Schurz Christian M, Meyer Gerd, Schleid Thomas
Acta Crystallogr Sect E Struct Rep Online. 2011 May 1;67(Pt 5):i33. doi: 10.1107/S1600536811014498. Epub 2011 Apr 29.
Single crystals of the title compound, tris-odium hexa-chloridodysprosate, Na(3)DyCl(6), were obtained as a by-product of synthesis using dysprosium(III) chloride and sodium chloride among others. The monoclinic structure with its typical β angle close to 90° [90.823 (4)°] is isotypic with the mineral cryolite (Na(3)AlF(6)) and the high-temperature structure of the Na(3)MCl(6) series, with M = Eu-Lu, Y and Sc. The isolated, almost perfect DyCl(6) octa-hedra are inter-connected via two crystallographically different Na(+) cations: while one Na(+) resides on centres of symmetry (as well as Dy(3+)) and also builds almost perfect, isolated NaCl(6) octa-hedra, the other Na(+) is surrounded by seven chloride anions forming a distorted NaCl(7) trigonal prism with just one cap as close secondary contact.
标题化合物六氯镝酸钠（Na₃DyCl₆）的单晶是在使用氯化镝（III）和氯化钠等进行合成时作为副产物获得的。其单斜结构的典型β角接近90°[90.823（4）°]，与矿物冰晶石（Na₃AlF₆）以及Na₃MCl₆系列（M = Eu - Lu、Y和Sc）的高温结构同型。孤立的、近乎完美的[DyCl₆]³⁻八面体通过两种晶体学上不同的Na⁺阳离子相互连接：一个Na⁺位于对称中心（与Dy³⁺一样），并且还形成几乎完美的、孤立的[NaCl₆]⁵⁻八面体，另一个Na⁺被七个氯离子包围，形成一个扭曲的[NaCl₇]⁶⁻三角棱柱，只有一个帽作为紧密的次级接触。
