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Ionization equilibria of nickel(II) bromide in acetonitrile solutions

✍ Scribed by Wlodzimierz Libus; Waca̵w Grzybkowski

Publisher
Elsevier Science
Year
1978
Tongue
English
Weight
609 KB
Volume
23
Category
Article
ISSN
0013-4686

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✦ Synopsis

Abslrati -Uv

and visible absorption spectra and the molar conductance curve of NiBr, in acetonitrile solution have been determined at 25°C. Equilibrium concentrations and formation constants of the consecutive NiBr+, NiBri, and NiBr;, complexes have been calculated from the spectrophototnetric results making use of the isosbestic points found in an auxiliary study of three-component solutions with variable Br-: Ni(l1) mole ratio. The existence ofNiBr+ in the form of the [NiBrL,]+ pseudooctahedral complex, and that of NiBr; in the form ofthe piBr,L] -pseudotetrahedral complex is inferred, while the nature of NiBri remains uncIear. INTRODU~ON

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