Molten state coordination

X-ray diffraction, 929 Cadmium(I) complexes, 989 Cadmium halides, 981 molten state coordination, 981 solution chemistry, 893 Cadmium hydrides, 931 ammonia, 931... 

The third step consisted of the direct investigation of IR emission spectra for a wide range of concentrations. The investigation showed the tendency of the metals to reduce their coordination number when moving from solid to molten state. This property of the melt depends on the equilibrium between two types of complex ions, MeF72 and MeF6 ... 

Every component of the MX-MeX2 mixture in its pure molten state possesses a certain structure, defined by an average number of afoms in the first and second coordination spheres. The M+ cations are surrounded in the first coordination sphere by X anions and have M+ cations in their second coordination sphere. The same situation applies to the molten MeX2 component. 

The first term of Eq 2.48 is the H-F combinatorial entropy. The second term (where the subscript v indicates the free volume fraction) represents the free volume contribution to the entropy of mixing. The third term represents the non-combinatorial contribution [g ((t) ) is the non-combinatorial energy on a molten state of polymer i having the free volume fraction (()y]. The fourth term represents the energetic contribution originating from interaction between unlikely species, i j. Here gj.( (()j ) is the interaction term expressed as polynomial with coefficients that depend on the structure of the polymer chains. These coefficients are computed as double expansions in 1/z ( z is the lattice coordination number), and e jj/kgT (e j is the van der Waals interaction energies between groups a and b). 

Typical metals have high coordination numbers (12 or 8 in the crystalline state) and these numbers are hardly affected by the melting. The electrical conductivity of metals usually decreases by up to 50% in the molten state. This observation alone is sufficient as a demonstra-... 

J. Tetrahedral Co Complexes Below Tg and 3-Coordinate Complexes in the Molten State... 

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