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AbstractAbstract
[en] Removal of volatiles at 243 K from solutions of completely dissolved LnF (Ln=La-Dy and Y) and XeF (molar ratio 1 : 3) in anhydrous HF acidified with an excess of BF resulted in [Ln (XeF)](BF) salts. Isolated solids are stable at 298 K and give similar Raman spectra. [La(XeF)](BF) crystallizes in the monoclinic space group C2/m at 150 K. Each La atom is coordinated with three XeF ligands. Six F atoms provided by six bridging BF units, that connect the neighboring La atoms into columns, complete the nine-fold coordination of each La atom. Chemical reactions carried out in the same way but with molar ratio LnF:XeF = 1:1 yielded [Ln (XeF)](BF) salts (La - Nd). Crystal structures of La and Nd salts are isotypic and crystallize in the monoclinic space group P2/m at 150 K (La) and 200 K (Nd). Each Ln center is coordinated by nine fluorine atoms provided by eight BF units and one XeF ligand. The BF groups interconnect the Ln atoms into two-dimensional layers. With molar ratio LnF:XeF = 1:2 and the same synthetic approach, only La yielded [La(XeF)](BF) salt. Prolonged pumping of [Ln (XeF)](BF) (n=3, 2, 1) at 298 K or attempts of the isolation at 298 K resulted in products with lower content of XeF or in mixtures of various products. In addition to [Ln (XeF)](BF) and LnF/BF products, the [Ln (XeF)]F(BF) salts (Ln=La, Nd, Sm, Eu, Tb, Dy and Y) also formed. The crystal structures of LaF(HF)(BF) and LaF (BF) side products were determined. (© 2021 Wiley‐VCH GmbH)
Secondary Subject
Source
Available from: http://dx.doi.org/10.1002/ejic.202100353
Record Type
Journal Article
Journal
European Journal of Inorganic Chemistry (online); ISSN 1099-0682;
; CODEN EJICFO; v. 2021(26); p. 2669-2681

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BORON FLUORIDES, CERIUM FLUORIDES, CRYSTAL STRUCTURE, DYSPROSIUM FLUORIDES, EUROPIUM FLUORIDES, GADOLINIUM FLUORIDES, LANTHANUM FLUORIDES, LATTICE PARAMETERS, NEODYMIUM FLUORIDES, PRASEODYMIUM FLUORIDES, RAMAN SPECTRA, SAMARIUM FLUORIDES, SPACE GROUPS, SYNTHESIS, TERBIUM FLUORIDES, XENON FLUORIDES, YTTRIUM FLUORIDES
BORON COMPOUNDS, BORON HALIDES, CERIUM COMPOUNDS, CERIUM HALIDES, DYSPROSIUM COMPOUNDS, DYSPROSIUM HALIDES, EUROPIUM COMPOUNDS, EUROPIUM HALIDES, FLUORIDES, FLUORINE COMPOUNDS, GADOLINIUM COMPOUNDS, GADOLINIUM HALIDES, HALIDES, HALOGEN COMPOUNDS, LANTHANUM COMPOUNDS, LANTHANUM HALIDES, NEODYMIUM COMPOUNDS, NEODYMIUM HALIDES, PRASEODYMIUM COMPOUNDS, PRASEODYMIUM HALIDES, RARE EARTH COMPOUNDS, RARE GAS COMPOUNDS, SAMARIUM COMPOUNDS, SAMARIUM HALIDES, SPECTRA, SYMMETRY GROUPS, TERBIUM COMPOUNDS, TERBIUM HALIDES, TRANSITION ELEMENT COMPOUNDS, XENON COMPOUNDS, XENON HALIDES, YTTRIUM COMPOUNDS, YTTRIUM HALIDES
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AbstractAbstract
[en] The occurrence of twinning can often be related to higher symmetrical structures. Fluorides are frequently twinned due to their close relation to high symmetry structures like fluoride, tysonite or pyrochlores. The series of compounds CsLn_2F_7 is no exception. We refined the structures of the twinned compounds with Ln=Nd, Gd, Tb, Er, Yb in space group P112_1/b. An analysis of the pseudosymmetry of the resulting structures shows a highly symmetrical cation partial structure with a cation distribution similar to the one in the hexagonal Laves phase MgZn_2. Several other compounds ALn_2F_7, which have been described in the literature, show a similar cation array. The diversity of different space groups which have been reported for ALn_2F_7 compounds can be better understood using group-subgroup relationships assuming the hypothetical structure of the cation array with space group P6_3/mmc as aristotype. Furthermore, the twinning is easily understood on the basis of the lost symmetry operations in the symmetry reduction from point group 6/mmm, e.g. to 2/m in the case of the CsLn_2F_7 compounds.
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Record Type
Journal Article
Journal
Zeitschrift fuer Kristallographie. Crystalline Materials; ISSN 2194-4946;
; CODEN ZKCMAJ; v. 231(10); p. 631-639

Country of publication
ALKALI METAL COMPOUNDS, CESIUM COMPOUNDS, CESIUM HALIDES, ERBIUM COMPOUNDS, ERBIUM HALIDES, FLUORIDES, FLUORINE COMPOUNDS, GADOLINIUM COMPOUNDS, GADOLINIUM HALIDES, HALIDES, HALOGEN COMPOUNDS, NEODYMIUM COMPOUNDS, NEODYMIUM HALIDES, RARE EARTH COMPOUNDS, SYMMETRY GROUPS, TERBIUM COMPOUNDS, TERBIUM HALIDES, YTTERBIUM COMPOUNDS, YTTERBIUM HALIDES
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Salyulev, A.B.; Vovkotrub, Eh.G.
All-Russian Conference «Solid state chemistry and functional materials - 2016», XI Seminar «Thermodynamics and materials science». Sat 20th Mendeleev Congress on general and applied chemistry. Conference proceedings2016
All-Russian Conference «Solid state chemistry and functional materials - 2016», XI Seminar «Thermodynamics and materials science». Sat 20th Mendeleev Congress on general and applied chemistry. Conference proceedings2016
AbstractAbstract
No abstract available
Original Title
O vzaimodejstvii soedinenij trekhvalentnykh RZEh s khlorom v khloridnykh sistemakh; Ln = Ce, Tb, Pr
Primary Subject
Source
Rossijskaya Akademiya Nauk, Moscow (Russian Federation); Ural'skoe Otdelenie RAN, Ekaterinburg (Russian Federation); Federal'noe Agentstvo Nauchnykh Organizatsij, Moscow (Russian Federation); Inst. Khimii Tverdogo Tela UrO RAN, Ekaterinburg (Russian Federation); Inst. Neorganicheskoj Khimii im. A.V. Nikolaeva SO RAN, Novosibirsk (Russian Federation); 368 p; ISBN 978-5-7691-2444-0;
; 2016; p. 271; All-Russian Conference ''Solid state chemistry and functional materials - 2016''; Vserossijskaya konferentsiya «Khimiya tverdogo tela i funktsional'nye materialy - 2016», XI seminar «Termodinamika i materialovedenie»; Ekaterinburg (Russian Federation); 20-23 Sep 2016; 11. Seminar on Thermodynamics and materials science; Vserossijskaya konferentsiya «Khimiya tverdogo tela i funktsional'nye materialy - 2016», XI seminar «Termodinamika i materialovedenie»; Ekaterinburg (Russian Federation); 20-23 Sep 2016; 2 refs.

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Book
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Conference
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ALKALI METAL COMPOUNDS, CERIUM COMPOUNDS, CERIUM HALIDES, CESIUM COMPOUNDS, CESIUM HALIDES, CHEMICAL REACTIONS, CHLORIDES, CHLORINE COMPOUNDS, HALIDES, HALOGEN COMPOUNDS, POTASSIUM COMPOUNDS, POTASSIUM HALIDES, PRASEODYMIUM COMPOUNDS, PRASEODYMIUM HALIDES, RARE EARTH COMPOUNDS, RUBIDIUM COMPOUNDS, RUBIDIUM HALIDES, SYNTHESIS, TERBIUM COMPOUNDS, TERBIUM HALIDES
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AbstractAbstract
[en] The diffuse reflectance and photoluminescence (PL) spectra of NdI2, SmI2, EuI2, DyI2, TmI2 and YbI2 were measured between 225 and 12 500 nm in order to determine their 4fn → 4fn-15d1 optical bandgaps. The results were compared with those obtained using an empirical model of the electronic structure of LnI2. The results can be used to explain the lanthanide valency and crystalline structure changes of other lanthanide diiodides such as PrI2. (paper)
Source
Available from http://dx.doi.org/10.1088/0953-8984/24/27/275502; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
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DYSPROSIUM COMPOUNDS, DYSPROSIUM HALIDES, ELEMENTS, EMISSION, EUROPIUM COMPOUNDS, EUROPIUM HALIDES, HALIDES, HALOGEN COMPOUNDS, IODIDES, IODINE COMPOUNDS, LUMINESCENCE, METALS, NEODYMIUM COMPOUNDS, NEODYMIUM HALIDES, PHOTON EMISSION, RARE EARTH COMPOUNDS, SAMARIUM COMPOUNDS, SAMARIUM HALIDES, THULIUM COMPOUNDS, THULIUM HALIDES, YTTERBIUM COMPOUNDS, YTTERBIUM HALIDES
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AbstractAbstract
[en] From reactions of equimolar quantities of the heavier lanthanoids (M = Gd - Lu) with the elements sulfur and iodine in fused silica ampoules (900 C, 10 d) phase-pure samples of the lanthanoid sulfide iodides MSI (M = Gd - Lu) could be prepared. Besides the already structurally determined sulfide iodides MSI with M = Gd and Dy, all samples could be characterized by means of X-ray powder diffraction and their magnetic behavior was examined. In addition a single-crystal structure refinement for HoSI was carried out (orthorhombic, Pmmn; a = 415.09(4) pm, b = 531.34(5) pm, c = 920.53(9) pm), which confirmed the isotypy of the later lanthanoid sulfide iodides with the structure of FeOCl. On the basis of the X-ray powder diffraction experiments all prepared compounds could be indexed in a primitive orthorhombic unit cell. An analysis of the determined lattice parameters and cell volumes resulted in the typical lanthanoid contraction for compounds within the row of the 4f elements. The magnetochemical studies led to the expected effective magnetic moments for trivalent lanthanoid cations without showing any magnetic ordering phenomenon. (Copyright copyright 2013 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)
Original Title
Sulfidiodide (MSI) der schweren Lanthanoide (M = Gd - Lu). Kristallstrukturen und magnetische Eigenschaften
Primary Subject
Secondary Subject
Source
Available from: http://dx.doi.org/10.1002/zaac.201200488; With 3 figs., 5 tabs., 14 refs.
Record Type
Journal Article
Journal
Zeitschrift fuer Anorganische und Allgemeine Chemie (1950); ISSN 0044-2313;
; CODEN ZAACAB; v. 639(2); p. 237-240

Country of publication
CRYSTAL STRUCTURE, DYSPROSIUM IODIDES, DYSPROSIUM SULFIDES, ERBIUM IODIDES, ERBIUM SULFIDES, GADOLINIUM IODIDES, GADOLINIUM SULFIDES, HOLMIUM IODIDES, HOLMIUM SULFIDES, LATTICE PARAMETERS, LUTETIUM IODIDES, LUTETIUM SULFIDES, MAGNETIC PROPERTIES, MONOCRYSTALS, TERBIUM IODIDES, TERBIUM SULFIDES, THULIUM IODIDES, X-RAY DIFFRACTION, YTTERBIUM IODIDES, YTTERBIUM SULFIDES
CHALCOGENIDES, COHERENT SCATTERING, CRYSTALS, DIFFRACTION, DYSPROSIUM COMPOUNDS, DYSPROSIUM HALIDES, ERBIUM COMPOUNDS, ERBIUM HALIDES, GADOLINIUM COMPOUNDS, GADOLINIUM HALIDES, HALIDES, HALOGEN COMPOUNDS, HOLMIUM COMPOUNDS, HOLMIUM HALIDES, IODIDES, IODINE COMPOUNDS, LUTETIUM COMPOUNDS, LUTETIUM HALIDES, PHYSICAL PROPERTIES, RARE EARTH COMPOUNDS, SCATTERING, SULFIDES, SULFUR COMPOUNDS, TERBIUM COMPOUNDS, TERBIUM HALIDES, THULIUM COMPOUNDS, THULIUM HALIDES, YTTERBIUM COMPOUNDS, YTTERBIUM HALIDES
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AbstractAbstract
[en] An easy to use and rapid procedure of ionometric determination of Zn and Cd in some alloys is presented. The method is based on the different capacity of complex formation of metal cations. Ion-selective electrodes with tetradecylammonium chloride and iodide were used as indicator electrodes. To separate Zn and Cd and to increase the selectivity of determination a sorption column with strong acid cationite KU-2 is used. Zinc and cadmium determination in alloys was conducted with the help of the restricting solutions method. It was achieved by a successive measuring of the ion-selective electrode potential in a standard solution with a lower zinc (cadmium) concentration, then in eluate and in a standard solution with a higher zinc (cadmium) concentration. The procedure thus proposed provides 4 -6 determination per hour
[ru]
Описана простая и экспрессная методика ионометрического определения цинка и кадмия в некоторых образцах сплавов, основанная на различной комплексообразующей способности катионов металлов. В качестве индикаторных использованы ион-селективные электроды с мембранами на основе хлорида и иодида тетрадециламмония соответственно. Для разделения цинка и кадмия, а также для повышения селективности определения применена сорбционная колонка с сильнокислотным катионитом КУ-2. Определение цинка и кадмия в сплавах проводили с помощью метода ограничивающих растворов. Для этого последовательно измеряли потенциал ион-селективного электрода в стандартном растворе с меньшей концентрацией цинка (кадмия), затем в элюате и стандартном растворе с большей концентрацией. С использованием предлагаемой методики можно проводить 4 - 6 определений в часOriginal Title
Ionometricheskoe opredelenie tsinka i kadmiya v splavakh
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Source
10 refs., 2 tabs.
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Journal Article
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Salyulev, A.B.; Vovkotrub, Eh.G.
XXV International Chugaev conference on coordination chemistry and II Youth conference-school Physicochemical methods in chemistry of coordination compounds. Abstracts2011
XXV International Chugaev conference on coordination chemistry and II Youth conference-school Physicochemical methods in chemistry of coordination compounds. Abstracts2011
AbstractAbstract
No abstract available
Original Title
O novykh kompleksnykh soedineniyakh tipa Me[M2Cl9] (M=Zr, Hf; Me=Cs÷Li)
Primary Subject
Source
Rossijskaya Akademiya Nauk, Moscow (Russian Federation); Otdelenie Khimii i Nauk o Materialakh RAN, Moscow (Russian Federation); Ministerstvo Obrazovaniya i Nauki RF, Moscow (Russian Federation); Nauchnyj Sovet RAN po Neorganicheskoj Khimii, Moscow (Russian Federation); Rossijskij Fond Fundamental'nykh Issledovanij, Moscow (Russian Federation); Inst. Obshchej i Neorganicheskoj Khimii im. N.S. Kurnakova RAN, Moscow (Russian Federation); Inst. Khimii Rastvorov RAN, Ivanovo (Russian Federation); Ivanovskij Gosudarstvennyj Khimiko-Tekhnologicheskij Univ., Ivanovo (Russian Federation); Rossijskoe Khimicheskoe Obshchestvo im. D.I. Mendeleeva, Moscow (Russian Federation); 562 p; ISBN 978-5-85229-397-8;
; 2011; p. 94; 25. International Chugaev conference on coordination chemistry; XXV Mezhdunarodnaya Chugaevskaya konferentsiya po koordinatsionnoj khimii i II Molodezhnaya konferentsiya-shkola Fiziko-khimicheskie metody v khimii koordinatsionnykh soedinenij; Suzdal (Russian Federation); 6-11 Jun 2011; 2. Youth conference-school Physicochemical methods in chemistry of coordination compounds; XXV Mezhdunarodnaya Chugaevskaya konferentsiya po koordinatsionnoj khimii i II Molodezhnaya konferentsiya-shkola Fiziko-khimicheskie metody v khimii koordinatsionnykh soedinenij; Suzdal (Russian Federation); 6-11 Jun 2011; 1 fig.

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Book
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Conference
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ALKALI METAL COMPOUNDS, CESIUM COMPOUNDS, CESIUM HALIDES, CHLORIDES, CHLORINE COMPOUNDS, HAFNIUM COMPOUNDS, HAFNIUM HALIDES, HALIDES, HALOGEN COMPOUNDS, LITHIUM COMPOUNDS, LITHIUM HALIDES, PHASE TRANSFORMATIONS, POTASSIUM COMPOUNDS, POTASSIUM HALIDES, REFRACTORY METAL COMPOUNDS, RUBIDIUM COMPOUNDS, RUBIDIUM HALIDES, SODIUM COMPOUNDS, SODIUM HALIDES, SPECTRA, TEMPERATURE RANGE, TRANSITION ELEMENT COMPOUNDS, ZIRCONIUM COMPOUNDS, ZIRCONIUM HALIDES
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Podgorbunskij, A.B.
VII Russian annual conference of young scientists and postgraduate students Physical chemistry and technology of inorganic materials. Collection of materials2010
VII Russian annual conference of young scientists and postgraduate students Physical chemistry and technology of inorganic materials. Collection of materials2010
AbstractAbstract
No abstract available
Original Title
Ionnaya provodimost' tverdykh ehlektrolitov na osnove ftoridov olova i svintsa
Primary Subject
Source
Tsvetkov, Yu.V. (ed.); Rossijskaya Akademiya Nauk, Otdelenie Khimii i Nauk o Materialakh, Moscow (Russian Federation); Uchrezhdenie Rossijskoj Akademii Nauk Inst. Metallurgii i Materialovedeniya im. A.A. Bajkova RAN, Moscow (Russian Federation); 540 p; ISBN 978-5-902063-48-3;
; 2010; p. 174-175; 7. Russian annual conference of young scientists and postgraduate students Physical chemistry and technology of inorganic materials; VII Rossijskaya ezhegodnaya konferentsiya molodykh nauchnykh sotrudnikov i aspirantov Fiziko-khimiya i tekhnologiya neorganicheskikh materialov; Moscow (Russian Federation); 8-11 Nov 2010; 1 fig., 1 tab.

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Book
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ALKALI METAL COMPOUNDS, CESIUM COMPOUNDS, CESIUM HALIDES, ELECTRIC CONDUCTIVITY, ELECTRICAL PROPERTIES, ELECTROLYTES, FLUORIDES, FLUORINE COMPOUNDS, HALIDES, HALOGEN COMPOUNDS, LEAD COMPOUNDS, LEAD HALIDES, LITHIUM COMPOUNDS, LITHIUM HALIDES, PHYSICAL PROPERTIES, RUBIDIUM COMPOUNDS, RUBIDIUM HALIDES, SODIUM COMPOUNDS, SODIUM HALIDES, TIN COMPOUNDS, TIN HALIDES
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Zeid, Israa; Halat, Neam; Jaber, Hawraa; Korek, Mahmoud; El-Kork, Nayla, E-mail: Mahmoud.korek@bau.edu.lb, E-mail: fkorek@yahoo.com2019
AbstractAbstract
[en] The adiabatic potential energy curves and the static dipole moment curves of the low-lying singlet and triplet electronic states in the representation 2s+1Λ(+/−) of the five alkali chloride molecules (LiCl, NaCl, KCl, RbCl and CsCl) have been investigated via ab initio calculations using the state averaged complete active space self consistent field followed by the Multi-reference single and double configuration interaction method with Davidson correction CASSCF/(MRCI + Q). For the molecules under consideration, the spectroscopic constants T e, R e, ω e and B e, the dipole moment μ e, and the dissociation energy D e have been calculated for the bound states along with the percentage ionic character f ionic around the equilibrium position of the ground state. Moreover, the transition dipole moment curves of the X1∑+–(2)1∑+ and X1∑+–(1)1Π transitions have been investigated for the five alkali chloride molecules. A rovibrational calculation was carried out using the canonical functions approach in order to determine the rovibrational constants E v, B v and D v and the abscissas of the turning points R min and R max for the investigated bound states. (paper)
Primary Subject
Source
Available from http://dx.doi.org/10.1088/1402-4896/ab2725; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
Journal
Physica Scripta (Online); ISSN 1402-4896;
; v. 94(12); [18 p.]

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ALKALI METAL COMPOUNDS, CESIUM COMPOUNDS, CESIUM HALIDES, CHLORIDES, CHLORINE COMPOUNDS, ENERGY, ENERGY LEVELS, HALIDES, HALOGEN COMPOUNDS, INFORMATION, LITHIUM COMPOUNDS, LITHIUM HALIDES, MULTIPLETS, POTASSIUM COMPOUNDS, POTASSIUM HALIDES, RUBIDIUM COMPOUNDS, RUBIDIUM HALIDES, SODIUM COMPOUNDS, SODIUM HALIDES
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AbstractAbstract
[en] We report a method for preparing uranium trichloride, UCl3, by reacting ZnCl2 with U in a molten LiCl-KCl eutectic salt at 500 °C. Cyclic voltammetry indicated the formation of UCl3 as the reaction proceeded. After 30 h, the reaction was terminated and the final product was confirmed to contain 13.2 wt% UCl3-LiCl-KCl salt by the ICP-OES method. (author)
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7 refs.
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Journal Article
Journal
Journal of Radioanalytical and Nuclear Chemistry; ISSN 0236-5731;
; CODEN JRNCDM; v. 318(3); p. 2173-2176

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