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Vasiliev, A. D.
Crystal structure of hexakis(thiourea)-bis((μ-perchlorato-O,O')- (perchlorato-O)-bismuth) diperchlorate / A. D. Vasiliev, N. N. Golovnev // Russ. J. Coordin. Chem. - 2013. - Vol. 39, Is. 2. - P. 161-164, DOI 10.1134/S1070328413020097 . - ISSN 1070-3284
Кл.слова (ненормированные):
Crystallographic data -- Hydrogen atoms -- Hydrogen bond networks -- IR and Raman spectroscopy -- Space Groups -- Sulfur atoms -- Atoms -- Complex networks -- Hydrogen bonds -- Raman spectroscopy -- Single crystals -- X ray diffraction -- Thioureas
Аннотация: The complex[Bi2(Tu)6(ClO4) 4](ClO4)2 (I) (Tu is thiourea) was synthesized and studied by X-ray diffraction. The crystallographic data of I are: a = 14.205(1) A, b = 13.083(1) A, c = 22.078(2) A, ? = 96.182(1), V = 4079.1(7) A3, space group C2/c, Z = 4. The molecule is located on a twofold axis and consists of the binuclear cation [Bi2(Tu)6(ClO4)4]2+ and two outer-sphere anions Cl 4 -. The Bi-S bond lengths are 2.61-2.62 A. For each terminal and bridging ClO 4 - ion, one Bi-O distance varies from 2.744 to 3.048 3.269 structure contains a hydrogen bond network involving all hydrogen atoms. The IR and Raman spectroscopy data confirm the thiourea coordination by the sulfur atom. В© 2013 Pleiades Publishing, Ltd.

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Публикация на русском языке Васильев, Александр Дмитриевич. Кристаллическая структура диперхлората гексакис(тиомоче-вина)-бис((μ-перхлорато-О,О′)-(перхлрато-О)-висмута) [Текст] / А. Д. Васильев, Н. Н. Головнёв // Координ. химия. - 2013. - Т. 39 № 2. - С. 71-74

Держатели документа:
Russian Acad Sci, Siberian Branch, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk, Russia

Доп.точки доступа:
Golovnev, N. N.; Головнёв, Николай Николаевич; Васильев, Александр Дмитриевич
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Vasil'ev, A. D.
Crystal structure of hexakis-(N-methylthiourea) bismuth(III) triperchlorate / A. D. Vasil'ev, N. N. Golovnev, A. A. Leshok // Russ. J. Inorg. Chem. - 2012. - Vol. 57, Is. 4. - P. 525-527, DOI 10.1134/S0036023612040250. - Cited References: 12 . - ISSN 0036-0236

РУБ Chemistry, Inorganic & Nuclear
Рубрики:
THIOUREAS
Аннотация: A bismuth(III) complex of N-methylthiourea (Mtu, C2H6N2S) [Bi(C2H6N2S)6](ClO4)3 has been synthesized, and its crystal structure has been determined. The structure is built of octahedral Bi(Mtu) 6 3+ cations and ClO 4 − anions. Sulfur atoms are coordinated to bismuth(III) (at axis 2) at octahedron vertices (Bi-S, 2.7670(8), 2.8142(8), and 2.8315(8) Å); angles SBiS vary from 82.26(3)° to 96.13(2)°. The presence of amino groups and oxygen atoms in the structure results in the emergence of numerous hydrogen bonds (HBs). All H atoms of amino groups are involved in HBs; one of them is bound to the sulfur atom. One of the oxygen atoms of ClO 4 − anions does not participate in HBs.

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Публикация на русском языке Васильев, Александр Дмитриевич. Кристаллическая структура триперхлората гексакис-(N-метилтиомочевина) висмута(III) [Текст] / А. Д. Васильев, Н. Н. Головнёв, А. А. Лешок // Журн. неорг. химии : Наука, 2012. - Т. 57 № 4. - С. 587-589

Держатели документа:
[Vasil'ev, A. D.
Golovnev, N. N.
Leshok, A. A.] Siberian Fed Univ, Krasnoyarsk, Russia
[Vasil'ev, A. D.] Russian Acad Sci, Kirenskii Inst Phys, Siberian Branch, Krasnoyarsk, Russia

Доп.точки доступа:
Golovnev, N. N.; Leshok, A. A.; Васильев, Александр Дмитриевич
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    Simultaneous ion exchange recovery of platinum and rhodium from chloride solutions / O. N. Kononova [et al.] // Hydrometallurgy. - 2011. - Vol. 105, Is. 3-4. - P. 341-349, DOI 10.1016/j.hydromet.2010.11.009. - Cited Reference Count: 46 . - JAN. - ISSN 0304-386X
Рубрики:
GROUP-METALS PGM
   SEPARATION
   CATALYST
   ANION
   ADSORPTION
   EXTRACTION
   CHEMISTRY
   RESIN
Кл.слова (ненормированные):
platinum -- rhodium -- sorption -- anion exchangers -- chloride solutions -- anion exchangers -- chloride solutions -- platinum -- rhodium -- sorption -- ammonium thiocyanate -- anion exchangers -- basic parameters -- chemical structure -- chloride solutions -- diffusion coefficients -- distribution coefficient -- exchange capacities -- kinetic properties -- noble metals -- purolite -- rhodium chloride -- separation factors -- sorption ability -- work focus -- ammonium compounds -- chlorine compounds -- desorption -- hydrochloric acid -- ion exchange -- ion exchange resins -- ions -- platinum -- platinum compounds -- potassium hydroxide -- precious metals -- recovery -- rhodium -- sulfuric acid -- thioureas -- urea -- rhodium compounds
Аннотация: This work focuses on the sorption recovery of platinum (II, IV) and rhodium (III) simultaneously present in chloride solutions, freshly prepared and stored over 3 months, on commercial anion exchangers with different physical and chemical structure. The sorption was carried out from solutions with 0.001-4.0 mol/L HCl. The initial platinum and rhodium concentrations in contacting solutions were 0.25-2.5 mmol/L Sorption and kinetic properties of the chosen anion exchangers were investigated and the basic parameters of exchange capacity, recovery, distribution coefficients, separation factors, process rate, diffusion coefficients and half-exchange times were calculated. It is shown that anion exchangers investigated possess high sorption ability to platinum and rhodium chloride complexes, which does not deteriorate in case of stored solutions. Desorption of platinum and rhodium from the resins investigated was carried out with hydrochloric acid (2 mol/L), thiourea (1 mol/L) in sulfuric acid (2 mol/L) or in potassium hydroxide (2 mol/L) as well as by ammonium thiocyanate (2 mol/L). It was shown that complete separation of platinum and rhodium can be carried out with 2 mol/L HCl on anion exchanger Purolite S 985, whereas 2 mol/L NH(4)SCN as an elution agent leads to complete separation of noble metals on anion exchangers Purolite S 985, Purolite A 500 and AM-2B. (C) 2010 Elsevier B.V. All rights reserved.

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Держатели документа:
Siberian Fed Univ, Dept Chem, Krasnoyarsk 660041, Russia
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Dept, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Kononova, O.N.; Melnikov, A.M.; Borisova, T.V.; Krylov, A. S.; Крылов, Александр Сергеевич
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