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首页> 外文期刊>Polyhedron: The International Journal for Inorganic and Organometallic Chemistry >Role of inorganic and organic anions in the formation of metallosupramolecular assemblies of silver(I) coordination polymers with the twisted ligand bis(4-pyridylthio)methane
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Role of inorganic and organic anions in the formation of metallosupramolecular assemblies of silver(I) coordination polymers with the twisted ligand bis(4-pyridylthio)methane

机译:无机和有机阴离子在扭曲配体双(4-吡啶硫基)甲烷的银(I)配位聚合物的金属超分子组装中的作用

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摘要

Reaction of the twisted pyridyl dithioether ligand bis(4-pyridylthio)methane (4bpytm) with silver(l) salts afforded four complexes with 1:1 stoichiometries, namely [Ag(4bpytm)I(NO3) (1), [Ag(4bpytm)](C[04) (2) and [Ag(4bpytm)](ClO4) 1/2CH(2)Cl(2) 1/2dmf (2-Solv), [Ag(CH3COO)(4bpytm)]center dot H2O (3) and [Ag(CF3COO) (4bpytm)] (4). X-ray structural analysis of these complexes showed that one-dimensional structures are obtained for 1, 2-Solv and 4 whereas a two-dimensional network is formed in 3. The ligand 4bpytm acts as an N,N'-bis(monodentate) bridging system in all cases except in 3, where an unprecedented coordination mode is obtained with the ligand acting in a tridentate manner using its two pyridine nitrogen atoms and a sulfur atom. The coordination polymers are assembled through secondary contacts: Ag center dot center dot center dot Ag in 4, Ag center dot center dot center dot S in 1, 2-Solv and 4, Ag center dot center dot center dot O in 2-Solv, and hydrogen bonding interactions between crystallization water that join the polymeric layers in 3. All of these weak interactions link the low-dimensional complexes to give high-dimensional supramolecular structures and further stabilize the crystal structures in the solid state.
机译:扭曲的吡啶基二硫醚配体双(4-吡啶硫基)甲烷(4bpytm)与银(l)盐的反应提供了化学计量比为1:1的四种配合物,即[Ag(4bpytm)I(NO3)(1),[Ag(4bpytm )](C [04)(2)和[Ag(4bpytm)](ClO4)1 / 2CH(2)Cl(2)1 / 2dmf(2-Solv),[Ag(CH3COO)(4bpytm)]中心点H2O(3)和[Ag(CF3COO)(4bpytm)](4)。对这些配合物的X射线结构分析表明,在1、2和3中形成了一维结构,而在3中形成了二维网络。配体4bpytm充当N,N'-bis(单齿)除3以外的所有情况下的桥连系统,其中利用其两个吡啶氮原子和硫原子以三齿方式起作用的配体获得了空前的配位模式。配位聚合物通过次级触点组装:Ag中心点中心点中心点Ag在4中,Ag中心点中心点中心点S在1,2-Solv中和4,Ag中心点中心点中心点O在2-Solv中,与结晶水之间的氢键相互作用(在3中连接聚合物层)。所有这些弱相互作用都将低维络合物连接在一起,形成高维超分子结构,并使晶体结构进一步稳定在固态。

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