Ulteriori informazioni
The study of crystal structures has had an ever increasing impact on many fields of science such as physics, chemistry, biology, materials science, medicine, pharmacy, metallurgy, mineralogy and geology. Particularly, with the advent of direct methods of structure determination, the data on crystal structures are accumulating at an unbelievable pace and it becomes more and more difficult to oversee this wealth of data. A crude rationalization of the structures of organic compounds and the atom coordinations can be made with the well-known Kekule model, however, no such generally applicable model exists for the structures of inorganiC and particularly intermetallic compounds. There is a need to rationalize the inorganic crystal structures, to find better ways of describing them, of denoting the geometrical relationships between them, of elucidating the electronic factors and of explaining the bonding between the atoms with the aim of not only having a better understanding of the known structures, but also of predicting structural features of new compounds.
Sommario
Symmetry relationships between crystal structures and their practical applications.- Cluster solid state chemistry: a frontier discipline between metallurgy and molecular chemistry.- Structural and bonding principles in metal halide cluster chemistry.- Modern concepts of atom coordinations, atom volume and charge transfer in intermetallic compounds.- The intergrowth concept as a useful tool to interpret and understand complicated intermetallic structures.- to the electronic structure of extended systems.- Crystal chemical formulae for inorganic structure types.- Crystal chemistry of complex sulfides (sulfosalts) and its chemical application.- The bond valence method in crystal chemistry.- Valence electron rules for compounds with tetrahedral structures and anionic tetrahedron complexes.- Structural principles of silicates, phosphates, sulphates and related structures.- Crystal chemistry of high Tc superconducting oxides..- Competition between trigonal prisms and other coordination polyhedra in borides, carbides, silicides and phosphides..
