(3,3-Dimethyl-1-butyne)dicobalt hexacarbonyl

Synonym: Dicobalt Hexacarbonyl Tert-ButylAcetylene, Dicobalt hexacarbonyl t-butylacetylen, Hexacarbonyl(3,3-dimethyl-1-butyne)dicobalt, CCTBA

CAS Number 56792-69-9 | MDL Number MFCD00054408 

CCTBA Chemical Structure

Product codeCO2699
CAS number56792-69-9
Assay (purity)99%+
Purity methodby integration NMR H1
IRconforms to structure
Molecular weight368.07 g/mol
Appearancedark red liquid
Boiling point52 °C (125.6 °F) @ 0.83 mm Hg
Flash point84 °C (183.2 °F)
Molecular formulaC12H10Co2O6
Linear formulaCo2(CO)6[HC≡C(C(CH3)3)]
Packagingglassware/metal containers/bubblers

(3,3-Dimethyl-1-butyne)dicobalt hexacarbonyl has been used as a precursor of Co films deposited by plasma-enhanced atomic layer deposition (PEALD) for Cu direct plating. The electrical properties of PEALD Co films of sub-20 nm thickness were determined by assessing continuities, morphologies, and impurities. To decrease the resistivity of Co films, a TaNx substrate was pre-treated with H2 plasma and the flow rate of H2 gas during CCTBA feeding and reactant feeding pulses was increased. Co films were deposited on a 3 nm-thick TaNx-covered SiO2 substrate with 24 nm-deep trenches, and Cu direct plating was successfully performed under conventional conditions. Cobalt is an important component of thin layers used in microelectronics like magnetoresistive devices, integrated circuits as well as lithium battery technologies and spintronics. See links below

Ereztech manufactures and sells this product in small and bulk volumes. Glass ampules, bottles or metal ampules or bubblers are available for packaging. For additional analytical information or details about purchasing (3,3-Dimethyl-1-butyne)dicobalt hexacarbonyl contact us at sales@ereztech.com

Safety information

Hazardous class3
Packing groupIII
Signal wordDANGER
Hazard statementsH332-H334-H351-H361-H412
Precautionary statementsP201-P202-P210-P261-P264-P270-P271-P272-P273-P280-P281-P285
Transport descriptionCombustible liquid, n.o.s. (Dicobalt hexacarbonyl tert- butylacetylene)
In TSCA registryNo (sold for research and development usage only)

First Aid Measures

General adviceConsult a physician. Show this safety data sheet to the doctor in attendance. Move out of the dangerous area.
Eye contactRinse thoroughly with plenty of water for at least 15 minutes and consult a physician.
Skin contactWash off with soap and plenty of water. Consult a physician.
InhalationIf breathed in, move person into the fresh air. If not breathing, give artificial respiration. Consult a physician.
If swallowedDo NOT induce vomiting. Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.

Certificates of Analysis (CoA)

If you don’t see the needed lot of (3,3-Dimethyl-1-butyne)dicobalt hexacarbonyl below please contact customer support at sales@ereztech.com

Lot# 005/537 Lot#013/013 Lot#013/014 Lot# 031/422 Lot# 022/023 Lot# 017/250 Lot# 017/251 Lot# 017/252 Lot# 017/253 Lot# 017/254 Lot# 017/255

External identifiers for CCTBA

Pubchem CID90473603
IUPAC Namecarbon monoxide; cobalt; 3,3-dimethylbut-1-yne
InchI IdentifierInChI=1S/C6H10.6CO.2Co/c1-5-6(2,3)4;6*1-2;;/h1H,2-4H3;;;;;;;;

Known applications and external links

With (3,3-Dimethyl-1-butyne)dicobalt hexacarbonyl other customers often ask:

Ereztech synthesizes and sells additional CO-compounds.

To purchase (3,3-Dimethyl-1-butyne)dicobalt hexacarbonyl contact us at sales@ereztech.com