Synonym: Tri(2,4-cyclopentadienyl) yttrium, Yttrium tricyclopenta-2, 4-dienide, Yttrium tricyclopentadienide, Tris(h5-cyclopentadienyl)yttrium(III), YCp3

CAS Number 1294-07-1 | MDL Number MFCD00058706 | EC Number 215-069-4

YCp3 chemical structure

Product codeY4071
CAS number1294-07-1
Assay (purity)98%+
Metal purity99.9%-Y
Purity methodby titration: %Y=30.7-31.9
Molecular weight284.19 g/mol
Melting point296 °C (565 °F) – decomposes
Boiling point200 °C (392 °F) – sublimation
Appearanceoff-white to yellow and faint orange to orange and faint brown to brown powder
Sensitivityair, moisture
Molecular formulaC15H15Y
Linear formula(C5H5)3Y
Packagingglassware/metal containers/bubblers

Tris(cyclopentadienyl)yttrium, and for comparison Y(MeCp)3, (both with H2O as O source) was applied as a precursor for the ALD growth of cubic Y2O3 thin films on Si substrates at temperature as low as 175°C. The crystallinity, morphology, and chemical composition of the obtained Y2O3 layers were studied by XRD, AFM, and TOF-ERDA, respectively. The smoothest yttria layers were obtained at ≤250 °C with both precursors. See links below

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Safety information

Hazardous class4.3(4.1)
Packing groupII
PictogramsGHS02 GHS07
Signal wordDANGER
Hazard statementsH228-H261-H315-H319-H335
Precautionary statementsP210-P223-P231 + P232-P240-P241-P261-P264-P280-P302 + P352-P304 + P340-P305 + P351 + P338-P312-P332 + P313-P334 + P335-P337 + P313-P362-P370 + P378
Transport descriptionOrganometallic substance, solid, water-reactive, flammable Tris(cyclopentadienyl) yttrium(III)
In TSCA registryNo (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)

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Lot# 028/185

External identifiers YCp3

Pubchem CID102042434
IUPAC Namecyclopenta-1,3-diene;yttrium
InchI IdentifierInChI=1S/3C5H5.Y/c3*1-2-4-5-3-1;/h3*1-5H;

Known applications and external links

With Tris(cyclopentadienyl)yttrium(III) other customers often ask:

Ereztech synthesizes and sells additional Y-compounds.

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