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1 INTRODUCTIONRecently,thiosemicarbazoneshaveattractedmuchattentionwithinbiologicalsystemandcoordinationchemistry.[1-3]IthasbeenpostulatedthatmanyNheterocycliccarbaldehydethiosemicarbazonesactastridentateN2Sligandswhichbondtoironorcopperinthesynthesisofp… 相似文献
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详细报道了二硫纶联吡啶过渡金属配合物M(mnt)(bpy),M=Mn(Ⅱ)、Fe(Ⅱ)、Co(Ⅱ)、Ni(Ⅱ)、Cu(Ⅱ)、Zn(Ⅱ)的红外光谱实验数据.对比二硫纶二甲基联吡啶金属配合物M(mnt)(dmbpy)和二硫纶邻菲咯啉金属配合物M(mnt)(phen)的红外光谱,分析了M(mnt)(bpy)的简正坐标,并结合热谱、电子光谱等性质研究了二氰基二硫纶和联吡啶与金属离子的配位方式 相似文献
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The title polymers PNiPzS4 and PCuPzS4 were synthesized by reaction of phthalonitrile and 2,3,5,6-tetracyano-1,4-dithiin with corresponding metal salt.Their structures and properties were characterized by associating the experimental results with MO and CI calculations of the dinier molecule as model polymer in the ZJNDO method.It has been found that the PNiPzS4 (or PCuPzS4) shows the semiconductivity at T<253 K (or 260 K) and T>278 K (or 286 K) and the conductivity increase with a hoist of temperature at 253 K (or 260 K)相似文献
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在非离子表面活性剂OP存在下,姜黄素能与蛋白质发生作用。研究表明,蛋白质与非离子表面活性剂OP可协同增强姜黄素的共振光散射强度,其增强程度与蛋白质的浓度在一定范围内呈良好的线性关系。在8×10-5mol.L-1姜黄素和3∶10 000的非离子表面活性剂OP存在下,该法测定牛血清白蛋白(BSA)和人血清白蛋白(HSA)的线性范围分别为0.001~10μg.mL-1和0.001~1μg.mL-1,检出限分别为0.23 ng.mL-1和0.89 ng.mL-1。方法已用于实际样品的测定,其结果令人满意。 相似文献
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