Crystal Structure, and Infrared Spectroscopy of a novel hydronium trihydrate hybrid compound: (C6H22N4)2H9O4CdCl6CdCl5Cl2

“…(Table 2), the values of the Cd-Cl bond lengths equal to 2.6441 (9) Å and the Cl-Cd(1)-Cl bond angles average exactly 90.0°, range between 89.06 (3) and 90.94 (3)°. These geometrical parameters, which agree with those found in other compounds [23,24], confirm the close to symmetric octahedral nature of the Cd(1)Cl6 building units [25]. Moreover, for the pentachloridocadmate(II) anion, the structural index τ, namely the Addison parameter τ=(β -α)/60 with α and β being the two largest angles, is zero for an ideal square pyramidal and becomes equal to one for an ideal trigonal bipyramid [26].…”

Crystal structure, spectroscopic and biological study of a new inorganic-organic hybrid compound [Cd4Cl12(H2O)2]n (C10N4H28)n

“…The Cd-Cd shortest distances within the chain, Cd1-Cd2 = 3.773(1) Å, is fairly close to those reported in the case of one-dimensional chain of slightly distorted edge-sharing octahedra [25]. The chains are interconnected by water molecules via O-H⋯Cl hydrogen bonds to form layers parallel to (101) plane (Fig.2).…”

Poly[piperazine-1,4-diium [μ4-chlorido-μ3-chlorido-tri-μ2-chlorido-chloridodicadmate(II)] monohydrate]

“…The Cd-Cl-Cd bridges can thus be regarded as dissymmetric. These distances are longer than the terminal Cd-Cl ones 2.4852 (5) (Cd1-Cl3) and 2.51989 (5) (Cd2-Cl6) A°, which is typical of six coordinated Cd II (El Glaoui et al, 2010).. The Cl-Cd-Cl bond angles average close to 90.0° and range between 81.82 (1)° (for Cl2-Cd1-Cl5) and Cl3-Cd1-Cl4 97.18 (2)°, again confirming the close to octahedral nature of the CdCl 6 building units.…”

“…For the geometry around the Cd II ion, see: Corradi et al (1997Corradi et al ( , 1998; Xia et al (2005); Jian et al (2006); Partin & O Keeffe (1991). For Cd-Cl bond lengths, see: El Glaoui et al (2010). For geometrical features of the organic cation, see: Yin & Wu (2010).…”