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首页> 外文期刊>Acta crystallographica. Section C, Structural chemistry. >Syntheses and structures of discrete copper(II) and cadmium(II) supramolecular complexes based on 1,4-diacylthiosemicarbazone ligands
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Syntheses and structures of discrete copper(II) and cadmium(II) supramolecular complexes based on 1,4-diacylthiosemicarbazone ligands

机译：基于1,4-二杆菌XocierAbazone配体的离散铜（II）和镉（II）和镉（II）的合成和结构

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摘要

Thiosemicarbazides and their metal complexes have attracted considerable interest because of their biological activities and their flexibility, which allows the ligands to bend and rotate freely to accommodate the coordination geometries of various metal centres. Discrete copper(II) and cadmium(II) complexes have been prepared by crystallization of N-[2-(2-hydroxybenzoyl)-hydrazinecarbonothioyl]propanamide (H3L) with Cu(CH3COO)2 or Cd(NO3)2 in a dimethylformamide/methanol mixed-solvent system at room temperature, affording the complexes di-/x-acetato-bis{/x4-l-[(2-oxidophenyl)carbonyl]-2-(propanamidomethanethioyl)hydrazine-1,2-diido}tetracopper(II) dimethylform-amide disolvate, [Cu4(C11H10N3O3S)2(C2H3O2)2]-2C3H7NO, (I), and bis{/x2-[(2-hydroxyphenyl)formamido](propanamidomethanethioyl)azanido}bis[(4,40-bipyri-dine)nitratocadmium(II)] dihydrate, [Cd2(CuH12N303S)2(N03)2(CioH8N2)2]-2H2O, (II). Complex (I) consists of four CuII cations, two /^-bridging trianionic ligands and two /^-bridging acetate ligands, while complex (II) is composed of two CdII cations, two /^-bridging monoanionic ligands, two nitrate ligands and two 4,40-bipyridine ligands. These discrete complexes are connected by hydrogen bonds and van der Waals interactions to form a three-dimensional supramolecular architecture. Compared with (I), the phenolic hydroxy group and hydrazide N atom of the thiosemicarbazide ligand of (II) are not involved in coordination and lead to a binuclear CdII complex. This different coordination mode may be attributed to the larger ionic radius of the CdII ion compared with the CuII ion.
机译：硫代吡吡吡啶及其金属综合体由于其生物活性及其柔性而引起了相当大的兴趣，这使得配体弯曲并自由旋转以适应各种金属中心的配位几何形状。通过在二甲基甲酰胺中的Cu（CH 3 COO）2或Cd（NO 3）2中，通过将N- [2-羟基苯甲酰基）-HYDRAZINALBOLIOOYL]丙酰胺（H3L）结晶来制备离散铜（II）和镉（II）复合物。/室温下甲醇混合溶剂系统，得到复合物DI-/ X-acetato-BIS {/ X4-L - [（2-氧化苯基）羰基] -2-（Pharanamidomethan乙酰苯甲酰基）肼-1,2-二极管}四瓣（ II）二甲基胺 - 酰胺脱落，[Cu 4（C11H10N3O3）2（C 2 H 3 O 2）2] -2C 3 H 7 O，（I）和BIS（羟基苯基）甲蛋白酶（Pharanamidomethanethioyl）BIS [（4,40 - 苯吡啶）硝基吡啶铵（II）]二水合物，[CD2（CUH12N303S）2（NO 3）2（COH8N2）2] -2H 2 O，（II）。复合物（i）由四个CuII阳离子，两个/螺纹桥接性状配体和两个/ ^ - 桥接醋酸酯配体组成，而复合物（II）由两种CdII阳离子，两个/ ^ - 桥接单醌配体，两个硝酸盐配体组成。两种4,40-吡啶配体。这些离散复合物通过氢键和范德瓦尔斯相互作用连接以形成三维超分子结构。与（I）相比，（ii）的硫代羟基肼配体的酚羟基和酰肼N原子不参与协调并导致生物核Cdii复合物。与Cuii离子相比，这种不同的协调模式可归因于CDII离子的较大离子半径。

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