Nd11Pd4In9 compound – A new member of the homological series based on AlB2 and CsCl types

Crystal structure of the RE11Ni4In9 compounds (RE = La, Ce, Pr, Nd, Sm, Gd, Tb and Y)

“…Since the Gd 45.8 Ni 16.7 In 37.5 sample has been obtained without any impurities, analysis of its X-ray powder diffraction data revealed that the compound may be isostructural to the Nd 11 Pd 4 In 9 [18] type. All further calculations confirmed this supposition.…”

“…[18] the structure of Nd 11 Pd 4 In 9 together with the structures of Lu 5 Ni 2 In 4 , Mo 2 FeB 2 , Mn 2 AlB 2 and Cr 3 AlB 4 forms homological series of compounds, stacked by AlB 2 and CsCl fragments, with a total formula described as RE mþn T 2n X m , where the T and X atoms are transition metals and indium (boron), respectively. The numbers m and n correspond to the quantity of AlB 2 (RENi 2 ) and CsCl (REIn) fragments.…”

“…Dy, Ho, Er, Tm, Lu [8,9] and Sc [10] while the larger rare earths La-Nd, Sm, Gd, Tb, Y form the structure of the Nd 11 Pd 4 In 9 type [18]. The variation of the parameter (V/N) (where V is the volume of the unit cell, N -the number of atoms per unit cell) for RE 11 Ni 4 In 9 and RE 5 Ni 2 In 4 [4,9] compounds as a size function of the effective ionic radii of the rareearths (R 3þ , coordination number VI) [24] is shown in Fig.…”

“…The compounds with the same structure type are also formed in the some systems RE-{Rh, Ir, Pd, Pt}-In [10][11][12][13][14][15] and {Zr, Hf}-{Rh, Ir}-In [16,17]. Recently, [18,19] we have been investigating the crystal structure of Nd 11 Pd 4 In 9 which is related to the Lu 5 Ni 2 In 4 crystal structure. Both compounds have almost the same composition RE 45.5 T 18.2 In 36.3 (for Lu 5 Ni 2 In 4 ) and RE 45.8 T 16.7 In 37.5 (for Nd 11 Pd 4 In 9 ) and a similar structure, which is built from the CsCl-and AlB 2 -types fragments.…”

The novel intermetallic phases TbNiMg and Tb4+xNi2Mg3−x (x = 0.2): Synthesis, crystal structure and peculiarities

“…The Tb 4þx Ni 2 Mg 3Àx phase could be assigned to the series of general formula R 0 2mþn X 2n R 00 2m firstly described by Kuz'ma [25], which is composed of two kinds of constituent blocks: AlB 2 -type (whose number is indicated by n in the formula) and CsCl-type cubes (m in the formula). A branch of this series, containing beside the Tb 4þx Ni 2 Mg 3Àx phase also the recently published Nd 4 Co 2 Mg 3 [26] and Nd 11 Pd 4 In 9 [27] intermetallic compounds together with Lu 5 Ni 2 In 4 [28] and Mo 2 FeB 2 [14] structure types, can be individuated as a planar intergrowth set because the two-dimensional segments of the constituent fragments are stacked within a stacking plane (Fig. 5b).…”