New compounds with Nd11Pd4In9 structure type in the systems RE-Pd-In (REÂ =Â La, Ce, Pr, Nd, Sm, Gd, Tb, Dy)

Series of RE11Pd4In9 compounds (RE = La, Ce, Pr, Nd, Sm, Gd, Tb, Dy) were obtained by arc-melting of metals under an argon atmosphere with subsequent annealing at 870 K. Their crystal structure have been determined from X-ray powder data (STOE STADI P diffractometer, Cu Kα-radiation) and belong to the Nd11Pd4In9 structure type (space group Cmmm, Z = 2), which is the member of homological series based on AlB2 and CsCl types. Lattice constants: a = 15.581(5), b = 22.606(8), c = 3.767(1) Å for La11Pd4In9; a = 15.431(6), b = 22.516(9), c = 3.763(2) Å for Ce11Pd4In9; a = 14.883(3), b = 22.319(4), c = 3.736(1) Å for Pr11Pd4In9; a = 14.825(6), b = 22.269(8), c = 3.779(1) Å for Nd11Pd4In9; a = 14.706(2), b = 22.094(3), c = 3.729(1) Å for Sm11Pd4In9; a = 14.701(3), b = 22.046(5), c = 3.722(8) Å for Gd11Pd4In9; a = 14.614(5), b = 21.985(3), c = 3.679(2) Å for Tb11Pd4In9; a = 14.606(4), b = 21.896(6), c = 3.626(9) Å for Dy11Pd4In9.