Analyses of three-way data from equilibrium and kinetic investigations

In kinetic or equilibrium investigations it is common to measure two-way multiwavelength data, e.g. absorption spectra as a function of time or reagent addition. Often it is advantageous to acquire experimental data at various initial conditions or even on different instruments. A collection of these measurements can be arranged in three-dimensional arrays, which can be analysed as a whole under the assumption of a superimposed function, e.g. a kinetic model, and/or common properties of the subsets, such as molar absorptivity. As we show on selected formation equilibria (Zn2+/phen) and kinetic studies (Cu2+/cyclam) from our own research, an appropriate combination of multivariate data can lead to an improved analysis of the investigated systems. Crown Copyright (C) 2003 Published by Elsevier B.V. All rights reserved.