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Synthesis and Crystal Structure of Dinuclear Copper Complex [Cu(CH_2O(C_6H_4)N=C(C_6H_4)O)(Py)]_2

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Chinese Journal of Structural Chemistry 2002年第1期21卷 55-59页

作者： NIU De-Zhong MU Lai-Long lu zai-sheng WANG Yu-Cheng Department of Chemistry Xuzhou Normal UniversityJiangsu 221009China Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou350002China

The complex [Cu2L2(Py)2] (H2L=2-aminobenzoic alcohol condensation salicylaldehyde) was obtained. A single-crystal X-ray study shows that the complex is a binuclear compound (Cu2C38H32N4O4). The coordination geometry about each copper atom is best described as a distorted square pyramid. The compound [Cu2L2(Py)2] belongs to monoclinic system with space group P21, lattice constants: a = 10.3881(1), b = 17.9724(1), c = 17.5800(2) ? b =90.4880(1), V= 3282.05(5) 3, Z= 4, Mr =735.75, Dc=1.489 g/cm3, m= 1.344mm-1, F(000) = 1512, R=0.0519, wR=0.1092 for 6725 reflections with I >2s(I). The distances between Cu(II) and O atoms are range from 1.898(6) to1.976(5)? between Cu(II) and N atoms are range from 1.990(6) to 2.369(7)? The Cu(1)Cu(2) bond length is 3.024(4) ?

关键词：铜配合物 2-氨基苯甲醇合成晶体结构

Nitrogen–sulfur co-doped porous carbon derived from asphalt as efficient catalyst for oxygen reduction

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Rare Metals 2024年第1期43卷 380-388页

作者： Jing-sheng Ma Ming-zai Wu Ling Chen Li-Xing Zhang Ying Xiong Key Laboratory of Structure and Functional Regulation of Hybrid Materials Ministry of EducationInstitute of EnergyHefei Comprehensive National Science CenterAnhui UniversityHefei 230601China

As an environment-friendly and low-cost petrochemical by-product, asphalt has great potential in the preparation of metal-free oxygen reduction electrocatalysts with excellent performance and outstanding stability. In this paper, we converted asphalt into porous carbon nanosheets by a simple activation method, using potassium citrate as the swelling agent.

关键词： stability porous catalyst

Synthesis and Crystal Structure of [(Praseodymium)_2(3,5-Binitro Benzoyloxy)_6 (Dimethyl Sulfoxide)_4] Complex

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Chinese Journal of Structural Chemistry 2001年第3期20卷 473-477页

作者： NIU De-Zhong MU Lai-Long lu zai-sheng WANG Yu-Cheng CHEN Jiu-Tong Department of Chemistry Xuzhou Normal UniversityJiangsu 221009China Fujian Institute of Research on the Structure of Matter Chinese Academy of SciencesFuzhou 350002China

A novel one-dimensional chain complex [Pr2(bnbo)6(DMSO)4] (bnbo=3,5-binitro benzoyloxy, DMSO= dimethyl sulfoxide) with bridging carboxyl groups was synthesized and its structure has been determined by single-crystal X-ray methods. In the complex, a pair of adjacent metal ions are alternately connected by four or two carboxylate groups to form an infinite chain of 8-coordinated Pr3+ ions. The complex (Pr2C50H42N12O40S4 ) crystal system is triclinic, with space group P1, a=14.2890(3), b=14.3427(3), c=20.1601(2)? =76.636(1), b=84.496(1), =60.316(1)? V=3491.4(1)?, Z=2, Mr =1861.02, Dc=1.770 g/cm3, m=1.608mm-1, F(000)=1856, the final R=0.0776 and wR=0.1724 for 8804 reflections with I > 2s(I).

关键词： crystal structure praseodymium 3 5-binitro benzoyloxy dimethyl sulfoxide complex

Synthesis and Crystal Structure of cis-Bis(3-hydroxy2-ethyl-4-pyranonato)dioxomolybdenum(Ⅵ)

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Chinese Journal of Structural Chemistry 2003年第5期22卷 573-576页

作者： lu zai-sheng② NIU De-Zhong LI Xiu-Ling (Department of University, Xuzhou Normal University, Xuzhou 221009, China) Department of University Xuzhou Normal University Xuzhou 221009

The complex MoO2(C7H7O3)2 has been prepared by the reaction of 3-hydroxy- 2-ethyl-4-pyranone with (NH4)6Mo7O244H2O. The single-crystal X-ray study shows that the coordination sphere about the molybdenum atom in the complex consists of six oxygen atoms arranged in a distorted octahedral geometry with the dioxo ligands in cis positions. The crystal is of monoclinic, space group P21/c with a = 8.3968(2), b = 12.7534(4), c = 14.5443(4) ? b = 96.277(1), V = 1548.18(7) ?, Z = 4, C14H14O8Mo, Mr = 406.19, Dc = 1.743g/cm3, m = 0.886mm-1, F(000) = 816, R = 0.0444 and wR = 0.1091 for 2336 observed reflections with I>2s(I). The average Mo=O bond length is 1.695(4) ? The two ketonic oxygen atoms of the pyranone moieties are trans to the oxo ligands and the hydroxy oxygen atoms are trans to each other. The average MoO bond lengths are 2.248(4) ?for the ketone oxygens and 2.005(3) ?for the hydroxy oxygens. The average ligand bite angle of OMoO is 75.2(2) and the bond angle between two Mo=O is 105.1(2). The dihedral angle is 79.16(2)?between two chelate ring planes.

关键词： crystal structure molybdenum(VI) complex 3-hydroxy-2-ethyl-4-pyranone

Crystal Structure of Trans-2-Amino-3-Cyano-4-(3',4'-Methylenedioxyphenyl)-1-Phenyl-2-Cyclopentene-r-1-ol

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Chinese Journal of Structural Chemistry 1998年第1期17卷 27-30页

作者： SHI Da-Qing MU Lai-Long lu zai-sheng DAI Gui-Yuan (Department of Chemistry, Xuzhou Normal University, Xuzhou 221009) 徐州师范大学化学系江苏徐州

The crystals of the title compound C19H16N2O3 were synthesized by thereaction of 4, 4-dicyano-1-phenyl-3-(3', 4'-methylenedioxyphenyl)-l-butan withlow-valent titanium reagent. It belongs to the orthorhombic system, space group Pea21with a=11. 547(2), b=13. 168(4), c=10. 645(3) A, V=1618. 4(8) A3, Dc=1.315 g/cm3, Z=4, Mr=320.35. A=0. 71069 A, u(MoKa) =0. 90 cm-1, F(000)=672. The structure was refined to R=0. 036, Rw=0. 044 for 962 observed reflections(I＞3(I) ). X-ray analysis reveals that in the five membered ring the C(11) -C(12)bond is longer than normal double C=C bond while the C(11) -N (1) bond is shorterthan normal C(sp)2-N bond.

关键词： 2-cyclopentene-1-ol cyclization reaction crystal structure

Crystal Structure of Methyl 3- (2-chlorophenyl )-3- (5, 5-dimethyl-3-hydroxy-2-cyclohexene- 1-one-2-yl) propionate

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Chinese Journal of Structural Chemistry 1998年第4期17卷 249-252页

作者： SHI Da-Qing lu zai-sheng TU Shu-Jiang WANG Su-Hui DAI Gui-Yuan(Department of Chemistry, Xuzhou Normal University, Xuzhou 221009) 徐州师范大学化学系江苏徐州

The title compound C18H21ClO4 was synthesized by the reaction of 2-chlorobenzaldehyde, 5, 5-dimethyl-1, 3-cycfohexanedione and isopropylidene malonatein methanol catalyzed by KF-Al2O3 It crystallized in the monoclinic system, spacegroup P21/c, with a = 7. 587(2), b = 11. 736(3), c = 19. 120(7) A, β =101. 30°, V=1669.5(9) A 3, Dc= 1. 340 g/cm3, Z= 4, Mr= 336. 81, A= 0. 71069A, μ（MoKa) =2. 46 cm-1, F(000) = 712. The structure was refined to R=0. 034,Rw=0. 042 for 1468 observed refiections (I>3(I) ). X-ray analysis reveals that thedihedral angle between plane I[C(12)~C(17), Cl] and plane 2[O(1), O(2), C(1),C(2), C(3)] is 66. 98° and the C(11) atom exhibits a distorted tetrahedral configuration. The crystal structure shows that there is a conjugated enol form in the molecule.

关键词： methyl propionate synthesis crystal structure

Small extracellular vesicles derived from human induced pluripotent stem cell-differentiated neural progenitor cells mitigate retinal ganglion cell degeneration in a mouse model of optic nerve injury

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Neural Regeneration Research 2025年第2期20卷 587-597页

作者： Tong Li Hui-Min Xing Hai-Dong Qian Qiao Gao sheng-Lan Xu Hua Ma zai-Long Chi State Key Laboratory of Ophthalmology Optometry and Visual ScienceEye HospitalWenzhou Medical UniversityWenzhouZhejiang ProvinceChina National Clinical Research Center for Ocular Diseases Eye HospitalWenzhou Medical UniversityWenzhouZhejiang ProvinceChina

Several studies have found that transplantation of neural progenitor cells(NPCs)promotes the survival of injured ***,a poor integration rate and high risk of tumorigenicity after cell transplantation limits their clinical *** extracellular vesicles(sEVs)contain bioactive molecules for neuronal protection and *** studies have shown that stem/progenitor cell-derived sEVs can promote neuronal survival and recovery of neurological function in neurodegenerative eye diseases and other eye *** this study,we intravitreally transplanted sEVs derived from human induced pluripotent stem cells(hiPSCs)and hiPSCs-differentiated NPCs(hiPSC-NPC)in a mouse model of optic nerve *** results show that these intravitreally injected sEVs were ingested by retinal cells,especially those localized in the ganglion cell *** with hiPSC-NPC-derived sEVs mitigated optic nerve crush-induced retinal ganglion cell degeneration,and regulated the retinal microenvironment by inhibiting excessive activation of *** analysis further revealed that hiPSC-NPC derived sEVs transported neuroprotective and anti-inflammatory miRNA cargos to target cells,which had protective effects on RGCs after optic nerve *** findings suggest that sEVs derived from hiPSC-NPC are a promising cell-free therapeutic strategy for optic neuropathy.

关键词： exosome miRNA neural progenitor cell neurodegeneration neuroinflammation neuroprotection optic nerve crush optic neuropathy retinal ganglion cell small extracellular vesicles

非对映消旋体2-氨基-3-氰基-1-苯基-4-(3,4-亚甲二氧苯基)-2-环戊烯-1-醇的合成和晶体结构

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高等学校化学学报 1998年第9期19卷 1426-1430页

作者：史达清路再生戴桂元徐州师范大学化学系

用低价钛试剂（ＴｉＣｌ４－Ｚｎ）与３－氧代－１－（３，４－亚甲二氧苯基）－３－苯基丙基－１－丙二腈反应合成了非对映消旋体（１Ｓ，４Ｒ；１Ｒ，４Ｓ）和（１Ｓ，４Ｓ；１Ｒ，４Ｒ）２－氨基－３－氰基－１－苯基－４－（３... 详细信息

用低价钛试剂（ＴｉＣｌ４－Ｚｎ）与３－氧代－１－（３，４－亚甲二氧苯基）－３－苯基丙基－１－丙二腈反应合成了非对映消旋体（１Ｓ，４Ｒ；１Ｒ，４Ｓ）和（１Ｓ，４Ｓ；１Ｒ，４Ｒ）２－氨基－３－氰基－１－苯基－４－（３，４－亚甲二氧苯基）－２－环戊烯－１－醇，用Ｘ射线衍射分析确定了这两个异构体的相对构型．

关键词：低价钛试剂非对映消旋体晶体环戊烯醇异构体

顺式和反式-2-氨基-3-氰基-4-苯基-1-(4'-甲基苯基)-2-环戊烯-1-醇的合成和晶体结构

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化学学报 1998年第6期56卷 550-556页

作者：史达清路再生沐来龙戴桂元徐州师范大学化学系徐州221009

用低价钛试剂(TiCl_4-Zn)与4,4-二氰基-3-苯基-1-(4＇-甲基苯基)-1-丁酮反应合成了顺式和反式-2-氨基-3-氰基-4-苯基-1-(4＇-甲基苯基)-2-环戊烯-1-醇。

关键词：氨基氰基苯基甲基苯基环戊烯醇合成晶体