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中性铜(Ⅰ)卤结构单元及其配位聚合物化学 被引量:1
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作者 于杰辉 别海英 +1 位作者 徐吉庆 王铁钢 《无机化学学报》 SCIE CAS CSCD 北大核心 2004年第11期1249-1256,共8页
铜髣卤簇合物的结构化学极其丰富多彩。一方面,以单齿或是多齿螯合型有机配体为辅助配体,铜髣卤自身可形成多种结构类型的孤立的簇或是低聚物,0维的如菱形的二聚体、立方烷型的或是椅式的四聚体,一维的如锯齿链或是楼梯链等等。若有机... 铜髣卤簇合物的结构化学极其丰富多彩。一方面,以单齿或是多齿螯合型有机配体为辅助配体,铜髣卤自身可形成多种结构类型的孤立的簇或是低聚物,0维的如菱形的二聚体、立方烷型的或是椅式的四聚体,一维的如锯齿链或是楼梯链等等。若有机配体具有桥联性质,将桥联孤立的簇或是低聚物形成高维聚合物。本文以文献工作为主,结合自身工作,介绍有关中性铜髣卤簇化合物在结构方面的发展概况。 展开更多
关键词 铜卤化合物 中性化合物 配位聚合物 有机分子协同 有机分子桥联
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含混合价态钒的晶体[N(CH_(3))_(4)]_(4)[H_(5)PMo_(5))V_(9)O_(42)]·3.5H_(2)O的合成与结构 被引量:7
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作者 徐家宁 杨国昱 +9 位作者 林英杰 施展 于杰辉 冯守华 徐吉庆 徐昕 李艳 崔晓辉 黄小荥 杨兰萍 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 2000年第8期1180-1182,共3页
The title compound [N(CH 3) 4] 4 [H 5PMo 5V 9O 42 ] ·3.5H 2O was synthesized by hydrothermal method and its structure was determined with single crystal X ray analysis. The cluster anion is a bicapped Keggin poly... The title compound [N(CH 3) 4] 4 [H 5PMo 5V 9O 42 ] ·3.5H 2O was synthesized by hydrothermal method and its structure was determined with single crystal X ray analysis. The cluster anion is a bicapped Keggin polyanion, two vanadium atoms are distributed at two capping metal atom positions. The crystal is monoclinic, space group C2/c with a=1.284 8(4) nm, b=2.366 4(4) nm, c=2.113 6(4) nm, β= 90.69(2)° , V=6.425(4) nm 3, Z=4, D c=2.07 g\5cm -3 , R=0.066, R w=0.069, S=1.33, \{(Δ/σ) max =\}0 04, \{(Δρ) max =\}91 e·nm -3 . 展开更多
关键词 水热合成 晶体结构 混合价态
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Catalytic epoxidation of olefin over supramolecular compounds of molybdenum oxide clusters and a copper complex 被引量:3
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作者 高洪成 颜岩 +5 位作者 徐晓弘 于杰辉 牛会玲 高文秀 张文祥 贾明君 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2015年第11期1811-1817,共7页
The catalytic epoxidation of olefin was investigated on two copper complex-modified molybdenum oxides with a 3D supramolecular structure, [Cu(bipy)]4[Mo15O47].2H2O (1) and [Cu1(bix)][(Cu1bix) (δ-MoVl8O26)0.... The catalytic epoxidation of olefin was investigated on two copper complex-modified molybdenum oxides with a 3D supramolecular structure, [Cu(bipy)]4[Mo15O47].2H2O (1) and [Cu1(bix)][(Cu1bix) (δ-MoVl8O26)0.5] (2) (bipy = 4,4'-bipyridine, bix = 1,4-bis(imidazole-1-ylmethyl)benzene). Both compounds were catalytically active and stable for the epoxidation of cyclooctene, 1-octene, and styrene with tert-butyl hydroperoxide (t-BuOOH) as oxidant. The excellent catalytic performance was attributed to the presence of stable coordination bonds between the molybdenum oxide and copper complex, which resulted in the formation of easily accessible Mo species with high electropositivity. In addition, the copper complex also acted as an active site for the activation of t-BuOOH, thus im- proving these copper complex-modified polyoxometalates. 展开更多
关键词 Supramolecular compound Molybdenum oxide cluster Copper complex Olefin Epoxidation
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提高化学实验室管理水平的探讨
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作者 屈学俭 王润伟 +6 位作者 于雪峰 于杰辉 徐家宁 宋天佑 崔振锋 张学伟 叶义昌 《广西师范大学学报(自然科学版)》 CAS 2003年第z1期142-143,共2页
化学实验室是理科院校化学类院系的重要教学实验室.提高实验室管理水平,更加规范地管理实验室,发挥其资源效率,以便更好地为教学服务.
关键词 化学 实验室 管理
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有机多羧酸为桥连配体的过渡金属配位聚合物化学——[Fe(μ_4-bta)_(0.5)(phen)(OH)]_n的合成与结构表征 被引量:5
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作者 徐吉庆 储德清 +2 位作者 于杰辉 王铁钢 唐敖庆 《中国科学(B辑)》 CAS CSCD 北大核心 2003年第5期434-440,共7页
以FeCl_3·6H_2O,Na_4bta(H_4bta=1,2,4,5-benzentetracarboxilic acid),1,10-phen(1,10-phenanthroline)和H_2O为原料,用水热技术合成出了以均苯四甲酸根为桥连配体的新的二维配位聚合物[Fe(μ_4-bta)_(0.5)(phen)(OH)]_n(1).化合... 以FeCl_3·6H_2O,Na_4bta(H_4bta=1,2,4,5-benzentetracarboxilic acid),1,10-phen(1,10-phenanthroline)和H_2O为原料,用水热技术合成出了以均苯四甲酸根为桥连配体的新的二维配位聚合物[Fe(μ_4-bta)_(0.5)(phen)(OH)]_n(1).化合物1的晶体属于单斜晶系,P2_1/n空间群,a=1.0129(2),b=0.9265(2),c=1.5696(3)nm,β=91.37(3)°,V=1.4721(5)nm^3,Z=3。一致性因子R_1=0.0292,wR_2=0.0798。结构测定结果表明,化合物中,每个bta配体连接四个Fe~Ⅲ单元,构成新的μ_4-配位模式,bta的四个脱质子的羧基,交替地以单齿和双齿配位方式与Fe~Ⅲ离子连接,构成二维无限层状结构。磁性测试结果表明,该化合物中存在着反铁磁相互作作用。热失重谱显示出,它具有较好的热稳定性。此外,还测定了化合物的IR及UV-Vis谱。 展开更多
关键词 过渡金属配位聚合物 有机多羧酸 桥连配体 [Fe(μ4-bta)0.5(phen)(OH)]n 合成 结构表征
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Hydrothermal Synthesis and Characterization of a One-Dimensional Copper(I) Halide Cluster with 1,10-Phenanthroline 被引量:1
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作者 于杰辉 施展 +7 位作者 徐吉庆 崔小兵 丁红 荆维杰 储德清 华佳 徐家宁 王铁钢 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2002年第6期560-563,共4页
The title compound Cu 2Cl 2phen (phen=1,10 phenanthroline, C 12 H 8N 2) 1 was synthesized from CuCl 2·2H 2O, CuCl and phen by hydrothermal method and its structure was determined by single crystal X r... The title compound Cu 2Cl 2phen (phen=1,10 phenanthroline, C 12 H 8N 2) 1 was synthesized from CuCl 2·2H 2O, CuCl and phen by hydrothermal method and its structure was determined by single crystal X ray analysis. With phen, CuCl forms one dimensional chains, which comprise two zigzag chains based on fused Cu X units and connected via covalent bonds. The compound contains two crystallographically unique monovalent copper ions, Cu(1) and Cu(2). The Cu(1) atom in the tetrahedral site, is coordinated to two bridging Cl - and two N atoms in phen. The Cu(2) atom with a slightly distorted triangular planar geometry, is coordinated to three Cl -. The compound 1 was crystallized in monoclinic, space group P 2 1/ n with a = 0.37338(4) , b =1.9510(2), c =1.68008(19) nm, β =95.605(3)°, R =0.0458, and was characterized by elemental analysis, IR spectrum and TGA analysis. 展开更多
关键词 hydrothermal synthesis crystal structure copper(I) halide 1 10 phenanthroline
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Hydrothermal Syntheses, Supramolecular Structures and the Third-order Non-linear Optical Properties of Three Copper(I) Halide Amine Complexes Connected via Secondary Bonding Interactions 被引量:1
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作者 于杰辉 徐吉庆 +7 位作者 韩力 王铁钢 施展 荆维杰 丁红 徐家宁 贾鸿斌 华佳 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2002年第9期851-857,共7页
The hydrothermal reactions of CuI, KI and bidentate amines [ 1,10 phenanthroline (phen) or ethylenediamine (en)] gave the three copper(I) halide compounds, Cu3I3(phen)2 (1), CuI(phen)2 (2) and 2 (3), which were stru... The hydrothermal reactions of CuI, KI and bidentate amines [ 1,10 phenanthroline (phen) or ethylenediamine (en)] gave the three copper(I) halide compounds, Cu3I3(phen)2 (1), CuI(phen)2 (2) and 2 (3), which were structurally characterized via singlecrystal Xray diffraction studies. Hydrogen bonds and ππ interactions are the most remarkable structural features of the title compounds. All can be described as higherdimensional supramolecular compounds connected via these secondary bondings. Moreover, the title compounds were characterized by elemental analyses, IR spectra and TGA analyses. The thirdorder nonlinear optical properties of the title compounds were also investigated and all exhibit nicer nonlinear absorption and selffocusing performance.Keywords copper(I) halide, hydrothermal synthesis, the thirdorder nonlinear optical property, supramolecular structure 展开更多
关键词 copper(I) halide hydrothermal synthesis the third order non linear optical property supramolecular structure
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Syntheses and Characterization of Several Copper-halo Clusters
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作者 于杰辉 徐吉庆 +3 位作者 宋玉江 别海英 卢静 王铁钢 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2005年第8期1030-1036,共7页
The hydrothermal reaction of CuBr2 and CuBr with phen·H2O (phen= 1,10-phenanthroline) in a molar ratio of 1:1:1.5 gave birth to the first copper-halo cationic cluster [Cu2^Ⅱ Cu2^Br4 (phen)4 ] ^2+(1) wit... The hydrothermal reaction of CuBr2 and CuBr with phen·H2O (phen= 1,10-phenanthroline) in a molar ratio of 1:1:1.5 gave birth to the first copper-halo cationic cluster [Cu2^Ⅱ Cu2^Br4 (phen)4 ] ^2+(1) with tetranuclear anionic cluster [Cu4Br6]^2-. Changing the precursors or their molar ratios, two mononuclear complexes [Cu(phen)2Br]Br·H2O (2) and [Ni(phen)3][CuCl2]2 (3) as well as two unusual copper-halo chains found in polymers [Cu2Br2(phen)]∞ (4) and [Cu^ⅡCu3^ⅠBr2Ⅰ3 (phen)2 ]∞ (5) were obtained. The (Cu2Br2)∞ chain of 4 looks like a linearar ray of hexagons based on fused Cu3Br3 units, and the linear (Cu3Ⅰ3Br^-)∞ chain of 5 is an alternate combination of the rhombic Cu2I2 cores and the Cu4I4Br2^2- units. In addition, the hydrothermal reaction of CuBr2 with NA(NA=nicotinic acid) or INA (INA =isonicotinic acid) resulted in the syntheses of two compounds [CuBr(NA)] (6) and [CuBr(INA)]∞(7) containing staircase chain. Among them the third-order non-linear optical properties of 2, 5, 6 and 7 were investigated and all exhibit the reverse saturable absorption (α2〉0) and self-defocusing performance (n2〈0). 展开更多
关键词 copper-halo cluster 1 10-PHENANTHROLINE hydrothermal synthesis crystal structure non-linear optics
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Correctionto Chin .J .Chem .2002,20,851— 857
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作者 于杰辉 徐吉庆 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2002年第12期1621-1622,共2页
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