Tantalum(V) chloride
Tantalum(V) chloride, also known as tantalum pentachloride, is an inorganic compound with the formula TaCl5. It takes the form of a white powder and is commonly used as a starting material in tantalum chemistry. It readily hydrolyzes to form tantalum(V) oxychloride (TaOCl3) and eventually tantalum pentoxide (Ta2O5); this requires that it be synthesised and manipulated under anhydrous conditions, using air-free techniques.
| Names | |
|---|---|
| IUPAC names
Tantalum(V) chloride Tantalum pentachloride | |
| Identifiers | |
| |
3D model (JSmol) |
|
| ChemSpider | |
| ECHA InfoCard | 100.028.869 |
| EC Number |
|
PubChem CID |
|
| UNII | |
CompTox Dashboard (EPA) |
|
| |
| |
| Properties | |
| TaCl5 | |
| Molar mass | 358.213 g/mol |
| Appearance | white monoclinic crystals |
| Density | 3.68 g/cm3 |
| Melting point | 216 °C (421 °F; 489 K) |
| Boiling point | 239.4 °C (462.9 °F; 512.5 K) (decomposes) |
| reacts | |
| Solubility | chloroform, CCl4 |
| +140.0×10−6 cm3/mol | |
| Structure | |
| Monoclinic, mS72 | |
| C2/m, No. 12 | |
| Thermochemistry | |
Std molar entropy (S⦵298) |
221.75 J K−1 mol−1 |
Std enthalpy of formation (ΔfH⦵298) |
-858.98 kJ/mol |
| Hazards | |
| GHS labelling: | |
| Danger | |
| H302, H314 | |
| P280, P305+P351+P338, P310 | |
| NFPA 704 (fire diamond) | |
| Flash point | Non-flammable |
| Lethal dose or concentration (LD, LC): | |
LD50 (median dose) |
1900 mg/kg (oral, rat) |
| Safety data sheet (SDS) | External SDS |
| Related compounds | |
Other anions |
Tantalum(V) fluoride Tantalum(V) bromide Tantalum(V) iodide |
Other cations |
Vanadium(IV) chloride Niobium(V) chloride |
Related compounds |
Tantalum(III) chloride, Tantalum(IV) chloride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.