Synthesis, characterization, and properties of organically templated lanthanide oxalatophosphates with a three-dimensional honeycomb structure: (H4APPIP)[Ln3(C2O4) 5.5(H2PO2)2] 5H2O (Ln = Er - Lu, APPIA = 1,4-bis(3-aminopropyl)piperazine)

Chih Min Wang, Yi Ying Wu, Chia Hung Hou, Chii Chang Chen, Kwang Hwa Lii

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Four isostructural organically templated lanthanide oxalatophosphates, (H4APPIP) [Ln3(C2O4)5.5 (H2PO4)2] 5H2O (Ln = Er - Lu and APPIP = 1,4-bis(3-aminopropyl)piperazine), have been synthesized under hydrothermal conditions and characterized by single-crystal and powder X-ray diffraction. Their structures contain LnO8 trigonal dodecahedra linked by three bis-bidentate oxalates to form layers in the (102) plane, which are connected by dihydrogen phosphate and bis-monodentate oxalate ligands to form a 3D framework. The charge-compensating tetraprotonated 1,4-bis-(3-aminopropyl)piperazinium cations and lattice water molecules are located in the 12-membered ring straight channels. They are the first examples of organically templated lanthanide oxalatophosphates. The thermal stability, guest desorption-sorption properties, variable-temperature in situ powder X-ray diffraction, magnetic susceptibility, and photoluminescence spectrum of the Er compound and catalytic activity of the Yb compound for the Biginelli reaction have also been studied.

Original languageEnglish
Pages (from-to)1519-1523
Number of pages5
JournalInorganic Chemistry
Volume48
Issue number4
DOIs
StatePublished - 16 Feb 2009

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