Methanol, properties crystalline form

The red and orange forms of RhCl[P(C6H5)3]3 have apparently identical chemical properties the difference is presumably due to different crystalline forms, and possibly bonding in the solid. The complex is soluble in chloroform and methylene chloride (dichloromethane) to about 20 g./l. at 25°. The solubility in benzene or toluene is about 2 g./l. at 25° but is very much lower in acetic acid, acetone, and other ketones, methanol, and lower aliphatic alcohols. In paraffins and cyclohexane, the complex is virtually insoluble. Donor solvents such as pyridine, dimethyl sulfoxide, or acetonitrile dissolve the complex with reaction, initially to give complexes of the type RhCl[P(C6H6)3]2L, but further reaction with displacement of phosphine may occur. 

Methyl(p3rridine)cobaloxime is soluble in many organic solvents, e.g., in benzene, acetone, methanol, methylene chloride, and tetrahydrofuran. The solutions are stable in the dark, but on light irradiation the Co—C bond is cleaved. In crystalline form the compound is less light-sensitive, but should be stored in tinted bottles. For a detailed description of the properties of alkylcobaloximes see reference 3. 

The acetylated neolactose methyl 1,2-orthoacetate was isolated in crystalline form when the original methanol solution was evaporated in air to a sirup and triturated with ethanol. After several recrystallizations the compound (XIV) had m. p. 121-122 and [a]n -t-25.3 . It showed the reactions and properties which characterize the sugar methyl orthoacetates, including stability of the orthoacetate group toward alkaline hydrolysis. When the new compound was treated with an anhydrous 0.1 V solution of hydrogen chloride in chloroform, it was converted into the crystalline heptaacetyl-a-neolactosyl chloride. Alkaline hydrolysis also indicated the presence of six acetyl groups, whereas dilute acid removed seven. 

CAS 60-25-3. (CH3)3NC1(CH2)6NC1(CH3)3. Properties White, crystalline, hygroscopic powder faint odor. Mp 289-292C (decomposes). Very soluble in water soluble in alcohol, methanol, and n-propanol insoluble in chloroform and ether. Available commercially as unhydrated form or as dihydrate. 

Properties White, odorless, crystalline powder hygroscopic faint sweet taste. D 1.47 (—5C), mp (metastable form) 93C, (stable form) 97.5C. Soluble in water, glycerol, and propylene glycol slightly soluble in methanol, ethanol, acetic acid, phenol, and acetamide almost insoluble in most other organic solvents. Approved by FDA for food use. 

The discovery 5 th when in solution in concentrated sulfuric acid, poly aniline is in the protonated form, [B-NH-B-NH-]+ n, and that it is recovered as the partially crystalline salt, [B-NH-B-NH-]+ n(HS04 )n, from solutions in sulfuric acid O y precipitation in water or methanol) has opened the way to a more complete characterization of the polymer, and to studies directed toward the determination of the intrinsic properties of the ordered material. For example, the temperature independence of the spin susceptibility of the more highly ordered crystalline material above 125K is consistent with the Pauli spin susceptibility expected for a metal,with a density of states at the Fermi level estimated as 1 state per eV per formula unit (two rings). 

Carbon nanocoils, as well as carbon nanotubes, constitute a new class of carbon nanomaterials with properties that differ significantly from other forms of carbon. The structure of a nanocoil is similar to that of MWCNTs, except helical shape. The catalysts supported on carbon nanocoils exhibited better electrocatalytic performance compared with the catalyst supported on Vulcan XC-72 carbon. In particular, the Pt-Ru alloy catalyst supported on the CNC, which has both good crystallinity and a large surface area, showed a superior electrocatalytic performance, compared with other CNC catalysts [43]. A fuller-ene (Cso) film electrode was also suggested as a catalyst support for methanol oxidation after electrodeposition of Pt on these fullerene nanoclusters [44]. 

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