Frühere Forschungsgebiete der Arbeitsgruppe Haase (Prof. Haase ist im Ruhestand)

Research Interests

• Molecular Physics
• Mathematical Methods in Chemistry

Specific Research Topics

• Algebraic and quantum theoretical description of molecular properties, e.g., vibrational frequencies, electric dipole moments, polarizabilities
• Additivity rules of chemistry and their generalizations
• "Natural" molecular coordinates
• Relations between cluster properties and number theory

Selected Recent Publications

• D. Haase, H. Stachel: Almost-orthonormal vector systems.
  Beitr. Algebra Geom. (Contr. Algebra Geom.) 37 (1996) 367
• D. Haase, C. Krumrey: Estimation of fundamental frequencies of perhalogenated ethylenes in terms of molecular fragment contributions.
  J. Chem. Phys. 104 (1996) 6435
• D. Haase: Cluster expansion of molecular tensor properties: electric dipole moments of methane derivatives.
  Chem. Phys. 161 (1991) 403
• D. Haase, A. Hildebrand: Successive divisor sums.
  Amer. Math. Monthly 98 (1991) 273