Structure of Tetrakis(melaminium) Bis(dihydrogenphosphate) Monohydrogenphosphate Trihydrate from X-ray Powder Diffraction and Solid-State NMR Spectroscopy

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• 作者：Vladimir Brodski ; René ; Peschar ; Henk SchenkAndreas Brinkmann ; Ernst R. H. van Eck ; Arno P. M. Kentgens
• 刊名：Journal of Physical Chemistry C
• 出版年：2008
• 出版时间：August 14, 2008
• 年：2008
• 卷：112
• 期：32
• 页码：12515-12523
• 全文大小：507K
• 年卷期：v.112,no.32(August 14, 2008)
• ISSN：1932-7455

文摘

The crystal structure of the melamine phosphate salt tetrakis(melaminium) bis(dihydrogenphosphate) monohydrogenphosphate trihydrate with as much as ten independent moieties in the unit cell was determined by a direct-space global optimization technique from X-ray powder diffraction data using additional geometry constraints obtained by ³¹P double-quantum solid-state NMR spectroscopy. The structure analysis of the compound and its comparison with other melamine phosphates reveals the packing and bonding characteristics that are important for melamine-phosphate salts with a melamine-to-phosphor ratio larger than one, which are promising environmental-friendly flame retardants.