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Abstract
The complex from reaction of neodymium chloride six-hydrate with salicylic acid and 8-hydroxyquinoline, Nd(C7H5O3)2·(C9H6NO), was synthesized and characterized by IR, elemental analysis, molar conductance, and thermogravimatric analysis. The standard
molar enthalpies of solution of [NdCl3·6H2O(s)], [2C7H6O3(s)], [C9H7NO(s)] and [Nd(C7H5O3)2·(C9H6NO)(s)] in a mixed solvent of anhydrous ethanol, dimethyl formamide (DMF) and perchloric acid were determined by calorimetry at
298.15 K. Based on Hess’ law, a new chemical cycle was designed, and the enthalpy change of the reaction
((1))
Abstract
The product from reaction of samarium chloride hexahydrate with salicylic acid and Thioproline, [Sm(C7H5O3)2·(C4H6NO2S)]·2H2O, was synthesized and characterized by IR, elemental analysis, molar conductance, and thermogravimetric analysis. The standard
molar enthalpies of solution of [SmCl3·6H2O(s)], [2C7H6O3(s)], [C4H7NO2S(s)] and [Sm(C7H5O3)2·(C4H7NO2S)·H2O(s)] in a mixed solvent of absolute ethyl alcohol, dimethyl sulfoxide(DMSO) and 3 mol L−1 HCl were determined by calorimetry to be Δs
H
m
Φ[SmCl3 δ6H2O (s), 298.15 K]= −46.68±0.15 kJ mol−1 Δs
H
m
Φ[2C7H6O3 (s), 298.15 K]= 25.19±0.02 kJ mol−1, Δs
H
m
Φ[C4H7NO2S (s), 298.15 K]=16.20±0.17 kJ mol−1 and Δs
H
m
Φ[Sm(C7H5O3)2·(C4H6NO2S)]·2H2O (s), 298.15 K]= −81.24±0.67 kJ mol−1. The enthalpy change of the reaction
((1))
, there is an urgent need for relevant thermodynamic data of sodium isophthalic acid derivatives. In this article, we synthesized sodium 5-methylisophthalic acid monohydrate (C 9 H 6 O 4 Na 2 ·H 2 O, s) and sodium isophthalic acid hemihydrate (C 8
Abstract
A microfluidic technique for combinatorial chemical synthesis of peptidomimetics has been developed. The new method is fast, automated and includes an integrated magnetic separation of inorganic catalysts from reaction products. This proof-of-concept study should lead to methods for generating libraries of compounds suitable for screening for bioactivity.
formation of a yellow solid anticipated as KC 9 H 6 ON was observed. It was filtered and the filtrate was distilled off to remove excess of solvent. The concentrate was then dried under vacuum by treating it with petroleum ether whereupon black-, green- and
complexes in the lanthanide series. Experimental Preparation of Ln 2 (C 12 H 6 O 4 ) 3 · n H 2 O Due to insolubility of 2,3-naphthalenedicarboxylic acid in water, we prepared its ammonium salt (pH = 5.8) to
900489g . 12. Dinca , M , Long , JR 2005 Strong H-2 binding and selective gas adsorption within the microporous coordination solid Mg-3(O2C–C10H6–CO2)(3) . J Am Chem Soc 127 : 9376
8-hydroxyquinoline (oxine) and uranyl acetate react in the solid state in 1∶3 stoichiometry to give UO2(C9H6NO)2·C9H6NOH. This reaction is diffusion controlled with an activation energy of 44.4 kJ mol−1. The reaction occurs by the surface migration of 8-hydroxyquinoline, which penetrates the product lattice to react with uranyl acetate. The isothermal decomposition of the solution phase product UO2Q2·HQ (Q=C9H6NO) obeys the Prout-Tompkins equation with an energy of activation of 53.3 kJ mol−1.
-source precursor[Pb(H 2 O) 3 ] 2 [Ti 2 (O 2 ) 2 O(NC 6 H 6 O 6 ) 2 ]·4H 2 O ( 1 ) The flowchart for synthesis of compound 1 and PbTiO 3 material is summarized in Scheme 1 . To the suspension of H 3 nta (9.57 g, 50 mmol) in 50 mL of deionized water was
Abstract
Solubility and pH precipitation studies were carried out to obtain the binuclear complex {[TiO(C9H6NO)2][Sn(C9H6NO)2]} involving 8-hydroxyquinoline as chelating agent. The compound, the individual mononuclear complexes and their physical mixture were evaluated by means of techniques such as TG, DTA, elemental analysis, X-ray diffraction, IR spectroscopy. The properties of the original compounds and also the thermoanalytical conditions exerted a great influence on the degree of crystallinity and on the crystalline phase of the mixed oxide obtained as final product of the thermal decomposition.
