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NEW HYDROGENOXALATO ADDUCTS AND MALONATO COMPLEX: SYNTHESIS AND SPECTROSCOPIC STUDIES
No full textTwo new hydrogenoxalato and one malonato adduct and complex have been synthesized and studied by infrared and NMR spectroscopies. The suggested structures are discrete, the hydrogenoxalate behaving as a monodentate ligand or only involved in hydrogen bonding, the environment around the tin (IV) centre being tetrahedral or trigonal bipyramidal. The malonate anion is a monodentate ligand. In all the suggested structures, when extra hydrogen bonds are considered, supramolecular architectures are obtained
MOLYBDATO ORGANOTIN (IV) ADDUCTS AND COMPLEXES: SYNTHESIS AND INFRARED STUDY
No full textNine new molybdato adducts and complexes have been synthesized and studied by infrared spectroscopy. The suggested structures are discrete or infinite chain, the molybdate behaving as a bidentate, mono-, bi- or tetrachelating ligand, the environment around the tin (IV) centre being octahedral or trigonal bipyramidal. In water containing compounds, when extra intermolecular O-H…O or O-H…Cl hydrogen bonds are considered, supramolecular architectures may be obtained
SOME SULFATO ADDUCTS AND DERIVATIVE: SYNTHESIS AND SPECTROSCOPIC STUDY
No full textThree new adducts and derivative have been synthesized and studied by infrared and NMR spectroscopies. The suggested structures are discrete with a sulfate behaving as a monochelating, bichelating or monodentate ligand, the environments around the tin centre being octahedral or pentagonal bipyramidal. In all the studied compounds, proposed supramolecular architectures may be obtained when intermolecular hydrogen bonds are considered
SOME NEW SULFONATO ADDUCT: SYNTHESIS AND SPECTROSCOPIC STUDIES
No full textThree new adducts have been synthesized and studied by infrared and NMR spectroscopies. The suggested structures are discrete with a pyridine -3- sulfonate acting as a tri O-chelating and N-donor or as a non σ coordinating ligand, a 4-aminobenzenesulfonate behaving as a monodentate O-donor, the environments around the tin centre being tetrahedral, octahedral or seven coordinated. In all the studied compounds, supramolecular architectures are obtained when hydrogen bonds are considered
PHOSPHATO AND PHOSPHONATO ADDUCTS: SYNTHESIS AND SPECTROSCOPIC STUDY
No full textTwo new adducts have been synthesized and studied by infrared and NMR spectroscopy. The suggested structures are discrete or of infinite chain type with a phosphate behaving as a bidentate ligand, a phosphonate acting as a monodentate ligand, the environments around the tin centre being tetrahedral or trigonal bipyramidal. In all the studied compounds, supramolecular architectures are obtained when hydrogen bonds are considered
<i>fac</i>-Triaqua(2,2′-bipyridine-κ<sup>2</sup> <i>N</i>,<i>N</i>′)(nitrato-κ<i>O</i>)cobalt(II) chloride
No full textThe asymmetric unit of the title complex, [Co(NO3)(C10H8N2)(H2O)3]Cl, consists of a chloride anion and a complex cation, which is built on a monodentate nitrate anion, three water molecules and one bidentate 2,2′-bipyridine molecule, coordinated to a CoII cation, in a distorted octahedral geometry. The water molecules are arranged in a facial geometry, and serve as donors for hydrogen bonding. Acceptor sites in the crystal are chloride ions and one O atom of the coordinating nitrate ion. A three-dimensional framework is formed, based on O—H...O and O—H...Cl contacts.</jats:p
fac-Triaqua(2,2′-bipyridine-κ2N,N′)(nitrato-κO)cobalt(II) chloride
No full textThe asymmetric unit of the title complex, [Co(NO3)(C10H8N2)(H2O)3]Cl, consists of a chloride anion and a complex cation, which is built on a monodentate nitrate anion, three water molecules and one bidentate 2,2′-bipyridine molecule, coordinated to a CoII cation, in a distorted octahedral geometry. The water molecules are arranged in a facial geometry, and serve as donors for hydrogen bonding. Acceptor sites in the crystal are chloride ions and one O atom of the coordinating nitrate ion. A three-dimensional framework is formed, based on O—H...O and O—H...Cl contacts
Crystal structure of bis(2-methyl-1H-imidazol-3-ium) tetrachloridocobaltate(II)
No full textThe asymmetric unit of the title compound, (C4H7N2)2[CoCl4], consists of two 2-methylimidazolium cations and one tetrahedral [CoCl4]2− anion. The anions and cations interact through N—H...Cl hydrogen bonds to define layers with a stacking direction along [100]. Besides van der Waals forces, weak C—H...Cl interactions between these layers stabilize the crystal packing
Crystal structures of the two salts 2-methyl-1H-imidazol-3-ium nitrate–2-methyl-1H-imidazole (1/1) and 2-methyl-1H-imidazol-3-ium nitrate
No full textThe title salts, C4H7N2+·NO3−·C4H6N2, (I), and C4H7N2+·NO3−, (II), were obtained from solutions containing 2-methylimidazole and nitric acid in different concentrations. In the crystal structure of salt (I), one of the –NH H atoms of the imidazole ring shows half-occupancy, hence only every second molecule is in its cationic form. The nitrate anion in this structure lies on a twofold rotation axis. The neutral 2-methylimidazole molecule and the 2-methyl-1H-imidazol-3-ium cation interact through N—H...N hydrogen bonds to form [(C4H6N2)...(C4H7N2)+] pairs. These pairs are linked with two nitrate anions on both sides through bifurcated N—H...(O,O) hydrogen bonds into chains running parallel to [001]. In the crystal structure of salt (II), the C4H7N2+ cation and the NO3− anion are both located on a mirror plane, leading to a statistical disorder of the methyl H atoms. The cations and anions again interact through bifurcated N—H...(O,O) hydrogen bonds, giving rise to the formation of chains consisting of alternating anions and cations parallel to [100]
Crystal structure of dichloridobis(dimethyl N-cyanodithioiminocarbonate)zinc
No full textThe ZnII atom in the title complex, [ZnCl2(C4H6N2S2)2], is coordinated in a distorted tetrahedral manner by two Cl atoms and two terminal N atoms of two dimethyl N-cyanodithioiminocarbonate ligands. In the crystal, the complex molecules are connected through C—H...Cl hydrogen bonds and Cl...S contacts, leading to a two-dimensional structure extending parallel to the ab plane
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