Sur l'existence des composés P4Sex(x &([a-z]+); 3) et P4Se3−nSn(n = 1,2)

1974 ◽  
Vol 52 (12) ◽  
pp. 2190-2196 ◽  
Author(s):  
Yves Monteil ◽  
Henri Vincent
Keyword(s):  
Thermal Analysis ◽  
Phase Diagram ◽  
Binary Compound ◽  
Ternary Diagram ◽  
Heat Of Fusion ◽  
X Ray ◽  
X Ray Crystallography ◽  
Binary Section ◽  
Quasi Binary Section ◽  
Mixed Compound

The phase diagram of P(red) + P4Se3 was studied systematically by differential thermal analysis and X-ray crystallography. P4Se3, which is the sole binary compound in the system, exists as three allotropic forms: P4Se3α transforms at 82 °C into P4Se3β which is transformed at 192 °C into P4Se3γ; the β- and γ- forms were unknown. The heats of the allotropic transformations were evaluated as well as the heat of fusion of P4Se3.In the ternary diagram P–S–Se the isopleth P4Se3–P4S3 is a quasi-binary section. An eutectic is observed at 170 °C with a concentration of 5% in P4Se3. No mixed compound of the type P4Se3−nSn (n an integer = 1 or 2) was found during the study of this isopleth. [Journal translation]

scholarly journals ХАРАКТЕР ХИМИЧЕСКОЕ ВЗАИМОДЕЙСТВИЕ И СТЕКЛООБРАЗОВАНИЕ В СИСТЕМЕ AS2SE3-IN2TE3

2021 ◽  
Vol 7 (9(63)) ◽  
pp. 18-22
Author(s):  
ИМИР ИЛЬЯС АЛИЕВ ◽  
ДЖЕЙРАН АЛИ АХМЕДОВА ◽  
ЭЛЬШАН ТЕЙЙУБ КАХРАМАНОВ
Keyword(s):  
Phase Diagram ◽  
Reciprocal System ◽  
Glass Formation Region ◽  
Slow Cooling ◽  
Formation Region ◽  
X Ray ◽  
Tetragonal System ◽  
Binary Section ◽  
Quasi Binary Section ◽  
Ice Water

Mетодами дифференциально-термического (ДТА), рентгенофазового (РФА), микроструктурного (МСА) анализа, а также измерения микротвердости и плотности, исследована система As2Se3-In2Te3 и построена Т - х фазовая диаграмма. Система As2Sе3-In2Te3 является квазибинарным сечением тройной взаимной системы As,In//Sе,Te. Cоединение In2As2Se3Te3 кристаллизуется в тетрагональной сингонии с параметрами решетки: а =9,40; с =6,36 Å, плотность ρпикн.=5,36 г/см3, ρрент.=5,85 г/см3. В системе образуется одно инконгруэнтное соединение In2As2Sе3Te3,плавящееся при 620оС. Выявлено, что в системе твердые растворы на основе In2Te3 доходят до 3 мол. %, а на основе As2Sе3 практически не обнаружены. В системе при медленном охлаждении область стеклообразования на основе As2Sе3 доходит до 7 мол. % In2Te3, а в режиме закалки в ледяной воде около 12 мол. % In2Te3. By the methods of differential thermal (DTA), X-ray phase (XRD), microstructural (MSA) analysis, as well as measurements of microhardness and density, the As2Se3-In2Te3 system was investigated and the T-x phase diagram was constructed. The As2Sе3-In2Te3 system is a quasi-binary section of the ternary reciprocal system As, In // Se, Te. One incongruent compound In2As2Sе3Te3 is formed in the system, melting at 620оС. Compound In2As2Sе3Te3 crystallizes in the tetragonal system with lattice parameters: a = 9.40; с = 6.36 Å, density ρpycn. = 5.36 g/cm3, ρX-rey. = 5.85 g/cm3. It was found that in the system, solid solutions based on In2Te3 reach 3 mol. %, and practically not found on the basis of As2Sе3. In the system, upon slow cooling, the glass formation region based on As2Se3 reaches 7 mol. % In2Te3, and in the mode of quenching in ice water about 12 mol. % In2Te3.

A Zinc(II)-Silver(I) Bimetallic Coordination Polymer Assembled Through Argentophilic and π-π Interactions, f[Zn(phen)2(H2O) {Ag(CN)2g][Ag(CN)2]·MeOH}n (phen=1,10-Phenanthroline)

2013 ◽  
Vol 68 (2) ◽  
pp. 161-167 ◽  
Author(s):  
Muhammad Monim-ul-Mehbooba ◽  
Muhammad Ramzan ◽  
Tobias Rüffe ◽  
Heinrich Lang ◽  
Shafqat Naddem ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Thermal Analysis ◽  
Ir Spectroscopy ◽  
Coordination Polymer ◽  
Hydrogen Bonds ◽  
X Ray ◽  
Π Interactions ◽  
X Ray Crystallography ◽  
3D Network ◽  
Argentophilic Interactions

A cyanido-bridged Zn(II)-Ag(I) bimetallic coordination polymer, {[Zn(phen)2(H2O){Ag(CN)2}] [Ag(CN)2]·MeOH}n (1), was prepared using ZnCl2, 1,10-phenanthroline (phen) and K[Ag(CN)2] and characterized by IR spectroscopy, thermal analysis and X-ray crystallography. The crystal structure of 1 consists of dinuclear [Zn(phen)2(H2O){Ag(CN)2}]+ cations, [Ag(CN)2]- anions and a methanol molecule. The non-coordinated [Ag(CN)2]- anions are linked to the [Zn(phen)2(H2O){Ag(CN)2}]+ complex cations through argentophilic interactions leading to the formation of chains. The chains are connected by hydrogen bonds and π-π interactions to give a 3D network.

Synthesis, crystal structure, and thermal analysis of a copper(II) complex with imidazo[4,5-f]1,10-phenantroline

2011 ◽  
Vol 65 (1) ◽  
Author(s):  
Fushan Yu ◽  
Lingling Zhang ◽  
Jinting Tan ◽  
Xia Li ◽  
Lijun Wang ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Monoclinic Space Group ◽  
Supramolecular Architecture ◽  
Residual Rate ◽  
X Ray ◽  
X Ray Crystallography ◽  
Decomposition Procedure ◽  
Benzene Rings ◽  
Π Stacking Interaction ◽  
Three Stages

AbstractA new complex, [Cu2(μ 2-Cl)2(IP)2Cl2] · 4H2O (IP = imidazo[4,5-f]1,10-phenathroline), was synthesised and characterised by elemental analysis, thermal analysis, IR spectra, and X-ray crystallography. The results showed that the complex crystallises in the monoclinic space group P $$ \bar 1 $$; a = 7.880 (2) Å, b = 9.227(2) Å, c = 10.694(2) Å; α = 97.788(4)°, β = 100.637(4)°, γ = 95.841(3)°; V = 750.7(3) Å3, and Z = 1. The complex is further stabilised by H-bonds and a π-π stacking interaction between the pyridine and benzene rings of two neighbouring molecules with the centroid.centroid distance of 3.498(3) Å, leading to a 3D supramolecular architecture. Thermal decomposition procedure of the complex explored by TG-DTG has three stages, and the final product is Cu in residual rate of 16.18 % (calculated to be 16.26 %).

Thermochemische Untersuchungen zu den Systemen SE2O3-SeO2. V. Ytterbiumselenoxide auf dem Schnitt Yb2O3-SeO2/Thermochemical Investigations of Systems RE2O3-SeO2. V. Ytterbium Selenium Oxides on the Line Yb2O3-SeO2

2002 ◽  
Vol 57 (8) ◽  
pp. 868-876 ◽  
Author(s):  
H. Oppermann ◽  
M. Zhang-Preße ◽  
P. Schmidt
Keyword(s):  
Thermal Analysis ◽  
Phase Diagram ◽  
Solid State ◽  
Ir Spectroscopy ◽  
Powder Diffraction ◽  
Solid State Reaction ◽  
Total Pressure ◽  
Pressure Measurements ◽  
Thermodynamical Equilibrium ◽  
X Ray

The pure ternary phases on the line Yb2O3-SeO2 in thermodynamical equilibrium have been synthesized by solid state reaction and characterized using X-ray powder diffraction and IR-spectroscopy. There exist three phases: Yb2SeO5, Yb2Se3O9 and Yb2Se4O11, the last one with a homogeneiety range extending a higher SeO2-content. The thermal decompositions have been determined by total pressure measurements, and the thermodynamical data of the compounds have been derived. The phase diagram and the phase barogram have been established using the results of thermal analysis and total pressure measurements.

STUDY ON PHASE DIAGRAM OF BaO-Y2O3-CuO TERNARY SYSTEM

1987 ◽  
Vol 01 (02) ◽  
pp. 363-365 ◽  
Author(s):  
Guangcan Che ◽  
Jingkui Liang ◽  
Wei Chen ◽  
Sishen Xie ◽  
Yude Yu ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Phase Diagram ◽  
Ternary System ◽  
Room Temperature ◽  
X Ray Diffraction ◽  
High Tc ◽  
X Ray ◽  
High Tc Superconductor

In Ba-R-Cu-O system (R=La, Y) , high Tc superconductor have been discovered (1–3). The room temperature section of the phase diagram in BaO-Y2O3-CuO system has been completed by means of X-ray diffraction, thermal analysis and superconducting measurements.

Growth, Optical Adsorption and Resistivity of (Ga0.6In0.4)2Se3 and (Ga0.594In0.396Er0.01)2Se3 Single Crystals

2013 ◽  
Vol 200 ◽  
pp. 50-53
Author(s):  
Inna A. Ivashchenko ◽  
Volodumur V. Halyan ◽  
Irina V. Danylyuk ◽  
Volodumur Z. Pankevuch ◽  
Georgij Y. Davydyuk ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Phase Diagram ◽  
Differential Thermal Analysis ◽  
Band Gap ◽  
Single Crystals ◽  
Optical Band Gap ◽  
X Ray Diffraction ◽  
X Ray ◽  
Vertical Bridgman ◽  
Xrd Method

The phase diagram of the Ga2Se3–In2Se3 system was investigated by differential-thermal analysis (DTA) and X-ray diffraction (XRD) method. The single crystals from the area of existence of the γ2 phase with the compositions (Ga0.6In0.4)2Se3 and (Ga0.594In0.396Er0.01)2Se3 were grown by a vertical Bridgman method. Absorption spectra of the grown crystals were studied. The estimated optical band gap is 1.95±0. 01 eV. The resistance of the single crystals of (Ga0.6In0.4)2Se3 (R=500 MΩ) and (Ga0.594In0.396Er0.01)2Se3 (R=210 MΩ) was measured.

scholarly journals Phase relations in the CuI-SbSI-SbI3 composition range of the Cu–Sb–S–I quaternary system

2021 ◽  
Vol 23 (2) ◽  
pp. 236-244
Author(s):  
Parvin R. Mammadli ◽  
Vagif A. Gasymov ◽  
Ganira B. Dashdiyeva ◽  
Dunya M. Babanly
Keyword(s):  
Quaternary System ◽  
Composition Range ◽  
Liquidus Surface ◽  
Polymorphic Transitions ◽  
X Ray ◽  
Immiscibility Region ◽  
Binary Section ◽  
Quasi Binary Section ◽  
Polythermal Sections ◽  
Primary Crystallisation

The phase equilibria in the Cu-Sb-S-I quaternary system were studied by differential thermal analysis and X-ray phase analysis methods in the CuI-SbSI-SbI3 concentration intervals. The boundary quasi-binary section CuI-SbSI, 2 internal polythermal sections of the phase diagram, as well as, the projection of the liquidus surface were constructed. Primary crystallisation areas of phases, types, and coordinates of non- and monovariant equilibria were determined. Limited areas of solid solutions based on the SbSI (b-phase) and high-temperature modifications of the CuI (α1- and α2- phases) were revealed in the system. The formation of the α1 and α2 phases is accompanied by a decrease in the temperatures of the polymorphic transitions of CuI and the establishment of metatectic (3750C) and eutectoid (2800C) reactions. It was also shown, that the system is characterised by the presence of a wide immiscibility region that covers a significant part of theliquidus surface of the CuI and SbSI based phases 

scholarly journals PHYSICO-CHEMICAL INTERACTION OF THE COPPER AND ANTIMONY IODIDES

2021 ◽  
pp. 43-47
Author(s):  
P.R. Mammadli ◽  
Keyword(s):  
Thermal Analysis ◽  
Phase Diagram ◽  
Differential Thermal Analysis ◽  
Chemical Interaction ◽  
Equilibrium Temperature ◽  
Polymorphic Transformations ◽  
X Ray ◽  
Immiscibility Region ◽  
Physico Chemical ◽  
Concentration Interval

The character of the mutual interaction of the components in the CuI-SbI3 system was studied by differential thermal analysis and X-ray phase analysis methods and its phase diagram was constructed. It was found that the system is quasi-binary and forms a monotectic phase diagram. The immiscibility region covers ~15-93 mol% SbI3 concentration interval at the monotectic equilibrium temperature (~ 4930С). The temperatures of polymorphic transformations of the CuI compound in the system drop slightly and these phase transitions take place by metatectic reactions

scholarly journals PHASE EQUILIBRIUM IN THE INAS2SE4 -INAS2SSE3 AND PROPERTIES OF THE FORMED PHASES

2021 ◽  
Vol 7 (8(62)) ◽  
pp. 38-42
Author(s):  
RUZGARA SEVIM MAGAMMADRAGIMOVA
Keyword(s):  
Phase Diagram ◽  
Phase Equilibrium ◽  
Solid Solutions ◽  
Room Temperature ◽  
Quaternary System ◽  
Lattice Parameters ◽  
Binary Section ◽  
Quasi Binary Section

The character of the interaction in the InAs2Se4 -InAs2SSe3 system was investigated and its phase diagram was constructed by DTA, XRD, MSA, as well as by measuring the microhardness and determining the density of the alloys. It was found that the InAs2Se4 -InAs2SSe3 section is a quasi-binary section of the In-As-S-Se quaternary system. Solid solutions based on InAs2Se4 at room temperature reach 10 mol % InAs2SSe3, and on the basis of InAs2SSe3 it extends to 15 mol % InAs2Se4. The lattice parameters are calculated from the region of solid solutions based on InAs2Se4 and InAs2SSe3.

Revised phase diagram for the Nd–Pt system from 35 to 85 at% platinum

2010 ◽  
Vol 43 (1) ◽  
pp. 33-37 ◽  
Author(s):  
Ch. F. Xu ◽  
Z. F. Gu ◽  
G. Cheng ◽  
H. Y. Zhou ◽  
Z. M. Wang ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Phase Diagram ◽  
Differential Thermal Analysis ◽  
Binary System ◽  
Homogeneity Range ◽  
Low Temperatures ◽  
Polymorphic Transformation ◽  
Structure Type ◽  
X Ray Diffraction ◽  
X Ray

The phase diagram of the Nd–Pt system from 35 to 85 at%Pt has been revised using X-ray diffraction and differential thermal analysis. It is found that the Nd3Pt4phase with the rhombohedral Pd4Pu3structure type is unstable and decomposes into the two neighboring phases NdPt and NdPt2at temperatures ranging approximately from 583 to 1123 K. It is confirmed that the homogeneity range for the Laves phase NdPt2extends from about 68.5 to 75.3 at%Pt in the Nd–Pt binary system. The polymorphic transformation temperature of α-NdPt ⇌ β-NdPt is about 623 K, where the α-NdPt phase with BFe type is stable at low temperatures and the β-NdPt phase with BCr type at high temperatures.

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