What molecule am I?
Palladium disulfide [palladium(IV) sulfide, or PdS2] is a grey-to-black crystalline powder. It is made by heating palladium(II) sulfide1 (PdS) or palladium(II) chloride2 (PdCl2) with excess elemental sulfur.
PdS2 has been known since 1956, when Fredrik Gr酶nvold and Erling R酶st at the University of Oslo (Blindern, Norway) , along with other palladium sulfides and its selenides and tellurides. They reported the crystal structure shown in the 3-D image above. An early use of PdS2 was cited in a 1974 USSR patent as a catalyst for the partial hydrogenation of cyclopentadiene to cyclopentene.
Fast-forward to 2021, when Yanfen Wan, Xiaohua Yu, and Peng Yang, and co-workers at Yunnan University and Kunming University of Science and Technology (both in Kunming, China) used a plasma-enhanced chemical vapor deposition method to prepare . The authors state that the physical properties of their materials 鈥渁re very helpful in developing high-performance opto-electronic applications鈥� such as field-effect transistors.
1. CAS Reg. No. 12125-22-3.
2. CAS Reg. No. 7647-10-1.
Palladium disulfide听hazard information*
| Hazard class** | GHS code and hazard statement | |
|---|---|---|
| Skin corrosion/irritation, category 2 | H315鈥擟auses skin irritation |  |
| Serious eye damage/eye irritation, category 2A | H319鈥擟auses serious eye irritation | |
Specific target organ toxicity, single exposure, respiratory tract irritation, category 3 | H335鈥擬ay cause respiratory irritation | |
*No safety data sheets for palladium disulfide are available. The information above is for palladium(II) sulfide.
**Globally Harmonized System (GHS) of Classification and Labeling of Chemicals.听
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Palladium disulfide听
fast facts
| CAS Reg. No. | 12137-75-6 |
nomenclature | Palladium sulfide (PdS2) |
| Empirical formula | PdS2 |
| Molar mass | 170.55听g/mol |
| Appearance | Gray to black crystals or powder |
| Melting point | 600 掳C (dec.) |
| Water solubility | Insoluble |
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