A series of related 2D coordination polymers based on [copper(II)-4,4¡ä-bpy-carboxylato] building blocks
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- 作者：Pongthipun Phuengphai ; Sujittra Youngme ; Ilpo Mutikainen ; Patrick Gamez ; Jan Reedijk
- 关键词：Porous Coordination Polymers ; Heterogeneous catalysts
- 刊名：Polyhedron
- 出版年：2012
- 出版时间：25 July, 2012
- 年：2012
- 卷：42
- 期：1
- 页码：10-17
- 全文大小：1400 K
文摘
Different combinations of three building blocks, namely the coordination moiety [copper(II)-4,4¡ä-bpy], a carboxylato co-ligand (formato or acetato) and an anion (ClO4?, NO3? or PF6?), lead to the formation of the three compounds, namely {[Cu3(4,4¡ä-bpy)3(¦Ì-OOCH)4(H2O)2](ClO4)2(H2O)6}n (1), {[Cu(4,4¡ä-bpy)(¦Ì-OOCH)(NO3)]}n (2) and {[Cu2(4,4¡ä-bpy)2(¦Ì-OOCCH3)3](PF6)(H2O)}n (3). The molecular structures determined by single-crystal X-ray diffraction reveal notable (4,4) topology, regardless of the different monocarboxylato groups (formato for 1 and 2 and acetato for 3) and anions. Compound 1, synthesized from Cu(II), 4,4¡ä-bpy, ClO4? and formate as co-ligand, exhibits a 2D coordination network based on trinuclear chain secondary building units. With coordinating NO3? anions (instead of non-coordinating ClO4?), a distinct structural motif, i.e. a 2D framework assembled from dinuclear chain secondary building units, is obtained (compound 2). The replacement of the formate ligands by acetate units in compound 3, gives rise to a 2D framework which is assembled from tetranuclear chain secondary building units. The three new coordination compounds have been characterized and tested for their catalytic properties. All compounds show catalytic activities for the selective cyanosilylation of aldehydes.