Di-propyl-ammonium 4-amino-benzene-sulfonate.

In the title mol-ecular salt, NH(CH) ·[NHCHSO], the cation displays an extended conformation. In the crystal, anion-to-anion N-H⋯O and N-H⋯(O,O) hydrogen bonds generate (101) layers. Cation-to-anion N-H⋯O hydrogen bonds connect the layers into a three-dimensional network.

Environmental impact of tsetse eradication in Senegal.

The sterile insect technique is an environment friendly control tactic and is very species specific. It is not a stand-alone technique and has been used mostly in combination with other control tactics within an area-wide integrated pest management strategy. For a period of eight years, the direct impact of a campaign to eradicate a population of the tsetse fly Glossina palpalis gambiensis in Senegal was monitored using a set of fruit-feeding insect species (Cetoniinae and Nymphalidae) that served as ecological indicators of the health of the ecosystem.

Synthesis and crystal structure of a new hybrid organic-inorganic material containing neutral mol-ecules, cations and hepta-molybdate anions.

The title compound, hexa-kis-(2-methyl-1-imidazol-3-ium) hepta-molybdate 2-methyl-1-imidazole disolvate dihydrate, (CHN)[MoO]·2CHN·2HO, was prepared from 2-methyl-imidazole and ammonium hepta-molybdate tetra-hydrate in acid solution. The [MoO] hepta-molybdate cluster anion is accompanied by six protonated (CHN) 2-methyl-imidazolium cations, two neutral CHN 2-methyl-imidazole mol-ecules and two water mol-ecules of crystallization. The cluster consists of seven distorted MoO octa-hedra sharing edges or vertices.

Synthesis, structure determination and characterization by UV-Vis and IR spectroscopy of bis-(diiso-propyl-ammonium) -di-chlorido-bis(oxalato-κ , )stannate(IV).

The organic-inorganic title salt, (CHN)[Sn(CO)Cl] or ( PrNH)[Sn(CO)Cl], was obtained by reacting bis-(diiso-propyl-ammonium) oxalate with tin(IV) chloride dihydrate in methanol. The Sn atom is coordinated by two chelating oxalate ligands and two chloride ions in positions, giving rise to an [Sn(CO)Cl] anion (point group symmetry 2), with the Sn atom in a slightly distorted octa-hedral coordination. The cohesion of the crystal structure is ensured by the formation of N-H⋯O hydrogen bonding between (PrNH) cations and [SnCl(CO)] anions.

Crystal structure of bis-(diiso-propyl-ammonium) molybdate.

The organic-inorganic title salt, (CHN)[MoO] or ( PrNH)[MoO], was obtained by reacting MoO with diiso-propyl-amine in a 1:2 molar ratio in water. The molybdate anion is located on a twofold rotation axis and exhibits a slightly distorted tetra-hedral configuration. In the crystal structure, the diiso-propyl-ammmonium ( PrNH) cations and [MoO] anions are linked to each other through N-H⋯O hydrogen bonds, generating rings with (36) motifs that give rise to the formation of a three-dimensional network.