Crystal and molecular structure of 1-(trimethylsilylmethyl)benzotriazole

The crystal and molecular structure of 1-(trimethylsilylmethyl)benzotriazole has been established by X-ray diffraction (XRD) analysis. The coordination polyhedron of the silicon atom in this molecule is a tetrahedron. The bond lengths and angles of the 1-(trimethylsilylmethyl)benzotriazole molecule were compared with those of related crystal structures.     

Triethanolammonium salts of biologically active carboxylic acids

Triethanolammonium salts (protatranes) of biologically active carboxylic acids (nicotinic, cinnamic, benzoic, salicylic, oxalic, malonic, succinic, malic, citric) were synthesized in yields exceeding 90%. The structure of the synthesized compounds was studied by IR spectroscopy and X-ray diffraction analysis.     

Alkylation of cyclic mannich bases,derivatives of thiourea and simple amino acids

Aminomethylation of thiourea with aqueous formaldehyde and simple amino acids (glycine, β-alanine, γ-aminobutyric acid) have resulted in the formation of (4-thioxo-1,3,5-triazinan-1-yl)-substituted acetic, propionic, and butyric acids, respectively. By alkylation of these compounds corresponding S-methyl and S-ethyl iodides were obtained, and by the action of tert-butylamine, the corresponding salts. The same salts were obtained by the reaction of amine exchange between 5-tert-butyl-1,3,5-triazinan-2-thione and these amino acids in water. As a result of neutralization of S-methyl iodides with tert-butylamine in 2-propanol or aqueous 2-propanol zwitterionic [4-(methyl-sulfanyl)-3,6-dihydro-1,3,5-triazin-1(2H)-yl] derivatives of these acids were isolated. From aqueous solutions of S-methyl iodides and tert-butylamine ion associates of the corresponding zwitter-ions and tert-butylammonium iodide have crystallized. The same associates have formed at treating S-methyl iodides with tert-butylamine or diethylamine in the absence of a solvent.     

Crystal and molecular structure of 1-(3-ammoniopropyl)silatrane chloride

By single crystal X-ray diffraction the crystal and molecular structure of 1-(3-ammoniopropyl)silatrane chloride (I) is determined. One of three cations in the asymmetric unit of the crystal of I differs from the other two by the length of the coordination N → Si bond. The opposite electronic effects in two geometrically similar cations are transferred inductively through a three-carbon chain.     

Aminomethylation of Symmetric Dialkylthioureas with Formaldehyde and Amino Acids

Russian Journal of General Chemistry - Condensation of 1,3-dialkylthiourea, formaldehyde, and terminal amino acids (C2, C3, or C4) taken in the 1 : 2 : 1 molar ratio has afforded the terminally...     

Crystal and molecular structure of N-(1-silatranylmethyl)benzimidazole

The crystal and molecular structure of N-(1-silatranylmethyl)benzimidazole was established by X-ray diffraction. The coordination polyhedron of the silicon atom in this molecule is a trigonal bipyramid. The bond lengths and angles of the N-(1-silatranylmethyl)benzimidazole (SMBI) molecule are compared with the corresponding values for other derivatives of this heterocycle. The silatranylmethyl group, having a high electron-donor inductive effect, does not increase the total aromaticity of the SMBI molecule.     

Reaction of Tris(2-hydroxyethyl)amine with Iron(III) and Manganese(II) Salts

Russian Journal of General Chemistry - The reaction of tris(2-hydroxyethyl)amine with Fe(III) and Mn(II) carboxylates was studied for the first time. The complexes formation was confirmed by the IR...     

Crystal Structure of New Compound of Platinum: PtLa6(La9,Sr3)(Pt0.9Сu0.1)4O42

Crystallography Reports - The crystal structure of new oxide PtLa6(La9Sr3)(Pt0.9Сu0.1)4O42 is a three-dimensional framework, formed by chains of regular octahedra Pt1 and nine-vertex...     

Synthesis and characterization of cobalt(II) complexes with triethanolamine and succinate and/or nitrate anions

Three Co(II) complexes of triethanolamine (TEA) namely [Co(N(CH₂CH₂OH)₃)₂](NO₃)₂ (1), [Co(N(CH₂CH₂OH)₃)₂](OOC(CH₂)₂COO) (2) and [Co₂(N(CH₂CH₂OH)₃)₂(NO₃)₂(OOC(CH₂)₂COO)] (3) were synthesized and characterized by physicochemical and spectroscopic methods. The first two complexes are cationic and are formed by Co²⁺ cations coordinated by two TEA ligands plus nitrate or succinate anions, respectively. The equilibrium geometries of the [Co(TEA)₂]²⁺ cations have been optimized at the B3LYP/cc-pVDZ level. Complex 3 is a product of the reaction between cationic complexes 1 and 2.