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Niobium(V) chloride
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Niobium(V) chloride, also known as niobium pentachloride, is a yellow crystalline solid. It hydrolyzes in air, and samples are often contaminated with small amounts of NbOCl3. It is often used as a precursor to other compounds of niobium. NbCl5 may be purified by sublimation.[1]
Quick Facts Names, Identifiers ...
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Names | |
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IUPAC names
Niobium(V) chloride Niobium pentachloride | |
Identifiers | |
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3D model (JSmol) |
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ChemSpider | |
ECHA InfoCard | 100.030.042 ![]() |
EC Number |
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PubChem CID |
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RTECS number |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
NbCl5 | |
Molar mass | 270.17 g/mol |
Appearance | yellow monoclinic crystals deliquescent |
Density | 2.75 g/cm3 |
Melting point | 204.7 °C (400.5 °F; 477.8 K) |
Boiling point | 248.2 °C (478.8 °F; 521.3 K) |
decomposes | |
Solubility | HCl, chloroform, CCl4 |
Thermochemistry | |
Std molar entropy (S⦵298) |
214.05 J K−1 mol−1 |
Std enthalpy of formation (ΔfH⦵298) |
-797.47 kJ/mol |
Hazards | |
GHS labelling: | |
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Danger | |
H302, H312, H314, H332 | |
P260, P261, P264, P270, P271, P280, P301+P312, P301+P330+P331, P302+P352, P303+P361+P353, P304+P312, P304+P340, P305+P351+P338, P310, P312, P321, P322, P330, P363, P405, P501 | |
Flash point | Non-flammable |
Related compounds | |
Other anions |
Niobium(V) fluoride Niobium(V) bromide Niobium(V) iodide |
Other cations |
Vanadium(IV) chloride Tantalum(V) chloride |
Related niobium chlorides |
Niobium(III) chloride Niobium(IV) chloride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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