Incorporating distinct metal clusters to construct diversity of 3D pillared-layer lanthanide-transition-metal frameworks.
Incorporating distinct metal clusters to construct diversity of 3D pillared-layer lanthanide-transition-metal frameworks.
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DOI：
10.1021/ic800221j
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发表时间：
2008-05
影响因子：
4.6
通讯作者：
Jian-Wen Cheng;Shoutian Zheng;Guo‐Yu Yang
中科院分区：
文献类型：
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作者：
Jian-Wen Cheng;Shoutian Zheng;Guo‐Yu Yang
三种新型三维柱撑层镧系-过渡金属异质材料（杂-Ln-TM）化合物，即Ln_2Cu_7I_6（ina）_7（H_2 O）_6·H_2 O [ina=异烟酸; Ln=Ce（1），Sm（2）]和Er_4（OH）_4Cu_5I_4（ina）_6（na）（2，5-pdc）·0.3H_2 O（3; Na=烟酸，2，5-PDC= 2，5-吡啶二羧酸），通过在水热条件下引入不同的金属簇作为结构单元而获得。化合物1和2是同构的，并且由基于[Cu 3 I3]和[Cu 4 I3]+簇的二聚[Ln 2（ina）6]核和无机2D [Cu 8I 7]nn+层的两个不同的构建单元组成。化合物3由十核[Cu 10 I8]2+簇和无机1D [Er 4（OH）4] n8 n+簇链基层构成，其代表通过1D [Er 4（OH）4] n8 n+簇聚合物和过渡金属簇的两种不同类型的金属簇单元的组合构成的3D杂-Ln-TM的第一个实例。有趣的是，在水热条件下，邻位发生脱羧反应，2，5-pdc 2-部分转化为na-。化合物1-3代表了使用不同金属簇单元构建迷人的3D异质-Ln-TM框架的良好实例。
Three novel 3D pillared-layer heterometallic lanthanide-transition-metal (hetero-Ln-TM) compounds, namely, Ln2Cu7I6(ina)7(H2O)6.H2O [ina=isonicotinic acid; Ln=Ce (1), Sm (2)] and Er4(OH)4Cu5I4(ina)6(na)(2,5-pdc).0.3H2O (3; na=nicotinic acid, 2,5-pdc=2,5-pyridinedicarboxylic acid), have been obtained by incorporating different metal clusters as building blocks under hydrothermal conditions. Compounds 1 and 2 are isostructural and consist of two distinct building units of dimeric [Ln2(ina)6] cores and inorganic 2D [Cu8I7]nn+ layers based on the [Cu3I3] and [Cu4I3]+ clusters. Compound 3 is constructed from decanuclear [Cu10I8]2+ clusters and inorganic 1D [Er4(OH)4]n8n+ cluster chain-based layers, which represent the first example of a 3D hetero-Ln-TM constructed by the combination of two distinct types of metal cluster units of a 1D [Er4(OH)4]n8n+ cluster polymer and a transition-metal cluster. It is interesting that decarboxylation occurred in the ortho position and 2,5-pdc2- was partially transformed into na- under hydrothermal conditions. Compounds 1-3 represent good examples of using different metal cluster units to construct fascinating 3D hetero-Ln-TM frameworks.