|Budget Amount *help
¥2,000,000 (Direct Cost : ¥2,000,000)
Fiscal Year 1995 : ¥300,000 (Direct Cost : ¥300,000)
Fiscal Year 1994 : ¥1,700,000 (Direct Cost : ¥1,700,000)
The benzoquinone-hydrobenzoquinone complex (quinhydrone) is a DA-type CT-complex which exist as one-dimensional hydrogen bonded networks. Vibrational spectra suggest that in this complex, a proton and an electron are cooperatively transferred (PET) to give semiquinone radicals under conditions of high pressure.
To better understand this PET type phase transition at the molecular level, we have undertaken ab-initio molecular orbital calculations of this system using the UHF/3-21G^</*> basis set. Semi qualitative basic properties, such as optimized molecular geometries, electronic structures, and molecular energies were calculated for relevant quinone related model species (hydroquinone, quinone, hydroquinone cation radical, quinone anion radical, semiquinone anion, semiqunione cation, semiquinone radical, semiquinone dimer, hydrogen bonded hydroquinone-quinone complex, etc.).
また、Hydrogen-Bonded Charge-Transfer(HBCT) システムとして、lumazineや、pterin、ethylenediaminoglyoxime等を配位子とした新規遷移金属錯体の合成にも成功し、そのX線結晶解析も行い結晶内における水素結合様式についての知見を得ることができた。