IR-SPECTROSCOPIC AND THERMAL PROPERTIES OF THE COMPLEX COMPOUND OF OXYGEN-CONTAINING IONITE WITH d-METALS

The possibilities of using nanocomposite material µ-methoxo (copper (II), bismuth (III)) acetylacetonate (I), the following composition: Cu3Bi(AA)4(OCH3)5, де HAA = H3C–C(O)–CH2–C(O)–CH3, as a magnetoresistive sensitive element, in a frequency transducer of a magnetic field. In order to create a suitable heterometallic complex compound, a method for its synthesis was developed. The structure, composition and physicochemical properties of the synthesized nanocomposite material were confirmed on the basis of elemental, X-ray phase analyzes, magnetochemical, IR spectroscopic and thermogravimetric studies. According to research, the density of the corresponding material 𝜌=5,659⋅103 g/m3, the mass of one molecule 𝑚0 = 157,837⋅10−26 kg, the number of valence electrons 𝑁=1450,715⋅1019, which made it possible to calculate the concentration of charge carriers at a temperature of 323 K: 𝑛=82.1⋅1028 m−3. The study of the electrical properties of µ-methoxo (copper (II), bismuth (III)) acetylacetonate in compressed form in the temperature range 323 - 393 K showed that with increasing temperature, its resistivity drops sharply from 8·107 to 70 Ohm·cm, which is typical for semiconductor materials. Based on these data, the band gap 𝛥𝛦 = 2.18 eV was determined. Calculations have shown that this material is a semiconductor, with current carriers of both signs. The dependence of the concentration of charge carriers on the temperature is obtained. The model of the frequency transducer, on the basis of the autogenerator from bipolar to field-effect transistors is considered. Simulation of this scheme was performed in the program LTspice XVIII. Based on this model, the I – V characteristics of this transducer, the dependence of the current, voltage and frequency of the output signal when changing the resistance of the magnetically sensitive resistor. The graph of dependence of frequency of an output signal on induction of a magnetic field on the basis of which sensitivity of the given transducer is defined is received

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Crystal structure, synthesis and thermal properties of bis(acetonitrile-κN)bis(4-benzoylpyridine-κN)bis(isothiocyanato-κN)nickel(II)

Acta Crystallographica Section E Crystallographic Communications ◽

10.1107/s2056989019013756 ◽

2019 ◽

Vol 75 (11) ◽

pp. 1685-1688 ◽

Cited By ~ 2

Author(s):

Carsten Wellm ◽

Christian Näther

Keyword(s):

Crystal Structure ◽

Thermal Properties ◽

Hydrogen Bonds ◽

Coordination Polymers ◽

Title Compound ◽

Title Complex ◽

Crystalline Modification ◽

Structure Synthesis ◽

Ir Spectroscopic ◽

Chain Compound

In the crystal structure of the title compound, [Ni(NCS)2(CH3CN)2(C12H9NO)2] or Ni(NCS)2(4-benzoylpyridine)2(acetonitrile)2, the NiII ions are octahedrally coordinated by the N atoms of two thiocyanate anions, two 4-benzoylpyridine ligands and two acetonitrile molecules into discrete complexes that are located on centres of inversion. In the crystal, the discrete complexes are linked by centrosymmetric pairs of weak C—H...S hydrogen bonds into chains. Thermogravimetric measurements prove that, upon heating, the title complex loses the two acetonitrile ligands and transforms into a new crystalline modification of the chain compound [Ni(NCS)2(4-benzoylpyridine)2], which is different from that of the corresponding CoII, NiII and CdII coordination polymers reported in the literature. IR spectroscopic investigations indicate the presence of bridging thiocyanate anions but the powder pattern cannot be indexed and, therefore, this structure is unknown.

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Synthesis and structural-chemical studies of adduct of coordination supramolecular porous polymer hexaaquatribenzene-1,2,4,5- tetracarbonato-tetrairon(iii) with dipyridyl

Journal of Polymer Science and Engineering ◽

10.24294/jpse.v1i2.894 ◽

2018 ◽

Vol 1 (2) ◽

Author(s):

Usubaliyev Beybala Taji ◽

Taghiyev D. B. ◽

Munshiyeva M. K. ◽

Aliyeva G. M. ◽

Aliyeva F. B. ◽

...

Keyword(s):

Complex Compound ◽

Thermal Destruction ◽

Thermal Analyses ◽

Porous Polymer ◽

Chemical Formula ◽

X Ray ◽

Lattice Cell ◽

Chemical Studies ◽

Ir Spectroscopic ◽

First Time

An α, α′-dipyridyl adduct of a complex compound hexaaquatribenzene-1,2,4,5-tetracarbonatotetra iron (III) with porous structure was synthesized for the first time. According to the results of elemental, X-ray, IR-spectroscopic and differential-thermal analyses the individuality, chemical formula, thermal destruction, and form of coordination of acidic anion and dipyridyl were established. During interaction of a complex compound with dipyridyl, it completely loses all crystallization molecule of water resulting in a compound with a chemical formula of Fe4(C6H2(COO)4)3(dpy)2(dipyridyl). Using the identification of diffraction pattern the parameters of lattice cell of the complex compound were determined.

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Synthesis and Structural-chemical Studied of Adduct of Coordination Supramolecular Porous Polymer Hexaaquatribenzene-1,2,4,5- Teacarbonato-tetrairon(iii) with Dipyridyl

Materials Physics and Chemistry ◽

10.18282/mpc.v1i3.583 ◽

2019 ◽

Vol 1 (3) ◽

pp. 23

Author(s):

B. T. Usubaliyev ◽

D. B. Taghiyev ◽

M. K. Munshiyeva ◽

G. M. Aliyeva ◽

F. B. Aliyeva ◽

...

Keyword(s):

Porous Structure ◽

Complex Compound ◽

Thermal Destruction ◽

Thermal Analyses ◽

Porous Polymer ◽

Chemical Formula ◽

X Ray ◽

Lattice Cell ◽

Ir Spectroscopic ◽

First Time

An α, α′-dipyridyl adduct of a complex compound hexaaquatribenzene-1,2,4,5-tetracarbonatotetra iron (III) with porous structure was synthesized for the first time. According to the results of elemental, X-ray, IR-spectroscopic and differential-thermal analyses the individuality, chemical formula, thermal destruction, and form of coordination of acid-ic anion and dipyridyl were established. During interaction of a complex compound with dipyridyl, it completely loses all crystallization molecule of water resulting in a compound with a chemical formula of Fe4(C6H2(COO)4)3(dpy)2 (dipyridyl). Using the identification of diffraction pattern the parameters of lattice cell of the complex compound were determined.

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