Insect pheromones and their analogs

(Z)-hexadec-11-enal and (Z)-hexadec-11-1-yl acetate — components of the sex pheromone of insects of the generaHeliothis andManestra, respectively — have been synthesized by the condensation of undec-10-enal with hex-1-yne, deoxygenation of the heptadec-1-en-12-yn-11-ol formed via the corresponding tosylate to heptadec-1-en-12-yne, and the selective oxonolysis of the latter.Institute of Chemistry, Bashkir Branch, Academy of Sciences of the USSR, Ufa. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 440–444, May–June, 1987.     

Crystal structural study of ternary molybdate LiRbBi2(MoO4)4

Single crystals of the title compound have been synthesized and its crystal structure has been determined. The compound crystallizes in the monoclinic system, space group C2/c, Z = 2 (a = 5.3056, b = 12.976, c = 19.578 Å, = 92.583°, R = 0.029). A distinctive feature of the structure is lacy layers of eight-vertex Bi polyhedra and Mo tetrahedra connected to them via common vertices. me adjacent layen are linked together by ten-vertex Rb polyhedra and Li octahedra.Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences. Buryatian Institute of Natural Sciences, Siberian Branch, Russian Academy of Sciences. Translated fromZhurnal Strukturnoi Khimii, Vol. 34, No. 5, pp. 152–156, September–October, 1993.Translated by T. Yudanova     

Structure of the Z,Z-Germacranolide 1(10)Z,4Z-Hanphyllin

The spatial structure of 1(10)Z, 4Z-hanphyllin has been established by the x-ray method. A new conformation of the ten-membered ring in Z, Z-germacranolides has been found - the₁₅ D ₅,₁ D ₁₄ boat-boat type. The probabilities of the realization of the conformers of this compound and of its C3-epimer have been calculated by the method of molecular mechanics.Institute of Organic Synthesis and Coal Chemistry, National Academy of Sciences of the Republic of Kazakhstan, 470061, Karaganda, ul. 40 let Khazakhstana, 1. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 50–53, January February, 1996. Original article submitted August 14, 1995.     

Chromatographic study of the composition of the essential oil ofZiziphora clinopodioides, a vicarious form ofOriganum vulgare

The chemical composition of the essential oil ofZiziphora clinopodioides has been studied by GLC. A similarity of the qualitative compositions of the terpenoids of the essential oils ofZ. clinopodioides and other species of this genus has been shown.Institute of Phytochemistry, Academy of Sciences of the Republic of Kazakhstan, Karaganda, fax (3212) 51 10 23. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 66–68, January–February, 1999.     

Oxygenated acids of the lipids ofOnopordum acanthium seeds

The structures of the oxygenated fatty acids of the lipids ofOnopordum acanthium L. seeds have been studied by the methods of chemical, chromatographic, and spectral analyses. Triepoxy acids of the C₁₈ series and 24 monohydroxy acids with chain lengths of C₁₄–C₁₈ have been identified, of which the 8-OH-9Z,12Z-18:2 and the 14-OH-9Z,12Z-18:2 acids have been isolated as natural compounds for the first time.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 515–518, July–August, 1993.     

Complex X-ray diffraction study of yttrium(III) dipivaloyl methanate

Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences. Translated fromZhurnal Strukturnoi Khimii, Vol. 34, No. 3, pp. 163–165, May–June 1993.     

Molecular structure of 2-dimethylamino-2-thioxo-6-methyl-1,3,2-oxathiaphosphorinane

A. E. Arbuzov Institute of Organic and Physical Chemistry, Russian Academy of Sciences. Translated fromZhurnal Strukturnoi Khimii, Vol. 34, No. 5, pp. 185–188, September–October, 1993.     

X-ray structural investigation of gossypol and its derivatives XXIX. Molecular and crystal structure of a complex of gossypolic acid lactone with acetic acid

The lactone of gossypolic acid, obtained by the demethylation of the tetramethyl ether of gossypolic acid, forms with acetic acid a stable complex having the 14 composition. The crystallographic parameters of single crystals are as follows:a=20.251(2) Å, b=12.028(3) Å, c=15.934(4) Å, V=3881.2(2.3) ų,Z=4, D _calc=1.32 g/cm³, sp. gr. Pbcn. The molecule is characterized by considerable strain because of the formation of the five-membered lactone ring the atoms of which are coplanar with the atoms of the naphthyl fragment. Unlike the clathrates of racemic gossypol and dianilinegossypol, the gossypolic acid lactone — acetic acid comples does not belong to the type of clathrate inclusion compounds.A. S. Sadykov Institute of Bioorganic Chemistry, Academy of Sciences of the Republic of Uzbekistan, Tashkent, Ul. Akad. Kh. Abdullaeva, 83. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 458–463, July–August, 1999.     

Determination of Mössbauer parameters using multichannel analyzer software

Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences.Translated from Zhurnal Strukturnoi Khimii, Vol. 34, No. 5, pp. 188–190, September–October, 1993.     

Synthesis and crystal structural study of ternary molybdate NaMg3In(MoO4)5

We have synthesized single crystals of a temary molybdate NaMg₃In(MoO₄)₅ and cam'ed out an X-ray structural study (a KM-4 automatic difiactometer, MoK, radiation, 4503 F, R = 0.047). The triclinic unit cell dimensions are a = 7.0476(7), b = 17.935(2), c = 6.9849(7)Å, = 87.650(9), = 100.980(8), = 92.510(9)°, V= 865.5(2) A³, Z = 2, and space group P^–1. The crystal structure involves MoO₄ tetrahedra and (Mg, In)0₆ octahedra forming a three-dimensional framework with Na atoms located in its cavities. The compound melts at 990°C with decomposition.Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences. Institute of Physics, Siberian Branch, Russian Academy of Sciences. Buryatian Institute of Natural Sciences, Siberian Branch, Russian Academy of Sciences. Translated fromZhurnal Strukturnoi Khimii, Vol. 34, No. 5, pp. 147–151, September–October, 1993.Translated by T. Yudanova     

NMR study of mixed-ligand lanthanide complexes. Structure and stoichiometry of cerium subgroup chelates with 18-membered macrocyclic polyethers

Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences. Translated fromZhurnal Strukturnoi Khimii, Vol. 34, No. 3, pp. 156–159, May–June 1993.     

Molecular structure of the reaction product of 1-butyl-1-dibutylboryl-2-diethylphosphino-2-phenylethene with carbon disulfide

Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences. Translated fromZhurnal Strukturnoi Khimii, Vol. 34, No. 3, pp. 165–168, May–June 1993.     

Lipids of the processing wastes from some medicinal plants

The lipid and fatty acid compositions of the wastes arising in the production of drugs fromAralia mandshurica,Digitalis lanata,Glaucia flavum,Ephedra equisetina, andFerula varia have been studied.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, fax (3712) 89 14 75. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 19–23, January–February, 1996. Original article submitted October 23, 1995.     

Crystallochemical experiment: Is it to be planned?

N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences. Translated fromZhurnal Strukturnoi Khimii, Vol. 34, No. 4, pp. 166–167, July–August, 1993.     

Insect pheromones and their analogs. LVIII. Synthesis of hexadeca-7Z,11E-dien-1-yl acetate — a component of the sex pheromones ofPectinophora gossypiella andSitotroga cerealella

A new synthesis of hexadeca-7Z,11E-dien-1-yl acetate — a component of the sex pheromones of the pink bollworm (Pectinophora gossypiella) and the Angoumois grain moth (Sitotroga cerealella) — is proposed that is based on a thermal Claisen rearrangement.Scientific-Research Institute of Small-Tonnage Chemical Products and Reagents, Ufa, fax 8-(3472) 43 17 31. Ufa State Petrotechnical University. Institute of Petrochemistry and Catalysis, Academy of Sciences of the Republic of Bashkortistan, Ufa, fax-8(3472) 31 27 50. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 231–234, March–April, 1998.     

Structure of the dimethylsulfoxide molecule in neutral,acid, and alkaline media

The quantum-chemical SCF LCAO-MO calculations have been carried out in the MNDO/H approximation for the dimethylsulfoxide (DMSO) molecule, its anion [CH ₃ CH ₂ SO]^–, and DMSO adducts with HCL, OH^–, and H₂O. Bond lengths, interbond angles, effective charges on atoms, bond orders, ionization potentials, formation enthalpies, and dipole moments have been calculated. The comparative analysis of quantum-chemical and structural data of the compounds has been carried out.Baikov Institute of Metallurgy, Russian Academy of Sciences. Moscow Mendeleev Chemical Engineering Institute. Translated fromZhurnal Strukturnoi Khimii, Vol. 34, No. 3, pp. 31–35, May–June 1993.Translated by L. Smolina     

Synthesis and molecular structure of 1,4-dimethyl-4,5,7,8-tetrahydro-6H-imidazo[4,5-e][1,4]-diazepine-5,8-dithione

1,4-dimethyl-4,5,7,8-tetrahydro-6H-imidazo[4,5-e][1,4]-diazepine-5,8-dithione was synthesized by boiling 1,4-dimethyl-4,5,7,8-tetrahydro-6H-imidazo[4,5-e][1,4]-diazepine-5,8-dione (a cyclic homolog of theobromine) with P₂S₅. Its molecular and crystal structures were determined by X-ray structure analysis, PMR spectroscopy and the calculations using the MM2 program. The crystals are monoclinic, sp. gr. P2 ₁ /n with a=9.305(4), b=9.464(3), c=11.628(3) Å, -90.49(3)^o, Z=4 for C₈H₁₀N₄S₂. M.p. 268–269 °C. The 7-membered heterocycle has a boat conformation in the crystal, while in solution at room temperature it undergoes interconversion. The geometrical parameters of the molecule obtained by X-ray structure analysis, by PMR spectroscopy below the coalescence temperature (290 K), and by MM2 calculations are in good agreement.A. V. Bogatsky Physico-Chemical Institute, Ukrainian Academy of Sciences. Translated fromZhurnal Struktumoi Khimii, Vol. 34, No. 3, pp. 86–90, May–June 1993.Translated by T. Yudanova.     

Chemical composition of the essential oils ofZiziphora growing under various ecological conditions

It has been established that, in spite of different ecological conditions of the growth of the endemic speciesZiziphora vychodceviana, Z. pedicellata, andZ. persica, they are characterized by identical biosyntheses of terpenoids and differ by the ratio of the main components of their essential oils. Institute of Chemical Sciences, National Academy of Sciences, Republic of Kazakhstan, Alma-Ata. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 727–729, November–December, 1994.     

Organized molecular assemblies as receptor centers of solid state chemical sensors

The paper discusses receptor properties of organized molecular assemblies constructed on the basis of the Langmuir-Blodgett films, modified porous SiO₂ films, and metal-oxide systems.Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences. Translated fromZhurnal Strukturnoi Khimii, Vol. 34, No. 6, pp. 86–89, November–December, 1993.Translated by O. Kharlamova