Preparation and characterization of the layered borophosphates M^II(H₂O)₂[B₂P₂O₈(OH)₂]·H₂O (M^II = Fe, Co, Ni)

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• 作者：Prashanth W. Menezes ; Stefan Hoffmann ; Yurii Prots ; Walter Schnelle ; Rü ; diger Kniep
• 关键词：Layered borophosphates ; Hydrothermal synthesis ; 6³ nets ; Re-dehydration
• 刊名：Inorganica Chimica Acta
• 出版年：2010
• 出版时间：10 December 2010
• 年：2010
• 卷：363
• 期：15
• 页码：4299-4306
• 全文大小：1056 K

文摘

The isotypic layered transition metal borophosphates M^II(H₂O)₂[B₂P₂O₈(OH)₂]·H₂O (M^II = Fe, Co, Ni) were prepared under hydrothermal conditions. Their crystal structures were determined by single-crystal X-ray diffraction data and revealed an isotypic relationship to Mg(H₂O)₂[B₂P₂O₈(OH)₂]·H₂O, a structure containing wavy 6³ nets formed by tetrahedral phosphate and hydrogenborate groups interconnected in an alternating fashion by sharing common apices. The crystalline compounds were also characterized by chemical analyses, scanning electron microscopy, energy dispersive X-ray analyses, thermal analyses, IR-spectroscopy and magnetic susceptibility measurements.