Hydrothermal Synthesis and Properties of Open-Framework Mixed-valence Iron Phosphates FeIII2FeII1.5(PO4)3 with Three-dimensional Structure

• 来源期刊: 中国化学（英文版）
• 学科: 化学
• 年，卷（期）: 2004,（1）
• 页码范围: 55-59
• 页数: 5页
• 分类号: O6
• 语种: 英文

摘要

The open-framework iron phosphate FeIII2FeII1.5(PO4)3 was hydrothermally synthesized and characterized by elemental analysis, IR, EPR, XPS and single crystal X-ray diffraction analysis. The title compound crystallized in the triclinic, space group P1 with a＝0.64724(4) nm, b＝0.79651(6) nm, c＝0.94229(5) nm, α＝104.447(2)°, β＝108.919(4)°, γ＝101.741(4)°, V＝0.42302(5) nm3, Z＝1 and R1 (wR2)＝0.0307 (0.0793). Crystal data were collected on a Rigaku R-AXIS RAPID IP diffractometer with Mo Kα (λ＝0.071073 nm) at 293(2) K in the range of 2.43°＜θ＜27.46°. The structure of 1 consists of 19 non-hydrogen atoms including three and a half crystallographically independent Fe and three P atoms. Fe(1) connects its symmetrical Fe(1A) through bridging oxygen forming a dimer and the dimers are connected by Fe(4) forming an infinite staircase-like chain. Fe(2) and Fe(3) connect the infinite chains into a layer with bridging oxygen. Layers are interconnected via Fe(4) forming the six-membered and eight-membered channel systems.