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首页> 外文期刊>Bulletin of the Chemical Society of Japan >Syntheses and Crystal Structures of Methyl 2-Pyridylmethylidenehydrazinecarbodithioate and of Its Copper(II) Complex: Supramolecular Arrays Exhibiting pseudo-Helical Arrangement Controlled by Hydrogen Bonding or S...S Contact
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Syntheses and Crystal Structures of Methyl 2-Pyridylmethylidenehydrazinecarbodithioate and of Its Copper(II) Complex: Supramolecular Arrays Exhibiting pseudo-Helical Arrangement Controlled by Hydrogen Bonding or S...S Contact

机译：2-吡啶基甲基亚甲基肼碳二硫代甲酯及其铜（II）配合物的合成和晶体结构：超分子阵列表现出受氢键或S ... S接触控制的伪螺旋排列

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摘要

A copper(II) complex of the Schiff base methyl 2-pyridylmethylidenehydrazinecarbodithioate (HNNS), derived from 2-pyridinecarbaldehyde and methyl hydrazinecarbodithioate, was synthesized and characterized by elemental analyses, IR, UV-vis spectra and cyclic voltammetric measurements. X-Ray diffraction studies showed that the ligand HNNS (1) crystallizes in the orthorhombic space group Pna2_1, with a = 17.611(2), b = 9.208(1) A; v = 1015.1(2) A~3, Z = 4, final R = 0.03 for 1169 independent reflections. Complex [Cu(NNS)_2] (2) crystallizes in monoclinic space group P2_1/c, with a = 11.898(2), b = 9.798(2), c = 18.091(4) A; #beta# = 103.18(3) deg, V = 2053.4(7) A~3, Z = 4, final R = 0.0505 for 3460 observed reflections. Intermolecular interactions play important roles in the overall packing of the molecules in the crystal lattice. In 1, an extended one-dimensional helical chain is formed via hydrogen bondings (N...N 2.971 A), while S...S contacts (3.485 A) assemble the helical chains in 2. The assembly process of 2 is enantioselective, since the complex assumes either the #DELTA# or #LAMBDA# enantiomorph due to the mer-configuration of the unsymmetrical tridentate Schiff base, and the triangle open isomer aggregates only with the #DELTA# isomer and the #LAMBDA# only with #LAMBDA# to give helical structures described as (#DELTA#)(#DELTA#)(#DELTA#)(#DELTA#)... and (#LAMBDA#) (#LAMBDA#) (#LAMBDA#) (#LAMBDA#)..., respectively.
机译：合成了由2-吡啶基甲醛和肼基碳二硫代酸甲酯衍生的席夫碱2-吡啶基甲基亚甲基肼基碳二硫代硫酸盐（HNNS）的铜（II）配合物，并通过元素分析，IR，UV-可见光谱和循环伏安法测量进行了表征。 X射线衍射研究表明，配体HNNS（1）在正交空间群Pna2_1中结晶，a = 17.611（2），b = 9.208（1）A; v = 1015.1（2）A〜3，Z = 4，对于1169个独立反射，最终R = 0.03。络合物[Cu（NNS）_2]（2）在单斜空间群P2_1 / c中结晶，其中a = 11.898（2），b = 9.798（2），c = 18.091（4）A; ＃beta＃= 103.18（3）度，V = 2053.4（7）A〜3，Z = 4，对于3460次观察到的反射，最终R = 0.0505。分子间相互作用在分子在晶格中的整体堆积中起重要作用。在1中，通过氢键（N ... N 2.971 A）形成了延伸的一维螺旋链，而S ... S触头（3.485 A）在2中组装了螺旋链。2的组装过程是对映选择性的，由于非对称三齿席夫碱的mer-构型，复合物假定为＃DELTA＃或＃LAMBDA＃对映体，并且三角形开放异构体仅与＃DELTA＃异构体聚集，而＃LAMBDA＃仅与#LAMBDA聚集＃给出描述为（#DELTA＃）（＃DELTA＃）（＃DELTA＃）（＃DELTA＃）...和（＃LAMBDA＃）（＃LAMBDA＃）（＃LAMBDA＃）（＃LAMBDA＃ ）...， 分别。

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