The new intermetallic compound Ga5Pt:Structure from a twinned crystal

Endohedral Cluster Superconductors in the Mo–Ga–Sn System Explored by the Joint Flux Technique

“…The Ga−Ga interatomic distances in Rh 3 Ga 16 and Rh 4 Ga 21 are in the range of 2.59−2.96 Å, 10 in PdGa 5 are in the range of 2.67−2.90 Å, 9 and in PtGa 5 are between 2.51 and 3.00 Å. 11 Obviously, the Ga5−Ga2 distance of 3.16 Å between the center of the cuboctahedron and the vertices of its rectangular faces significantly exceeds those listed above. At the same time, notably short contacts between the Ga5 and Sn1 atoms are observed: the Ga5−Sn1 distance is 2.20 Å in the crystal structure of Mo 4 Ga 21−x−δ Sn x .…”

“…An analysis of interatomic distances reveals that only one of those, namely Ga5–Ga1 (2.66 Å), is comparable with regular Ga–Ga distances in the crystal structures of endohedral gallium cluster compounds. The Ga–Ga interatomic distances in Rh 3 Ga 16 and Rh 4 Ga 21 are in the range of 2.59–2.96 Å, in PdGa 5 are in the range of 2.67–2.90 Å, and in PtGa 5 are between 2.51 and 3.00 Å . Obviously, the Ga5–Ga2 distance of 3.16 Å between the center of the cuboctahedron and the vertices of its rectangular faces significantly exceeds those listed above.…”

“…Among this class of compounds, Rh 2 Ga 9 , Ir 2 Ga 9 , ReGa 5 , Mo 8 Ga 41 , Mo 6 Ga 31 , , and Mo 4 Ga 20.5 S 0.5 superconductors were reported. In addition to the known superconductors, there are V 8 Ga 41 , Ta 6 Ga 31 , Ta 8 Ga 41 , PdGa 5 , Rh 3 Ga 16 , Rh 4 Ga 21 , and PtGa 5 , for which the transport properties were not addressed in the literature. Crystal structures of the listed compounds are built upon transition-metal-embedded Ga clusters with 9 or 10 vertices.…”

Pt–Ga Model SCALMS on Modified HOPG: Thermal Behavior and Stability in UHV and under Near-Ambient Conditions

“…28 Note that IMCs and single Pt atoms at the surface of Ga-rich phases (in both the solid and liquid states) will expose Pt surface sites in a similar and (more or less) isolated environment. 43,44 Theoretical calculations predict that the stretching frequency and binding energy of CO on Pd−Ga SCALMS are dependent on the number of Pd atoms in the coordination environment of the surface Pd atom that binds CO. 13 Accordingly, we ascribe the broad band at 2038 cm −1 observed at low temperatures to isolated Pt atoms. With increasing temperature more Pt atoms migrate to the surface region.…”

“…Once the kinetic limitations are overcome, we expect the formation of solid IMCs coexisting with a Ga-rich phase (depending on the Pt concentration) . Note that IMCs and single Pt atoms at the surface of Ga-rich phases (in both the solid and liquid states) will expose Pt surface sites in a similar and (more or less) isolated environment. , …”