74963-79-4Relevant academic research and scientific papers
Amine templated open-framework vanadium(iii) phosphites with catalytic properties
Orive, Joseba,Larrea, Edurne S.,Fernandez De Luis, Roberto,Iglesias, Marta,Mesa, Jose L.,Rojo, Teofilo,Arriortua, Maria I.
, p. 4500 - 4512 (2013)
Four novel amine templated open-framework vanadium(iii) phosphites with the formula (C5N2H14)0.5[V(H 2O)(HPO3)2], 1 (C5N 2H14 = 2-methylpiperazinium), and (L)4-x(H 3O)x[V9(H2O)6(HPO 3)14-y(HPO4)y(H2PO 3)3-z(H2PO4)z] ·nH2O (2, L = cyclopentylammonium, x = 0, y = 3.5, z = 3, n = 0; 3, L = cyclohexylammonium, x = 1, y = 0, z = 0.6, n = 2.33; 4, L = cycloheptylammonium, x = 1, y = 0, z = 0, n = 2.33) were synthesized employing solvothermal reactions and characterized by single-crystal X-ray diffraction, ICP-AES and elemental analyses, thermogravimetric and thermodiffractometric analyses, and IR and UV/vis spectroscopy. Single-crystal data indicate that 1 crystallizes in the triclinic system, space group P1, whereas 2, 3 and 4 crystallize in the hexagonal space group P63/m. Compound 1 has a two-dimensional motif with anionic sheets of [V(H2O)(HPO 3)2]- formula, whose charge is compensated by the 2-methylpiperazinium cations embedded between the layers. In contrast, 2, 3 and 4 present a pillar-layer network giving rise to a three-dimensional framework containing intersecting 16-ring channels with the primary amine templates and the crystallization water molecules enclosed in them. 1, 2, 3 and 4 behave as heterogeneous catalysts for the selective oxidation of alkyl aryl sulfides, with tert-butylhydroperoxide (TBHP) as the oxidizing agent, being active, selective and recyclable for several successive cycles of reaction. The Royal Society of Chemistry 2013.
Electrochemical oxidation of carboxylic acid anions in the presence of some mono- and di-subsituted olefins
Champagne, Philippe J.,Renaud, Roger N.
, p. 1101 - 1105 (2007/10/02)
The anodic oxidation of the sodium salts of acetic, propionic, and isovaleric acids was performed in the presence of a series of ethylenic compounds bearing electron-withdrawing substituents.The results showed that under certain experimental conditions the electrogenerated radicals added to the ethylenic double bond to give mainly 1,2-dialkylated products.The stereoisomers obtained were separated and whenever possible, identified.Their physical properties are reported.
