Chlorobis(ethylene)rhodium (I) dimer Chemical Properties

storage temp. 

-20°C

solubility 

Chloroform (Slightly, Heated, Sonicated), DMSO (Slightly, Heated, Sonicated), Me

form 

Crystalline Powder or Chunks

color 

Rust

Water Solubility 

Sparingly soluble in ethanol, acetone, dioxane, chloroform and dichloromethane. Insoluble in water.

Sensitive 

Air Sensitive

Exposure limits

ACGIH: TWA 0.01 mg/m3; TWA 1 mg/m3
NIOSH: IDLH 2 mg/m3; IDLH 100 mg/m3; TWA 0.001 mg/m3; TWA 0.1 mg/m3

Stability:

Air Sensitive

InChI

InChI=1S/4C2H4.2ClH.2Rh/c4*1-2;;;;/h4*1-2H2;2*1H;;/q;;;;;;2*+1/p-2

InChIKey

OOQJCPOXJFCGCR-UHFFFAOYSA-L

SMILES

C=C.C=C.C=C.C=C.Cl[Rh].Cl[Rh]

Safety Information

Hazard Codes 

Xn

Risk Statements 

20/21/22-36/37/38

Safety Statements 

24/25

WGK Germany 

3

TSCA 

No

HS Code 

28439090

Storage Class

11 - Combustible Solids

Hazard Classifications

Eye Irrit. 2

MSDS

• Language:English Provider:Chlorobis(ethylene)rhodium (I) dimer
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Chlorobis(ethylene)rhodium (I) dimer Usage And Synthesis

Chemical Properties

red-brown powder

Uses

Chlorobis(ethylene)rhodium(I) dimer is used as a precursor to rhodium(I) norbornadiene catalyst, which is used in an asymmetric 1,4-addition of arylboronic acids to cyclic enones. Further, it serves as an important organic intermediate. It catalyzes the dimerization of ethylene to 1-butene. It is also used in the preparation of homogeneous catalysts.

Uses

Precursor to Rh(I) norbornadiene catalyst used in an asymmetric 1,4-addition of arylboronic acids to cyclic enones.

reaction suitability

core: rhodium
reagent type: catalyst

Synthesis

The synthesis of di(vinyl)chlororhodium dimers was first reported by Cramer, Richard in Inorganic Chemistry, 1,722-3, where they dissolved RhCl3-(H2O)X in methanol and then passed it through ethylene gave an orange-red powder product in about 70% yield. Since then Inorganic Syntheses, 28, 86-8 reported in the literature. Inorganic Syntheses, 28,86-8, they reported their improved method, in which the product was filtered out after the first passage of ethylene, and the acidity was adjusted by the addition of sodium hydroxide before the second passage of ethylene from the mother liquor, and the total amount was reduced to about 70%. Sodium hydroxide was added to the mother liquor before the second passage of ethylene to adjust the acidity, increasing the total yield to 75% and the reaction time to more than 7 hours. People mostly synthesize di(ethylene)chlororhodium dimer by this method.

Chlorobis(ethylene)rhodium (I) dimer(12081-16-2)Related Product Information

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• CHLORO(1,5-HEXADIENE)RHODIUM(I) DIMER
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• Chlorobis(ethylene)rhodium (I) dimer