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首页> 外文期刊>Polyhedron: The International Journal for Inorganic and Organometallic Chemistry >Unusual coordination in a silver thionate complex. Synthesis, structural characterization and theoretical calculations of dinuclear and polynuclear silver(I) thiosaccharinates with pyridine and 1,10-phenanthroline
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Unusual coordination in a silver thionate complex. Synthesis, structural characterization and theoretical calculations of dinuclear and polynuclear silver(I) thiosaccharinates with pyridine and 1,10-phenanthroline

机译：硫氰酸银络合物中异常的配位。吡啶和1,10-菲咯啉双核和多核硫糖精银（I）的合成，结构表征和理论计算

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摘要

Treatment of Ag-6(tsac)(6) (tsac=thiosaccharinate anion) with pyridine (py) and 1,10-phenanthroline (o-phen) each affords two novel silver(1)-thiosaccharinate complexes: dinuclear [Ag-2(tsac)(2)py] (1) and polynuclear [Ag(tsac)(o-phen)](n) (2). Both crystal structures have been determined by X-ray diffraction and spectroscopic structural analysis (IR and Raman, UV-Vis, H-1 and C-13 NMR) have also been made for both compounds. Thermal stability analysis (TGA and DTA) of complex 1 are used to confirm the strength of the pyridine coordination to the silver ion. The molecular structure of complex 1 shows some astonishing characteristics. The two silver atoms are in different environments: one of them is surrounded by two S atoms, while the other completes its coordination sphere by three N atoms, two from the thiosaccharinate anions and the third from a pyridine molecule. The short Ag(1)-Ag(2) contact distance, 2.9681(8) angstrom, indicates an interaction between the two silver metal atoms exists. Complex 2 shows a thiosaccharinate molecule bridging two silver atoms through the exocyclic S atom while the o-phenanthroline ligand is coordinated as a bidentate N,N chelate, forming a polynuclear chain. Quantum chemical calculations confirm the argentophilic character of the Ag-Ag interaction in complex 1, and its structure and vibrational assignments were correlated and confirmed theoretically. (C) 2008 Elsevier Ltd. All rights reserved.
机译：用吡啶（py）和1,10-菲咯啉（o-phen）处理Ag-6（tsac）（6）（tsac = thiosaccharinate阴离子）各自提供两种新型的（1）-thiosaccharinate银配合物：双核[Ag-2 （tsac）（2）py]（1）和多核[Ag（tsac）（o-phen）]（n）（2）。两种晶体结构均已通过X射线衍射测定，并且两种化合物的光谱结构分析（IR和拉曼光谱，UV-Vis，H-1和C-13 NMR）也已完成。配合物1的热稳定性分析（TGA和DTA）用于确认吡啶与银离子的配位强度。配合物1的分子结构显示出一些惊人的特征。这两个银原子处于不同的环境中：其中一个被两个S原子包围，而另一个则由三个N原子完成其配位球，两个来自硫代糖酸盐阴离子，另一个来自吡啶分子。 Ag（1）-Ag（2）的短接触距离为2.9681（8）埃，表明两个银金属原子之间存在相互作用。配合物2显示硫代糖精分子，其通过环外S原子桥接两个银原子，而邻菲咯啉配体配位为双齿N，N螯合物，形成多核链。量子化学计算证实了复合物1中Ag-Ag相互作用的亲银特性，并且其结构和振动分配相关并在理论上得到了证实。 （C）2008 Elsevier Ltd.保留所有权利。

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