title: [Study on the reaction between cobalt tetrasulphonated phthalocyanine and sodium sulfide].
abstract: A new method which uses multi-wave number and double-parameter to analyse the UV-Vis. spectra is proposed to determine the composition and stabilization constants of coordination compounds. With this method, the reaction of cobalt tetrasulphonated phthalcyanine [CoTsPc] and sodium sulfide [Na2S] was studied. The result shows that pH of the medium has great effect on the reaction. A five coordinated compound Co(II)TsPc(HS) was formed at pH = 7.0. The equilibrium constants and thermodynamics are reported for the reaction under that condition. At higher pH, a redox-reaction took place and a five coordinated compound with the oxidation number I for cobalt [SCo(I)TsPc] was found.
authors.affiliation: Chemistry and Chemical Engineering College, Yangzhou University, Yangzhou 225002, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Liu
authors.forename: Tao
authors.initials: T
authors.lastname: Ye
authors.forename: Rong
authors.initials: R
authors.lastname: Guo
mesh_terms: D003035:Cobalt / Q000737:chemistry*; D004563:Electrochemistry / Q000379:methods; D004578:Electron Spin Resonance Spectroscopy / Q000379:methods; D005290:Ferric Compounds / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007211:Indoles / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet / Q000379:methods*; D013440:Sulfides / Q000737:chemistry*; D013816:Thermodynamics
chemical_list: D005290:Ferric Compounds; D007211:Indoles; D009942:Organometallic Compounds; D013440:Sulfides; C063633:cobalt phthalocyanine; D003035:Cobalt; D010100:Oxygen; C033479:sodium sulfide