Author
Toru Sugiyama
Bio: Toru Sugiyama is an academic researcher from Sophia University. The author has contributed to research in topics: Moiety & Substitution reaction. The author has an hindex of 10, co-authored 37 publications receiving 296 citations.
Papers
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TL;DR: In this article, a series of alkylidene-bridged metalladithiolene complexes were analyzed by cyclic voltammetry and it was shown that both reduction and oxidation weaken the M-S-C and S-C bonds in the triangle ring.
42 citations
TL;DR: In this paper, the reduction halfwave potential values of the imido-bridged complexes depend on the substituent of bridging moiety, and they showed that the reductant of the original complex is regenerated not by the first reduction, but by the second reduction according to CV and OTTLE measurements.
32 citations
TL;DR: In this paper, the ruthenium dithiolene complexes (arene)Ru{S 2 C 2 (COOMe) 2 }] (arenes = C 6 H 6 (1a), C 6 Me 6 ( 1c )) were synthesized, and the equilibrium between complex 1a and the corresponding dimer was confirmed in solution.
28 citations
TL;DR: In this article, the reaction of an alkylidene-bridged dithiolene complex with trimethyl phosphite results in the formation of a novel type of sulfonium ylide coordinated to a cobalt atom.
20 citations
TL;DR: In this paper, the title reaction resulted in desulfurization in the thiocarbonyl ligand to produce a new complex with a novel planar ligand, [CpCoS2C2S2CC(CN)2].
15 citations
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TL;DR: The 1,3dithiole-2-thione-4,5-dithiolate ligand and chalcogen atom substituted isologs have been extensively used in organic and coordination chemistry since their first reported synthesis in 1975.
212 citations
TL;DR: Transition metal-containing metallabenzenes as discussed by the authors are organometallic compounds derived from formal replacement of a CH group or a C atom in benzene and benzyne by an isolobal transition metal fragment.
152 citations
TL;DR: In this paper, a critical overview of the literature on electrochemistry of unsaturated ring-compounds containing bonds between Group 15 and Group 16 elements (principally S and N), including metallacycles, is presented.
110 citations
TL;DR: The MESPsteric value showed a good linear correlation with the cone angle values as well as the average of the intervalence HPH angles found in the QM layer, which confirmed the present approach to understanding the steric effect separately from the electronic effect.
Abstract: A two-layer ONIOM(B3LYP/6-31G(d,p):UFF) quantum mechanics (QM)−molecular mechanics (MM) optimization of PR3 ligands, where the QM layer is always constructed as PH3, followed by molecular electrostatic potential (MESP) analysis of the QM layer is suggested as a simple and effective method for evaluating the steric effect of PR3 ligands. The subtle variations in the electron distribution that arise as a result of the steric bulkiness as well as the conformational changes in the substituent groups is well reflected in the value of the MESP minimum (Vmin) located in the QM region. In general, a sterically bulky group has always shown a more negative Vmin than a sterically less bulky group. The difference between the Vmin value of free PH3 and the Vmin value at the QM region of PR3 is used as a measure of the steric effect of the PR3 ligand. This value, designated as MESPsteric, showed a good linear correlation with the cone angle values as well as the average of the intervalence HPH angles found in the QM la...
96 citations
TL;DR: In this paper, the current advance of metal complexes bearing acylpyrazolonate ligands is reviewed, together with a survey of the ligands biological properties and their main structural features and potential applications.
91 citations