Application of the Davidon-Fletcher-Powell method to the calculation of stability constants.
The Davidon-Fletcher-Powell method of function minimization has been modified and successfully applied to the calculation of stability constants of species of the type H(p)M(q)L(r) in solution. It is shown that the refinement with respect to the logarithms of the stability constants is intrinsically ill-conditioned, leading to convergence difficulties when poor initial parameter estimates are used, and to failures when one or more parameters are experimentally indeterminate.
Gans
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Laboratorio C.N.R., Istituto di Chimica Generale dell'Universitá, Via J. Nardi 39, 50132 Firenze, Italy.
Vacca
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