Crystal structure and magnetism of the Y2Pd14B5 compound

The crystal structure of the ternary boride Y2Pd14B5, space group I4(1)/amd, a = 8.484(2) Angstrom, c = 16.490(3) Angstrom, V = 1186.98 Angstrom(3), Z = 4, was refined down to R = 0.0475, wR2 = 0.1276 from single crystal X-ray diffraction data. Two types of coordination for boron atoms were observed: the coordination sphere for the B1 atom is a trigonal prism with one additional atom; the B2 atom has only four neighboring atoms which form a square. No boron-boron contact was observed. Analysis of the Y2Pd14B5 crystal structure shows the existence of a correlation between this structure and the Sc4Ni29B10 structure type. Magnetization and AC susceptibility measurements indicate that there is no superconducting or magnetic transition in Y2Pd14B5 down to 2 K. (C) 2003 Elsevier B.V. All rights reserved.