CRYSTAL-STRUCTURE, ELECTRIC AND MAGNETIC-BEHAVIOR OF CE2PD9SB3

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