当前位置: X-MOL 学术Acta Cryst. C › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Combining valproate and bipyridyl ligands to construct a 0D core-shell Zn5(μ3-OH)2 cluster and a 2D layered coordination network with a [Zn3(μ3-OH)]2 SBU.
Acta Crystallographica Section C ( IF 0.7 ) Pub Date : 2020-08-21 , DOI: 10.1107/s2053229620011262
Hijazi Abu Ali 1 , Mohanad Darawsheh 1
Affiliation  

Starting from the proposed zinc carboxylate cluster tetrakis(μ‐2‐propylpentanoato)dizinc(II), Zn22‐valp)4 (I), of valproic acid, a branched short‐chain fatty acid, and bipyridine ligands, two new mixed‐ligand coordination compounds, namely, bis(2,2′‐bipyridine)di‐μ3‐hydroxido‐hexakis(μ‐2‐propylpentanoato)bis(2‐propylpentanoato)pentazinc(II), [Zn5(C8H15O2)8(OH)2(C10H8N2)2] (II), and poly[[bis(μ‐4,4′‐bipyridine)di‐μ3‐hydroxido‐octakis(μ‐2‐propylpentanoato)bis(2‐propylpentanoato)hexazinc(II)] dimethylformamide disolvate], {[Zn6(C8H15O2)10(OH)2(C10H8N2)2]·2C3H7NO}n (III), were synthesized. Compound II is a core‐shell‐type zero‐dimensional discrete Zn53‐OH)2 metal–organic cluster with Zn ions in double‐triangle arrangements that share one Zn ion coincident with an inversion centre. The cluster contains three crystallographically non‐equivalent Zn ions exhibiting three different coordination geometries (tetrahedral, square pyramidal and octahedral). The cluster cores are well separated and embedded in a protective shell of the aliphatic branched short chains of valproate. As a result, there is no specific interaction between the discrete clusters. Conversely, compound III, a 2D layered coordination network with a secondary building unit (SBU), is formed by Zn63‐OH)2 clusters exhibiting a chair‐like hexagonal arrangement. This SBU is formed from two Zn33‐OH) trimers related by inversion symmetry and connected by two syn–anti bridging carboxylate groups. Each SBU is connected by four 4,4′‐bipyridine ligands producing a 63‐hcb net topology. 2D coordination layers are sandwiched within layers of dimethylformamide molecules that do not interact strongly with the network due to the hydrophobic protection provided by the valproate ligands.

中文翻译:

结合丙戊酸酯和联吡啶配体构建一个0D核-壳Zn5(μ3-OH)2簇和一个带有[Zn3(μ3-OH)] 2 SBU的二维分层配位网络。

从开始所提出的羧酸锌簇四(μ-2- propylpentanoato)dizinc(II),锌2(μ 2 -valp)4),丙戊酸,支链的短链脂肪酸,和联吡啶配位体,二新的混合配体配位化合物,即,双(2,2'-联吡啶)二μ 3 -hydroxido-六(μ-2- propylpentanoato)双(2- propylpentanoato)pentazinc(II),[锌5(C 8 H 15 O 28(OH)2(C 10 H 8 N 22 ](II)和聚[[bis(μ-4,4'-联吡啶)di-μ3-羟基八-(2--2-戊戊基)双(2-戊戊基)己二酸二锌] [{Zn 6(C 8 H 15 O 210(OH)2(C 10 H 8 N 22 ]·2C 3 H 7 NO} nIII)被合成。化合物II是核-壳型零维离散的Zn 5(μ 3 -OH)2具有双三角形排列的Zn离子的金属-有机团簇,其一个Zn离子与一个反转中心重合。该团簇包含三个晶体学上不等价的Zn离子,它们表现出三种不同的配位几何形状(四面体,方锥和八面体)。簇状核很好地分开并包埋在丙戊酸脂族支链短链的保护壳中。结果,离散簇之间没有特定的相互作用。相反,化合物III,一个二维层状协调网络与次级建筑物单元(SBU),是由锌形成6(μ 3 -OH)2簇显示出像椅子的六角形排列。该SBU由两个Zn 3(μ3 -OH)三聚体通过反对称对称相关,并通过两个顺反桥联的羧酸根基团连接。每个SBU通过四个4,4'-联吡啶配体连接,产生6 3 -hcb网络拓扑。2D配位层夹在由于丙戊酸酯配体提供的疏水保护而不会与网络强烈相互作用的二甲基甲酰胺分子层内。
更新日期:2020-08-21
down
wechat
bug