MIXED INORGANIC-ORGANIC ANION FRAMEWORKS: SYNTHESIS AND CRYSTAL STRUCTURE OF Fe4(PO4)2(C2O4)(H2O)2

摘要

A novel inorganic-organic framework material has been prepared hydrothermally in the iron(II)-phosphate-oxalate system. Fe4(PO4)2(C2O4)(H2O)2 crystallizes in space group P21, a=7.974(3) angstroms, b=4.817(3) angstroms, c=14.169(3) angstroms, beta=94.70(3), V=542.4(4) angstroms3, Z=2, finalR, Rw=0.023, 0.025 for 817 observed data (I->3 sigma(I)). The structure consists of sheets of interconnected FeO6, FeO5, and PO4 polyhedra in the ab plane, which are bridged via C2O2-4 groups along the c-axis to form an infinite 3-D network enclosing small cavities into which terminal FeOH2 groups protrude. 23 refs.