STRUCTURAL INVESTIGATION ON THE INFLUENCE OF CLATHRATION OF METAL AMINE COMPLEXES AND ITS EFFECTIVE PARAMETERS

The clathrates of Ni- and Co-Werner complexes with o-, m-, and p-xylen es were studied in order to explain the controlling factors affecting clathration. The complexes and their clathrates have been investigated using an analytical X-ray powder diffraction procedure for the struct ure determination. It was found that clathration degrades the lattice symmetry, deforms the crystal and decreases the cell volumn when accom panied by a change in the crystallographic system. The possibility of clathration increases as the cell volume of the complex (host) increas es. Lower polarity and better fitting into the complex lattice increas e selectively. Thus, clathration is strictly governed by the shape and polarity of the guest molecule rather than its volume.