Existence and characterization of double salts in indium trihalide – potassium halide – water systems at 21 °C (halide = Cl, Br)

1982 ◽  
Vol 60 (13) ◽  
pp. 1747-1750 ◽  
Author(s):  
J. P. Wignacourt ◽  
G. Mairesse ◽  
P. Barbier ◽  
A. Lorriaux-Rubbens ◽  
F. Wallart
Keyword(s):  
Phase Diagrams ◽  
Spectroscopic Data ◽  
Water Systems ◽  
Chloride System ◽  
Degree Of Hydration ◽  
Raman Spectroscopic ◽  
Double Salts ◽  
Potassium Halide

The degree of hydration of stable hydrates is discussed on the basis of early literature results and our determination of the phase diagrams for the systems InCl3–KCl–H2O and InBr3–KBr–H2O at 21 °C The existing double salts are formulated: 3KCl•InCl3•H2O and 2KCl•InCl3•H2O in the chloride system, and 3KBr•InBr3•1.5H2O, 2KBr•InBr3•H2O, KBr•InBr3•2H2O, and 3KBr•2InBr3 in the bromide system. All of them are incongruently saturating at 21 °C. A summary of their crystallographic and Raman spectroscopic data is given.

Existence and characterization of double salts in indium trihalide – potassium halide – water systems at 21 °C (halide = Cl, Br)

1984 ◽  
Vol 62 (6) ◽  
pp. 1227-1228
Author(s):  
J. P. Wignacourt ◽  
G. Mairesse ◽  
P. Barbier ◽  
A. Lorriaux-Rubbens ◽  
F. Wallart
Keyword(s):  
Water Systems ◽  
Double Salts ◽  
Potassium Halide

not available

High-pressure Synthesis and Characterization of the Fluoride Borate Tm5(BO3)2F9

2010 ◽  
Vol 65 (10) ◽  
pp. 1213-1218 ◽  
Author(s):  
Almut Haberer ◽  
Michael Enders ◽  
Reinhard Kaindl ◽  
Hubert Huppertz
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
Spectroscopic Data ◽  
Synthesis And Characterization ◽  
Raman Spectroscopic ◽  
Rare Earth Fluoride ◽  
High Pressure High Temperature ◽  
Earth Fluoride ◽  
Pressure Synthesis

The rare earth fluoride borate Tm5(BO3)2F9 was synthesized from Tm2O3, B2O3, and TmF3 under high-pressure/high-temperature conditions of 5 GPa and 900 °C in a Walker-type multianvil apparatus. The single-crystal structure determination revealed that Tm5(BO3)2F9 is isotypic to the compounds RE5(BO3)2F9 (RE = Er,Yb). Tm5(BO3)2F9 crystallizes in the space group C2/c (Z = 4) with the parameters a = 2030.9(4), b = 606.2(2), c = 822.6(2) pm, β = 100.5(1)°, V = 995.7(3) Å3, R1 = 0.0341, and wR2 = 0.0724 (all data). The structure is composed of isolated BO3 groups, ninefold coordinated thulium cations, and fluoride anions. Infrared and Raman spectroscopic data of Tm5(BO3)2F9 are compared to the data of RE5(BO3)2F9 (RE = Er, Yb).

Double salts of indium trichloride with the alkali chlorides, with ammonium chloride, and with indium sulfate

1977 ◽  
Vol 55 (15) ◽  
pp. 2792-2798 ◽  
Author(s):  
Elinor M. Kartzmark
Keyword(s):  
Potassium Chloride ◽  
Phase Diagrams ◽  
Ammonium Chloride ◽  
Double Salt ◽  
Double Salts ◽  
Alkali Chlorides

From a determination of the phase diagrams, at 25 °C, the following double salts were shown to exist: 3LiCl•InCl3•8H2O in the system LiCl–InCl3–H2O, 2KCl•InCl3•H2O and 3KCl•InCl3•2H2O in the system KCl–InCl3–H2O, 2RbCI•InCl3•H2O in the system RbCl–InCl3–H2O, 2CsCl•InCl3•H2O in the system CsCl–InCl3–H2O, 2NH4Cl•InCl3•H2O in the system NH4Cl–InCl3–H2O, In2(SO4)3•InCl3•(17 ± 1)H2O in the system In2(SO4)3–InCl3–H2O. No double salt was found in the system NaCl–InCl3–H2O, studied previously (1). All the double salts except the two involving potassium chloride are congruently saturating at 25 °C.

FT Raman Spectroscopy as a Tool for Characterization of Derivatized Silica Gel Sorbents

2005 ◽  
Vol 70 (2) ◽  
pp. 168-177
Author(s):  
Zuzana Tománková ◽  
Pavel Matějka ◽  
Karel Volka ◽  
Vladimír Král
Keyword(s):  
Raman Spectroscopy ◽  
Silica Gel ◽  
Stationary Phases ◽  
Amide Bonds ◽  
Raman Spectroscopic ◽  
Ft Raman Spectroscopy ◽  
Trimethylsilyl Groups ◽  
Ft Raman

The potential of Fourier-transform (FT) Raman spectroscopy for verification of individual steps of synthesis of new chromatographic stationary phases was studied. 3-Aminopropylated silica gel was modified with two different optically active compounds ((+)-cloprostenol, (+)-(R)-2,2'-dihydroxy-1,1'-binaphthalene-3-carboxylic acid) via amide bonds. In the next step, free silanol groups were protected with trimethylsilyl groups. The FT Raman spectroscopic results compared with the data obtained by elemental analysis enable not only qualitative verification of synthetic steps, but also a semiquantitative determination of covering of the silica gel surface by derivatization agent.

scholarly journals Assembly with Multinuclear Silver-Ethynediide/-Ethynide Supramolecular Synthons

2014 ◽  
Vol 70 (a1) ◽  
pp. C633-C633
Author(s):  
Thomas Mak
Keyword(s):  
Systematic Investigation ◽  
Supramolecular Network ◽  
Supramolecular Synthons ◽  
The Past ◽  
Supramolecular Architectures ◽  
Double Salts ◽  
Argentophilic Interactions ◽  
Variable Coordination

Over the past 15 years, our group has conducted a systematic investigation on the synthesis and structural characterization of a series of silver(I) double and multiple salts containing silver carbide Ag2C2n (n = 1, 2), in which the all-carbon dianion ethynediide C22-is generally capsulated inside a polyhedral Agm (m = 6-10) cage, whereas C42-exhibits variable coordination modes involving each terminal triple-bond and a Agm (m = 3-5) basket. Recently we reported the first successful synthesis of their unstable higher homologues Ag2C6and Ag2C8, which were characterized through X-ray structure determination of their crystalline double salts Ag2C6·8AgCF3CO2·6H2O (3), 4(Ag2C6)·16AgCF3CO2·14.5DMSO and 2.5(Ag2C8)·10AgCF3CO2·10DMSO (Figure 1).[1] Our concomitant research program focused on silver(I) coordination and supramolecular network assembly based on multinuclear aggregates containing various kinds of carbon-rich ethynide ligands has established the robustness of multinuclear metal-ligand silver-ethynide supramolecular synthons symbolized as C2@Agn (n = 5-10), Ag4⊂C≡C–C≡C⊃Ag4, Agn⊂C6H4(n = 7-9), Agn⊂C≡C–R–C≡C⊃Agn (R = o-, m-, p-C6H4; n = 4, 5) and R–C≡C⊃Agn (R = aryl, alkyl, heterocycle,...; n = 4, 5), which function as versatile structural building units for the construction of a variety of discrete molecules, high-nuclearity clusters,[2] as well as 1D-3D coordination and supramolecular architectures.[3] In the absence of a definitive theoretical study, an empirical bonding model involving ionic, covalent and argentophilic interactions that consolidate the above-mentioned supramolecular synthons is proposed, which can account for the fact that analogous synthons have not been found for copper(I) and gold(I). This work is supported by Hong Kong Research Grants Council GRF CUHK 402710

scholarly journals Low-mass eclipsing binaries in the WFCAM Transit Survey

2016 ◽  
Vol 12 (S328) ◽  
pp. 124-126
Author(s):  
Patricia Cruz ◽  
Marcos Diaz ◽  
David Barrado ◽  
Jayne Birkby
Keyword(s):  
Spectroscopic Data ◽  
Main Sequence ◽  
Eclipsing Binaries ◽  
Low Mass Stars ◽  
Orbital Parameters ◽  
Short Period ◽  
Basic Parameters ◽  
Low Mass

AbstractThe characterization of short-period detached low-mass binaries, by the determination of their physical and orbital parameters, reveal the most precise basic parameters of low-mass stars. Particularly, when photometric and spectroscopic data of eclipsing binaries (EBs) are combined. Recently, 16 new low-mass EBs were discovered by the WFCAM Transit Survey (WTS), however, only three of them were fully characterized. Therefore, new spectroscopic data were already acquired with the objective to characterize five new detached low-mass EBs discovered in the WTS, with short periods between 0.59 and 1.72 days. A preliminary analysis of the radial velocity and light curves was performed, where we have derived orbital separations of 2.88 to 6.69 R⊙, and considering both components, we have found stellar radii ranging from 0.40 to 0.80 R⊙, and masses between 0.24 and 0.71 M⊙. In addition to the determination of the orbital parameters of these systems, the relation between mass, radius and orbital period of these objects can be investigated in order to study the mass-radius relationship and the radius anomaly in the low main-sequence.

Synthesis and characterization of PbBaGeO4

2015 ◽  
Vol 70 (6) ◽  
pp. 435-440 ◽  
Author(s):  
Lucas L. Petschnig ◽  
Hubert Huppertz
Keyword(s):  
Spectroscopic Data ◽  
Barium Carbonate ◽  
Structural Data ◽  
Structure Type ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
Orthorhombic Space Group ◽  
X Ray ◽  
Raman Spectroscopic

AbstractPbBaGeO4 was prepared by high-temperature solid-state synthesis at 900 °C in a platinum crucible from lead(II) oxide, barium carbonate, and germanium(IV) oxide. This compound crystallizes with the BaNdGaO4 structure type in the orthorhombic space group P212121 (no. 19). The structure was refined from single-crystal X-ray diffraction data: a = 1021.6(2), b = 763.4(2), c = 618.1(2) pm, V = 482.1(2) Å3, and residuals of R1 = 0.0373 and wR2 = 0.0730 for all data. Next to structural data, Raman spectroscopic data of PbBaGeO4 are reported.

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