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400475

Sigma-Aldrich

Tantalum(V) chloride

99.99% trace metals basis

Synonym(s):

Tantalum pentachloride

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About This Item

Linear Formula:
TaCl5
CAS Number:
7721-01-9
Molecular Weight:
358.21
EC Number:
231-755-6
MDL number:
MFCD00011253
UNSPSC Code:
12352302
PubChem Substance ID:
24864923
NACRES:
NA.23

Quality Level

200

assay

99.99% trace metals basis

form

powder

reaction suitability

reagent type: catalyst
core: tantalum

impurities

≤150.0 ppm Trace Metal Analysis

density

3.68 g/mL at 25 °C (lit.)

SMILES string

Cl[Ta](Cl)(Cl)(Cl)Cl

InChI

1S/5ClH.Ta/h5*1H;/q;;;;;+5/p-5

InChI key

OEIMLTQPLAGXMX-UHFFFAOYSA-I

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Application

Used to form mixed chloro-aryloxide compounds, such as [Ta(OC6H3-2,6-i-Pr2)2Cl3]2, which form pyridine or phosphine adducts with a distortedsix-coordinate geometry. Also used as a starting material for new edge-bridged octahedral M6 cluster compounds such as CsErTa6Cl18, for which electron and stability studies were performed.

Preparation Note

Used in the preparation of a simple catalyst for the polycyclotrimerizations of alkenediynes. Used for the plasma-enhanced atomic layer deposition of tantalum nitride films.

pictograms

CorrosionExclamation mark
GHS05,GHS07

signalword

Danger

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1B - STOT SE 3

target_organs

Respiratory system

supp_hazards

EUH014

Storage Class

8B - Non-combustible, corrosive hazardous materials

wgk_germany

WGK 1

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Zheng, R., et al.
Macromolecules, 37, 5196-5196 (2004)
Kim, H., et al.
Journal of Applied Physiology, 95, 5848-5848 (2004)
Ogliaro, F. et al.
Inorganic Chemistry, 37, 6199-6199 (1998)
Janet R. Clark et al.
Inorganic chemistry, 36(17), 3623-3631 (1997-08-13)
The mixed chloro-aryloxide compounds [M(OC(6)H(3)Pr(i)(2)-2,6)(2)Cl(3)](2) (M = Nb (1a), Ta (1b); both structurally characterized) and [M(OC(6)H(3)Pr(i)(2)-2,6)(3)Cl(2)] (M = Nb (2a), Ta (2b)) react with pyridine (py) and PMe(2)Ph to produce a series of adducts cis-mer-[MCl(3)(OC(6)H(3)Pr(i)(2)-2,6)(2)(L)] (M, L: Nb, py (3a);

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