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CHARACTERIZATION OF SOME SCHIFF BASES OF HETEROCYCLIC COMPOUNDS AND THEIR TRANSITION METAL COMPLEXES
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作者 Geng ZHANG Jun Ming TANG Quan Ling LOU Zan SHI Department of Chemistry,Henan Normal University,Xinxiang,453002 《Chinese Chemical Letters》 SCIE CAS CSCD 1991年第9期681-682,共2页
Some new Schiff bases were synthesized by the condensation of equimolar quantities of salicylaldehyde and 2-amino-5-phenylazo-pyridine or its derivatives in dry benzene(1):Metal complexes of the type ML_2and M'L_3... Some new Schiff bases were synthesized by the condensation of equimolar quantities of salicylaldehyde and 2-amino-5-phenylazo-pyridine or its derivatives in dry benzene(1):Metal complexes of the type ML_2and M'L_3 where M=Cu^(2+),Co^(2+),Ni^(2+),Mn^(2+)Pd^(2+),M'=Fe^(3+)and L=different newly synthesized monobasic Schiff bases were prepared in absolute ethanolic medium(2)and characterized by elementary analysis,conductance measurements,infrared spectra,electronic spectra,magnetic moments studies. 展开更多
关键词 CHARACTERIZATION OF SOME SCHIFF baseS OF HETEROCYCLIC COMPOUNDS AND THEIR transition metal COMPLEXES
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Electrocatalytic oxygen evolution activities of metal chalcogenides and phosphides:Fundamentals,origins,and future strategies 被引量:1
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作者 Xiaolin Hu Ronghua Wang +2 位作者 Wenlin Feng Chaohe Xu Zidong Wei 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2023年第6期167-191,I0006,共26页
The development of inexpensive and efficient electrocatalysts is key to commercializing energy-related electrocatalytic techniques such as water electrolyzers and metal-air batteries.In particular,novel oxygen evoluti... The development of inexpensive and efficient electrocatalysts is key to commercializing energy-related electrocatalytic techniques such as water electrolyzers and metal-air batteries.In particular,novel oxygen evolution reaction(OER)pre-catalysts,such as transition metal chalcogenides(TMCs)and phosphides(TMPs),have evolved in recent years from traditional stable OER electrocatalysts,which show superior OER electrocatalytic performance compared with transition metal oxides(TMOs)or(oxy)hydroxides(TMOHs).In this feature article,we summarize recent advances in the development of TMCand TMP-based OER electrocatalysts,as well as approaches to improve the OER performance in terms of morphology,structure,composition,surface engineering,lattice-strained and in-situ transformation in the electrolysis process.In particular,the electrochemical stability of TMCs and TMPs in alkaline electrolytes and the evolution of morphology,structure and composition under OER conditions are discussed.In the last section,we discuss the challenges that need to be addressed in this specific area of research and the implications for further research. 展开更多
关键词 Oxygen evolution reaction ELECTROCATALYSIS Pre-catalysts Modulated strategies Structure-activity relationships transition metal base compounds
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Synthesis of Enantiom eric Planar Square Ni^(2+) -and Cu^(2+) -Schiff Base Com plexes
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作者 ZHAO Jian-zhang WANG Shu-gang +4 位作者 WANG Xu LIU Ju-zheng QIAO Xiao-guang LI Yao-xian WANG Hua 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 1999年第3期248-252,共5页
Enantiomeric four chelated planar square schiff base Cu 2+ and Ni 2+ complexes were synthesized using ( 1R,trans ) and ( 1S,trans) N,N bis(2 hydroxyphenyl methylene) 1,2 diaminocyclohexane. Th... Enantiomeric four chelated planar square schiff base Cu 2+ and Ni 2+ complexes were synthesized using ( 1R,trans ) and ( 1S,trans) N,N bis(2 hydroxyphenyl methylene) 1,2 diaminocyclohexane. The chirality could not be shown by usual UV Vis spectra. The intrinsic chiral difference of the enantiomeric complexes can be displayed by circular dichroism(CD) spectra. The Cotton effect of every polarlight sensitive absorption of one enantiomer will be the opposite of that of the other enantiomer. It was found that no tetrahedron form exists for Ni 2+ complexes, which was determined with UV Vis spectra and Electron Paramagnetic Resonance(EPR) measures. 展开更多
关键词 Chiral transition metal schiff base complex Circular dichroism(CD) Enantiomeric
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