2720-73-2Relevant articles and documents
Synthesis and characterization of the adducts of bis(O-amyldithiocarbonato) nickel(II) with nitrogen donors and X-ray structure of bis(O- amyldithiocarbonato)bis (3,5-dimethylpyridine)nickel(II)
Singh, Kuldeep,Neerupama,Kour, Inderjeet,Sachar, Renu,Gupta, Vivek K.,Rajnikant, Verma
, p. 1176 - 1181 (2012)
A series of complexes with general formula M(Xan)2L2 (M = Ni(II), Xan = O-amyldithiocarbonato, L = 3-methylpyridine, 2,4-; 3,4-; 3,5-dimethylpyridines and 2,4,6-trimethylpyridine) have been synthesized and characterized by elemental analysis and various physico-chemical techniques such as magnetic susceptibility measurements, conductivity measurements, UV-Visible, Infrared spectral data. On the basis of electronic spectra and magnetic susceptibility measurements, an octahedral geometry has been proposed for all the complexes. IRspectral data shows that the substituted pyridines in all these complexes coordinate to the metal ion through nitrogen atoms occupying fifth and sixth axial positions where as O-alkyldithiocarbonate act as monoanion bidentate ligand and occupy the planar positions of octahedral structures. The X-ray diffraction analysis of one of the adducts bis(O-amyldithiocarbonato) bis(3,5-dimethylpyridine) nickel(II) is also investigated. The complex crystallizes in the monoclinic space group P21/c with unit cell parameters a = 9.167(2) A, b = 18.255(4) A, c = 9.299(2) A and β = 103.47(2)°. The dihedral angle between dithio-groups and the pyridine ring is 88.9(1)°. The crystal structure of the molecule is stabilized by π-π interactions. Springer Science+Business Media New York 2012.
Production method of high-grade potassium xanthate
-
Paragraph 0022-0024; 0089-0111, (2020/09/12)
The invention discloses a production method of high-grade potassium xanthate. The specific process of the method is as follows: mixing alcohol and flaky alkali, crushing and stirring to obtain a mixedsolution; transferring the mixed solution into a reaction kettle, slowly dropwise adding carbon disulfide, controlling the temperature of the system in the reaction kettle to be 30-35 DEG C in the dropwise adding process, continuously carrying out heat preservation reaction at 30-35 DEG C, and sequentially removing alcohol and drying the reacted system to obtain potassium xanthate. The preparation method comprises the following steps: adding flaky alkali into alcohol and carrying out wet crushing; so that the reaction is promoted, side reactions are reduced, and the conversion rate of materials is increased the grade of the potassium xanthate is increased to 95% or above, the problem that the grade of the potassium xanthate synthesized in the prior art is low is solved, an alkali grindingprocess is avoided, safe production is realized, and the environmental protection and safety pressure is reduced.
VIBRATIONAL ANALYSIS OF ALKYL XANTHATES
Colthup, N. B.,Powell, L. Porter
, p. 317 - 322 (2007/10/02)
Rotational isomers are indicated in the Raman spectra of sodium ethyl and other xanthates.Vibrational bands useful for characterizing xanthate solids and aqueous solutions are given.Vibrational analyses are reported for sodium ethyl xanthate, trans and gauche forms, and the methyl and isopropyl analogs using a Cartesian coordinate force field derived from ab initio molecular orbital calculations.
