ChemInform Abstract: Syntheses, Structures, and Theoretical Studies of New Ternary Antimonides β‐LnCoSb₃ (Ln: La—Nd, Sm).

Abstract

Cobalt I 7200Syntheses, Structures, and Theoretical Studies of New Ternary Antimonides β-LnCoSb 3 (Ln: La-Nd, Sm). -Single crystals of the title compounds are prepared from stoichiometric mixtures of the elements using Sn as a flux (silica tube, 1050°C, 3 d) and characterized by single crystal XRD and electronic structure calculations for β-LaCoSb3 using the TB-LMTO method. The compounds crystallize in the space group Pbcm with Z = 8 (β-LnNiSb3-type structure). The structure features alternating layers of condensed CoSb 6 octahedra and anionic square Sb nets that are separated by Ln 3+ cations. -(CAI, W.-Z.; WU, L.-M.; LI, L.-H.; CHEN*, L.; Eur.

Review on crystal structures and magnetic properties of RTX 3 materials

“…RFeSb 3 [61], RNi(Sn,Sb) 3 [62] and RCoSb 3 [63] compounds of the RT X 3 family crystallize in the orthorhombic lattice LaPdSb 3 -type structure with space group P bcm, similarly to CeCrSb 3 -type structure [54]. A difference between these structure types is two crystallographically inequivalent R atoms in the LaPdSb 3 -type structure and only one crystallographically equivalent R atom in the CeCrSb 3 -type structure.…”

“…Single crystals of RPdSb 3 (R = Ce-Nd, Sm, Gd-Dy) [37], RCrSb 3 [75][76][77][78][79], RVSb 3 [75,80] and RFeSb 3 (R = Pr, Nd, Sm, Gd, and Tb) [61] were synthesized using the liquid self (Sb) flux. Single crystals of RNiSi 3 (R = Gd-Tm, Yb) [41], β-CeNiSb 3 [81], RCoSb 3 (R = Ce, Pr, Nd and Sm) [63], RCrGe 3 (R = Ce, Pr, Nd and Sm) [56]and RNi(Sn,Sb) 3 (R = Pr, Nd, Sm, Gd and Tb) [62] were grown using liquid Sn flux.…”

“…Moreover, these materials show anisotropic magnetic behavior [80]. β-CeNiSb 3 [81], RFeSb 3 [61], RNi(Sn,Sb) 3 [62] and RCoSb 3 [63] compounds of the RT X 3 family are reported to crystallize in the orthorhombic lattice LaPdSb 3 -type structure with space group P bcm. A single crystal study of β-CeNiSb 3 reported to have ferromagnetic ordering below 6 K [81].…”

“…Paramagnetic behavior is reported in single crystals of RNi(Sn,Sb) 3 (R = Pr, Sm, Gd and Tb) [62]. Single crystals of RCoSb 3 (R = Ce, Pr, Nd and Sm) have been reported with only the crystal structure and the magnetic properties of these materials are yet to be reported [63].…”