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1.
The TlAs2Se4-Tl3As2Se3Te3 system was studied using differential thermal analysis (DTA), powder X-ray diffraction, microstructure observation, and microhardness
and density measurements. A phase diagram of the title system was constructed. This system is a quasi-binary join of the TlSe-As2Se3-As2Te3 quasi-ternary system. All alloys of the system under standard conditions are prepared in the glassy form. The system has
a eutectic, which contains 50 mol % Tl3As2Se3Te3 and melts at 150°C. The TlAs2Se4-base solid solution in the system extends to 12 mol % Tl3As2Se3Te3, and Tl3As2Se3Te3-based solid solution extends to 20 mol % TlAs2Se4. 相似文献
2.
I. I. Aliev A. A. Farzaliev M. R. Bagieva I. G. Aliev R. S. Magammedragimova Dz. A. Veliev 《Russian Journal of Inorganic Chemistry》2011,56(3):459-462
Alloys in the As2S3-TlAs2S2Se2 section of the As2S3-As2Se3-TlS ternary system were studied and a phase diagram was constructed using physicochemical methods (differential thermal analysis,
microstructural analysis, X-ray powder diffraction, also microhardness and density measurements). The diagram in the As2S3-TlAs2S2Se2 section is a non-quasi-binary diagonal section of the As2S3-As2Se3-TlSe quasi-ternary system. It was found that all the alloys in the section under ordinary conditions are obtained in the
vitreous state. At low As2S3 concentrations in the section, solid solutions form up to 2.5 mol %, and at low TlAs2S2Se2 concentrations, their extent is 3 mol %. 相似文献
3.
I. I. Aliev R. S. Magammedragimova A. A. Farzaliev Dzh. Veliev 《Russian Journal of Inorganic Chemistry》2009,54(4):634-637
The In3As2Se6-In3As2S3Se3 system has been investigated by methods of physicochemical analysis (DTA, X-ray powder diffraction, MSA) and by microhardness
and density measurements. The phase diagram of the system, which is the quasi-binary section of the As-In-S-Se quaternary
system, has been constructed. The region of the In3As2Se6-based solid solutions is extended to 7 mol %, and the In 3As2S3Se3-based region to 15 mol %. A new quaternary compound In6As4S3Se9 is found in the system.
Original Russian Text ? I.I. Aliev, R.S. Magammedragimova, A.A. Farzaliev, Dzh. Veliev, 2009, published in Zhurnal Neorganicheskoi
Khimii, 2009, Vol. 54, No. 4, pp. 691–694. 相似文献
4.
The interaction between the components of the As2S3-TlSe system has been studied using diffeential thermal analysis, powder X-ray diffraction, microstructure examination, and microhardness and density measurements. Two new quaternary compounds, TlAs2S3Se and Tl3As2S3Se3, are formed in the system. Both compounds may be prepared in a glassy state. They melt congruently at 350 and 280°C, respectively. The section As2S3-TlSe is a stable diagonal of the ternary reciprocal system As,Tl ‖ S, Se. The As2S3-base solid solution extends to 1.5 mol % TlSe. The extent of the TlSe-base solution is 5.2 mol % As2S3. Under slow cooling, the glass field in the system extends to 85 mol % TlSe; when the system is quenched to liquid nitrogen, the extent of the glass field is 100 mol % TlSe. 相似文献
5.
T. V. Mikhailichenko L. A. Kalinina Yu. N. Ushakova G. I. Shirokova T. V. Tokareva 《Russian Journal of Electrochemistry》2011,47(5):556-562
The possibility of synthesizing complex sulfide phases in the BaSm2S4-Tm2S3 system has been studied. Tm2S3 solid solutions were obtained with BaSm2S4 (CaFe2O4 structural type). The samples were identified by X-ray diffraction analysis and electron microscopy. The range of the solid
solutions was determined. The total conductance was studied, and the conductance activation energy was calculated for samples
with different dopant contents. The electrolytic properties of basic ternary sulfide and complex sulfide phases in the BaSm2S4-x mol % Tm2S3 system were investigated. A possible mechanism of defect formation was proposed. 相似文献
6.
The interaction in the Tl2Se-Tl4SnSe4-Tl9SbSe6 quasi-ternary system was studied by differential thermal analysis, X-ray powder diffraction analysis, and mathematical modeling. The projection of the liquidus surface and a spatial phase diagram of the system were constructed. It was determined that this system is of the eutectic type with boundary solid solutions based on the initial components. No formation of new intermediate compounds in the quasi-ternary system was detected. 相似文献
7.
The MnS-Pr2S3 phase diagram is of the eutectic type with incomplete solubility based on the starting sulfides (MnS and Pr2S3). The extent of the MnS-based solid solution at 1470 K is 1 mol % Pr2S3. γ-Pr2S3 at 1470 K dissolves 23 mol % MnS, α-Pr2S3 at 1170 K dissolves 6 mol % MnS. The eutectic composition (30 mol % Pr2S3 at 1550 K) coincides with the value calculated from the Schroeder equation for the liquidus branch descending from MnS. A
value of 64 kJ/mol was calculated for the heat of melting of Pr2S3 using the Schroeder equation. 相似文献
8.
F. N. Guseinov K. N. Babanly I. I. Aliev M. B. Babanly 《Russian Journal of Inorganic Chemistry》2012,57(1):100-103
The Pb-Bi-Se system in the PbSe-Bi2Se3-Se-Se composition region was studied by measurement of concentration circuits of the type (−) PbSe(solid) liquid electrolyte,
Pb2+(Pb-Bi-Se)(solid) (+) in the temperature range 300–430 K and by X-ray powder diffraction. A solid-phase equilibrium diagram
was constructed, and the formation was confirmed for the ternary compounds Pb5Bi6Se14, Pb5Bi12Se23, and Pb5Bi18Se32, which belong to the homologous series [(PbSe)5]
m
· [(Bi2Se3)3]
n
. From the emf versus temperature equations, the partial thermodynamic functions [`(DG)]\overline {\Delta G}, [`(DH)]\overline {\Delta H}, [`(DS)]\overline {\Delta S} of PbSe in alloys were calculated. Based on the solid-phase equilibrium diagram from these partial molar quantities using
the corresponding data for PbSe and Bi2Se3, the standard thermodynamic functions of formation and standard entropies of the above ternary compounds were calculated. 相似文献
9.
O. V. Andreev O. Yu. Mitroshin I. A. Razumkova 《Russian Journal of Inorganic Chemistry》2007,52(7):1161-1164
Phase diagrams have been designed for the systems Sc2S3-Ln2S3 where Ln = La, Nd, or Gd. In these systems, complex sulfides crystallize in orthorhombic space group Pnma. The sulfides melt congruently and have the following parameters; for LaScS3, a = 0.718 nm, b = 0.654 nm, c = 0.960 nm, 2000 K, 3200 MPa; for NdScS3, a = 0.712 nm, b = 0.646 nm, c = 0.952 nm, 1960 K, 3500 MPa; and for GdScS3, a = 0.704 nm, b = 0.640 nm, c = 0.946 nm, 1900 K, 3400 MPa. The extents of the solid solutions based on the existing phases increase as the effective ion radii of Ln3+ approaches that of Sc3+. At 1670 K, the LnScS3 homogeneity region is 48–52 mol % Nd2S3 and 46–54 mol % Gd2S3. Sc2S3 dissolves 3 mol % Nd2S3 and 6 mol % Gd2S3. γ-Nd2S3 dissolves 2 mol % Sc2S3, and γ-Gd2S3 dissolves 4 mol % Sc2S3. The subsystems Sc2S3-LnScS3 and LnScS3-Ln2S3 are of the eutectic type. The eutectic coordinates are, respectively, 27 mol % La2S3, 1880 K; 75 mol % La2S3, 1800 K; 30 mol % Nd2S3, 1850 K; 74 mol % Nd2S3, 1770 K; 33 mol % Gd2S3, 1800 K; and 74 mol % Gd2S3, 1730 K. 相似文献
10.
I. B. Bakhtiyarly R. I. Kerimov R. D. Kurbanova 《Russian Journal of Inorganic Chemistry》2007,52(12):1987-1990
The La2S3-Ga2S3-EuS system has been investigated along the 3Ga2S3-EuLaGa3S7 join by physicochemical methods (DTA, X-ray powder diffraction, microstructural analysis). is a quasi-binary eutectic-type section of the ternary system. Solubility on the base of both components has been revealed in the system. Solubility at room temperature is 3 mol % EuLaGa3S7 on the Ga2S3 side 1.5 mol % Ga2S3 and on the base of the EuLaGa3S7 compound. The coordinates of the eutectic point are 80 mol% EuLaGa3S7 and 1020 K. 相似文献
11.
N. V. Sikerina A. V. Solov’eva E. N. Toroshchin O. V. Andreev 《Russian Journal of Inorganic Chemistry》2007,52(12):1982-1986
Phase equilibria in the BaS-Cu2S-Gd2S3 system have been studied along the 800 K isothermal section and the CuGdS2-BaS, Cu2S-BaGdCuS3, BaGdCuS3-Gd2S3, and BaGdCuS3-BaGd2S4 polythermal sections. Complex sulfide BaGdCuS3 is formed in the title system; it has an orthorhombic KZrCuSe3-type structure (space group Cmcm) with the unit cell parameters equal to a = 0.40529(2) nm, b = 1.34831(6) nm, c = 1.02940(5) nm. This sulfide melts congruently at 1685 K. BaGdCuS3 is in equilibrium with sulfides Cu2S, BaS, Gd2S3, CuGdS2, BaGd2S4, BaCu4S3, and BaCu2S2 and with compositions in the C0 solid-solution region of the Cu2S-Gd2S3 system. Eutectics are formed between compounds CuGdS2 and BaGdCuS3 at 7.0 mol % BaS and T = 1325 K, between BaGdCuS3 and BaS at 64.0 mol % BaS and T = 1625 K, between Cu2S and BaGdCuS3 at 8.0 mol % BaGdCuS3 and T = 1125 K, between Gd2S3 and BaGdCuS3 at 64.0 mol % Gd2S3 and 1495 K, and between BaGdCuS3 and BaGd2S4 at 35 mol % BaGd2S4 and T = 1660 K. 相似文献
12.
V. I. Pekhno I. N. Stepanenko S. V. Volkov Z. A. Fokina A. M. Korduban 《Russian Journal of Coordination Chemistry》2004,30(12):859-863
The structure of rhodium thioselenochloride RhCl4Se6S9 and the products of its thermal decomposition are studied by X-ray photoelectron and IR spectroscopies, X-ray powder diffraction, thermal, and elemental analyses. The thermal decomposition of RhCl4Se6S9 was found to occur with a loss of weakly bonded chloro-, sulfur-, and selenium-containing fragments (at 100°C); at the higher temperatures, chlorine is lost and rhodium thioselenides are obtained (Rh4Se4S5 at 490°C and Rh4Se3S5 at 665°C). These changes are attended by the formation of the cluster nucleus [Rh4(µ3-Se)3(µ3-S)].Translated from Koordinatsionnaya Khimiya, Vol. 30, No. 12, 2004, pp. 910–914.Original Russian Text Copyright © 2004 by Pekhno, Stepanenko, Volkov, Fokina, Korduban. 相似文献
13.
Yu. N. Ushakova L. A. Kalinina I. S. Yurlov T. V. Bayderina I. V. Murin 《Russian Journal of Electrochemistry》2009,45(6):677-683
Solid solutions based on BaSm2S4 ? x mol % BaS (Sm2S3) are obtained. Oxide intermediates were homogenized using chemical and mechanical mixing methods. The solid solution region is determined. Complex conductivity is studied and conductivity activation energy is calculated for samples with different history. Electrolytic properties of phases based on barium thiosamarate are studied. Vacancy mechanism of defect formation is suggested. 相似文献
14.
O. V. Andreev A. S. Vysokikh V. G. Vaulin 《Russian Journal of Inorganic Chemistry》2008,53(8):1320-1324
The Sm2S3-Sm2O3 phase diagram was studied by physicochemical methods of analysis from 800 K up to melting. Two oxysulfides are formed in the system: Sm10S14O with tetragonal crystal structure (space group I41/acd; unit cell parameters: a = 1.4860 nm, c = 1.9740 nm; microhardness: H = 4700 MPa; solid decomposition temperature: 1500 K) and Sm2O2S with hexagonal structure (space group P-3m1; a = 0.3893 nm, c = 0.6717 nm; H = 4500 MPa; congruent melting temperature: 2370 K). Within the extent of the Sm2O2S-based solid solution (61–70 mol % Sm2O3) at 1070 K, a singular point appears at the compound composition on property-composition curves. The eutectic coordinates: 23 mol % Sm2O3 and 1850 K; 80 mol % Sm2O3 and 2290 K. 相似文献
15.
M. I. Kozak V. Yu. Loya N. P. Golub M. Yu. Onis’ko 《Theoretical and Experimental Chemistry》2009,45(1):69-73
The mechanism of photoinduced expansion/contraction in glassy As2S3 has a photochemical nature. Photostructural transformation is connected with rearrangement of As4S4 molecules and similar non-stoichiometric compounds, As4S4+x. These molecules are believed to exist in clusters which correspond to the second glass-forming region of As–S systems, including
the As56S44 eutectic.
Translated from Teoreticheskaya i éksperimental’naya Khimiya, Vol. 45, No. 1, pp. 59–63, January–February, 2009. 相似文献
16.
S. V. Volkov R. E. Gladyshevskii Yu. V. Mironov P. Yu. Demchenko O. G. Yanko A. I. Smolentsev Z. A. Fokina L. B. Khar’kova S. A. Baranets 《Russian Journal of Coordination Chemistry》2012,38(3):167-172
The quaternary thioselenochloride complex Os2S6Se2Cl8 (I) was obtained by a reaction of OsO4 with a solution of Se in S2Cl2 at 100°C and identified by combination of X-ray diffraction (polycrystalline approach) and cluster framework isolation. A
reaction of complex I with melted 4-cyanopyridine (4-CNPy) at 165°C gave the complex Os2S2Cl4(4-CNPy)4, which confirms the integrity of the binuclear cluster frame-work [Cl2OsS2OsCl2] in complex I. 相似文献
17.
The Tl2S-Sb2S3-Bi2S3 quasi-ternary system (system A) was studied using DTA, X- ray powder diffraction, microstructure examination, and microhardness measurements. TlSbS2-Tl4Bi2S5(TlBiS2, Bi2S3), Sb2S3-TlBiS2, Tl3SbS3-TlBiS2(Bi2S3), and [TlSb0.5Bi0.5S2]-Tl2S isopleths; isothermal sections at 500 K; and liquidus surface projection of system A were constructed. Characteristic features of the title system are extensive fields of solid solutions extended along the
TlSbS2-TlBiS2 quasi-binary section and a continuous solubility belt 1–2 mol % wide extended along the Sb2S3-Bi2S3 binary subsystem. Primary separation fields of phases and the types and coordinates of invariant and monovariant equilibria
in system A were determined. 相似文献
18.
A. L. Gushchin K. A. Kovalenko M. N. Sokolov D. Yu. Naumov E. V. Peresypkina A. V. Virovets V. P. Fedin 《Russian Chemical Bulletin》2007,56(9):1707-1711
The reactions of the oxalate complexes [M3Q7(C2O4)3]2− (M = Mo or W; Q = S or Se) with MnII, CoII, NiII, and CuII aqua and ethylenediamine complexes in aqueous and aqueous ethanolic solutions were studied. The previously unknown heterometallic
complexes [Mo3Se7(C2O4)3Ni(H2O)5]·3.5H2O (1) and K3{[Cu(en)2H2O]([Mo3S7(ox)3]2Br)}·5.5H2O (2) were synthesized. In these complexes, the oxalate clusters serve as monodentate ligands. The K(H2en)2[W3S7(C2O4)3]2Br·4H2O salt (3) was isolated from solutions containing CoII, NiII, or CuII aqua complexes and ethylenediamine. The reaction of [Mo3Se7(C2O4)3]2− with HBr produced the bromide complex [Mo3Se7Br6]2−, which was isolated as (Bu4N)2[Mo3Se7Br6] (4). Complexes 1–3 were characterized by X-ray diffraction, IR spectra, and elemental analysis. The formation of 4 was detected by electrospray mass spectrometry.
Dedicated to Academician G. A. Abakumov on the occasion of his 70th birthday.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1645–1649, September, 2007. 相似文献
19.
S. V. Volkov Yu. V. Mironov S. S. Yarovoi A. I. Smolentsev O. G. Yanko L. B. Khar’kova Z. A. Fokina 《Russian Journal of Inorganic Chemistry》2011,56(3):383-386
Rhodium selenochloride Rh2Se9Cl6 (1) reacts with aqueous solutions of KCN and CsCl and 4-cyanopyridine (4-CNPy) to give complexes KCs2Rh(CN)6 (2) and RhCl3(4-CNPy)3 (3). According to X-ray diffraction data, 2 and 3 have mononuclear structures in which the rhodium atoms are in the oxidation state III and six-coordinate environment. Reactions
1 with CN-containing ligands lead to complete displacement of selenium-containing ligands from the rhodium coordination sphere. 相似文献
20.
The phase diagrams of the ternary reciprocal systems Na,K||BO2,CO3 and Na,K||BO2,Cl were studied for the first time by a calculation-experimental method and by differential thermal analysis. Analytical models of phase equilibrium states were derived, and the coordinates of eutectics were found to be (680°C, 32 mol % NaBO2, 68 mol % KCl) and (648°C, 9 mol % NaBO2, 45.5 mol % NaCl, 45.5 mol % KCl). Binary solid solutions based on metaborates and carbonates of sodium and potassium were shown to be stable. The possibility of synthesizing tungsten oxide bronzes in a eutectic melt in the ternary system NaBO2–NaCl–КCl was revealed. 相似文献