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A review of the data on the chemical composition and biological activity of species of the genus Bistorta Scop. of the world flora was carried out. It was shown that species of the genus Bistorta were of interest as the source of raw materials containing valuable biologically active compounds – phenolcarbonic acids, flavonoids, triterpenoids, and steroids.

On the territory of oil fields around torches of flared associated petroleum gas, large plumes of aerosol pollution are formed. The method of mapping thermal anomalies and environmental risk of the defeat of plant communities when burning gas in flares was developed based on the space images of Landsat and products of MODIS. We studied the possibility of the application of such maps for ecological monitoring the anthropogenic action on the vegetation of territories oil fields of West Siberia.

Solid solutions Ba₂In₂O_5-0.5yF_y with the structure of brownmillerite are studied by IR and ¹Н MAS NMR spectroscopy. During the fluorine doping the nearest oxygen environment of indium atoms is distorted and a part of In-O bonds is shortened. It is shown that partial fluoride ion substitution for oxygen atoms results in an increase in the proton mobility in hydrated Ba₂In₂O_5-0.5yF_y x nН₂О phases.

A new manganese(III) complex [Mn(L)(NCS)] (1) is synthesized from the Schiff base ligand N,N¢- O -phenylenebis(4-methoxysalicylideneimine) (H₂L: derived from the condensation of 4-methoxy salicylaldehyde with O -phenylene-diamine) with Mn(NO₃)₂×4H₂O and KSCN in a methanol/water solvent mixture. This complex is characterized by elemental analysis, FT-IR and single crystal X-ray diffraction. It crystallizes in a monoclinic system, with space group P 2₁/ c and four molecules in the unit cell ( Z = 4). The crystal structure shows [Mn(L)(NCS)] units joined together by the Mn⋯S secondary bonding interaction (SBI) to form infinite zigzag chain structures.

A new Cd(II) coordination polymer, namely [Cd(pbmb)(mip)] _n (pbmb = 1,1¢-(1,3-propane)bis-(2-methylbenzimidazole), H₂mip = 5-methylisophthalic acid), is hydrothermally synthesized and characterized by elemental analyses, infrared spectroscopy and single crystal X-ray diffraction analyses. It crystallizes in the triclinic space group P , a = 0.2883(11), b = 11.3409(12), c = 13.2519(14) Å, a = 69.6950(10)°, b = 73.5850(10)°, g = 63.8100(10)°, V = 1285.8(2) ų, Z = 2, C₂₈H₂₈CdN₄O₅, M_r = 612.94, D_c = 1.583 g/cm³, m = 0.896 mm^-1. In the complex, adjacent dinuclear units [Cd₂(pbmb)₂] are bridged by mip^2- ligands in the m₂-h², h¹ coordination modes to construct 1D ladder-like chains which are additionally assembled into a 2D supramolecular network via C-H⋯p interactions. Moreover, the luminescence properties of the complex are described.

A new two-dimensional Cd(II) coordination polymer, [Cd(dtb)(CH₃OH)] _n (H₂DTNB = 5,5'-dithiobis(2-nitrobenzoic acid), has been synthesized by solvothermal method, and characterized by elemental analysis, IR and single-crystal X-ray diffraction analysis. The complex crystallizes in the orthorhombic Pbca space group, with a = 15.1365(19), b = 7.6198(10), c = 31.761(4) Å, b = 90°, V = 3663.2(8) ų, Z = 8, Mr = 538.77, D _c = 1.954 g/cm³ and F (000) = 2128. The final R = 0.040 and wR = 0.0866 for 3603 observed reflections with I > 2s( I ). In the complex, the Cd(II) ion is coordinated with six oxygen atoms from four carboxylate groups of distinct DTNB ligands and one methanol molecule. The adjacent Cd centers are interconnected by the flexible carboxylate ligand to form a two-dimensional (2D) structure.

EPR and luminescence methods are used to study diamonds synthesized in the Mg_0.9-Ge_0.1-C system at high pressures and temperatures (HPHT). In the EPR spectra of the Ge doped samples, along with an impurity nitrogen atom (Р1 center) and a silicon-vacancy defect SiV⁰ (KUL1 center) a new paramagnetic center GeV with the spin S = 1 and D _{3 d} symmetry is detected. The studies performed show that this center has the structure of a double half-vacancy in the center of which there is a germanium atom. The observed GeV center is in the neutral charge state and is responsiblefor the 602 nm systems in the photoluminescence spectra.

The structure of two crystalline modifications of [Pb₃(OH)₄Co(NO₂)₃](NO₂)₂ containing tetrahedral [Pb₃(OH)₄Co(NO₂)₃]²⁺ complex cations is studied. Three lead atoms and one cobalt atom are located in the vertices of a distorted tetrahedron with the edges of 3.39-3.92 Å. The distances from the metal atoms to the oxygen atoms belonging to m₃ bridging hydroxo groups are within 1.910-1.956 Å for Co-O and 2.340-2.439 Å for Pb-O. The packing motifs of the crystal structures are analyzed.

The structure of (CH₃)₃Pt(ptac)Py (ptac = (CH₃)₃C(O)CHC(O)CF₃) is determined by single crystal X-ray diffraction at a temperature of 150 K. The crystallographic data are: space group P 2₁/ c , a = 8.5513(2) Å, b = 16.1089(3) Å, c = 14,0877(3) Å, b = 107.4060(10)°, V = 1851.75(7) ų, Z = 4, R = 0.0365. The structure is of the molecular type; the coordination environment of platinum in the molecule is distorted octahedral. The average Pt-O and Pt-CMe distances are 2.149(1) Å and 2.029(5) Å respectively, Pt-N 2.179(2) Å; the chelate angle O-Pt-O = 89.77(8)°. By thermogravimetry the thermal properties of (CH₃)₃Pt(ptac)Py are studied in the condensed phase.

The first coordination polymer containing a [Re₁₂CS₁₄(SO₂)₃(CN)₆]^6- cluster anion is obtained and structurally characterized. The [{Ni(NH₃)₄}₃´{Re₁₂CS₁₄(m-SO₂)₃(CN)₆}]×14H₂O compound (1) is obtained by the reaction of NiCl₂×6H₂O and K₆[Re₁₂CS₁₄(m-SO₂)₃(CN)₆] in a mixture of NH₃/H₂O and CH₃CN. The compound crystallizes in the triclinic space group P -1 with the unit cell parameters: a = 13.1633(4) Å, b = 14.0464(4) Å, c = 20.7198(7) Å, a = 73.660(1)°, b = 83.101(1)°, g = 65.102(1)°, V = 3334.6(2) ų, Z = 2, d _calc = 3.661 g/cm³. The crystal structure is composed of linear polymeric chains located parallel to the b axis and solvate H₂O molecules bound by hydrogen bonds.