Gallium palladide

Gallium palladide

Names
Preferred IUPAC name Gallium palladide
Identifiers
CAS Number	59125-32-5^Y
3D model (JSmol)	Interactive image
ChemSpider	57529037
PubChem CID	15162368
CompTox Dashboard (EPA)	DTXSID90851987
InChI InChI=1S/Ga.Pd Key: OZTVKGRKOWIYRK-UHFFFAOYSA-N
SMILES [Ga].[Pd]
Properties
Chemical formula	GaPd
Molar mass	176.14 g·mol^−1
Structure[1]
Crystal structure	Iron monosilicide (cubic)
Space group	P213 (No. 198)
Lattice constant	a = 489.695 pm
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Gallium palladide (GaPd or PdGa)^[2] is an intermetallic combination of gallium and palladium. It has the iron monosilicide crystal structure.^[3] The compound has been suggested as an improved catalyst for hydrogenation reactions.^[4][5] In principle, gallium palladide can be a more selective catalyst since unlike substituted compounds, the palladium atoms are spaced out in a regular crystal structure rather than randomly.^[6][7]

References

1. Armbrüster, Marc; Borrmann, Horst; Wedel, Michael; Prots, Yurii; Giedigkeit, Rainer; Gille, Peter (2010). "Refinement of the crystal structure of palladium gallium (1:1), PdGa" (PDF). Zeitschrift für Kristallographie - New Crystal Structures. 225 (4). Walter de Gruyter GmbH: 617–618. doi:10.1524/ncrs.2010.0269. ISSN 2197-4578. S2CID 98458695.
2. Grin, Yu.; Armbrüster, M.; Baranov, A. I.; Finzel, K.; Kohout, M.; Ormeci, A.; Rosner, H.; Wagner, F. R. (2015-10-27). "Atomic interactions in the intermetallic catalyst GaPd". Molecular Physics. 114 (7–8). Informa UK Limited: 1250–1259. doi:10.1080/00268976.2015.1093664. ISSN 0026-8976. S2CID 102016870.
3. Bhargava, M.K; Gadalla, A.A; Schubert, K (1975). "Koexistente phasen vom FeSi-Typ in den mischungen Ni-Pd-Ga und Ni-Pt-Ga". Journal of the Less Common Metals (in German). 42 (1). Elsevier BV: 69–76. doi:10.1016/0022-5088(75)90021-1. ISSN 0022-5088.
4. OSSWALD, J; GIEDIGKEIT, R; JENTOFT, R; ARMBRUSTER, M; GIRGSDIES, F; KOVNIR, K; RESSLER, T; GRIN, Y; SCHLOGL, R (2008-08-15). "Palladium–gallium intermetallic compounds for the selective hydrogenation of acetylenePart I: Preparation and structural investigation under reaction conditions". Journal of Catalysis. 258 (1). Elsevier BV: 210–218. doi:10.1016/j.jcat.2008.06.013. hdl:11858/00-001M-0000-0010-FC1D-A. ISSN 0021-9517.
5. OSSWALD, J; KOVNIR, K; ARMBRUSTER, M; GIEDIGKEIT, R; JENTOFT, R; WILD, U; GRIN, Y; SCHLOGL, R (2008-08-15). "Palladium–gallium intermetallic compounds for the selective hydrogenation of acetylenePart II: Surface characterization and catalytic performance". Journal of Catalysis. 258 (1). Elsevier BV: 219–227. doi:10.1016/j.jcat.2008.06.014. hdl:11858/00-001M-0000-0010-FC1A-0. ISSN 0021-9517.
6. Armbrüster, Marc; Schlögl, Robert; Grin, Yuri (2014). "Intermetallic compounds in heterogeneous catalysis—a quickly developing field". Science and Technology of Advanced Materials. 15 (3). Informa UK Limited: 034803. Bibcode:2014STAdM..15c4803A. doi:10.1088/1468-6996/15/3/034803. ISSN 1468-6996. PMC 5090519. PMID 27877674.
7. Krajčı´, M.; Hafner, J. (2012). "The (210) surface of intermetallic B20 compound GaPd as a selective hydrogenation catalyst: A DFT study". Journal of Catalysis. 295. Elsevier BV: 70–80. doi:10.1016/j.jcat.2012.07.025. ISSN 0021-9517.