In the title compound, (C6H9N2)[Cr(C2O4)2(H2O)2]·H2O, the Cr(III) atom adopts a slightly distorted octa-hedral coordination environment defined by two chelating oxalate ligands in the equatorial plane and two water mol-ecules in axial positions. A three-dimensional network is generated by inter-molecular N-H⋯O and O-H⋯O hydrogen-bonding interactions involving the cation, the complex anion and t...

The title compound, [SnCl4(H2O)2]·6H2O, was crystallized according to the solid-liquid phase diagram at lower temperatures. It is built-up of SnCl4(H2O)2 octa-hedral units (point group symmetry 2) and lattice water mol-ecules. An intricate three-dimensional network of O-H⋯O and O-H⋯Cl hydrogen bonds between the complex molecules and the lattice water molecules is formed in the crystal structure.

New 3.3–3.6 μm spectra were obtained of nine young stellar objects embedded in molecular clouds. An absorption feature at ∼3.47 μm (2880 cm) with FWHM∼0.09 μm (80 cm), first identified by Allamandola et al. (1992), was definitively detected toward seven objects, and marginally in the other two. The feature is better correlated with H2O ice than with the silicate dust optical depth in the data o...

The asymmetric unit of the title salt, [Co(C20H14N4S)(H2O)2](NO3)2, comprises a [Co(C20H14N4S)(H2O)2]2+ cation and two NO3- anions. In the complex, [Co(C20H14N4S)(H2O)2]2+ cation, the tetra-dentate 6,6'-sulfanediylbis(2,2'-bi-pyridine) ligand coordinates to the CoII cation in the equatorial positions, while two water mol-ecules occupy the axial positions, forming a compressed octa-hedral CoN4O2...

An experiment on the addition reaction of a D atom (deuteration) to CO on a cold ice surface is performed by deuterium atom exposure of three types of samples (pure solid CO, CO-capped H2O ice, and CO-H2O mixed ice) at 10-20 K. The variation of IR absorption spectra for the samples was measured by a Fourier transform infrared spectrometer during exposure to deuterium atoms. Reactions on pure so...

Context. Absorption of ultraviolet radiation by water ice coating interstellar grains can lead to dissociation and desorption of the ice molecules. These processes are thought to be important in the gas-grain chemistry in molecular clouds and protoplanetary disks, but very few quantitative studies exist. Aims. We compute the photodesorption efficiencies of amorphous water ice and elucidate the ...