Synthesis and thermal study of dual coordination compound of gadolinium (III) and chromium (III)

The paper presents experimental data of thermal studies of coordination compound based on gadolinium nitrate with the DSCmethod; the study was performed in the temperature range from 298 to 1273 C. The thermal analysis has several advantages over the other methods: experimental set up flexibility, fast data receive, automatic data processing, small substance amount. The process of thermal decomposition of the received compound was carried out in both inert and oxidizing environments. During the experiment the temperature was defined, above which heating causes decomposition of the investigated substance and weight loss of the sample

Bis(formato-κO)bis­[1-(pyridin-2-yl)ethanone oxime-κ2 N,N′]nickel(II)

In the title compound, [Ni(HCOO)2(C7H8N2O)2], the Ni atom is six-coordinated by four N atoms from two oxime ligands and by two O atoms from two formate ions in a distorted octa­hedral geometry, with the oxime-N atoms mutually trans. The mol­ecular conformation is stabilized by intra­molecular O—H⋯O hydrogen bonds

Triethyl­ammonium (indane-1,2,3-trione 1,2-dioximato-κ2 N 1,O 2)(indane-1,2,3-trione 2-oximato 1-oxime-κ2 N 1,O 2)nickel(II)

In the title compound, (C6H16N)[Ni(C9H4N2O3)(C9H5N2O3)], the NiIIion is four-coordinated by two N atoms and two O atoms from two indane-1,2,3-trione-1,2-dioxime ligands. The two organic ligands are linked by an intra­molecular O—H⋯O hydrogen bond. In the crystal, mol­ecules are linked by N—H⋯O hydrogen-bonds

Chlorido[1-(pyridin-2-yl)ethanone oximato-κ2 N,N′][1-(2-pyrid­yl)ethanone oxime-κ2 N,N′]copper(II) trihydrate

In the title compound, [Cu(C7H7N2O)Cl(C7H8N2O)]·3H2O, the metal ion is five-coordinated by the N atoms from the 1-(pyridin-2-yl)ethanone oximate and 1-(pyridin-2-yl)ethanone oxime ligands and by the chloride anion in a distorted square-pyramidal geometry. The distortion parameter is 0.192. The two organic ligands are linked by an intra­molecular O—H⋯O hydrogen bond. In the crystal, mol­ecules are linked by O—H⋯O and O—H⋯Cl hydrogen bonds. The title compound is the hydrated form of a previously reported structure [Wu & Wu (2008 ▶). Acta Cryst. E64, m828]. There are only slight variations in the mol­ecular geometries of the two compounds

Лісова політика

У методичних рекомендаціях наведено теоретичні засади та основні поняття лісової політики; принципи, компоненти, цілі, задачі лісової політики; систему інструментів лісової політики; а також методику виконання практичних робіт.Методичні рекомендації упорядковані у співавторстві з колективом кафедри таксації лісу та лісового менеджменту Національного університету біоресурсів і природокористування України (П. Лакида, П. Кравець, О. Павліщук)

Assembly of Near‐Infrared Luminescent Lanthanide Host(Host–Guest) Complexes With a Metallacrown Sandwich Motif

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/87095/1/9834_ftp.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/87095/2/ange_201103851_sm_miscellaneous_information.pd

Mo-doped TiO2 photoanodes using [Ti4Mo2O8(OEt)10]2 bimetallic oxo cages as a single source precursor

Photoelectrochemical solar water splitting is a promising and sustainable technology for producing solar fuels such as clean hydrogen from water. A widely studied photoanode semiconductor for this application is TiO2, but it suffers from a large band gap (3.2 eV) and fast recombination of electrons and holes. Herein, we present a novel, facile and rapid strategy to develop Mo-doped TiO2 (Mo:TiO2) mixed anatase–rutile photoanodes using [Ti4Mo2O8(OEt)10]2 bimetallic oxo cages as a single source precursor. These cages dissolved in tetrahydrofuran deposit by spray pyrolysis at 150 C forming films with hierarchical porosity on the micrometer and nanometer scale. XPS, EDXS and UV-Vis spectroscopy reveal Mo atoms evaporate during annealing in air at temperatures 650–800 C, contributing to the formation of nanostructures and porosity. XPS depth profiling, XRD, EDXS, Raman, and electron paramagnetic resonance indicate that the remaining Mo atoms are well spread and incorporated in the TiO2 lattice, at interstitial or substitutional sites of the rutile or anatase phases depending on the annealing temperature. Photocurrent measurements show that Mo:TiO2 photoanodes optimized at 700 C outperform a TiO2 photoanode prepared in a similar manner by a factor of two at 1.23 VRHE. Finally, UV-Vis spectroscopy, conduction and valence band calculations, and incident-to-photon efficiency measurements show these Mo:TiO2 photoanodes possess a narrower band gap than TiO2 and higher efficiency in the visible light range (5% at 400 nm). These outcomes open a new avenue in the exploitation of titanium oxo cages and advance the development of photoelectrodes for water splitting and energy application