Pseudo-Jahn-Teller Origin of the Metastable States in Sodium Nitroprusside

3Instituto de Ciencia Molecular, Universitat de Valencia, Dr. Moliner 50, 

2 State University of Moldova, Mateevich str. 60, Kishinev 2009, Moldova 3Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel 

This chapter is dedicated to Professor Isaak Bersuker on the occasion of his 75th birthday — to highlight his exceptional achievements and kudos 

During the last decade, the fascinating phenomena of the photochromic effect became a hot problem of molecular structure and spectroscopy due to its promising application in the design of new memory storage systems at the molecular level. This phenomenon has been discovered and studied in several nitrosyl complexes of transition metal ions [1-6]. At low temperatures, the most extensively studied sodium nitroprusside Na2[Fe(CN)5(NO)] 2H2Q (SNP) demonstrates two excited 

ADVANCES IN QUANTUM CHEMISTRY, VOLUME 44 ISSN 0065-3276 DOI 10.1016/S0065-3276(03)44028-8 

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Pseudo-Jahn- Teller Origin of the Metastable States in Sodium Nitroprusside... 

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