【摘要】 <正> Lundquist,林谦次郎等都曾用分光光度法研究了钴（II）与硫氰根的配位作用.最近,孙嘉彦等采用平衡移动法研究多级配合物体系时,log[A/(A_max—A)]=nlog[R]+logβ_n,作图应得一条曲线,只有当[R]在适当范围内才能使曲线斜率（配位比）接近整数.鉴于文献报道对硫氰酸钴（II）配合物的研究尚未完善,我们在紫外光谱区域,用改善了的方法,测定了硫氰酸钴（II）各级配合物的稳定常数和摩尔消光系数.更多还原

【Abstract】 A series of ultraviolet absorption peaks of complex [Co （SON）_n]^2-n at λ_max 298nm have been investigated in mixed DMSO-acetone-H₂O solvents. The stability constants and molar extinction coefficients of all thiocyanate cobalt complexes in the 2:3:5（V/V） DMSO-acetone-H₂O solution have been determined by the modified Yatsimirskii method to be: β₁=4.23, β₂=11.6, β₃=24.7, β₄=37.9, and △∈₁=8.27×10³,△∈₂=9.23×10³,△∈₃= 1.01×10⁴ △∈₄=1.20×10⁴ respectively （t=13.5℃, μ=1.636）.更多还原