Actinoid transition metal phosphides An2T12P7 (An = Th, U; T = Fe, Co, Ni) and arsenides An2T12As7 (An = Th, U; T = Co, Ni) with Zr2Fe12P7 type structure.

The preparation and the lattice parameters for the ten title compounds with Zr(2)Fe(12)P(7) type structure are reported; six of them for the first time. The crystal structures of the phosphides Th(2)Fe(12)P(7) (a = 917.3(1) pm, c = 372.

The metal flux: a preparative tool for the exploration of intermetallic compounds.

This review highlights the use and great potential of liquid metals as exotic and powerful solvents (i.e. fluxes) for the synthesis of intermetallic phases.

Ternary rare earth osmium aluminides R(7+)(x)Os(12)Al(61+)(y) belonging to a structural family with layered topology.

The 10 intermetallic compounds R(7+)(x)Os(12)Al(61+)(y) (R = Y, Nd, Sm, Gd-Tm) were prepared by arc-melting of the elemental components. They crystallize with a hexagonal structure very similar to that of Y(7.28)Re(12)Al(61.

Lanthanoid Rhenium Aluminides with a High Content of Aluminum: LnRe(2)Al(10) (Ln = Ho-Lu) with a New Structure Type and NdRe(2)Al(10) with CaCr(2)Al(10)-Type Structure.

The title compounds were obtained by reaction of the elemental components with an excess of aluminum after dissolving the matrix in hydrochloric acid. The compounds LnRe(2)Al(10) (Ln = Ho-Lu) crystallize with a new structure type, which was determined from single-crystal X-ray data of LuRe(2)Al(10): Cmcm, a = 929.1(1) pm, b = 1027.

Lanthanum Nickel Silicides with the General Formula La(()(n)()(+1)()(n)()(+2))Ni(n)()(()(n)()(-)(1)+2)Si(n)()(()(n)()(+1)) and Other Series of Hexagonal Structures with Metal:Metalloid Ratios Close to 2:1.

The closely related crystal structures of the compounds La(6)Ni(2)Si(3) (La(12)Ni(4)Si(6), n = 2) and La(5)Ni(2)Si(3) (La(20)Ni(8)Si(12), n = 3) as well as those of the new compounds La(15)Ni(7)Si(10) (La(30)Ni(14)Si(20), n = 4) and La(21)Ni(11)Si(15) (La(42)Ni(22)Si(30), n = 5) were determined from single-crystal X-ray diffractometer data. In these hexagonal silicides (space group P6(3)/m) almost all atoms are situated on mirror planes, which extend perpendicular to the short c axes. The only exceptions are nickel atoms located on the 6(3) axes, which show some disorder resulting in the exact compositions La(6)Ni(1.

Equiatomic Quaternary Rare Earth Element Zinc Pnictide Oxides RZnPO and RZnAsO.

The twelve phosphide oxides RZnPO (R = Y, La-Nd, Sm, Gd-Tm) and the nine arsenide oxides (R = Y, La-Nd, Sm, Gd-Dy) have been prepared by reaction of the rare earth elements, ZnO, and phosphorus or arsenic, respectively, in a NaCl/KCl flux. The compounds RZnPO (R = Y, Pr, Nd, Sm, Gd-Tm) crystallize with a new trigonal rhombohedral structure type, determined from single-crystal X-ray diffractometer data of NdZnPO: R&thremacr;m, a = 397.7(1) pm, c = 3097.