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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Syntheses, crystal structures and properties of the tetrametaphosphimates M-2(II)(PO2NH)(4) center dot 8 H2O with M-II = Mg, Mn, Co and Zn
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Syntheses, crystal structures and properties of the tetrametaphosphimates M-2(II)(PO2NH)(4) center dot 8 H2O with M-II = Mg, Mn, Co and Zn

机译：四甲基亚膦酸酯M-2（II）（PO2NH）（4）中心点8 H2O的合成，晶体结构和性质-M-II = Mg，Mn，Co和Zn

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Mg-2(PO2NH)(4) (.) 8 H2O (1), Mn-2(PO2NH)(4) (.) 8 H2O (2), Co-2(PO2NH)(4) (.) 8 H2O (3) and Zn-2(PO2NH)(4) (.) 8 H2O (4) were obtained as microcrystalline powders by combining aqueous solutions of K-4(PO2NH)(4) (.) 4 H2O and MX2 (.) y H2O (M = Mg, Mn, Co, Zn; X = Cl, NO3). Single crystals were obtained by crystallization in gelatine gels in U-tubes or test-tubes. 2 and 4 were characterized by thermogravimetry and 4 was additionally characterized by temperature dependend in situ powder diffractometry. The structures of 1, 2, 3 and 4 were found to be isotypic and were solved by single-crystal X-ray methods: P 2(1)/c, Z = 2 (1: a = 645.4(2), b = 1050.1(2), c = 1283.3(3) pm, beta = 104.66(3)degrees; 2: a = 648.7(2), b = 1063.1(2), c = 1310.8(3) pm, beta = 103.93(3)degrees; 3: a = 643.3(2), b = 1049.0(2), c = 1286.7(3) pm, beta = 104.28(3)degrees; 4: a = 644.18(5), b = 1049.22(7), c = 1282.43(8) pm, beta = 104.122(6)degrees). The structure is composed of MO6 octahedra and (PO2NH)(4)(4-) anions. The P4N4 rings of the (PO2NH)(4)(4-) anions exhibit a slightly distorted chair conformation, which is supported by IR data and has been described by torsion angles, Displacement Asymmetry Parameters and Puckering Parameters. Via M-2divided by ions and hydrogen bonds, the tetrametaphosphimate anions are connected forming layers perpendicular to [100]. These layers are connected by hydrogen bonds.
机译：Mg-2（PO2NH）（4）（。）8 H2O（1），Mn-2（PO2NH）（4）（。）8 H2O（2），Co-2（PO2NH）（4）（。）8 H2O （3）和Zn-2（PO2NH）（4）（。）8 H2O（4）通过合并K-4（PO2NH）（4）（。）4 H2O和MX2（。）的水溶液获得，为微晶粉末。 y H 2 O（M = Mg，Mn，Co，Zn; X = Cl，NO3）。通过在U型管或试管中的明胶凝胶中结晶获得单晶。通过热重分析法表征2和4，另外通过温度依赖性原位粉末衍射法表征4和4。发现1，2，3和4的结构是同型的，并通过单晶X射线方法求解：P 2（1）/ c，Z = 2（1：a = 645.4（2），b = 1050.1（2），c = 1283.3（3）pm，beta = 104.66（3）度; 2：2：a = 648.7（2），b = 1063.1（2），c = 1310.8（3）pm，beta = 103.93（3 ）度; 3：a = 643.3（2），b = 1049.0（2），c = 1286.7（3）pm，beta = 104.28（3）度; 4：a = 644.18（5），b = 1049.22（7） ，c = 1282.43（8）pm，β= 104.122（6）度）。该结构由MO6八面体和（PO2NH）（4）（4-）阴离子组成。 （PO2NH）（4）（4-）阴离子的P4N4环显示出轻微扭曲的椅构象，该构象受到IR数据的支持，并已通过扭转角，位移不对称参数和褶皱参数进行了描述。通过被离子和氢键分开的M-2，四甲基亚磷酸酯阴离子连接形成垂直于[100]的层。这些层通过氢键连接。

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