3D lanthanide-transition-metal–organic frameworks constructed by two distinct tetranuclear units of cubane {Ln4} and chair-like {Cu4} clusters
2008; Royal Society of Chemistry; Volume: 10; Issue: 8 Linguagem: Inglês
10.1039/b718902h
ISSN1466-8033
AutoresJian‐Wen Cheng, Shou‐Tian Zheng, Wei Liu, Guo‐Yu Yang,
Tópico(s)Lanthanide and Transition Metal Complexes
ResumoThree novel lanthanide(III)–copper(I) heterometallic coordination polymers, Ln2Cu2I2(OH)2(pca)2(na)2 (Ln = Y1, Er 2, Yb3; pca = 2-pyrazinecarboxylic acid, na = nicotinic acid), have been synthesized under hydrothermal reactions. X-Ray crystal structure analyses reveal that 1–3 are isomorphous and crystallize in the monoclinic space groupC2/c. Both compounds are constructed from two distinct secondary building units (SBUs) of cubane {Ln4} and chair-like {Cu4} clusters, and result in 3D hetero-Ln-TM frameworks with an unusual binodal net, which provides a good example for the construction of fascinating hetero-Ln-TM network by combining different types of metal clusters. Furthermore, the IR, TGA, PXRD, UV-vis spectra of 1–3 were also studied.
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