Dithiol-Dithione Tautomerism of 2,3-Pyrazinedithiol in the Synthesis of Copper and Silver Coordination Compounds.
Dithiol-Dithione Tautomerism of 2,3-Pyrazinedithiol in the Synthesis of Copper and Silver Coordination Compounds.
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2,3-吡嗪二硫醇的二硫醇-二硫酮互变异构在铜银配位化合物合成中的应用
DOI:
10.1021/acs.inorgchem.0c02203
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发表时间:
2020
影响因子:
4.6
通讯作者:
H. Krautscheid
中科院分区:
文献类型:
--
作者:
S. Henfling;R. Kempt;J. Klose;A. Kuc;B. Kersting;H. Krautscheid
A promising strategy for new electrically conductive coordination polymers is the combination of d10metal ions, which tolerate short metal···metal distances, with dithiolene linkers, known for their “non-innocent” redox behavior. This study explores the coordination chemistry of 2,3-pyrazinedithiol (H2pdt) toward Cu+and Ag+ions, highlighting similarities and differences. The synthetic approach, starting with the fully protonated ligand, allowed the isolation of a homoleptic bis(dithiolene) complex with formal CuIatoms, [Cu(H2pdt)2]Cl (1). This complex was further transformed to a 1D coordination polymer with short metal···metal distances,1D[Cu(Hpdt)] (2Cu). The larger Ag+ion directly built up a very similar coordination polymer,1D[Ag(Hpdt)] (2Ag), without any appearance of an intermediate metal complex. The coordination polymer1D[Cu(H2pdt)I] (4), like complex1, bears fully protonated H2pdt ligands in their dithione form. Upon heating, both compounds underwent auto-oxidation coupled with a dehydrogenation of the ligand to form the open-shell neutral copper(II) complex [Cu(Hpdt)2] (3) and the coordination polymer1D[Cu2I2(H2pdt)(Hpdt)] (5), respectively. For all presented compounds, crystal structures are discussed in-depth. Furthermore, properties of1,3, and those of the three 1D coordination polymers,2Ag,2Cu, and4, were investigated by UV–vis–NIR spectroscopy, cyclic voltammetry, and variable-temperature magnetic susceptibility, and direct current (dc)-conductivity measurements. The experimental results are compared and discussed with the aid of DFT simulations.
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DOI:
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发表时间:
1980
期刊:
影响因子:
--
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通讯作者:
E. Hoyer
DOI:
--
发表时间:
2016
期刊:
影响因子:
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影响因子:
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通讯作者:
C. S. Winter;S. Oliver;R. Manning;J. Rush;C. Hill;A. Underhill
影响因子:
4.6
作者:
Steven R. Kennedy;Morgan N Kozar;H. Yennawar;B. J. Lear
通讯作者:
B. J. Lear