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11.
A nickel(II) complex Ni(C14H10N2O2F)2 was synthesized from p-fluorobenzaldehyde salicylhydrazone and Ni(CH3COO)2·4H2O and crystallized by diffusion, the structure of which was characterized by IR spectrum, 1H NMR, and X-ray single-crystal diffraction. The complex crystallizes in monoclinic space group C2/c with a=2.460 6(2) nm, b=0.774 1(1) nm, c=1.534 9(1) nm, β=122.300(1)°, and V=2.471 1(4), Z=8, Dc=1.541 g·cm-3. We reported the IR, 1H NMR, crystal structure. CCDC: 638652. 相似文献
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以2-氨基-5-氟苯甲酸为起始原料,与醋酐酰化关环制得6-氟-2-甲基噁嗪-4-酮(1); 1在80%水合肼中回流反应制得6-氟-2-甲基-3-氨基-4(3H)-喹唑啉酮(2); 2分别与羟基芳醛和杂环芳醛反应合成了6个6-氟-4(3H)-喹唑啉酮类Schiff碱(3a~3f),其中3b~3f为新化合物,其结构经1H NMR, 13C NMR, IR和元素分析表征。采用琼脂扩散法研究了3a~3f对大肠杆菌、金黄色葡萄球菌和枯草杆菌的抑制活性。结果表明:用药浓度为400 μg·mL-1时,3a~3f对受试菌种均有一定的抑制活性,其中6-氟-2-甲基-3-(4-吡咯苯亚甲氨基)-4(3H)-喹唑啉酮(3c)抑菌活性最强,对大肠杆菌和枯草杆菌的抑菌圈直径分别为9.38 mm和9.00 mm。 相似文献
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由水热法合成了2个铜配合物[Cu(INAIP)(bbi)]·5H2O (1)和[Cu(INAIP)(phen)(H2O)]·H2O (2)(H2INAIP=5-异烟酰胺基异酞酸,bbi=1,4-二咪唑基丁烷,phen=1,10-邻菲咯啉),并用元素分析、IR及X-射线单晶衍射等对其进行了表征。晶体结构分析结果表明:配合物1和2都属于单斜晶系,C2/c空间群。配合物1是由1,4-二咪唑基丁烷连接[Cu(INAIP)]一维链形成的二维双层结构,而配合物2是通过π-π堆积作用将[Cu(INAIP)]一维无限链延伸为二维结构,这2个化合物最终均被氢键拓展成三维超分子结构。在1.8~300 K温度范围内测试了配合物1和2的变温磁化率,结果表明配合物1中由羧基桥联的双核铜之间存在弱的反铁磁相互作用,而配合物2表现为顺磁性。 相似文献
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具有生物活性的有机锗化合物研究 总被引:2,自引:0,他引:2
着重综述了国内对具有生物活性的有机锗化合物的研究进展,包括:有机锗倍半氧化物以及含磷、硅、硒、硫有机锗化合物的研究状况。 相似文献
15.
A new complex, [Zn_2(HL)_2(2,5-OH-pbda)]n(1, L = 1-(1 H-imidazol-4-yl)-4-(4 Htetrazol-5-yl)benzene(H_2L) and 2,5-OH-H_2 pbda = 2,5-dihydroxy-terephthalic acid), has been hydrothermally prepared and characterized by single-crystal X-ray diffraction, IR spectroscopy, elemental analysis and PXRD. Complex 1 crystallizes in monoclinic, space group P2_1/n with a = 8.8101(10), b = 17.105(2), c = 9.4014(11) ?, β = 105.704(2)o, V = 1363.9(3) ?`3, Z = 4, C_(14)H_9N_6O_3Zn, M_r = 374.64, D_c = 1.824 g/cm~3, μ = 1.831 mm~(-1), S = 1.042, F(000) = 756, the final R = 0.0309 and w R = 0.1003 for 3130 observed reflections(I 2σ(I)). The H_2L ligand was deprotonated to be an HL-anion, and coordinated with Zn~(2+) to form two-dimensional(2D) Zn_2(HL~-)_2~(2+) sheets, which were pillared by the 2,5-OH-pbda2-ligands to form a three-dimensional(3D) dmc net with Point(Schl?fli) symbol of(4·82)(4·85). The large vacancy of the dmc net is filled via mutual interpenetration of another independent framework, leading to the formation of a 2-fold interpenetrating architecture. Solid state luminescent property of 1 has been investigated. 相似文献
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由水热法合成了2个配合物[Co(1,2,4-HBTC)(tib)](1)和[Ni4(1,2,4-BTC)2(tib)4(H2O)2]·(1,2,4-HBTC).9H2O(2)(1,2,4-H3BTC=1,2,4-苯三甲酸,tib=1,3,5-三(1-咪唑基)苯),并用元素分析、红外光谱、X-射线单晶衍射及热重分析等对其进行了表征。晶体结构分析结果表明:配合物1是由Co(Ⅱ)和tib连接形成的二维层状结构,1,2,4-HBTC2-作为端基配体与Co(Ⅱ)配位,而配合物2是通过1,2,4-BTC3-连接[Ni(tib)]2+二维网形成最终的二维多层结构,这2个化合物最终均被氢键连接形成三维超分子结构。 相似文献
17.
根据车辆左右轮的互功率谱密度和相干函数,推导了左右轮桥面不平顺特性中对应相位角的相干关系,提出了采用相位角相干生成车辆各轮相干桥面不平顺激励的方法,并通过数值算例验证了该生成方法的可靠性.工程应用结果表明,车辆各轮相干桥面不平顺激励增大了桥梁、车辆竖向和车辆俯仰角的振动响应,但降低了车辆侧倾角的振动响应;不同相干函数模型对桥梁振动响应影响较小,但对车辆振动响应影响较大;同一相干函数模型,桥梁振动响应随着相干强度的增大而增大,但车辆振动响应随着相干强度的增大而减小;研究桥面不平顺随机激励对车桥耦合系统振动响应的影响有必要考虑车辆各轮的相干关系. 相似文献
18.
The new compound 3-(2-pyridyl)-4-(p-methoxyphenyl)-5-(2-thienyl)-1,2,4-triazole L was synthesized and characterized by elemental analysis,IR,1H NMR,13C NMR,MS,UV and photoluminescent spectra.The complex CoL2(NCS)2 was prepared by the reaction of ligand L with Co(SCN)2,and its structure was characterized by single-crystal X-ray diffraction,IR,UV,elemental analysis and MS.The complex crystallizes in monoclinic,space group P21/n with a=13.7639(19),b=7.6641(11),c=18.409(3),β=101.549(3)o,V = 1902.6(5) 3,Z=2,C38H28CoN10O2S4,Mr=843.87,Dc=1.473 g/cm3,μ=0.720 mm-1,S=1.075,F(000)=866.0,the final R=0.0825 and wR=0.2149 for 2566 observed reflections(I2σ(I)).In the crystal structure,the cobalt atom adopts a distorted octahedral environment with two NCS-ions in the axial positions and two bidentate chelating L ligands in the equatorial plane.The extended 2D network of the complex is formed by intermolecular C-H…N hydrogen bonds together with π-π stacking interactions. 相似文献
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关于RL-C并联谐振特性曲线的讨论 总被引:3,自引:1,他引:2
从理论上导出了RL-C并联谐振电路的阻抗公式,由此分析谐振特性曲线的性质,并得出献中引用的RL-C谐振特性曲线成立的充分条件。 相似文献