Electronic spectra of the active pi-electronic dianion of 1,4-benzoquinone and its hydrogen-bonded complex with CH3OH, generated at sequential electroreduction steps, have been discussed from the points of view of the observation techniques and n-sigma charge-transfer interaction of the dianion with a weak hydrogen donor. An improved method involving rapid circulation of the electrolyzed solution via a photodiode array detector to avoid comproportionation and side reactions was used for successful measurements of the clear spectra resulting from the dianion generation. CNDO/S-CI calculations well reproduced the longest-wavelength band observed for the dianion, assigning to the benzenoid B-1(3u)<--(1)A(g), band under D-2h symmetry. The hydrogen-bonding interaction of the 1,4-benzoquinone dianion with CH3OH allows the B-1(3u)<--(1)A(g) band to be blue-shifted. This behavior has been well explained in terms of the strong n-sigma type charge-transfer interaction of the dianion with CH3OH. These results have been extensively discussed with regard to coupled electron and proton transfer reactions in the quinone-hydroquinone redox system.
机构:
King Saud Univ, Dept Pharmaceut Chem, Coll Pharm, Riyadh 11451, Saudi ArabiaKing Saud Univ, Dept Pharmaceut Chem, Coll Pharm, Riyadh 11451, Saudi Arabia
Darwish, Ibrahim A.
Alshehri, Jamilah M.
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King Saud Univ, Women Student Med Studies & Sci Sect, Dept Pharmaceut Chem, Coll Pharm, Riyadh 22452, Saudi ArabiaKing Saud Univ, Dept Pharmaceut Chem, Coll Pharm, Riyadh 11451, Saudi Arabia
Alshehri, Jamilah M.
Alzoman, Nourah Z.
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King Saud Univ, Women Student Med Studies & Sci Sect, Dept Pharmaceut Chem, Coll Pharm, Riyadh 22452, Saudi ArabiaKing Saud Univ, Dept Pharmaceut Chem, Coll Pharm, Riyadh 11451, Saudi Arabia
Alzoman, Nourah Z.
Khalil, Nasr Y.
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King Saud Univ, Dept Pharmaceut Chem, Coll Pharm, Riyadh 11451, Saudi ArabiaKing Saud Univ, Dept Pharmaceut Chem, Coll Pharm, Riyadh 11451, Saudi Arabia
Khalil, Nasr Y.
Abdel-Rahman, Hamdy M.
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Assiut Univ, Dept Med Chem, Fac Pharm, Assiut 71526, EgyptKing Saud Univ, Dept Pharmaceut Chem, Coll Pharm, Riyadh 11451, Saudi Arabia
机构:
Kinki Univ, Dept Appl Chem, Fac Sci & Engn, Osaka 5778502, JapanKinki Univ, Dept Appl Chem, Fac Sci & Engn, Osaka 5778502, Japan
Imai, Yoshitane
Kamon, Kensaku
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Kinki Univ, Dept Appl Chem, Fac Sci & Engn, Osaka 5778502, JapanKinki Univ, Dept Appl Chem, Fac Sci & Engn, Osaka 5778502, Japan
Kamon, Kensaku
Kinuta, Takafumi
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Kinki Univ, Dept Appl Chem, Fac Sci & Engn, Osaka 5778502, JapanKinki Univ, Dept Appl Chem, Fac Sci & Engn, Osaka 5778502, Japan
Kinuta, Takafumi
Sato, Tomohiro
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JST ERATO SORST Kuroda Chiromorphol Team, Meguro Ku, Tokyo 1530041, JapanKinki Univ, Dept Appl Chem, Fac Sci & Engn, Osaka 5778502, Japan
Sato, Tomohiro
Tajima, Nobuo
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NIMS, Computat Mat Sci Ctr, Principles Simulat Grp 1, Tsukuba, Ibaraki 3050047, JapanKinki Univ, Dept Appl Chem, Fac Sci & Engn, Osaka 5778502, Japan
Tajima, Nobuo
Kuroda, Reiko
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JST ERATO SORST Kuroda Chiromorphol Team, Meguro Ku, Tokyo 1530041, Japan
Univ Tokyo, Dept Life Sci, Grad Sch Arts & Sci, Meguro Ku, Tokyo 1538902, JapanKinki Univ, Dept Appl Chem, Fac Sci & Engn, Osaka 5778502, Japan
Kuroda, Reiko
Matsubara, Yoshio
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Kinki Univ, Dept Appl Chem, Fac Sci & Engn, Osaka 5778502, JapanKinki Univ, Dept Appl Chem, Fac Sci & Engn, Osaka 5778502, Japan
机构:
Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
Lee, Sang Chul
Ueda, Akira
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Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
Ueda, Akira
Kamo, Hiromichi
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Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
Kamo, Hiromichi
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Takahashi, Kazuyuki
Uruichi, Mikio
论文数: 0引用数: 0
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Natl Inst Nat Sci, Inst Mol Sci, Okazaki, Aichi 4448585, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
Uruichi, Mikio
Yamamoto, Kaoru
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Natl Inst Nat Sci, Inst Mol Sci, Okazaki, Aichi 4448585, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
Yamamoto, Kaoru
Yakushi, Kyuya
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Natl Inst Nat Sci, Inst Mol Sci, Okazaki, Aichi 4448585, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
Yakushi, Kyuya
Nakao, Akiko
论文数: 0引用数: 0
h-index: 0
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CROSS, Res Ctr Neutron Sci & Technol, Tokai, Ibaraki 3191106, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
Nakao, Akiko
Kumai, Reiji
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KEK, Inst Mat Struct Sci, Condensed Matter Res Ctr, Tsukuba, Ibaraki 3050801, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
Kumai, Reiji
Kobayashi, Kensuke
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h-index: 0
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KEK, Inst Mat Struct Sci, Condensed Matter Res Ctr, Tsukuba, Ibaraki 3050801, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
Kobayashi, Kensuke
Nakao, Hironori
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KEK, Inst Mat Struct Sci, Condensed Matter Res Ctr, Tsukuba, Ibaraki 3050801, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
Nakao, Hironori
Murakami, Youichi
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KEK, Inst Mat Struct Sci, Condensed Matter Res Ctr, Tsukuba, Ibaraki 3050801, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
Murakami, Youichi
Mori, Hatsumi
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Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
机构:
King Saud Univ, Dept Pharmaceut Chem, Coll Pharm, Riyadh 11451, Saudi ArabiaKing Saud Univ, Dept Pharmaceut Chem, Coll Pharm, Riyadh 11451, Saudi Arabia
Darwish, Ibrahim A.
Alshehri, Jamilah M.
论文数: 0引用数: 0
h-index: 0
机构:
King Saud Univ, Women Student Med Studies & Sci Sect, Dept Pharmaceut Chem, Coll Pharm, Riyadh 22452, Saudi ArabiaKing Saud Univ, Dept Pharmaceut Chem, Coll Pharm, Riyadh 11451, Saudi Arabia
Alshehri, Jamilah M.
Alzoman, Nourah Z.
论文数: 0引用数: 0
h-index: 0
机构:
King Saud Univ, Women Student Med Studies & Sci Sect, Dept Pharmaceut Chem, Coll Pharm, Riyadh 22452, Saudi ArabiaKing Saud Univ, Dept Pharmaceut Chem, Coll Pharm, Riyadh 11451, Saudi Arabia
Alzoman, Nourah Z.
Khalil, Nasr Y.
论文数: 0引用数: 0
h-index: 0
机构:
King Saud Univ, Dept Pharmaceut Chem, Coll Pharm, Riyadh 11451, Saudi ArabiaKing Saud Univ, Dept Pharmaceut Chem, Coll Pharm, Riyadh 11451, Saudi Arabia
Khalil, Nasr Y.
Abdel-Rahman, Hamdy M.
论文数: 0引用数: 0
h-index: 0
机构:
Assiut Univ, Dept Med Chem, Fac Pharm, Assiut 71526, EgyptKing Saud Univ, Dept Pharmaceut Chem, Coll Pharm, Riyadh 11451, Saudi Arabia
机构:
Kinki Univ, Dept Appl Chem, Fac Sci & Engn, Osaka 5778502, JapanKinki Univ, Dept Appl Chem, Fac Sci & Engn, Osaka 5778502, Japan
Imai, Yoshitane
Kamon, Kensaku
论文数: 0引用数: 0
h-index: 0
机构:
Kinki Univ, Dept Appl Chem, Fac Sci & Engn, Osaka 5778502, JapanKinki Univ, Dept Appl Chem, Fac Sci & Engn, Osaka 5778502, Japan
Kamon, Kensaku
Kinuta, Takafumi
论文数: 0引用数: 0
h-index: 0
机构:
Kinki Univ, Dept Appl Chem, Fac Sci & Engn, Osaka 5778502, JapanKinki Univ, Dept Appl Chem, Fac Sci & Engn, Osaka 5778502, Japan
Kinuta, Takafumi
Sato, Tomohiro
论文数: 0引用数: 0
h-index: 0
机构:
JST ERATO SORST Kuroda Chiromorphol Team, Meguro Ku, Tokyo 1530041, JapanKinki Univ, Dept Appl Chem, Fac Sci & Engn, Osaka 5778502, Japan
Sato, Tomohiro
Tajima, Nobuo
论文数: 0引用数: 0
h-index: 0
机构:
NIMS, Computat Mat Sci Ctr, Principles Simulat Grp 1, Tsukuba, Ibaraki 3050047, JapanKinki Univ, Dept Appl Chem, Fac Sci & Engn, Osaka 5778502, Japan
Tajima, Nobuo
Kuroda, Reiko
论文数: 0引用数: 0
h-index: 0
机构:
JST ERATO SORST Kuroda Chiromorphol Team, Meguro Ku, Tokyo 1530041, Japan
Univ Tokyo, Dept Life Sci, Grad Sch Arts & Sci, Meguro Ku, Tokyo 1538902, JapanKinki Univ, Dept Appl Chem, Fac Sci & Engn, Osaka 5778502, Japan
Kuroda, Reiko
Matsubara, Yoshio
论文数: 0引用数: 0
h-index: 0
机构:
Kinki Univ, Dept Appl Chem, Fac Sci & Engn, Osaka 5778502, JapanKinki Univ, Dept Appl Chem, Fac Sci & Engn, Osaka 5778502, Japan
机构:
Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
Lee, Sang Chul
Ueda, Akira
论文数: 0引用数: 0
h-index: 0
机构:
Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
Ueda, Akira
Kamo, Hiromichi
论文数: 0引用数: 0
h-index: 0
机构:
Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
Kamo, Hiromichi
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机构:
Takahashi, Kazuyuki
Uruichi, Mikio
论文数: 0引用数: 0
h-index: 0
机构:
Natl Inst Nat Sci, Inst Mol Sci, Okazaki, Aichi 4448585, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
Uruichi, Mikio
Yamamoto, Kaoru
论文数: 0引用数: 0
h-index: 0
机构:
Natl Inst Nat Sci, Inst Mol Sci, Okazaki, Aichi 4448585, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
Yamamoto, Kaoru
Yakushi, Kyuya
论文数: 0引用数: 0
h-index: 0
机构:
Natl Inst Nat Sci, Inst Mol Sci, Okazaki, Aichi 4448585, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
Yakushi, Kyuya
Nakao, Akiko
论文数: 0引用数: 0
h-index: 0
机构:
CROSS, Res Ctr Neutron Sci & Technol, Tokai, Ibaraki 3191106, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
Nakao, Akiko
Kumai, Reiji
论文数: 0引用数: 0
h-index: 0
机构:
KEK, Inst Mat Struct Sci, Condensed Matter Res Ctr, Tsukuba, Ibaraki 3050801, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
Kumai, Reiji
Kobayashi, Kensuke
论文数: 0引用数: 0
h-index: 0
机构:
KEK, Inst Mat Struct Sci, Condensed Matter Res Ctr, Tsukuba, Ibaraki 3050801, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
Kobayashi, Kensuke
Nakao, Hironori
论文数: 0引用数: 0
h-index: 0
机构:
KEK, Inst Mat Struct Sci, Condensed Matter Res Ctr, Tsukuba, Ibaraki 3050801, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
Nakao, Hironori
Murakami, Youichi
论文数: 0引用数: 0
h-index: 0
机构:
KEK, Inst Mat Struct Sci, Condensed Matter Res Ctr, Tsukuba, Ibaraki 3050801, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
Murakami, Youichi
Mori, Hatsumi
论文数: 0引用数: 0
h-index: 0
机构:
Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, JapanUniv Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan