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首页> 外文期刊>Crystal growth & design >Multi-Uracil Arrays Built on Organostannoxane, Organotelluroxane, and Copper(II) Carboxylate Platforms. C-H???O Interactions Leading to Tetrameric Uracil Motifs
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Multi-Uracil Arrays Built on Organostannoxane, Organotelluroxane, and Copper(II) Carboxylate Platforms. C-H???O Interactions Leading to Tetrameric Uracil Motifs

机译:基于有机锡氧烷,有机碲氧烷和羧酸铜(II)平台构建的多尿嘧啶阵列。 C-H ??? O相互作用导致四聚尿嘧啶基序

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摘要

The reaction of 3-(N1-uracyl)propanoic acid (LH) with (t-Bu_2SnO)_3 in a 3:1 ratio afforded the hydroxidebridged dimer [t-Bu_2Sn(μ-OH)L]_2 (1). A similar reaction involving bis(tri-n-butyltin)oxide, (n-Bu_3Sn)_2O, in a 2:1 ratio afforded the one-dimensional (1D) coordination polymer [(n-Bu_3SnL)]_n (2). Similarly, the reaction of LH with (MeOAr)_2TeO in a 2:1 ratio afforded the mononuclear [(MeOAr)_2TeL_2]?H_2O (3). On the other hand, a similar reaction in a 1:1 ratio gave the dinuclear product [{(MeOAr)_2TeL}_2O]?C_2H_5OH?CH_3OH? H_2O (4). The reaction of complex 1 with CuCl_2 in a 1:1 ratio yielded [Cu(II)L_2H_2O]_2?6H_2O (5). All the complexes show an extensive supramolecular organization in the solid state as a result of several intermolecular interactions. The role of uracil substituents in determining the final course of the supramolecular assembly is discussed. A tetrameric uracil supramolecular motif is formed in the crystal structure of complex 1 as a result of C-H???O interactions. Uracil-water interactions involving only C-H???O interactions have been observed in complex 5.
机译:3-(N1-尿酰基)丙酸(LH)与(t-Bu_2SnO)_3以3:1的比例反应,制得了氢氧化物桥联的二聚体[t-Bu_2Sn(μ-OH)L] _2(1)。涉及以2:1的比例包含双(三正丁基锡)氧化物(n-Bu_3Sn)_2O的类似反应,得到一维(1D)配位聚合物[(n-Bu_3SnL)] _ n(2)。同样,LH与(MeOAr)_2TeO以2:1的比例反应得到单核[[MeOAr)_2TeL_2]?H_2O(3)。另一方面,以1∶1的比例进行类似的反应,得到双核产物[{((MeOAr)_2TeL} _2O]?C_2H_5OH?CH_3OH?。 H_2O(4)。配合物1与CuCl_2以1:1的比例反应生成[Cu(II)L_2H_2O] _2→6H_2O(5)。由于多种分子间相互作用,所有复合物在固态下均显示出广泛的超分子组织。讨论了尿嘧啶取代基在决定超分子组装的最终过程中的作用。由于C-H 2 O相互作用,在配合物1的晶体结构中形成了四聚尿嘧啶超分子基序。在配合物5中观察到尿嘧啶-水相互作用仅涉及C-H ??? O相互作用。

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