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Journal of Structural Chemistry - 相似文献
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Bei‐Sheng Kang Ye‐Xiang Tong Kai‐Bei Yu Cheng‐Yong Su Hua‐Xin Zhang 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(1):40-41
The title compound, potassium bis(ethylenediamine‐N,N′)copper(II) hexacyanoferrate(III), K[Cu(C2H8N2)2]‐[Fe(CN)6], contains [Cu(en)2]2+ and [Fe(CN)6]3? complex ions, where en is ethylenediamine. The FeIII and K+ ions lie on twofold axes and the CuII atom lies on an inversion center. The [Cu(en)2]2+ ion has square‐planar coordination with a mean Cu—N distance of 1.992 (2) Å and the [Fe(CN)6]3? ion has distorted octahedral coordination with a mean Fe—C distance of 1.947 (2) Å. 相似文献
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T. F. Sysoeva Z. A. Starikova M. V. Leont'eva N. M. Dyatlova 《Journal of Structural Chemistry》1991,31(5):814-817
All-Union Research Institute for Chemical Reagents and High-Purity Chemicals. Translated from Zhurnal Strukturnoi Khimii, Vol. 31, No. 5, pp. 140–143, September–October, 1990. 相似文献
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Guo-Dong Liu Jian-Pei Liao Yu-Zhi Fang Sha-Sheng Huang Guo-Li Sheng Ru-Qin Yu 《Analytical sciences》2002,18(4):391-395
The fluorescence spectral characteristics and interaction of bis(ethylene)tin(bis(salicylidene)ethylenediamine) [Et2Sn(salen)] with DNA are described. The polarity of the solvent has a strong effect on the fluorescence characteristics of Et2Sn(salen). Et2Sn(salen) bound to DNA showed a marked decrease in the fluorescence intensity with a bathochromic shift of the excitation and emission peaks. A hypochromism in the UV absorption spectra was also observed. KI quenching and competitive binding to DNA between Et2Sn(salen) and ethidium bromide (EB) were studied in connection with other experimental observations to show that the interactive model between Et2Sn(salen) and DNA is an intercalative one. The pH and salt effect on the fluorescence properties was also investigated. The intrinsic binding constant was estimated to be 1.071 x 10(5) mol L(-1) in base pairs and the binding site number is 1.98, respectively. A linear relationship between F/F0 and the concentration of calf thymus DNA covers 5.1 x 10(-6) - 2.41 x 10(-4) mol L(-1), which can be utilized for determining traces of calf thymus DNA with a detection limit of 1.1 x 10(-7) mol L(-1) in base pairs. 相似文献