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Dive into the research topics where Tomoya Ishizuka is active.

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Featured researches published by Tomoya Ishizuka.


Angewandte Chemie | 2001

Metal Complexes of an N‐Confused Calix[4]phyrin Derivative—The First X‐ray Structure of an Organometallic Compound of Divalent Copper

Hiroyuki Furuta; Tomoya Ishizuka; Atsuhiro Osuka; Y. Uwatoko; Yuichi Ishikawa

Rare organometallic complexes can be stabilized by using an N-confused system as a carbon ligand. A stable organocopper(II) compound of N-confused calix[4]phyrin has been characterized by X-ray crystallography. Complete π conjugation was found not to be a prerequisite for the formation of the metal-carbon bond.


Inorganic Chemistry Communications | 2003

Zinc complex of N-confused calix[4]phyrin

Hiroyuki Furuta; Tomoya Ishizuka; Atsuhiro Osuka

Abstract A zinc(II) complex of N-confused calix[4]phyrin (isoporphyrin) (2-Zn) has been synthesized and the structure was revealed by 1 H NMR and X-ray analyses. The atomic distance between zinc metal and the inner-core carbon was about 0.2 A longer compared with that of zinc(II) N-confused porphyrin complexes, suggesting the weaker side-on η1-coordination with the inner-core-carbon in 2-Zn.


Chemical Communications | 2003

Modulation of axial coordination in N-confused porphyrin–antimony(V) dibromide complex by proton stimulus

Jia Cheng Liu; Tomoya Ishizuka; Atsuhiro Osuka; Hiroyuki Furuta

The change of the axial bond length in the antimony(V) N-confused tetraphenylporphyrin dibromide complex was demonstrated by protonation and confirmed from X-ray single crystal analyses.


Journal of the American Chemical Society | 2001

NH tautomerism of N-confused porphyrin.

Hiroyuki Furuta; Tomoya Ishizuka; Atsuhiro Osuka; Hirohisa Dejima; Hidenori Nakagawa; Yuichi Ishikawa


Journal of the American Chemical Society | 2000

'N-fused porphyrin': A new tetrapyrrolic porphyrinoid with a fused tri- pentacyclic ring

Hiroyuki Furuta; Tomoya Ishizuka; Atsuhiro Osuka, ,‡ and; Takuji Ogawa


Journal of the American Chemical Society | 1999

“N-Fused Porphyrin” from N-Confused Porphyrin

Hiroyuki Furuta; Tomoya Ishizuka; and Atsuhiro Osuka; Takuji Ogawa


Journal of the American Chemical Society | 2003

Doubly N-Confused Hexaphyrin: A Novel Aromatic Expanded Porphyrin that Complexes Bis-metals in the Core

Alagar Srinivasan; Tomoya Ishizuka; and Atsuhiro Osuka; Hiroyuki Furuta


Chemistry: A European Journal | 2003

Fine tuning of photophysical properties of meso-meso-linked ZnII-diporphyrins by dihedral angle control.

Naoya Yoshida; Tomoya Ishizuka; Atsuhiro Osuka; Dae Hong Jeong; Hyun Sun Cho; Dongho Kim; Yoichi Matsuzaki; Atsushi Nogami; Kazuyoshi Tanaka


Tetrahedron | 2008

Substitution, dimerization, metalation, and ring-opening reactions of N-fused porphyrins

Tomoya Ishizuka; Shinya Ikeda; Motoki Toganoh; Ichiro Yoshida; Yuichi Ishikawa; Atsuhiro Osuka; Hiroyuki Furuta


Chemistry: A European Journal | 2003

Synthesis of Directly Linked Zinc(II) Porphyrin–Imide Dyads and Energy Gap Dependence of Intramolecular Electron Transfer Reactions

Naoya Yoshida; Tomoya Ishizuka; Katsuyuki Yofu; Masataka Murakami; Hiroshi Miyasaka; Tadashi Okada; Yasushi Nagata; Akira Itaya; Hyun Sun Cho; Dongho Kim; Atsuhiro Osuka

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Akira Itaya

Kyoto Institute of Technology

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