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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

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

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

含取代芳酰腙和单齿N-杂环分子铜(Ⅱ)配合物的合成、结构及荧光性质(英文)

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无机化学学报 2007年第4期23卷 611-614页

作者：刘会艳王海营牛德仲路再生徐州师范大学化学系徐州221116

合成了1个含有取代芳酰腙和单齿N-杂环分子的三元铜配合物[Cu(L)(ampy)](H2L=5-溴水杨醛苯甲酰腙,ampy=2-氨基吡啶),并通过IR、UV、荧光光谱和循环伏安进行了性质研究。[Cu(L)(ampy)]的晶体结构分析表明,中心金属通过酰腙配体的酚基氧... 详细信息

合成了1个含有取代芳酰腙和单齿N-杂环分子的三元铜配合物[Cu(L)(ampy)](H2L=5-溴水杨醛苯甲酰腙,ampy=2-氨基吡啶),并通过IR、UV、荧光光谱和循环伏安进行了性质研究。[Cu(L)(ampy)]的晶体结构分析表明,中心金属通过酰腙配体的酚基氧原子、亚胺基氮原子、去质子酰胺氧原子以及中性杂环分子的氮原子形成平面四方形的N2O2配位环境。配合物通过N-H…O和N-H…N氢键作用形成一维链状结构。

关键词：铜(Ⅱ)配合物晶体结构取代芳酰腙荧光

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基于超拉普拉斯模型的运动去模糊算法

计算机应用研究 2011年第9期28卷 3548-3550页

作者：卢在盛玉振明李陶深广西大学计算机与电子信息学院南宁530004 梧州学院广西梧州543002

通过分析自然图像梯度统计的长尾分布特性,提出一种基于超拉普拉斯模型的图像运动去模糊算法。该算法使用分步交替迭代最小化办法优化能量方程,并在优化过程中采用了查询表法快速求解图像反卷积。实验结果表明,该算法可以在数秒时间内... 详细信息

通过分析自然图像梯度统计的长尾分布特性,提出一种基于超拉普拉斯模型的图像运动去模糊算法。该算法使用分步交替迭代最小化办法优化能量方程,并在优化过程中采用了查询表法快速求解图像反卷积。实验结果表明,该算法可以在数秒时间内处理完成一幅中等大小的图像,并获得较优的复原结果,其复原效果和对振铃现象的抑制均优于维纳滤波法和Richardson-lucy复原法。

关键词：超拉普拉斯运动模糊贝叶斯理论图像反卷积长尾分布