理数情報教育系

久保埜 公二

クボノ コウジ  (Koji Kubono)

基本情報

所属
大阪教育大学 理数情報教育系 教授
学位
理学修士(京都大学)
博士(理学)(京都大学)
工学士(岐阜大学)

連絡先
kubonocc.osaka-kyoiku.ac.jp
研究者番号
00269531
J-GLOBAL ID
200901003882805635
researchmap会員ID
1000189927

経歴

 5

学歴

 3

論文

 64
  • Koji Kubono, Kanata Tanaka, Keita Tani, Yukiyasu Kashiwagi
    Acta Crystallographica Section E Crystallographic Communications 80(11) 1175-1179 2024年10月15日  査読有り筆頭著者責任著者
    The title compound, [Zn2(C22H18ClN4O)Cl3], is a dinuclear zinc(II) complex with three chlorido ligands and one pentadentate ligand containing quinolin-8-olato and bis(pyridin-2-ylmethyl)amine groups. One of the two ZnII atom adopts a tetrahedral geometry and coordinates two chlorido ligands with chelate coordination of the N and O atoms of the quinolin-8-olato group in the ligand. The other ZnII atom adopts a distorted trigonal–bipyramidal geometry, and coordinates one chlorido-O atom of the quinolin-8-olato group and three N atoms of the bis(pyridin-2-ylmethyl)amine unit. In the crystal, two molecules are associated through a pair of intermolecular C—H...Cl hydrogen bonds, forming a dimer with an R 2 2(12) ring motif. Another intermolecular C—H...Cl hydrogen bond forms a spiral C(8) chain running parallel to the [010] direction. The dimers are linked by these two intermolecular C—H...Cl hydrogen bonds, generating a ribbon sheet structure in ac plane. Two other intermolecular C—H...Cl hydrogen bonds form a C(7) chain along the c-axis direction and another C(7) chain generated by a d-glide plane. The molecules are cross-linked through the four intermolecular C—H...Cl hydrogen bonds to form a three-dimensional network.
  • Mami Isobe, Yukiyasu Kashiwagi, Koji Kubono
    Acta Crystallographica Section E Crystallographic Communications 80(8) 840-844 2024年7月9日  査読有り最終著者
    The asymmetric unit of the title compound is composed of two independent ion pairs of 4-(dimethylamino)pyridin-1-ium 8-hydroxyquinoline-5-sulfonate (HDMAP+·HqSA, C7H11N2 +·C9H6NO4S) and neutral N,N-dimethylpyridin-4-amine molecules (DMAP, C7H10N2), co-crystallized as a 1:1:1 HDMAP+:HqSA:DMAP adduct in the monoclinic system, space group Pc. The compound has a layered structure, including cation layers of HDMAP+ with DMAP and anion layers of HqSA in the crystal. In the cation layer, there are intermolecular N—H...N hydrogen bonds between the protonated HDMAP+ molecule and the neutral DMAP molecule. In the anion layer, each HqSA is surrounded by other six HqSA, where the planar network structure is formed by intermolecular O—H...O and C—H...O hydrogen bonds. The cation and anion layers are linked by intermolecular C—H...O hydrogen bonds and C—H...π interactions.
  • Keita Tani, Kako Ueno, Miyuki E. Masaki, Masatsugu Taneda, Kazushige Hori, Koji Kubono, Kenta Goto, Fumito Tani, Yukiyasu Kashiwagi, Takunori Harada
    Chemistry Letters 52(11) 858-860 2023年11月5日  査読有り
  • Koji Kubono, Ryoichi Tanaka, Yukiyasu Kashiwagi, Keita Tani, Kunihiko Yokoi
    Acta Crystallographica Section E Crystallographic Communications 79(8) 726-729 2023年8月1日  査読有り筆頭著者責任著者
    In the title compound, [Na(C22H19N4O4S)(CH3CN)]n, the NaI atom adopts a distorted square-pyramidal coordination geometry, formed by one N and one O atom of the qunolinol moiety in the ligand, two O atoms of sulfonate moieties of two adjacent ligands and the N atom of the coordinated acetonitrile solvent. The NaI atom is located well above the mean basal plane of the square-based pyramid. The apical position is occupied by a sulfonate O atom of a neighboring ligand. Three N atoms of the bis(pyridin-2-ylmethyl)amine moiety in the ligand are not coordinated by the sodium atom. The molecule forms an intramolecular bifurcated O—H...[N(tertiary amine),N(pyridine)] hydrogen bond, generating S(6) and S(5) rings. In the crystal, four molecules are linked by four Na—O(sulfonato) bridged coordination bonds, forming a supramolecular centrosymmetric tetramer unit comprising an eight-membered ring, and generating a two-dimensional network sheet. The molecules of different sheets form intermolecular C—H...O hydrogen bonds, and thereby a three-dimensional network structure.
  • Koji Kubono, Keita Tani, Yukiyasu Kashiwagi, Fumito Tani, Taisuke Matsumoto
    Acta Crystallographica Section E Crystallographic Communications 78(5) 477-480 2022年4月5日  査読有り
    The title compound, C33H33N3, is a carbazolophane, which is a cyclophane composed of two carbazole fragments. It has a planar chirality but crystallizes as a racemate in the space group P-1. The molecule adopts an anti-configuration, in which two carbazole fragments are partially overlapped. Both carbazole ring systems are slightly bent, with the C atoms at 3-positions showing the largest deviations from the mean planes. The dihedral angle between two carbazole fragments is 5.19 (3)°, allowing an intramolecular slipped π–π interaction [Cg...Cg = 3.2514 (8) Å]. In the crystal, the molecules are linked via intermolecular C—H...N hydrogen bonds and C—H...π interactions into a network sheet parallel to the ab plane. The molecules of different sheets form other C—H...π interactions, thus forming a three-dimensional network.

MISC

 9

書籍等出版物

 12

講演・口頭発表等

 52

共同研究・競争的資金等の研究課題

 21

産業財産権

 2