QSAR - QSAR: IEJMD - Haruo Hosoya special issue

Internet Electronic Journal of Molecular Design, http://www.biochempress.com
Email: iejmd::yahoo.com

Part 7 of the IEJMD special issue dedicated to Professor Haruo Hosoya
on the occasion of the 65th birtday is available for download from the
IEJMD Web site: http://www.biochempress.com
Professor Haruo Hosoya introduced the concept of "topological index"
and defined the Z index. His main scientific achievements are:

Pioneer of mathematical chemistry: Established new mathematical
concepts, methodologies and proof techniques for giving mathematical
meaning and interpretation to many important empirical rules in chemistry.

* Introduction of topological Index, Z (1971) (Godfather of topological index)
characterization, classification, identification of graphs
correlation of Z index with thermodynamic properties (bp, entropy, etc.)
graph-theoretical molecular orbital theory, bond order, aromaticity, etc.
QSPR study of thermodynamic properties of alkanes
 
* Introduction of counting polynomials into chemical thinking
Z-counting polynomial (1971), sextet polynomial (1975), king
polynomial (1977), Wheland polynomial (1979), rotational polynomial (1988)
  operator technique for obtaining the recursion formulas (1983)

* Graph-theoretical analysis of Hueckel molecular orbital theory
extended Hueckel rule (1975), benzene character (1980), topological
bond order (1976)

* Quantum-chemical interpretation of oxidation number and its extension
to organic molecules (1982) electron number analysis around the component
atoms of molecules using ab initio MO wavefunction

* Mathematical foundation of organic electron theory (Robinson and
Ingold) (1999) proof of the diagramamatic recipe of organic electron theory
discovery of abnormal tunneling electron transfer in large polycyclic
aromatic hydrocarbons (2001)

* Derivation of the closed formula giving the degeneracy of the angular
parts of atomic wavefunction of n-dimensional hydrogen atom (1999)

* Damping factor for rapid convergence of alternating series in the
calculation of Madelung constants (1982)

Haruo Hosoya was born in 1936, graduated from the University of
Tokyo in 1959, obtained the D.Sc. Degree (equivalent to the Ph.D. degree in
the USA) from the same university in 1964. In 1969 he was appointed
Associate Professor of Ochanimizu University (Tokyo) and in 1984 promoted to
(Full) Professor there. During 1990-1992 he served as Dean of the Faculty of
Science (to which his chemistry department belongs). In 2002 he retired
from Ochamimizu University.

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Received on 2003-04-09 - 12:53 GMT