Analogy of van't Hoff Relationship for Thermally-Accessible Lattice Strain of Copper(II) Complex

抄録

In analogy with the mathematical form of thermodynamic van't Hoff equation (lnK = －ΔH/RT +ΔS/R) for equilibrium systems, we proposed a similar relationship for thermally-accessible lattice strain of a certain copper(II) complex exhibiting anisotropic distortion. For this purpose we assumed that the degree of lattice strain plays a similar role to the equilibrium constant in the van't Hoff equation. We tested some predominant peaks of XRD patterns in the temperature range of 100 - 300 K. We found that the temperature dependence of the degree of the lattice strain was consistent with our assumption. Deviation from reasonable results was attributed to the treatment of isotropic d-values and characteristics requested by the crystal symmetry.