Solids mixing statistical characterization

All the examples so far have been homonuclear. Complexes (14) provide examples of hetero-nuclear di- -OH cations, with M = Cu, Mn, Co, Ni or Zn, in solution.73 NiI+/Al3+ dimers with di- -OH have been characterized in the solid state, and may well also exist in solution.74 Although cocrystallization of cobalt and chromium hydroxo complexes normally gives the statistically expected mixture of Co2, Cr2 and CoCr di-/i-OH species (difficult to separate), if optically active starting materials are used a very high yield of the mixed dinuclear species [(en)2Cr(jt-OH)2Co(en)2]4+ can be obtained. 

The main barrier to isolation of a mixed-ligand cluster is its substitutional lability, which can lead to statistical disproportionation. Thus, site-differentiated clusters 29 and 30, which have been trapped as sparingly soluble Ph4P salts and structurally characterized in the solid state (102, 103),... 

Chebotin s scientific interests were characterized by a variety of topics and covered nearly all aspects of solid electrolytes electrochemistry. He made a significant contribution to the theory of electron conductivity of ionic crystals in equilibrium with a gas phase and solved a number of important problems related to the statistical-thermodynamic description of defect formation in solid electrolytes and mixed ionic-electronic conductors. Vital results were obtained in the theory of ion transport in solid electrolytes (chemical diffusion and interdiffusion, correlation effects, thermo-EMF of ionic crystals, and others). Chebotin paid great attention to the solution of actual electrochemical problem—first of all to the theory of the double layer and issues related to the nature of the polarization at the interface of the solid electrol34e and gas electrode. 

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