Synthesis and Crystal Structure of a New Representative of the Family of Aqueous Diphosphates: (NH4)2[MG3(P2O7)2(H2O)2]

被引：0

作者：

Evdokimov, A. I. ^{[1
,2
]}

Antipin, A. M. ^{[2
]}

Gurbanova, O. A. ^{[1
]}

Volkov, A. S. ^{[1
]}

Dimitrova, O. V. ^{[1
]}

机构：

[1] Lomonosov Moscow State Univ, Moscow, Russia

[2] Russian Acad Sci, Shubnikov Inst Crystallog, Fed Sci Res Ctr Crystallog & Photon, Moscow 119333, Russia

来源：

CRYSTALLOGRAPHY REPORTS | 2022年 / 67卷 / 04期

关键词：

PYROPHOSPHATE; PHOSPHATE; SPECTRA;

D O I：

10.1134/S1063774522040071

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Single crystals of new compound (NH4)(2)[Mg-3(P2O7)(2)(H2O)(2)], belonging to the set of aqueous diphosphates with the general formula A(2)M(3)[P2O7](2)(H2O)(2), where A = K, NH4, Rb, Na, M = Mn, Fe, Co, Ni, have been obtained for the first time by hydrothermal synthesis at T = 553 K and P = 7 MPa. The new compound has unit-cell parameters a = 9.3047(2) angstrom, b = 8.0843(2) angstrom, c = 9.3655(3) angstrom, beta = 100.225(1)degrees. The crystal structure model has been determined within the sp. gr. P2(1)/c with an accuracy up to R = 0.0235. Raman spectra have been obtained for compounds of this structural type for the first time, and the incorporation of water molecule into the (NH4)(2)[Mg-3(P2O7)(2)(H2O)(2)] structure and formation of complex phosphate groups P2O7 is confirmed.

引用

页码：530 / 537

页数：8

共 21 条

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