Na 7 Sr 2 Fe 7 F 32是正交晶体(空间群Fddd),其a = 10.372(3)Å,b = 10.805(3)Å,c = 44.98(2)Å,Z = 8。使用1261个独立X射线反射的单晶数据,可靠性R = 0.036(R W = 0.029)。角共享铁八面体产生三维网络|:Fe 7 F 32 | 11n- n,其中线性跨接| FeF 5 | 2n- n链和| Fe 5 F 26 | 八面体五聚体可以被区分。Na 7 Sr 2 Fe 7 F 3 2明显表现出非典型的磁行为,这是由Mössbauer和磁测量(Tc≈35 K)所证明的。关于受挫的八面体网络,建议在铁磁和反铁磁耦合之间进行竞争。
Synthesis, Crystal Structure, and Magnetic Study of Na7Sr2Fe7F32
作者:A. Hemon-Ribaud、J.M. Greneche、G. Courbion
DOI:10.1006/jssc.1994.1269
日期:1994.9
Na7Sr2Fe7F32 is orthorhombic (space group Fddd) with a = 10.372(3) Å, b = 10.805(3) Å, c = 44.98(2) Å, and Z = 8. The structure was determined from single-crystal data using 1261 independent X-ray reflections, with reliability R = 0.036 (RW = 0.029). Corner-sharing iron octahedra give rise to a three-dimensional network |:Fe7F32|11n-n, where linear trans connected |FeF5|2n-n chains and |Fe5F26| octahedra
Na 7 Sr 2 Fe 7 F 32是正交晶体(空间群Fddd),其a = 10.372(3)Å,b = 10.805(3)Å,c = 44.98(2)Å,Z = 8。使用1261个独立X射线反射的单晶数据,可靠性R = 0.036(R W = 0.029)。角共享铁八面体产生三维网络|:Fe 7 F 32 | 11n- n,其中线性跨接| FeF 5 | 2n- n链和| Fe 5 F 26 | 八面体五聚体可以被区分。Na 7 Sr 2 Fe 7 F 3 2明显表现出非典型的磁行为,这是由Mössbauer和磁测量(Tc≈35 K)所证明的。关于受挫的八面体网络,建议在铁磁和反铁磁耦合之间进行竞争。