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ラベル(E.ur. J. Inorg. Chem.)が付いた投稿を表示しています

Photocatalytic Hydroxylation of Benzene by Dioxygen to Phenol with a Cyano-Bridged Complex Containing FeII and RuII Incorporated in Mesoporous Silica−Alumina

Yusuke Aratani,† Kohei Oyama,† Tomoyoshi Suenobu,† Yusuke Yamada,*,‡ and Shunichi Fukuzumi*,†,§,∥ †Department of Material and Life Science, Graduate School of Engineering, Osaka University, ALCA and SENTAN, Japan Science and Technology Agency, Suita, Osaka 565-0871, Japan ‡Department of Applied Chemistry and Bioengineering, Graduate School of Engineering, Osaka City University, Osaka 558-8585, Japan §Department of Chemistry and Nano Science, Ewha Womans ∥Faculty of Science and Engineering, Meijo University, ALCA Aichi 468-0073, Japan University, Seoul 120-750, Koreaand SENTAN, Japan Science and Technology Agency, Nagoya, http://pubs.acs.org/doi/abs/10.1021/acs.inorgchem.5b02909 Abstract Photocatalytic hydroxylation of benzene to phenol was achieved by using O 2  as an oxidant as well as an oxygen source with a cyano-bridged polynuclear metal complex containing Fe II  and Ru II incorporated in mesoporous silica–alumina ([Fe(H 2 O) 3 ] 2 [Ru(CN) 6 ]@sAl-MCM-4...

A Pentacoordinate Mn(II) Precatalyst That Exhibits Notable Aldehyde and Ketone Hydrosilylation Turnover Frequencies

Chandrani Ghosh ,  Tufan K. Mukhopadhyay ,  Marco Flores ,  Thomas L. Groy , and  Ryan J. Trovitch * School of Molecular Sciences,  Arizona State University , Tempe, Arizona 85287,  United States Inorg. Chem. , Article ASAP DOI:  10.1021/acs.inorgchem.5b01825 Publication Date (Web): October 19, 2015 Copyright © 2015 American Chemical Society *E-mail:  ryan.trovitch@asu.edu . Phone:  (480) 727-8930 . http://pubs.acs.org/doi/abs/10.1021/acs.inorgchem.5b01825 Synopsis Reduction of the bis(imino)pyridine-supported precursor complex, ( PyEt PDI)MnCl 2 , results in deprotonation of both backbone methyl groups and the formation of ( PyEt PDEA)Mn. This complex was found to mediate the hydrosilylation of 17 different aldehydes and ketones under mild conditions. When low loadings were employed in the absence of solvent, hydrosilylation turnover frequencies as high as 2475 min −1  were achieved. Comparison to leadi...

Role of Spin States in Nitric Oxide Binding to Cobalt(II) and Manganese(II) Porphyrins. Is Tighter Binding Always Stronger?

Inorganic Chemistry: Latest Articles (ACS Publications)  by Mariusz Radoń  /   16d   //   keep unread   //   hide   //   preview Synopsis Does tighter binding of a ligand always lead to a larger bond energy? Not necessarily, if multiple spin states are involved in the binding process, as illustrated here for nitrosyl complexes of Co(II) and Mn(II) porphyrins. On the basis of quantum chemical calculations (DFT, DFT-D, and coupled-cluster) and their critical comparison with available experimental data, the spin-state conversion energy is identified as an important contribution to the metal−NO bond energy. Abstract Binding of nitric oxide (NO) to metalloporphyrins and heme groups is important in biochemistry while challenging to describe accurately by density functional theory (DFT) calculations. Here, the structural and thermochemical aspect of NO binding to Co(II) and Mn(II) porphy...

You have full text access to this contentBOX Ligands in Biomimetic Copper-Mediated Dioxygen Activation: A Hemocyanin Model (pages 4660–4676)

Adam Walli, Sebastian Dechert, Matthias Bauer, Serhiy Demeshko and Franc Meyer Article first published online: 1 AUG 2014 | DOI: 10.1002/ejic.201402378 A series of bis(oxazoline)-copper(I) complexes reversibly bind dioxygen to yield biomimetic μ-η 2 :η 2 -peroxo-dicopper(II) species, which represent new functional hemocyanin models. Their kinetics of formation have been studied under cryo conditions, and the complexes have been isolated as surprisingly stable solids. All were investigated by a variety of methods, both in solution and in the solid state. Abstract Full Article (HTML) Enhanced Article (HTML) PDF(4392K) References Supporting Information Request Permissions