Structural Relationships, Phase Stability and Bonding of Compounds PdSn_n (n = 2, 3, 4).

Abstract

Structure Structure D 2000 Structural Relationships, Phase Stability and Bonding of Compounds PdSn n (n = 2, 3, 4). -Single crystals of the title compounds are prepared under self-flux condition with the stannide in equilibrium with the melt. The samples are characterized by thermal analysis, 119 Sn Moessbauer spectroscopy, and ab initio DFT calculations. As revealed by single crystal XRD PdSn2 crystallizes in the tetragonal space group I41/acd with Z = 16, PdSn 3 in the orthorhombic space group Cmca with Z = 8, and PdSn 4 in the orthorhombic space group Ccca with Z = 4. The structures of the compounds represent stackings of similar building blocks and are closely related. -(NYLEN, J.; GARCIA GARCIA, F. J.; MOSEL, B. D.; POETTGEN, R.; HAEUSSERMANN, U.; Solid

Machine learning search for stable binary Sn alloys with Na, Ca, Cu, Pd, and Ag

“…13 and 14. The known phases defining parts of the ambient-pressure convex hull are oP8-PdSn discovered in 1946 [142], cP4-Pd 3 Sn and oP12-Pd 2 Sn reported in 1957 [143], and oS20-PdSn 4 observed in 2004 [147]. The mP24-Pd 5 Sn 7 phase was shown in 2010 to have partial occupancies [144].…”

“…The Pd-Sn binary has been attractive primarily due to its applications in nanocatalysis [138][139][140][141]. In the bulk crystalline form, Pd-Sn alloys have been observed at the 3:1, 2:1, 1:1, 5:7, 1:2, 1:3, and 1:4 compositions [142][143][144][145][146][147]. The oS20-PdSn 4 phase with space group Ccca has received most attention due its unusual topological properties.…”

“…The oS20-PdSn 4 phase with space group Ccca has received most attention due its unusual topological properties. This Sn-rich phase has the same crystal structure and electron count as PtSn 4 [147,148], known for its extremely large magnetoresistance [149] and Dirac node arcs [150,151], but features gapped out Dirac node arcs [151].…”

Controlled synthesis of monodisperse Pd x Sn 100−x nanoparticles and their catalytic activity for hydrogen generation from the hydrolysis of ammonia-borane

“…The sizes of all these Pd x Sn 100Àx NPs prepared here are around 6.5 nm. For the synthetic procedure of Pd x Sn 100Àx NPs, more TOP can protect Pd via Pd-TOP from the formation of Pd x Sn 100Àx nuclei in the reaction mixture, allowing more Pd (and Sn) to grow around the existing nuclei into larger NPs [33]. The as-synthesized Pd x Sn 100Àx NPs are of polycrystalline structure as indicated by diffused diffraction rings observed in the selected area electron diffraction pattern (SAED, Fig.…”

Superconductivity and band structure of layered AuSn$_4$

“…At this point, it is useful to compare the crystal structures of AuSn 4 , PtSn 4 and PdSn 4 , the latter two belonging unmistakeably to the 68 space group. The orthorhombic crystal structure has been determined, finding a = 0.643 nm, b = 1.135 nm and c = 0.638 nm for PtSn 4 [80], a = 0.644 nm, b = 1.145 nm and c = 0.639 nm for PdSn 4 [81], but a = 0.652 nm, b = 1.173 nm and c = 0.652 nm for AuSn 4 (assuming the 68 space group) [25]. Thus, the values of a and c are much closer to each other in AuSn 4 than in the other two compounds, making the presence of stacking faults and of domains with rotated in-plane orientations considerably more likely [26,27].…”