Ternary phosphides Ce3Zn2-xP4 and Ce4Zn2-xP5 - Stacking variants of CeP6 octahedra and ZnP4 tetrahedra
Lincke H, Hermes W, Nilges T, Pöttgen R
Research article (journal)Abstract
New ternary phosphides Ce3Zn2-xP4 and Ce4Zn2-xP5 were synthesized from intermetallic precursors CeZn and CeZn3, cerium, and phosphorus in equimolar NaCl/KCl fluxes. The structures were refined on the basis of single crystal X-ray diffractometer data: La3Zn2P4 type, , a=414.1(1), c=4102(1)pm, wR2=0.0378, 288 F2 values, 17 variables for Ce3Zn1.82P4 and , a=415.9(1), c=1710.5(6)pm, wR2=0.0408, 361 F2 values, 20 variables for Ce4Zn1.80P5 (new structure type). The phosphorus atoms in both structures form close-packed layers with stacking sequences (hhcc)3 for Ce3Zn1.82P4 and hhccc for Ce4Zn1.80P5. The cerium and zinc atoms fill octahedral and tetrahedral voids in the close-packed phosphide substructures with Ce-P and Zn-P distances in the ranges 291-302 and 249-251pm. Temperature-dependent susceptibility measurements of Ce4Zn1.80P5 show an experimental magnetic moment of 2.55(1)μB/Ce atom, indicating pure trivalent cerium. Ce4Zn1.80P5 orders antiferromagnetically at 3.5(1)K.
Details about the publication
Authors from the University of Münster
| Nilges, Tom | Institute of Inorganic and Analytical Chemistry |
| Pöttgen, Rainer | Professorship of Inorganic Chemistry (Prof. Pöttgen) |