13454-84-7Relevant academic research and scientific papers
Conductometric, Viscometric, and Spectroscopic Investigations on the Solvation Phenomena of Alkali-Metal Ions and Ion Pairs in 2-Methoxyethanol
Das, Bijan,Hazra, Dilip K.
, p. 269 - 273 (1995)
Precise measurements on electrical conductances, relative viscosities, and laser-Raman spectra of solutions of some alkali-metal salts in 2-methoxyethanol (ME) have been reported.The conductance data were analyzed by the 1978 Fuoss conductance equation an
An improved method for product separation in metathetical reactions and its demonstration for the synthesis of anhydrous cesium salts
Haiges, Ralf,Christe, Karl O.
, p. 1717 - 1718 (2008/10/08)
In conventional metathetical reactions, product separation is based on solubility product differences, and the resulting products are often impure and require purification by recrystallization. A new approach to product separation is described that relies on the formation of an unstable, volatile by-product, such as NH4+CH3O-. This method provides very pure and anhydrous products in high yield and was demonstrated successfully for the syntheses of anhydrous cesium salts.
N,N-Dimethylthioamidecyanooximato Nickel(II) Complex Containing a Saturated Tetraamine Macrocycle, [Ni[13]aneN4{ONC(CN)C(S)N(CH3)2}]CIO 4: Synthesis, Spectra, and Structure
Domasevich,Ponomareva,Skopenko,Zan,Siler
, p. 1014 - 1018 (2008/10/08)
The complex Ni[13]aneN4){TDCO}]CIO4, where [13]aneN4 is 1,4,7,10-tetraazacyclotridecane, and {TDCO-} is N,N-dimethylthioamidecyanooximato ion {ONC(CN)C(S)N(CH3)2}-, was synthesized and characterized by IR and electronic spectroscopy and X-ray diffraction. The complex is triclinic, space group P1?, with a = 9.619(2) ?, b = 9.929(2) ?, c = 11.827(2) ?, α = 99.37(3)°, β = 97.71(3)°, γ = 95.99(3)°, Z = 2, V = 1095.2(4) ?3, pcalc = 1.518 g/cm3. The structure was refined to R = 0.057 and wR2 = 0.142. The structure is ionic and consists of Ni[13]aneN4){TDCO}]+ complex cations and ClO4- anions. The central atom has slightly distorted octahedral coordination. The acido ligand is coordinated through the nitroso nitrogen and thioamide sulfur to form a five-membered chelate ring (Ni-N 2.072(4) ?, Ni-S 2.389(2) ?). The tetraaza macrocycle adopts the bent conformation and is coordinated via four nitrogen atoms, two in the equatorial plane and two in axial positions (Ni-N 2.069(4)-2.139(4) ?).
Transfer Gibbs energies for ClO3-, BrO3-, IO3-, ClO4- and IO4- anions for water-methanol and water-propan-2-ol mixtures: Some quantum-chemical aspects of ionic solvation
Benko, Jan,Vollarova, Ol'ga,Cernusak, Ivan,Pappova, Adriana
, p. 4935 - 4941 (2007/10/03)
The transfer Gibbs energies, ΔtrsG°, of KClO3, KBrO3, KIO3, KClO4, KIO4 and the corresponding caesium salts have been obtained through gravimetric measurements of the solubility in aqueous mixtures with methanol (MeOH) and propan-2-ol (PriOH) at 298.2 K. In addition, the solubility of Ph4P(pic) (pic = picrate anion) as well as K(pic) and KBPh4 and the corresponding caesium salts are reported in these mixtures at 298.2 K. Single-ion values of ΔtrsG° have been calculated using the tetraphenylphosphonium tetraphenylborate (TPTB) assumption. The semiempirical quantum-chemical AM1 method was used for calculations of interaction energy of BPh4- and Ph4P+ with a series of five solvent molecules and energy demands associated with a deformation of these ions. Trends observed for ΔtrsG° are discussed in terms of specific ion-solvent interactions and the structural effect of solvent mixtures.
The heat of dissolution of CsClO4 in mixtures of water and glycols
Manin,Krasnoperova,Korolev
, p. 545 - 550 (2007/10/03)
The enthalpies of solution of CsClO4 (m = 0.002-0.02) in aqueous solutions of mono-, di-, tri-, and tetraethylene glycols and polyethylene glycols 300,400, and 600 with glycol contents up to 30 wt % were determined at 298.15 K using an isotherm
