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

In the title compound, {(C5H14N2)[Cd2Cl6]·H2O}n, the asymmetric unit contains one piperazinediium cation, one [Cd2Cl6]2− anion and a water mol­ecule. The coordination geometries of the two Cd2+ cations are distorted octa­hedral. Adjacent CdII atoms are inter­connected alternately by paired chloride bridges, generating polymeric chains parallel to [010]. Neighbouring chains are connected by O—H⋯Cl hydrogen bonds involving the water mol­ecules, forming layers at z = n/2. The crystal packing is further stabilized by inter­molecular N—H⋯Cl and N—H⋯O hydrogen bonds, one of which is bifurcated

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

A 0-dimensional (0D) hybrid compound, (C6H22N4)2H9O4CdCl6CdCl5Cl2 has been prepared by a facile conventional evaporation method. The crystal packing of discrete constituents of [Cd(1)Cl6] octahedra, [Cd(2)Cl5] trigonal bipyramids, Cl– ions, protonated tris(2-aminoethyl)amine molecules ([(C2H7N)3NH]4+) and H9O4+ ions, is stabilized by diverse hydrogen bonds of N-H···Cl, C-H···Cl and C-H···O. Uncommonly, an isolated chlorine ion (i.e. Cl(4)) is fixed at a special position at 12c(3.) by hydrogen bonds from four surrounding hydrogen atoms at a trigonal pyramidal configuration whereas other chlorine atoms Cl(1), Cl(2) and Cl(3) are stabilized by hydrogen bonds from 2, 2 and 3 hydrogen atoms at bifurcated, linear and trigonal configurations, respectively. The ordered arrangement of [Cl(4) [Cl(4)···H4] trigonal pyramidal configuration upward or downward is responsible for the long c-axis of the title compound. Additionally, a H9O4+ ion is entangled with symmetry restriction and half occupancy. All these features of the title compound add our new knowledge about hydrogen bonds

3-(Ammoniomethyl)pyridinium bis(perchlorate)

In the title molecular salt, C6H10N22+·2ClO4−, the Cl—O bond lengths [anion 1: 1.369 (3)–1.415 (3); anion 2: 1.420 (2)–1.441 (2) Å] and the O—Cl—O angles [anion 1: 105.4 (2)–111.8 (4); anion 2: 107.8 (1)–110.3 (1)°] indicate a slight distortion of the perchlorate anions from regular tetrahedral symmetry. In the crystal, the components are linked into columns along the a-axis direction via N—H...O and C—H...O hydrogen bonds, with stacks of the organic molecules being surrounded by stacks of perchlorate anions

Mina Felicidad (valle de Bardají, Ribagorza)

Este artículo presenta información sobre la mina denominada Felicidad, situada en el valle de Bardají, en las laderas del Turbón. La mina fue trabajada en la Antigüedad y reabierta a finales del siglo XIX. El mineral es una caliza impregnada de metales pesados, especialmente hierro y manganeso.This work presents information about the mine called Feli-cidad, located in the Bardají valley on the slopes of Turbón. The mine was worked in antiquity and reopened at the end of the 19th century. The ore is a limestone impregnated with heavy metals mainly iron and manganese