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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Anion effects on the formation of silver(I) complexes with the flexible ligand 4,4′-Bis(1,2,4-triazol-1-ylmethyl)biphenyl
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Anion effects on the formation of silver(I) complexes with the flexible ligand 4,4′-Bis(1,2,4-triazol-1-ylmethyl)biphenyl

机译:阴离子对柔性配体4,4'-双(1,2,4-三唑-1-基甲基)联苯的银(I)配合物形成的影响

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摘要

The reaction of 4,4′-bis(1,2,4-triazol-1-ylmethyl)biphenyl (btmb) with silver(I) salts of BF4-, NO3- and N3- led to the formation of four new silver(I) coordination polymers {[Ag(btmb)]BF4}n (1), {[Ag 2(btmb)3](NO3)2(H2O) 5}n (2), [Ag2(btmb)(N3) 2]n (3), and [Ag(btmb)(N3)]n (4). Their coordination number varies from 2 (in 1) to 3 (in 2), 4 (in 3), and 5 (in 4). Different from the single chain structure of 1, complex 2 displays a 1D ladder-like double chain framework, whereas complex 3 exhibits a 2D layered architecture. Complex 4 has the same anion as complex 3 but shows a different metal-to-ligand ratio and a 1D double-zigzag chain structure. Both 3 and 4 have Ag?Ag argentophilic interactions. The ligand btmb adopts both cis or trans configuration in the studied complexes. A trans- or cis-btmb ligand link silver ions with Ag?Ag distances of ≈18 and 13 ?, respectively. BF4- and NO3- are non-coordinating anions in 1 and 2. N3- is the bridging anion in 3 (1,3-bridging fashion) and 4 (1,1-bridging fashion). These findings suggest that the coordination numbers around the AgI ion correlate to the coordination abilities of anions and the btmb to silver ratio. In addition, the influence of anions on thermal stability were also investigated. This work is a good example that nicely supports the less explored field of anion-dependent structures of complexes with non-pyridyl ligands.
机译:4,4'-双(1,2,4-三唑-1-基甲基)联苯(btmb)与BF4-,NO3-和N3-的银(I)盐的反应导致形成四个新的I)配位聚合物{[Ag(btmb)] BF4} n(1),{[Ag 2(btmb)3](NO3)2(H2O)5} n(2),[Ag2(btmb)(N3)2 ] n(3)和[Ag(btmb)(N3)] n(4)。它们的协调数从2(合1)到3(合2),4(合3)和5(合4)不等。与1的单链结构不同,复​​合物2显示1D梯形双链框架,而复合物3显示2D分层结构。配合物4具有与配合物3相同的阴离子,但是显示出不同的金属与配体比率和一维双Z字形链结构。 3和4都具有Ag?Ag亲银性相互作用。在所研究的复合物中,配体btmb采用顺式或反式构型。反式或顺式-btmb配体连接银离子的Ag?Ag距离分别约为≈18和13?。 BF4-和NO3-是1和2中的非配位阴离子。N3-是3(1,3-桥接)和4(1,1-桥接)的桥连阴离子。这些发现表明,AgI离子周围的配位数与阴离子的配位能力以及btmb与银的比例有关。此外,还研究了阴离子对热稳定性的影响。这项工作是一个很好的例子,很好地支持了非吡啶基配体配合物的阴离子依赖性结构的较少探索领域。

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