引用本文:
邢彦, 胡宁海, 周清廉, 洪广言, 越淑英. 四磷酸铽钾的晶体结构[J]. 物理化学学报,
1987, 3(02): 218-221.
doi:
10.3866/PKU.WHXB19870219
Citation: Xing Yan, Hu Ninghai, Zhou Qinglian, Hong Guangyan, Yue Shuying. CRYSTAL STRUCTURE OF POTASSIUM TERBIUM METAPHOSPHATE[J]. Acta Physico-Chimica Sinica, 1987, 3(02): 218-221. doi: 10.3866/PKU.WHXB19870219
Citation: Xing Yan, Hu Ninghai, Zhou Qinglian, Hong Guangyan, Yue Shuying. CRYSTAL STRUCTURE OF POTASSIUM TERBIUM METAPHOSPHATE[J]. Acta Physico-Chimica Sinica, 1987, 3(02): 218-221. doi: 10.3866/PKU.WHXB19870219
四磷酸铽钾的晶体结构
English
CRYSTAL STRUCTURE OF POTASSIUM TERBIUM METAPHOSPHATE
Abstract:
The crystal of potassium terbium metaphosphate KTb(PO_3)_4 belongs to the monoclinic space group P2_1 with unit cell parameters a=0.7239(1) nm, b=0.8325(2) nm, c=0.7896(1) nm, β=91.82(1)°, V=0.4756 nm, Z=2. The structure was solved by heavy-atom method and the final R=0.034 after refining by block-dia nal least-squares method. The structure contains helical ribbons, (PO_3)_n, formed by cornersharing tetrahedra of PO_4. The coordination of the terbium by oxygen atoms is eight-fold with the geometry of dodecahedra. The shortest Tb—Tb distance is 0.6544 nm.
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