研究者業績

高尾(稲垣) 昭子

イナガキ アキコ  (Akiko Takao (Inagaki))

基本情報

所属
成蹊大学 理工学部 理工学科 教授
学位
博士(工学)(東京工業大学)

通称等の別名
稲垣 昭子
ORCID ID
 https://orcid.org/0000-0001-9113-5602
J-GLOBAL ID
200901093551976145
researchmap会員ID
5000039843

外部リンク

研究キーワード

 3

主要な論文

 58

MISC

 38
  • Akiko Inagaki, Munetaka Akita
    COORDINATION CHEMISTRY REVIEWS 254(11-12) 1220-1239 2010年6月  
    Visible-light promoted molecular transformations catalyzed by bimetallic species containing a [Ru(bipy)(3)](2+) (TB)-like fragment as the photosensitizing unit are reviewed. Catalytic reactions are classified according to the following two criteria: (1) electron transfer (A)/energy transfer (B) from TB and (2) intra- (I) and inter-molecular catalyst systems (II). Reactions promoted by electron transfer (A) involve reductive processes such as W-reduction giving H(2) and CO(2)-reduction giving CO, which have been extensively studied also by using mononuclear catalysts. The catalytic H(+)- and CO(2)-reductions have been considerably improved by the use of II-A- and I-A-type bimetallic catalysts, respectively. Furthermore, as recently reported by our research group, photocatalysis is extended to organic transformations, which have been much less explored compared to transformations of small inorganic molecules mentioned above. While Sonogashira coupling is mediated by II-A-type catalysts, up-hill trans-to-cis isomerization of cyanostilbene and dimerization of alpha-methylstyrene follow the energy transfer processes (B). Thus new aspects of the photochemical bimetallic catalysis have been unveiled as mentioned above but catalyst design is still in its infancy. Continued accumulation of reaction data and mechanism analysis will lead to development of practical bimetallic photocatalysts, which promote unique reactions including up-hill reactions. (C) 2009 Elsevier B.V. All rights reserved.
  • Kazunori Uchida, Akiko Inagaki, Munetaka Akita
    ORGANOMETALLICS 26(20) 5030-5041 2007年9月  
    A series of organoruthenium complexes containing photochromic 1,2-di(2-methylthien-3-yl)-3,3,4,4,5,5-hexafluorocyclopentene fragments (DTE), DTE-(RRuLm)(n) (RRuLm = (eta(6)-C6H5)Ru(eta(5)-C5Me5) (I): n = 1 (3), 2 (4); (eta(6)-C6H5)RuCl2(PPh3) (II): n = 1 (10), 2 (11); (eta(5)-C5Me4)Ru(CO)(2) (III): n = 1 (25), 2 (24); substituted at the 5-position of the thiophene ring), are prepared and characterized by H-1 NMR and UV-vis spectroscopy, and molecular structures of the 1:2 adducts 4, 11, and 24 are determined by X-ray crystallography, which reveals the antiparallel conformation of the two thiophene rings suitable for photocyclization, causing the photochromism. It is revealed that the metalated DTE derivatives show photochromic behavior through the photochemical, electrocyclic conrotatory ring-closing and -opening processes in a manner analogous to the organic counterparts, but the efficiency of the photochromic processes is dependent on the attached metal fragments. The cationic Cp*Ru(eta(6)-arene)-type (I) and neutral Cp*Ru(CO)(2)Cl-type complexes (III) show photochromic behavior (content of the closed isomers at the UV photostationary states: 25-88%), and subsequent visible light irradiation of the equilibrated mixtures reverts the process to afford the open forms quantitatively. The ring-closing and -opening processes are reversible and can be repeated without notable deterioration. As for the series of Ph derivatives of I (1, 3, and 4), metalation improves the efficiency of the ring-closing process. In contrast to these derivatives, no significant photochromic behavior is noted for the benzo-fused derivatives of I, and UV irradiation of II (10 and 11) causes irreversible dissociation of the arene ligand (DTE).
  • Kazunori Uchida, Akiko Inagaki, Munetaka Akita
    ORGANOMETALLICS 26(20) 5030-5041 2007年9月  
    A series of organoruthenium complexes containing photochromic 1,2-di(2-methylthien-3-yl)-3,3,4,4,5,5-hexafluorocyclopentene fragments (DTE), DTE-(RRuLm)(n) (RRuLm = (eta(6)-C6H5)Ru(eta(5)-C5Me5) (I): n = 1 (3), 2 (4); (eta(6)-C6H5)RuCl2(PPh3) (II): n = 1 (10), 2 (11); (eta(5)-C5Me4)Ru(CO)(2) (III): n = 1 (25), 2 (24); substituted at the 5-position of the thiophene ring), are prepared and characterized by H-1 NMR and UV-vis spectroscopy, and molecular structures of the 1:2 adducts 4, 11, and 24 are determined by X-ray crystallography, which reveals the antiparallel conformation of the two thiophene rings suitable for photocyclization, causing the photochromism. It is revealed that the metalated DTE derivatives show photochromic behavior through the photochemical, electrocyclic conrotatory ring-closing and -opening processes in a manner analogous to the organic counterparts, but the efficiency of the photochromic processes is dependent on the attached metal fragments. The cationic Cp*Ru(eta(6)-arene)-type (I) and neutral Cp*Ru(CO)(2)Cl-type complexes (III) show photochromic behavior (content of the closed isomers at the UV photostationary states: 25-88%), and subsequent visible light irradiation of the equilibrated mixtures reverts the process to afford the open forms quantitatively. The ring-closing and -opening processes are reversible and can be repeated without notable deterioration. As for the series of Ph derivatives of I (1, 3, and 4), metalation improves the efficiency of the ring-closing process. In contrast to these derivatives, no significant photochromic behavior is noted for the benzo-fused derivatives of I, and UV irradiation of II (10 and 11) causes irreversible dissociation of the arene ligand (DTE).
  • Gou Higashihara, Masako Terada, Akiko Inagaki, Munetaka Akita
    ORGANOMETALLICS 26(2) 439-444 2007年1月  
    A tetranuclear C-2 (dicarbide) cluster complex with a permetallated ethene structure, (mu(4)-CC)Ru-2(FeCp*)(2)(CO)(10) (2), reacts with alkynes in refluxing THF to give a variety of adducts resulting from C-C coupling and oxidative metallacyclization with the C-2 ligand in addition to a unique mu(4)-dicarbyne complex with a dimetallacyclobutatriene core, (mu(4)-C-C)Ru-2(FeCp*)(2)(CO)(6)(mu-eta(2):eta(2)-PhCCPh). The reactions are initiated by decarbonylation, as confirmed by the reactions of an isolated, labile species lightly stabilized by MeCN, (mu(4)-CC)Ru-2(FeCp*)(2)(CO)(8)(NCMe)(2), which undergoes the reactions at room temperature and provides the same types of products as those obtained from 2.
  • Yuya Tanaka, Takehiro Ozawa, Akiko Inagaki, Munetaka Akita
    DALTON TRANSACTIONS (9) 928-933 2007年  
    Redox active polyiron complexes with higher dimensional spacers, the tetrairon complex with the two-dimensional tetra( ethynylphenyl) ethene spacer, (C=C)[p-C6H4-C = C-FeCp*(dppe)]4, and the diiron complex with the three-dimensional spacer (pseudo-m-[2,2] paracyclophane)[C equivalent to C-FeCp*(dppe)](2), are prepared, and their performance as molecular wires is evaluated on the basis of their comproportionation constants for the mixed valence state.

講演・口頭発表等

 4

担当経験のある科目(授業)

 7

共同研究・競争的資金等の研究課題

 4

社会貢献活動

 4

メディア報道

 1