Crystal structure, electric and magnetic behaviour of Ce2Pd9Sb3

A new ternary compound in the Ce–Pd–Sb system has been observed and studied by single-crystal diffraction, magnetic susceptibility and resistivity. This new compound, Ce2Pd9Sb3, was determined to crystallize in the Y2Co3Ga9 structure type: Cmcm, a, = 13.769(2)A, b= 8.0412(8)A, c= 9.348(1)A, wR2 = 6.7%, 709 F2 values and 42 variables. An anti-site relationship exists between the p block and transition elements relative to the parent structure type. The magnetic susceptibility exhibits Curie–Weiss behaviour with an effective cerium moment of 2.51(3)µB, comparable to the free ion value of 2.54 µB and negligible exchange [θ= 2(2) K]. No ordering of moments is observed above 4.2 K. Resistivity measurements indicate simple metallic behaviour with no apparent evidence for interaction between the local cerium moments and conduction electrons.

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