摘要
将Eu_2O_3,K_2CO_3和(NH_4)_2HPO_4混合物加热,制得γ和β相KEu(PO_3)_4的混合物.测定了产品的化学组成、IR与X射线粉末衍射图谱,并计算出其晶胞参数.首次观察到γ—KEu(PO_3)_4为单斜晶系,P2_1/c,a=1.070(3)nm,b=0.898(1)nm,c=1.272(4)nm,β=128.1(2)°,Z=4;β-KEu(PO_3)_4为单斜晶系,C2/c,a=0.775(1)nm,b=1.200(1)nm,c=1.098(1)nm,β=112.5(1)°,Z=4.
KEu(PO_3)_4 is prepared by heating the mixture of Eu_2O_3, K_2CO_3 and (NH_4)_2HPO_4. A mixture of γ-and β-KEu(PO_3)_4 is obtained. The chemical composition, crystallographic data, and IR spectra for this compound are given. The γ-KEu(PO_3)_4 is obtained for the first time, it belongs to the P2_1/c space group with lattice parameters: a=1.070(3)nm, b=0.898(1)nm, c=1.274(4)nm, β=128.1(2)°, Z=4. β-KEu(PO_3)_4 belongs to the C 2/c space group with lattice parameters: a=0.775(1)nm, b=1.200(1) nm, c=1.098(1)nm, 0=112.5(1)°, Z=4.
出处
《北京师范大学学报（自然科学版）》
CAS
CSCD
1992年第1期67-71,共5页
Journal of Beijing Normal University(Natural Science)
基金
国家自然科学基金
