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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Experimental and theoretical studies on the coordination chemistry of the N~1-hexyl substituted pyrimidines (uracil, 5-fluorouracil and cytosine)
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Experimental and theoretical studies on the coordination chemistry of the N~1-hexyl substituted pyrimidines (uracil, 5-fluorouracil and cytosine)

机译:N〜1-己基取代的嘧啶(尿嘧啶,5-氟尿嘧啶和胞嘧啶)配位化学的实验和理论研究

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摘要

N~1-Hexyl substituted pyrimidines were shown to present solubility properties closer to the real bases than the commonly used methyl and ethyl derivatives, yielding bi-layered structures in the solid state. The study of their coordination capabilities, mainly with Ag(i) and Hg(ii), is presented in order to prove their reactivity. A series of coordination complexes, namely, [Hg(N~1-hexyl-5-fluorouracilate)_2]_4· 6H_2O (1), (Ag~+)·[Ag(N~1-hexyl-5- fluorouracilate)2]- (2), [Ag(NO_3)(N~1-hexyluracil-κO~4)_4] (3), [ZnBr_2(N~1-hexylcytosine)_2] (4), [CdBr_2(N~1-hexylcytosine)_2] (5), [HgBr_2(N~1-hexylcytosine)_2] (6) and [CoBr_2(N~1-hexylcytosine)_2] (7), have been synthesized in good yields and X-ray characterized. The presence of the hexyl chains and the fluorine atoms causes the formation of interesting 3D architectures in the solid state. Their structures have been further characterized by infrared spectra (IR) and elemental analyses. In addition, DFT-D3 calculations are used to study interesting noncovalent interactions observed in the solid state, like fluorine-fluorine, fluorine-π and hydrophobic interactions.
机译:N〜1-己基取代的嘧啶显示出比常用的甲基和乙基衍生物更接近真实碱的溶解性,从而产生固态的双层结构。为了证明它们的反应性,对它们的配合能力进行了研究,主要是与Ag(i)和Hg(ii)的配合。一系列的配合物,即[Hg(N〜1-己基-5-氟尿嘧啶)_2] _4·6H_2O(1),(Ag〜+)·[Ag(N〜1-己基-5-氟尿嘧啶-5)2 ]-(2),[Ag(NO_3)(N〜1-己基尿嘧啶-κO〜4)_4](3),[ZnBr_2(N〜1-己基胞嘧啶)_2](4),[CdBr_2(N〜1-已合成[HgBr_2(N〜1-己基胞嘧啶)_2](5),[HgBr_2(N〜1-己基胞嘧啶)_2](6)和[CoBr_2(N〜1-己基胞嘧啶)_2](7),并进行了X射线表征。己基链和氟原子的存在导致形成有趣的固态3D结构。其结构已通过红外光谱(IR)和元素分析进一步表征。另外,DFT-D3计算用于研究在固态下观察到的有趣的非共价相互作用,例如氟-氟,氟-π和疏水性相互作用。

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