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Chinese Journal of Chemistry 2023年第23期41卷 3305-3310页

作者： Yuchen Wang Jihong Zhang Wei Yang Weixue Tao Keying Tao Jihua Deng Wenjie Shi Dichang Zhong Tongbu Lu MOE International Joint Laboratory of Materials Microstructure Institute for New Energy Materials & Low Carbon Technologies School of Material Science & EngineeringTianjin University of TechnologyTianjin300384 China Guangdong Provincial Key Laboratory of Fuel Cell Technology GuangzhouGuangdong510641 China

The creation of effective and inexpensive catalysts is essential for photocatalytic CO_(2) *** molecular catalysts,possessing definite crystal structures,are desirable to study the relationship between catalytic performance and coordination microenvironment around catalytic *** this report,we elaborately developed three Co(II)-based molecular catalysts with different coordination microenvironments for CO_(2) reduction,named[CoN_(3)O]ClO_(4),[CoN_(4)]ClO_(4),and[CoN_(3)S]ClO_(4),*** optimal[CoN_(3)O]ClO_(4) photocatalyst has a maximum TON of 5652 in photocatalytic reduced CO_(2) reduction,which is 1.28 and 1.65 times greater than that of[CoN_(4)]ClO_(4) and[CoN_(3)S]ClO_(4),*** high electronegativity of oxygen in L1(N,N-bis(2-pyridylmethyl)-N-(2-hydroxybenzyl)amine)provides the Co(II)catalytic centers with low reduction potentials and a more stable*COOH intermediate,which facilitates the CO_(2)-to-CO conversion and accounts for the high photocatalytic activity of[CoN_(3)O]ClO_(4).This work provides researchers new insights in development of catalysts for photocatalytic CO_(2) reduction.

关键词： Co(II)-based homogeneous catalysts Coordination microenvironment Photocatalysis CO_(2)reduction homogenous catalysis

Diverse Fates of β-Silyl Radical under Manganese catalysis： Hydrosilyla-tion and Dehydrogenative Silylation of Alkenes

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Chinese Journal of Chemistry 2018年第11期36卷 1047-1051页

作者： Xiaoxu Yang Congyang Wang Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 200049 China

Manganese‐catalyzed hydrosilylation of alkenes has been underdeveloped for a long time. Herein, we describe a general, chemo‐ and regio‐ selective hydrosilylation of alkenes by using the Mn(CO)5Br catalyst with ample substrate scopes. Meanwhile, dehydrogenative silylation of aryl olefins can be selectively achieved upon the catalysis of dinuclear Mn2(CO)10. Mechanistic experiments revealed diverse fates of the common intermediate β‐silyl radical, namely, hydrogen atom transfer (HAT) for the hydrosilylation and organometallic β‐H elimination for the dehydrogenative silylation of olefins.

关键词： manganese hydrosilylation dehydrogenative silylation alkene homogenous catalysis

Recent Progress on Transition Metal （Fe, Co, Ni, Ti and V） Complex Catalysts in Olefin Polymerization with High Thermal Stability

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Chinese Journal of Chemistry 2017年第5期35卷 531-540页

作者： Zhifeng Ma Wenhong Yang Wen-Hua Sun Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Science Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China

The design and synthesis of transition metal complexes with high thermal stability in olefin polymerization have become more and more important in order to meet the need of industrial *** review focuses on the transition metal complex catalyst with high thermal stability containing different structures,including the backbone of bis（imino）pyridine,a-diimine and other types of *** the catalytic activity,the influence of reaction temperature on the molecular weight and molecular weight distribution of the obtained polymer was also *** plausible mechanism on the stability of catalysts at high temperature was proposed,which may give guidance to design catalyst with good thermal stability.

关键词： thermal stability transition metal complex olefin polymerization homogenous catalysis ligand effects

Bifunctional Salen-Cu（II） Complex as Efficient Catalyst for N-Arylation of Imidazoles and Suzuki-Miyaura Coupling Reactions

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Chemical Research in Chinese Universities 2015年第4期31卷 549-552页

作者： WANG Yi GAO Jingyi ZHAO Mengdan LI Jiamei Faculty of Chemistry and Chemical Engineering Yunnan Normal University Kunming 650500 P. R. China

Bifunctional Salen-Cu（II） complex catalyzed cross-coupling reactions of aryl halids with imidazoles or phenylboronic acid reagents have been developed as practical methods for C--N and C--C bond formation. The procedure tolerates aryl halides with various functional groups（such as methoxy, acetyl, nitrile, fluoro and nitro groups） and gives the corresponding coupling products in moderate to high yields. The catalyst remained active after fiye successive catalytic runs without loss in performance.

关键词： Salcn-Cu(II) complex homogenous catalysis Cross-coupling N-Arylation