Rhodium carbonyl chloride Chemical Properties

Melting point:

120-125 °C (dec.)(lit.)

storage temp. 

2-8°C

solubility 

It is soluble in organic or non-aqueous solvent.

form 

crystal

color 

red

Water Solubility 

soluble in most organic solvents; insoluble aliphatic hydrocarbons [MER06]

Sensitive 

Air & Moisture Sensitive

Merck 

14,8187

Exposure limits

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

InChI

InChI=1S/4CO.2Cl.2Rh/c4*1-2;;;;/q;;;;2*+1;2*-1

InChIKey

ODYPMWFHWPMOKS-UHFFFAOYSA-N

SMILES

[Cl+]1[Rh-][Cl+][Rh-]1.[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-]

CAS DataBase Reference

14523-22-9(CAS DataBase Reference)

NIST Chemistry Reference

Dirhodium tetracarbonyl dichloride(14523-22-9)

Safety Information

Hazard Codes 

T

Risk Statements 

36/38-25

Safety Statements 

22-24/25-37/39-28A-26-15

RIDADR 

UN3466

WGK Germany 

3

F 

10-21-23

TSCA 

No

HazardClass 

6.1

PackingGroup 

III

HS Code 

28439000

Storage Class

11 - Combustible Solids

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

Rhodium carbonyl chloride Usage And Synthesis

Reaction

Catalyst used for a wide range of cycloadditions reactions.

Chemical Properties

red to brownish crystals, crystalline powder or

Uses

Rhodium Carbonyl Chloride is a reagent for rhodium-catalyzed [4+2+1] cycloaddition of in situ generated ene/yne-ene-allenes and carbon monoxide to produce [4+2+1] cycloadducts

Uses

Catalyst for organic reactions.

reaction suitability

core: rhodium
reagent type: catalyst

Synthesis

Synthesis of tetracarbonyl dichlorodirhodium, RhCl3-3H2O+CO??Rh2Cl2(CO)4+COCl2

Appropriate amount of rhodium(II) chloride trihydrate crystals was ground into a fine powder of 30-100 mesh with a mortar and pestle, and it was uniformly spread on a sand core in a glass reaction tube, and the length-to-diameter ratio of the said glass reaction tube was generally required to be ??15, e.g., the length was 30 cm and the diameter was 2 cm; a gas source of carbon monoxide was connected to the said glass reaction tube, and then the lower part of the glass reaction tube was immersed into a heated oil source at room temperature for 5-10 minutes to drive out the residual air in the glass reaction tube. The glass reaction tube is connected to a carbon monoxide gas source, first ventilated at room temperature for 5-10 minutes to drive out the residual air in the glass reaction tube, and then the lower end of the glass reaction tube is immersed in a heated oil bath, and the liquid surface of the oil bath outside the glass reaction tube is higher than the reaction layer on said sand core; continuously ventilated with the carbon monoxide gas, the said rhodium(III) chloride trihydrate crystallized powder is gradually sublimated, and there are gradually orange-red needle-like crystals condensing on the inner pipe wall of said glass reaction tube (the mill plug in the upper port of the glass reaction tube can be opened at intervals of time (10-20 minutes) as required, and the water droplets on the inner pipe wall of the glass reaction tube can be sucked dry with absorbent cotton); when the reaction is finished, there should be almost no reactant residue on the said sand core, and at this time the carbon monoxide gas source can be shut off and the glass reaction tube can be taken out from the oil bath, and the mill plug can be opened, and the water drops on the inner pipe wall of the glass reaction tube can be sucked up with the scraping spoon. The orange-red needle-like crystals on the wall of the glass reaction tube can be scraped off and collected, and the tetracarbonyldichlorodirhodium can be obtained, and its melting point is 124??.

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