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201.
利用药物奥沙拉秦钠,邻菲罗啉与Cd(ClO4)2·6H2O或Co(NO3)2·6H2O水热反应分别得到其配合物的晶体[Cd(OSA)(Phen)(H2O)]n (1)(OSA=3,3′-偶氮-二(6-羟基苯甲酸))和[Co(OSA)(Phen)(H2O)]n (2)。单晶结构分析表明两化合物均为一维链状聚合结构,两者的晶体的空间群皆为C2/c。两化合物中,中心金属的配位几何构型均为五配位的五角双锥。3,3′-偶氮-二(6-羟基苯甲酸)通过羧基桥连金属离子形成一维链状聚合物结构。 相似文献
202.
双(三有机锡)2,3-吡啶二甲酸酯的合成、表征和体外抗癌活性 总被引:3,自引:0,他引:3
合成了2个新的双(三有机锡)2,3-吡啶二甲酸酯2,3-C5H3N(CO2SnR3)2 (R=c-C6H11,1;C6H5C(CH3)2CH2,2),利用元素分析、IR和1H NMR表征了其结构。通过X-射线单晶衍射测定了配合物2的晶体结构。该化合物晶体属单斜晶系,空间群P21/n,a=0.955 3(1),b=1.811 8(2),c=3.533 9(4) nm,β=94.914(2)°,Z=4,V=6.094 1(13) nm3,R=0.038 4,wR=0.096 6,S=1.015。2,3-吡啶二甲酸的2个羧基键连2个三有机锡,2个锡原子均为畸变的四面体配位构型。生物活性测试结果表明,化合物1和2对3种人癌细胞HeLa、CoLo205和MCF-7具有好的体外抗癌活性。 相似文献
203.
采用新型Salen中间体I(由3,5-二叔丁基水杨醛、2,6-二酰基-4-甲基苯酚、(R,R)环己二胺为原料合成)合成了4个新型手性双核Salen配合物[Zn2L·3H2O (2)、Cu2L·H2O (3)、CO2L (4)、Ni2L (5)],(L是由中间体I和邻苯二胺合成的手性二聚Salen配体)。用1H NMR、FTIR、UV-Vis、CD光谱对配体和配合物进行了表征,详细讨论了红外光谱、电子吸收光谱、圆二色光谱的性质。采用激子耦合理论解释了此类手性化合物圆二色谱的Cotton效应和Cotton裂分,Cotton裂分的方向依赖于环己二胺的构象,(R,R)环己二胺决定了Salen化合物的手征性为负。 相似文献
204.
Shipra Baluja Pranav Inamdar Mayur Soni 《物理化学学报》2004,20(9):1104-1107
Density, viscosity and ultrasonic velocity of solutions of four Schiff bases in 1, 4-dioxane and dimethylformamide (DMF) were measured at 308. 15 K. Various acoustical properties such as specific impedance (Z), adiabatic compressibility (κ), Rao‘s molar sound function (Rm), the van der Waals constant (b), molar compressibility (W),intermolecular free length (L1), relaxation strength ( r ), solvation number ( Sn), were calculated. The results are interpreted in terms of molecular interactions occurring in the solutions. 相似文献
205.
合成了2个新型的多齿配体:2,9-二-[1′-(2″-苯并咪唑基)-2′-氮杂-正丙基]-1,10-菲罗啉(L1)和2,9-二-[2′-(2″-苯并咪唑基)-3′-氮杂-正丁基]-1,10-菲罗啉(L2)并且用元素分析和 1H NMR谱作了表征。在25 ± 0.1 ℃,运用pH电位滴定法对这2个新的配体及其与过渡金属离子M(Ⅱ)(M=Co,Ni,Cu,Zn)和稀土金属离子Ln(Ⅲ)(Ln=La,Nd,Sm,Eu,Gd)的配合物进行了热力学稳定性研究。结果表明配体和金属离子的配位比为1∶1,但是,这2个系列的配合物在稳定性方面存在很大差异。 相似文献
206.
A flow-injection chemiluminescence (CL) method for the determination of melatonin based on the CL reaction of melatonin with hydrogen peroxide and sodium hypochlorite (NaOCl) in a basic alkaline solution was developed. The possible CL mechanism has been discussed, and a proposal for the reaction pathway was given that singlet oxygen was clarified to be produced in this reaction system and was responsible for the CL emission. Under the optimized conditions, the linear concentration range of application was 1.0×10^-7-2.5 × 10^-4 moloL-I with a de- tection limit of 5.0 ×10^-8 moloL-1 (S/N= 3). The relative standard deviation for eight repeated measurements of 1.0×10^-6 mol·L^-1 melatonin was 2.8%. The interferences of several important biological substances, some indole compound, cations and anions were studied. No interference was found for the anions, glucose, starch, most of cations and low concentration (less than 3.0 × 10^-6 mol·L^-1) of some biological substances and indole compound. The method was applied to the determination of melatonin in rat pineal gland and drug with satisfactory results. The sample throughput was 90 injections per hour. 相似文献
207.
A new coordination polymer of Cd(Ⅱ) was prepared by the reaction of Cd(ClO4)2·6H2O with mixed ligands, namely, neutral double betaine derivative 1,3-bis(pyridinio-4-carboxylato)propane and SCN- anion in aqueous solution. The crystal structure of 1 has been determined by single-crystal X-ray diffraction methods. Crystal data for 1: orthorhombic, space group P212121, a=1.050 9(2), b=1.162 8(2), c=1.649 5(3) nm, V=2.015 7(7) nm3, Z=4, F(000)=1 064, Dc=1.756 g·cm-3, the final R=0.050 8 and wR=0.130 1 for 3 530 observed reflections [I>2σ(I)]. Crystal structure of 1 indicates that the ( μ-1,3-NCS) bridging NCS- ligand connects neighboring cadmium atoms, leading to a single strand helical chain which propagates along crystallographic a axis. The metallic nodes of adjacent helical chains are linked by monodentate-monodentate coordination mode of both carboxylate groups in L molecules to generate 2D coordination sheet which parallels to the (001) plane. Adjacent layers are further joined by C-H…O hydrogen bonds; the structure thus expanded into a three-dimensional network. CCDC: 612657. 相似文献
208.
选择含有烯丙基亚胺酚为辅助配体,设计合成了5个ⅣB族钛锆金属络合物[{CH2=CHCH2N=CH-C6H3(3-R)O}2MCl2](4a:R=t-Bu,M=Zr;4b:R=t-Bu,M=Ti;4c:R=Ph,M=Zr;4d:R=Ph,M=Ti)和[{(CH3)2CHCH2N=CH-C6H3(3-t-Bu)O}2ZrCl2] (5),对它们进行了红外光谱、核磁共振及元素分析表征。并用X-射线单晶衍射法测定了化合物4a和4d的晶体结构。部分配合物在助催化剂MMAO的作用下对烯烃聚合显示了较好的催化活性,其中自固载催化剂4a生成了双峰分布的聚烯烃产品 (Mw/Mn=15.3~31.9)。 相似文献
209.
The title complex [Zn(C14H8N2O3Br2)(C5H5N)3] was synthesized in DMF and pyridine. It has been characterized by IR, element analysis and X-ray diffraction analysis. The crystal structure of the title complex belongs to monoclinic space group P21/c with cell parameters: a=0.999 78(6) nm, b=1.951 11(13) nm, c=1.496 02(10) nm, β=97.126 0(10)°, and V=2.895 7(3) nm3, Dc=1.639 g·cm-3, Z=4, F(000)=1 424, μ=3.647 mm-1, the final R=0.061 0 and wR=0.140 2 for 3 528 observed reflections with I>2σ(I). The X-ray crystal structure analysis revealed that the center zinc(Ⅱ) is bonded to two oxygen atoms and one nitrogen atom from a tridentate ligand and three nitrogen atoms from three solvent pyridine molecules to form a six-coordinate octahedron. CCDC: 261047. 相似文献
210.