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Synthesis and Crystal Structure of a New cis-Dioxovanadium (V) Complex with Pyruvic Acid Isonicotinyl Hydrazone (PAINH)

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Chinese Journal of Structural Chemistry 2006年第2期25卷 219-223页

作者： CHEN Rui-Jin ZHOU Yin-Zhuang HU Dai-Di tu shu-jie XIAO Ling-Mei DePartment of Chemistry Capital Normal University Beijing 100037 China

A new cis-dioxovanadium （V） complex [VO2（C9H8N3O3）]（C5H5N） involving a carboxyl group coordination employing a tridentate Schiff Base derived from pyruvic acid and isonicotinyl hydrazide is reported. This complex crystallizes in triclinic, space group P1^- with a = 7.3522 （12）, b = 7.8376（13）, c = 14.898（2） ,A°, a = 84.010（2）, β = 86.568（2）, γ= 64.586（2）°, V = 771.1（2）A °^3 ,Z = 2, F（000） = 376, Mr = 368.22, D, = 1.586 g/cm^3, g = 0.677 mm ^-1, R = 0.0421 and wR = 0.1253. The vanadium atom of the dioxovanadium （V） is five-coordinated to furnish a distorted trigonal bipyramid geometry.

关键词： dioxovanadium complex pyruvic acid isonicotinyl hydrazone (PAINH),crystal structure

The Effect of NMR Setting Parameters on Molecular Weight Determination of Polyether Diols

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Chinese Journal of Polymer Science 2024年第11期 1730-1737页

作者： shu-jie Huang Xiao-Hong Li Ying-Feng tu Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials State and Local Joint Engineering Laboratory for Novel Functional Polymeric MaterialsCollege of Chemistry Chemical Engineering and Materials Science Soochow University

Nuclear magnetic resonance （NMR） is an advanced technique for the molecular weight （MW） determination of polymers at quantitative *** this study,we investigate the effect of liquid1H-NMR instrumental setting parameters on the MW determination of polyether diols,namely poly（ethylene glycol）(PEG) and poly（tetramethylene oxide）(PTMO) diols,using hydroxymethylene groups as *** results show that the protons in chain-ends have larger spin-lattice relaxation time （T1） than those in main *** let most of the excited protons relax to the equilibrium state,the delay time （d1） should be much larger than T1of ***13C decoupling is inactive,the relative errors can be greater than 60%,due to the13C-coupled proton satellite peaks,which can overlap with chain-end groups or be misassigned as *** optimal quantitative NMR conditions for the MW estimation of polyethers are revealed below:standard pulse with inverted gated13C decoupling pulse sequence,32 scans,2.0 s acquisition time in 90 degree of flip angle and 30 s *** MWs determined from1H quantitative NMR are all smaller than those from SEC which are relative to polystyrene （PS） standards,since the size of polyether chains is larger than that of PS with the same *** addition,the MW obtained from SEC for PTMOs shows larger overestimation than PEGs,suggesting PEG chains are more flexible than PTMO’s.

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Cu-substituted nickel hexacyanoferrate with tunable reaction potentials for superior ammonium ion storage

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Journal of Materials Science & Technology 2024年第2期169卷 19-27页

作者： Leiyu Fan Guangchang shu Yiwen Liu Haoxiang Yu Lei Yan Liyuan Zhang jie shu School of Materials Science and Chemical Engineering Ningbo UniversityNingbo 315211China

In this work,a variety of Cu_(x)Ni_(2-x)Fe(CN)_(6)(x=0,0.4,0.8,1.2,1.6,2)cathodes for ammonium ion batteries are prepared and their electrochemical performances are *** the introduction of copper in nickel hexacyanoferrate,the electrochemical performance varies without changing the structure of nickel *** increase of Cu content in nickel hexacyanoferrate leads to the enhancement of reaction potential and *** results suggest that the substitution of Cu for Ni has a positive effect on improving the cycling stability and rate capacity of nickel hexacyanoferrate when x in Cu_(x)Ni_(2-x)Fe(CN)_(6)is less than ***,Cu_(0.4)Ni_(1.6)Fe(CN)_(6)exhibits the best cycling per-formance(capacity retention of 97.54%at 0.3 C)and the highest rate capacity(41.4 mAh g^(-1)at 10 C)in Cu_(x)Ni_(2-x)Fe(CN)_(6).Additionally,the X-ray diffraction(XRD)and X-ray photoelectron spectroscopy(XPS)tests also reveal that the structural evolution of Cu_(0.4)Ni_(1.6)Fe(CN)_(6)is highly reversible upon NH_(4)^(+)***,this work proposes a candidate material for ammoniumion batteries and offers a novel avenue for adjusting the operating potential of the material.

关键词： Nickel hexacyanoferrate Copper hexacyanoferrate NH_(4)^(+)storage Ammonium ion batteries Aqueous batteries

Synthesis　and　Crystal　Structure　of　［Na（DB18C6）（CH_3OH）］_2Mo_6O_（19）·（DB18C6）·（CH_3OH）

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Chinese Journal of Structural Chemistry 1995年第2期14卷 139-144页

作者： Zhou Yin-Zhuang tu shu-jie Jin Xiang-Lin Liu shun-Cheng(Department of Chemistry, Capital Normal University,Beijing 100037)(Institute of Physical Chemistry, Beijing University,Beijing 100871)(Experimental Center, Capital Normal University, Beijing 10003

The preparation method of [Na ( DB18C6) (CH_3OH )]_2Mo_6O_(19)·(DB18C6)·(CH_3OH) , where DB18C6 is dibenzo-18-crown-6, is described. Thecrystal and molecular structure of the title complex has been determined crystallographically. The title complex crystallizes in the monoclinic system,space group P2_1/c ,a=18. 727(6) ,b=19. 555(6) , c=22. 827(7) ,β=112. 84(3)°, V=7704(4) ￣3 ,M_r = 2102. 9 , Z = 4 , F (000 ) = 4224 , μ= 1 . 028 mm ￣(-1), D_c = 1.813 g/cm￣3 . final R =0. 075 and R_w= 0. 078 based on 4463 observed reflections with F>6. 0σ(F) . The complex consists of [Mo_6O_(19)]￣(2-) ,[Na(DB18C6)]￣+ and CH_3OH, which are linked by long distance interaction through O-Na-O bond.

关键词： synthesis crystal structure crown ether isopoly oxomolybdate

Single-structure 3-axis Lorentz force magnetometer based on an AlN-on-Si MEMS resonator

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Microsystems & Nanoengineering 2024年第3期10卷 75-86页

作者： Cheng tu Xu-heng Ou-Yang Ying-jie Wu Xiao-sheng Zhang School of Integrated Circuit Science and Engineering University of Electronic Science and Technology of ChinaChengdu 611731China

This work presents a single-structure 3-axis Lorentz force magnetometer(LFM)based on an AlN-on-Si MEMS *** operation of the proposed LFM relies on the flexible manipulation of applied excitation currents in different directions and frequencies,enabling the effective actuation of two mechanical vibration modes in a single device for magnetic field measurements in three ***,the excited out-of-plane drum-like mode at 277 kHz is used for measuring the x-and y-axis magnetic fields,while the in-plane square-extensional mode at 5.4 MHz is used for measuring the z-axis magnetic *** different configurations of applied excitation currents ensure good crossinterference immunity among the three *** to conventional capacitive LFMs,the proposed piezoelectric LFM utilizes strong electromechanical coupling from the AlN layer,which allows it to operate at ambient pressure with a high *** understand and analyze the measured results,a novel equivalent circuit model for the proposed LFM is also reported in this work,which serves to separate the effect of Lorentz force from the unwanted capacitive *** demonstrated 3-axis LFM exhibits measured magnetic responsivities of 1.74 ppm/mT,1.83 ppm/mT and 6.75 ppm/mT in the x-,y-and z-axes,respectively,which are comparable to their capacitive counterparts.

关键词： resonator Lorentz structure

Formation and properties of a Zr-based amorphous coating by laser cladding

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Rare Metals 2024年第4期43卷 1809-1814页

作者： Ning Zhang Ying Liu Wei Yang shu-jie Pang Key Laboratory of Aerospace Materials and Performance(Ministry of Education) School of Materials Science and EngineeringBeihang UniversityBeijing100191China

(Zr_(0.53)Al_(0.1)Ni_(0.05)Cu_(0.3)Ti_(0.02))_(99)Y_1(at%)coating with amorphous layer of about 180μm thick was prepared on a steel substrate by using laser cladding *** coating is compact and shows good metallurgical bonding with *** microstructure,microhardness and corrosion behavior along the depth from the coating surface to the substrate were *** is found that a gradient structure consisted of amorphous surface layer,amorphous-crystalline transitional layer and substrate is formed after the laser *** microhardness and corrosion behavior exhibit variation with the microstructural evolution at different depths from the coating *** microhardness and corrosion resistance in 3.5 wt%NaCl solution of the amorphous surface layer are comparable to those of the as-cast Zr-based BMG with the same composition,and higher than those of the steel substrate.

关键词： Laser cladding Amorphous coating Microstructure Hardness Corrosion resistance

Synthesis and Crystal Structure of Co(C_6NO_2H_4)_3. H_2O

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Chinese Journal of Structural Chemistry 1997年第5期16卷 376-379页

作者： ZI Feng-Lan ZHOU Yin-Zhuang tu shu-jie LIU shun-Cheng(Department of Chemistry, Capital Nimal University, Beijing, 100037)JIN Xiang-Lin(Institute of Physical Chemistry, Beijing University, Beijing, 100871) Department of Chemistry Capital Normal University Beijing 100037 China Institute of Physical Chemistry Beijing University Beijing 100871 China

The reaction of CoCl2. 6H2O with picolinic acid gives the title compound Co-(C6NO3H4)3. H2O at room temperature. The crystallographic data for Co(C6NO3H5)3. H2O: monoclinic, space group C2/c, a= 29. 8316(6), b= 8. 573(2),c= 13. 835(3) , β= 95. 93(3)°, Z= 16, Mr=443. 3, Dc= 1. 673 g/cm3, μ(MoKa)= 1. 109 mm-1, F (000) = 1808, R =0. 036, R. =0.048 for 2497 independent observed reflections [F≥4.0σ(F)]. The Co atom is coordinated by three oxygen andthree nitrogen atoms, forming a distorted octahedral coordination geometry. In the unitcell, two kinds of isomerides are included. They are the mirror images to each other.

关键词： synthesis crystal structure cobalt complex isomer

Assessment of the Characteristics of Demersal Fish Communities Using Species-and Trait-Based Approaches in the Coastal Habitats Along Rongcheng Bay,Shandong Peninsula,China

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Journal of Ocean University of China 2024年第3期23卷 786-796页

作者： YUAN shunjie SUN Xin tu Zhong SUN jie WANG Xianning ZHANG Peidong Key Laboratory of Mariculture(Ocean University of China) Ministry of EducationQingdao 266003China Shandong Fisheries Development and Resource Conservation Center Yantai 264003China

Biodiversity declines have motivated many studies on the relationship between species diversity and ecosystem *** this study,we described the spatial-temporal characteristics of demersal fish communities along a coastal habitat in Rongcheng Bay,Shandong Peninsula,China with both species-based and biological trait-based *** field survey was carried out monthly using traps from April to October of 2018,and divided into three seasons(spring:April and May;summer:June,July and August;autumn:September,October and November).The study area included five distinct habitats:seagrass bed,natural rocky reef,bare sand,artificial reef together with natural rocky reef,and artificial reef together with bare *** analyzed the fish communities with three taxonomic diversity indices,including Shannon-Wiener,Simpson,and Pielou Evenness,as well as four functional diversity indices,including FRic,FEve,FDiv,and FDis,based on 7 functional groups which are categorized into 27 *** results showed that there were no significant differences in taxonomic diversity indices among different habitats in the three ***,significant differences were found in the functional richness of fish communities among different habitats in three *** bed represented the highest functional richness in spring and *** study demonstrates that seagrass bed is very important in enhancing the functional diversity of fish communities in a complex *** study also indicates that the combination of taxonomic diversity and functional diversity will provide a more detailed description of the characteristics of fish communities.

关键词： complex habitat biological traits biodiversity fish communities

Secoemestrin C Ameliorates Psoriasis-like Skin Inflammation in Mice by Suppressing the TNF-α/NF-κB Signaling Pathway

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Current Medical Science 2024年第1期44卷 232-240页

作者： Zhi-bin ZHU Meng-jie LIU Jing WANG Zhou shu jie CAO Department of Stomatology Chengdu Seventh People's HospitalChengdu 610044China Department of Pharmacy Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China

Objective Secoemestrin C(SC),an epitetrathiodioxopiperazine isolated from Aspergillus nidulans,has been previously reported to have immunomodulatory and hepatoprotective effects against acute autoimmune ***,the effect of SC on regulating the inflammation and its underlying mechanisms in the pathogenesis of psoriasis remain *** study aimed to evaluate the effects of SC on inflammatory dermatosis both in vitro and in *** In vitro,HaCaT cells were induced with tumor necrosis factor-alpha(TNF-α,10 ng/mL)to establish an inflammatory injury model,and the expression of nuclear transcription factor-κB(NF-κB)pathway components was measured using qRT-PCR and Western *** in vivo mouse model of imiquimod(IMQ)-induced psoriasis-like skin inflammation was used to evaluate the effectiveness of SC in alleviating *** SC significantly blocked the activation of NF-κB signaling in TNF-α-stimulated HaCaT *** addition,systemic and local administration of SC improved psoriatic dermatitis in the IMQ-induced mouse *** reduced skin scale and significantly inhibited the secretion of inflammatory factors in skin *** The protective effect of SC against psoriatic-associated inflammation reveals its potential therapeutic value for treating psoriasis.

关键词： secoemestrin C(SC) psoriasis tumor necrosis factor-alpha(TNF-α) nuclear transcription factor-kB(NF-kB) inflammation