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色谱法分离与检测丙环唑顺反异构体 总被引:3,自引:0,他引:3
通过薄层层析分离并制备了丙环唑的cis-外消旋体与trans-外消旋体及2RS,4S-丙环唑的2R,4S-体系与2S,4S-体。同时分别用高效液相色谱的正相柱与反相柱分离并检测了上述各异构体,其中正相柱对顺反异松体的分离效果好,定量精确,相对标准偏差小于1%,反相柱分离效果略差,相对标准偏差1-2%。 相似文献
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用微波技术在无溶剂条件下合成了4个6-位取代的2-甲基-3-乙氧羰基-4-喹啉酮类化合物,其结构经红外光谱和元素分析表征,并用X-射线衍射法测定了取代基为甲氧基的标题化合物的晶体结构,其晶体属单斜晶系,P21/n空间群,a=0.67780(14)nm,b=O.68990(14)nm,c=2.7329(6)nm,β=92.34(3).,V=1.2769(5)nm3,Z=4,M r=261.27,D c=1.359g/cm3,μ=0.100mm-1,S=1.097.F(000)=552,最终偏离因子为R1=0.087,wR2=0.200.分子间氢键N-H…O和π-π堆积作用使该化合物分子形成稳定的三维结构. 相似文献
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The title compound 1-(β-D-glucopyranosyl)-3-amino-5-methyl- 1H- 1,2,4-triazole was synthesized and characterized by IR, 1H-NMR and elemental analysis. Its single crystals of 2H2O adduct suitable for X-ray analysis were obtained by the slow evaporation of a H2O solution and its structure was determined by single-crystal X-ray diffraction. The crystal belongs to orthorhombic, space group P212121 with a = 7.7490(15), b = 10.424(2), c = 17.447(4) A^°, V = 1409.3(5) A^°^3, Z= 4, C9H20N4O7, Mr = 296.29, Dc = 1.396 g/cm^3,μ = 0.120 mm^-1, S = 1.007, F(000) = 632, R = 0.0686 and wR = 0.1560 for 1217 observed reflections with I 〉 20(I). The title molecules are linked through intermolecular hydrogen bonds to form two 1-D chain structures, and such adjacent chains are further linked by intermolecular hydrogen bonds and H2O bridges to form a 3-D supramolecular network structure. The preliminary bioassay results showed that the title compound exhibits fungicidal activities against Gibberella zeae and Colletotrichum orbiculare. 相似文献
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