Date of Birth: 02/12/1928
IAAS & # 769; to Bo & # 769; ruhovich (B.) Bers & # 769; ker (English Isaac Bersuker; p February 12, 1928, Kishinev, Bessarabia..) - Moldavian Soviet and American physical chemist. Director of the Laboratory of Quantum Chemistry (1959-1993) and member of the Academy of Sciences of Moldova (1989), Professor of Chemistry and the Institute of Theoretical Chemistry, University of Texas at Austin (United States, 1993).
Isaac (Izzy) Bersuker born in Chisinau (then a part of the Romanian Bessarabia) in 1928, one of four children in the family of a carpenter and a housewife. During the Great Patriotic War - with the mother in the evacuation of Azerbaijan, on the work of the farm. In 1945 the family returned to Kishinev, where Bersuker finished night school, he studied at the commercial college, and in 1947 he entered the Physics and Mathematics Faculty of the Kishinev State University (studied in the same group with the future academician VA Kowarski).
After graduation in 1952 he entered graduate school at the Leningrad State University. In 1953 he was sent to a teaching job in Soroca Teacher Training Institute, and after its dissolution - in the pedagogical institute in Balti. At the same time, I prepared and defended at the Leningrad University kan didatskuyu thesis (1957), and in 1964 - his doctoral thesis there.
In 1959 Bersuker was hired senior fellow at the Institute of Chemistry at the Moldavian branch of the Academy of Sciences of the USSR, where he created a group of quantum chemistry. In 1964 he headed the now Department of Quantum Chemistry (since 1977 - Laboratory of quantum chemistry), which he headed until 1993. He taught theoretical chemistry and molecular structure in the State University of Moldova. Corresponding Member of the Academy of Sciences of the Moldavian SSR (1972), Academy of Sciences of the Moldavian SSR (1989).
Since 1993 - the United States, Professor, Department of Chemistry and Biochemistry and Institute of Theoretical Chemistry (Institute for Theoretical Chemistry), University of Texas at Austin. Laureate of the State Prize of the Moldavian SSR in the field of science and technology (1979), awarded the Honorary Order (Ordinul de onoare) Republic of Moldova (2004), Chugaeva medal of the Russian Academy of Sciences (2004) and the Medal of Ben-Gurion University of the scientific achievements (Israel, 2005).
Basic research in the area of ??influence of the polarization of the electronic coverage of atoms and molecules on the possibility of switching optical or valence electrons (effect pseudo-Jahn-Teller effect Renner-Teller effect). Proposed (1960-1962) and confirmed (1972) phenomenon of tunneling splitting of energy levels of polyatomic systems in electron degeneracy condition (so-called Jahn-tellerovyh systems). 
Isaac Bersuker - author of 12 books, printed in the Soviet Union and the United States, and withstood a number of reprints.
Son Bersuker - Gennadiy Isaakovich Bersuker (SEMATECH, Austin, USA) - the author of scientific works in the field of semiconductor physics.
The chemical bond in complex compounds (together with AV Ablova). Shtiintsa: Chisinau 1962.
Structure and properties of coordination compounds: Introduction to the theory. Publisher "Chemistry", Leningrad branch of Leningrad, 1971.
Tunnel effects in polyatomic systems with electronic degeneracy and pseudodegeneracy (with BG Waechter and IJ Ogurtsov). In a series of "Advances of Physical Sciences", Volume 116, Issue 4. Science: Moscow, 1975.
Dictionary of Physics (together with Boris Vasilyev). Shtiintsa: Chisinau, 1976.
Electronic structure isvoystva coordination compounds: Introduction to the theory (see full text here.). 2nd edition, revised and enlarged. "Chemistry", Leningrad branch: Leningrad, 1976.
Vibronic interaction in molecules and crystals (in conjunction Polingerom VZ). Science: Moscow 1983.
The Jahn-Teller Effect and Vibronic Interactions in Modern Chemistry. Plenum: New York, 1984.
The Jahn-Teller Effect: A Bibliographic Review. IFI-Plenum: New York, London, 1984.
Electronic structure and properties of coordination compounds: Introduction to the theory. 3rd edition, revised and enlarged. "Chemistry", Leningrad branch of Leningrad, 1986.
Jahn-Teller effect and vibronic interaction in modern chemistry. Science: Moscow, 1987.
Vibronic Interactions in Molecules and Crystals (in conjunction with VZ Polingerom). Springer: New York, 1989.
Electronic Structure and Properties of Transition Metal Compounds: Introduction to Theory (electronic structure and properties of transition metal compounds: An introduction to the theory). John Wiley & Sons: New York, 1996.
The Jahn-Teller Effect. Cambridge University Press: Cambridge, 2006.