Synthesis and Characterization of Ca2(PO2NH)4•8H2O

被引：1

作者：

Sedlmaier, Stefan J. ^{[1
]}

Roemer, S. Rebecca ^{[1
]}

Schnick, Wolfgang ^{[1
]}

机构：

[1] Univ Munich, Dept Chem, D-81377 Munich, Germany

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 2011年 / 637卷 / 14-15期

关键词：

Tetrametaphosphimate; Crystal structure; Hydrogen bonding; Ring conformation; Solid-state NMR spectroscopy; RAY-POWDER DIFFRACTION; CRYSTAL-STRUCTURE;

D O I：

10.1002/zaac.201100309

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Ca2(PO2NH)4 center dot 8H2O was obtained as single-phase crystalline powder starting from aqueous solution of K4(PO2NH)4 center dot 4H2O and Ca(NO3)2 center dot 4H2O. A small fiber-like specimen has been used for single-crystal X-ray structure determination. In the structure of Ca2(PO2NH)4 center dot 8H2O (Pbcn (no. 60), a = 1700.6(3), b = 1069.3(2), c = 963.2(2) pm, Z = 4) there are (PO2NH)44 ions in saddle conformation which are interconnected by NH center dot center dot center dot O hydrogen bonds forming infinite columns running along [001]. These columns are hold together by a complex hydrogen bonding network with crystal water molecules involved. The FTIR spectrum of the title compound has been measured and the relevant bands were assigned. 31P solid-state NMR investigations yielded three resolved resonances with chemical shift values of 3.1, 4.9 and 7.9 ppm. DTA / TG data are also discussed.

引用

页码：2228 / 2232

页数：5

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