层状钼酸盐NH4Co2OH(MoO4)2⋅H2O的合成与晶体结构

IF 0.3 4区材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Powder Diffraction Pub Date : 2023-09-28 DOI:10.1017/s0885715623000350

Paweł Adamski, Aleksander Albrecht, Dariusz Moszyński

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引用次数: 0

摘要

以硝酸钴和七钼酸铵水溶液为原料，在pH = 7.5的条件下进行沉淀，得到了一种新的化合物nh4 Co 2 OH(moo4) 2⋅H 2o。通过x射线粉末衍射(XRPD)和Rietveld细化鉴定，该晶体结构为已知的层状钼酸盐(Φ y)多晶型，通式为AT 2 OH(MoO 4) 2⋅H 2 O (a = NH 4 +， Na +， K +， T = Zn 2+， Co 2+， Cu 2+， Ni 2+)，并基于该结构建立了模型。晶格参数细化为R- 3空间群(148)a = 6.1014(2) Å， b = 6.1014(2) Å， c = 21.826(1) Å， α = 90°，β = 90°，γ = 120°。

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Synthesis and crystal structure of layered molybdate NH₄Co₂OH(MoO₄)₂⋅H₂O

A new compound NH 4 Co 2 OH(MoO 4 ) 2 ⋅H 2 O was prepared by precipitation of aqueous solutions of cobalt nitrate and ammonium heptamolybdate at pH = 7.5. The crystal structure was identified by X-ray powder diffraction (XRPD) and Rietveld refinement as a known polymorph of layered molybdates (Φ y ) with general formula AT 2 OH(MoO 4 ) 2 ⋅H 2 O ( A = NH 4 + , Na + , K + and T = Zn 2+ , Co 2+ , Cu 2+ , Ni 2+ ) and refined from a model based on that structure. The lattice parameters were refined with R- 3 space group (148) a = 6.1014(2) Å, b = 6.1014(2) Å, c = 21.826(1) Å, α = 90°, β = 90°, and γ = 120°.

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来源期刊

$Powder Diffraction$

Powder Diffraction 工程技术-材料科学：表征与测试

CiteScore

0.90

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Powder Diffraction is a quarterly journal publishing articles, both experimental and theoretical, on the use of powder diffraction and related techniques for the characterization of crystalline materials. It is published by Cambridge University Press (CUP) for the International Centre for Diffraction Data (ICDD).