The aim of my research in inorganic chemistry and solid state chemistry is the use of quantum mechanical methods of VASP, tight-binding, and ab initio, DFT or TDDFT for the rationalization of the electronic structures of any chosen model. We take specific problems from the experimental literature of chemistry, physics, material and surface science, solve outstanding problems of electronic and geometrical structure and reactivity, make suggestions for synthesis, and construct frameworks of understanding of bonding for the experimental community. The publication list attached contains the achievements of my research activity. My recent research problems are at the end of the following list of publication.