Masaaki Ichinohe - Papers

1,3,5-[(Bu2MeSi)-Bu-t)(2)Si](3)C6H3: Isolable Si-centered Triradical with a High-spin Quartet Ground State

Takeshi Nozawa, Masaaki Ichinohe, Akira Sekiguchi

CHEMISTRY LETTERS, 44(1) 56-57, Jan, 2015

Isolable Aryl-Substituted Silyl Radicals: Synthesis, Characterization, and Reactivity

Kanako Taira, Masaaki Ichinohe, Akira Sekiguchi

CHEMISTRY-A EUROPEAN JOURNAL, 20(30) 9342-9348, Jul, 2014 Peer-reviewed

An Isolable NHC-Stabilized Silylene Radical Cation: Synthesis and Structural Characterization

Hiroaki Tanaka, Masaaki Ichinohe, Akira Sekiguchi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 134(12) 5540-5543, Mar, 2012 Peer-reviewed

A New Disilene with pi-Accepting Groups from the Reaction of Disilyne RSir SiR (R = (SiPr)-Pr-i[CH(SiMe3)(2)]) with Isocyanides

Katsuhiko Takeuchi, Masaaki Ichinohe, Akira Sekiguchi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 134(6) 2954-2957, Feb, 2012 Peer-reviewed

Synthesis of a low-bandgap polymer bearing side groups containing phenoxy radicals

Yu Innami, Rafael H. L. Kiebooms, Tamotsu Koyano, Masaaki Ichinohe, Satoshi Ohkawa, Kohsuke Kawabata, Masataka Kawamatsu, Kiyoto Matsuishi, Hiromasa Goto

JOURNAL OF MATERIALS SCIENCE, 46(20) 6556-6562, Oct, 2011 Peer-reviewed

Access to a Stable Si2N2 Four-Membered Ring with Non-Kekule Singlet Biradical Character from a Disilyne

Katsuhiko Takeuchi, Masaaki Ichinohe, Akira Sekiguchi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 133(32) 12478-12481, Aug, 2011 Peer-reviewed

Synthesis and Striking Reactivity of an Isolable Tetrasilyl-Substituted Trisilaallene

Hiroaki Tanaka, Shigeyoshi Inoue, Masaaki Ichinohe, Matthias Driess, Akira Sekiguchi

ORGANOMETALLICS, 30(13) 3475-3478, Jul, 2011 Peer-reviewed

Isolable p- and m-[((Bu2MeSi)-Bu-t)(2)Si](2)C6H4: Disilaquinodimethane vs Triplet Bis(silyl radical)

Takeshi Nozawa, Michiyo Nagata, Masaaki Ichinohe, Akira Sekiguchi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 133(15) 5773-5775, Apr, 2011 Peer-reviewed

Hydroboration of Disilyne RSi SiR (R = (SiPr)-Pr-i[CH(SiMe3)(2)](2)), Giving Boryl-Substituted Disilenes

Katsuhiko Takeuchi, Masaaki Ichinohe, Akira Sekiguchi

ORGANOMETALLICS, 30(7) 2044-2050, Apr, 2011 Peer-reviewed

Silicon version of enamines: Amino-substituted disilenes by the reactions of the disilyne RSi SiR (R = (SiPr)-Pr-i[CH(SiMe3)(2)](2)) with amines

Katsuhiko Takeuchi, Masao Ikoshi, Masaaki Ichinohe, Akira Sekiguchi

JOURNAL OF ORGANOMETALLIC CHEMISTRY, 696(6) 1156-1162, Mar, 2011 Peer-reviewed

The hexasiladigermacubane dianion

Vladimir Ya. Lee, Kazunori Takanashi, Tadahiro Matsuno, Masaaki Ichinohe, Akira Sekiguchi

APPLIED ORGANOMETALLIC CHEMISTRY, 24(12) 834-836, Dec, 2010 Peer-reviewed

Unsymmetrically Substituted Disilyne Dsi(2)(i)PrSi-Si Si-SiNpDsi(2) (Np = (CH2Bu)-Bu-t): Synthesis and Characterization

Yoshitaka Murata, Masaaki Ichinohe, Akira Sekiguchi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 132(47) 16768-16770, Dec, 2010 Peer-reviewed

The Hexasiladigermacubane Dianion

V, Ya. Lee, K., Takanashi, T., Matsuno, M., Ichinohe, and, A. Sekiguchi

Applied Organometallic Chemistry, 24(12) 834-836, Dec, 2010 Peer-reviewed

Reactivity of the disilyne RSi SiR (R = (SiPr)-Pr-i[CH(SiMe3)(2)](2)) toward bis(silylcyanide) forming a 1,4-diaza-2,3-disilabenzene analog

Katsuhiko Takeuchi, Masaaki Ichinohe, Akira Sekiguchi, Jing-Dong Guo, Shigeru Nagase

JOURNAL OF PHYSICAL ORGANIC CHEMISTRY, 23(4) 390-394, Apr, 2010 Peer-reviewed

Addition of methyllithium to disilyne RSi SiR (R = SiiPr[CH(SiMe3)(2)]), giving a disilenyllithium, and its unexpected isomerization to a disilacyclopropylsilyllithium

Torahiko Yamaguchi, Masaaki Ichinohe, Akira Sekiguchi

NEW JOURNAL OF CHEMISTRY, 34(8) 1544-1546, 2010 Peer-reviewed

Addition of Amines and Hydroborane to the Disilyne RSi SiR (R = (SiPr)-Pr-i[CH(SiMe3)(2)](2)) Giving Amino- and Boryl-Substituted Disilenes

Katsuhiko Takeuchi, Masao Ikoshi, Masaaki Ichinohe, Akira Sekiguchi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 132(3) 930-+, Jan, 2010 Peer-reviewed

An (eta(3)-Disilaallyl)lithium Derivative: Interconversion of pi-Allyl-Type Bonding and eta(1) Coordination to a Silyllithium Fragment

Hiroaki Tanaka, Shigeyoshi Inoue, Masaaki Ichinohe, Akira Sekiguchi

ORGANOMETALLICS, 28(23) 6625-6628, Dec, 2009

An η3-Disilaallyllithium Derivative: Interconversion of π-Allyl-Type Bonding and η1-Coordination to a Silyllithium Fragment

H., Tanaka, S., Inoue, M., Ichinohe, A., Sekiguchi

Organometallics, 28(23) 6625-6628-6628, Dec, 2009 Peer-reviewed

Interaction of pi-bonds of the silicon-silicon triple bond with alkali metals: An isolable anion radical upon reduction of a disilyne

Akira Sekiguchi, Rei Kinjo, Masaaki Ichinohe

SYNTHETIC METALS, 159(9-10) 773-775, May, 2009 Peer-reviewed

Reactivity of the Disilyne RSi SiR (R = (SiPr)-Pr-i[CH(SiMe3)(2)](2)) toward Nitriles: Unexpected Formation of Triaza-1,4-disilabicyclo[2.2.2]octa-2,5,7-triene Derivatives

Katsuhiko Takeuchi, Masaaki Ichinohe, Akira Sekiguchi, Jing-Dong Guo, Shigeru Nagase

ORGANOMETALLICS, 28(9) 2658-2660, May, 2009 Peer-reviewed

Reactivity of the Disilyne RSi SiR (R = (SiPr)-Pr-i[CH(SiMe3)(2)](2)) toward Silylcyanide: Two Pathways To Form the Bis-Adduct [RSiSiR(CNSiMe3)(2)] with Some Silaketenimine Character and a 1,4-Diaza-2,3-disilabenzene Analogue

Katsuhiko Takeuchi, Masaaki Ichinohe, Akira Sekiguchi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 130(50) 16848-+, Dec, 2008 Peer-reviewed

Silylcarbene-to-Silene Rearrangement: Stable 1,2-Dihydrosilenes in Solution via the Silylcarbene Route

Hiroaki Tanaka, Masaaki Ichinohe, Akira Sekiguchi

CHEMISTRY LETTERS, 37(12) 1246-1247, Dec, 2008 Peer-reviewed

A Free Silylium Ion: A Cyclotetrasilenylium Ion with Allylic Character

Shigeyoshi Inoue, Masaaki Ichinohe, Torahiko Yamaguchi, Akira Sekiguchi

ORGANOMETALLICS, 27(23) 6056-6058, Dec, 2008 Peer-reviewed

Silylcarbene-to-Silene Rearrangement : Stable 1,2-Dihydrosilenes in Solution via the Silylcarbene Route

TANAKA, Hiroaki, ICHINOHE, Masaaki, SEKIGUCHI, Akira

Chemistry letters, 37(12) 1246-1247, Dec, 2008

An Isolable Boryl-substituted Disilene from the Reaction of an sp(2)-type Silyl Anion with Haloboranes: Synthesis and Characterization

Shigeyoshi Inoue, Masaaki Ichinohe, Akira Sekiguchi

CHEMISTRY LETTERS, 37(10) 1044-1045, Oct, 2008 Peer-reviewed

The isolable cation radical of disilene: Synthesis, characterization, and a reversible one-electron redox system

Shigeyoshi Inoue, Masaaki Ichinohe, Akira Sekiguchi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 130(19) 6078-+, May, 2008

Tetrakis(trimethylsilyl)cyclobutadiene dianion alkaline earth metal salts: New members of the 6 pi-electron aromatics family

Kazunori Takanashi, Akira Inatomi, Vladimir Ya. Lee, Masaaki Nakamoto, Masaaki Ichinohe, Akira Sekiguchilai

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, (11) 1752-1755, Apr, 2008 Peer-reviewed

Isolable alkali-metal-substituted silyl radicals ((Bu2MeSi)-Bu-t)(2)SiM (M = Li, Na, K): Electronically and sterically accessible planar silyl radicals

Shigeyoshi Inoue, Masaaki Ichinohe, Akira Sekiguchi

ORGANOMETALLICS, 27(7) 1358-1360, Apr, 2008

A Stable Silagermene ((Bu3Si)-Bu-t)(2)Si=Ge(Mes)(2) (Mes=2,4,6-Trimethylphenyl): Synthesis, X-ray Crystal Structure, and Thermal Isomerization

Igarashi, Masayasu, Ichinohe, Masaaki, Sekiguchi, Akira

HETEROATOM CHEMISTRY, 19(7) 649-653, Jan, 2008 Peer-reviewed

1,2-disilacyclobut-2-enes: Donor-free four-membered cyclic silenes from reaction of disilenides with vinylbromides

Iulia Bejan, Shigeyoshi Inoue, Masaaki Ichinohe, Akira Sekiguchi, David Scheschkewitz

CHEMISTRY-A EUROPEAN JOURNAL, 14(24) 7119-7122, 2008

Tri-tert-butylsilylsilylenes with alkali metal substituents ((Bu3Si)-Bu-t)SiM (M = Li, k): Electronically and sterically accessible triplet ground states

Akira Sekiguchi, Takashi Tanaka, Masaaki Ichinohe, Kimio Akiyama, Peter P. Gaspar

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 130(2) 426-+, Jan, 2008

1,3-Digerma-2-gallata- and -indataallenic Anions: The First Compounds with Ge=Ga or Ge=In Double Bonds

N., Nakata, R., Izumi, V, Ya. Lee, M., Ichinohe, and, A. Sekiguchi

Chemistry Letters, 37(11) 1146-1147-1147, Jan, 2008 Peer-reviewed

A Stable Boryl-substituted Disilene from the Reaction of an sp2-type Silyl Anion with Haloboranes: Synthesis and Characterization

S., Inoue, M., Ichinohe, and, A. Sekiguchi

Chemistry Letters, 37(10) 1044-1045-1045, Jan, 2008 Peer-reviewed

1,2-disilacyclobut-2-enes: Donor-free four-membered cyclic silenes from reaction of disilenides with vinylbromides

Bejan, Iulia, Inoue, Shigeyoshi, Ichinohe, Masaaki, Sekiguchi, Akira, Scheschkewitz, David

CHEMISTRY-A EUROPEAN JOURNAL, 14(24) 7119-7122, Jan, 2008

The Isolable Cation-radical of Disilene: Synthesis, Characterization, and a Reversible One-electron Redox System

S., Inoue, M., Ichinohe, and, A. Sekiguchi, 関口, 章

Journal of the American Chemical Society, 130(19) 6078-6079, Jan, 2008 Peer-reviewed

Isolable Alkali Metal-substituted Silyl Radicals (tBu2MeSi)2SiM (M = Li, Na, K): Electronically and Sterically Accessible Planar Silyl Radicals

S., Inoue, M., Ichinohe, and, A. Sekiguchi

Organometallics, 27(7) 1358-1360, Jan, 2008 Peer-reviewed

Tri-tert-butylsilylsilylenes with Alkali Metal Substituents (tBu3Si)SiM (M = Li, K): Electronically and Sterically Accessible Triplet Ground States

A., Sekiguchi, T., Tanaka, M., Ichinohe, K., Akiyama, and, P. P. Gaspar

Journal of the American Chemical Society, 130(2) 426-427-+, Jan, 2008 Peer-reviewed

(eta(5)-Cyclopentadienyl)(eta(4)-tetrasila- and eta(4)-trisilagermacyclobutadiene)cobalt: Sandwich complexes featuring heavy cyclobutadiene ligands

Kazunori Takanashi, Vladimir Ya. Lee, Masaaki Ichinohe, Akira Sekiguchia

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, (35) 5471-5474, Dec, 2007 Peer-reviewed

Air-stable disilacyclopropene with a Si=C bond and its conversion to disilacyclopropenylium ion: Silicon-carbon hybrid 2 pi-electron systems

Masayasu Igarashi, Masaaki Ichinohe, Akira Sekiguchi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 129(42) 12660-+, Oct, 2007 Peer-reviewed

1,2,5,6-tetrasilabenzobenzvalene: A valence isomer of 1,2,3,4-tetrasilanaphthalene

Kazunori Takanashi, Vladimir Ya. Lee, Masaaki Ichinohe, Akira Sekiguchi

CHEMISTRY LETTERS, 36(9) 1158-1159, Sep, 2007 Peer-reviewed

Reactivity of a disilyne RSi SiR (R = (SiPr)-Pr-i[CH(SiMe3)(2)](2)) toward pi-bonds: Stereospecific addition and a new route to an isolable 1,2-disilabenzene

Rei Kinjo, Masaaki Ichinohe, Akira Sekiguchi, Nozomi Takagi, Michinori Sumimoto, Shigeru Nagase

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 129(25) 7766-+, Jun, 2007 Peer-reviewed

Heavy analogues of the 6 pi-electron anionic ring systems: Cyclopentadienide ion and cyclobutadiene dianion

Vladimir Ya. Lee, Kazunori Takanashi, Risa Kato, Tadahiro Matsuno, Masaaki Ichinohe, Akira Sekiguchi

JOURNAL OF ORGANOMETALLIC CHEMISTRY, 692(13) 2800-2810, Jun, 2007 Peer-reviewed

Isolable silylene anion radical: Structural characteristics in the solid state and in solution

Shigeyoshi Inoue, Masaaki Ichinohe, Akira Sekiguchi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 129(19) 6096-+, May, 2007

Conversion of a disilenide into a silene: Silyl-anion-substituted silene by a sila-Peterson-type reaction from an sp(2)-type silyl anion

Shigeyoshi Inoue, Masaaki Ichinohe, Akira Sekiguchi

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 46(18) 3346-3348, 2007

Stable cyclic silenes from reaction of disilenides with carboxylic acid chlorides

Iulia Bejan, Denis Gueclue, Shigeyoshi Inoue, Masaaki Ichinohe, Akira Sekiguchi, David Scheschkewitz

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 46(18) 3349-3352, 2007

Heavy cyclopropene analogues R4SiGe2 and R4Ge3 (R = (SiMeBu2)-Bu-t) - New members of the cyclic digermenes family

Vladimir Ya. Lee, Hiroyuki Yasuda, Masaaki Ichinohe, Akira Sekiguchi

JOURNAL OF ORGANOMETALLIC CHEMISTRY, 692(1-3) 10-19, Jan, 2007 Peer-reviewed

An isolable disilyne anion radical and a new route to the disilenide ion upon reduction of a disilyne

Rei Kinjo, Masaaki Ichinohe, Akira Sekiguchi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 129(1) 26-27, Jan, 2007

Isolable Silylene Anion Radical: Structural Characteristics in the Solid State and in Solution

S., Inoue, M., Ichinohe, A., Sekiguchi

Journal of the American Chemical Society, 129(19) 6096-6097, Jan, 2007 Peer-reviewed

Stable Cyclic Silenes from Reaction of Disinides with Carboxylic Acid Chlorides

I., Bejan, D., Gcl, S., Inoue, M., Ichinohe, A., Sekiguchi, D., Scheschkewitz

Angewandte Chemie, International Edition, 46(18) 3349-3352, Jan, 2007 Peer-reviewed

Conversion of Disilenide into Silene: Silyl Anion-substituted Silene by a Sila-Peterson-type Reaction from an sp2-type Silyl Anion

S., Inoue, M., Ichinohe, A., Sekiguchi

Angewandte Chemie, International Edition, 46(18) 3346-3348, Jan, 2007 Peer-reviewed