Carbonyltris(triphenylphosphine)rhodium(I) hydride Chemical Properties

Melting point:

150 °C (dec.) (lit.)

Density 

1.33

vapor pressure 

0Pa at 25℃

storage temp. 

Keep in dark place,Inert atmosphere,2-8°C

solubility 

Soluble in hydrocarbons (e.g. benzene and toluene) with dissociation of phosphine ligands

form 

crystal

color 

light yellow

Sensitive 

Moisture Sensitive

Hydrolytic Sensitivity

7: reacts slowly with moisture/water

Merck 

14,9758

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

InChIKey

CEKFIOLKXHVOKA-UHFFFAOYSA-N

CAS DataBase Reference

17185-29-4(CAS DataBase Reference)

NIST Chemistry Reference

carbonyl(hydrido)tris(triphenylphosphine)rhodium(17185-29-4)

EPA Substance Registry System

Rhodium, carbonylhydrotris(triphenylphosphine)-, (TB-5-23)- (17185-29-4)

Safety Information

Hazard Codes 

T

Risk Statements 

23/24/25

Safety Statements 

36/37/39-45-36/37

RIDADR 

UN 2811 6.1/PG 2

WGK Germany 

1

F 

10-23

TSCA 

Yes

HazardClass 

4.3

PackingGroup 

III

HS Code 

28439000

MSDS

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Carbonyltris(triphenylphosphine)rhodium(I) hydride Usage And Synthesis

Chemical Properties

Carbonylhydrido-tris(triphenylphosphine)rhodium(I), carbonyl-tris(triphenylphosphine)rhodium(I) hydride, forms yellow crystals that are stable in air, mp 172 – 174℃ in a closed nitrogen-filled capillary. It is readily soluble in benzene, chloroform, and dichloromethane. In solution, one phosphine ligand is readily lost by dissociation to give a 16-electron complex that is an active catalyst for the hydrogenation of alkenes and for hydroformylation.

Uses

Hydrogenation, hydrosilation, isomerization, carbonylation, hydroformylation, oxidation

Uses

Carbonylhydrido-tris(triphenylphosphine)rhodium(I) is used in industry for the hydroformylation of alkenes by the low pressure oxo (LPO) process developed by Union Carbide, Davy Power Gas, and Johnson Matthey. The reaction takes place rapidly at 25℃ giving a product in which the ratio of n- to iso-aldehydes is very favorable (ca. 20 : 1), a much higher ratio than can be obtained with cobalt catalysts.

Production Methods

Carbonyltris(triphenylphosphine)rhodium(I) hydride is obtained by the reaction of a solution of RhCl3.3 H2O in alcoholic alkali with aqueous formaldehyde (the carbon monoxide source) and an excess of triphenyl phosphine. The commercial product is a microcrystalline powder with a purity of 97 % (Degussa).

Carbonyltris(triphenylphosphine)rhodium(I) hydride(17185-29-4)Related Product Information

• Terphenyl, hydrogenated
• Lithium Triethylborohydride
• Sodium triacetoxyborohydride
• Tris(triphenylphosphine)rhodiu
• Sodium hydride
• Tributyltin Hydride
• Triphenylphosphine
• Rhodium
• Ruthenium dioxide
• Iridium(IV) chloride
• Tris(triphenylphosphine)ruthenium(II) chloride
• Chloroiridic acid
• Hydridotetrakis(triphenylphosphine)rhodium(I)
• Rhodium triiodide
• Ruthenium tetroxide
• Dipotassium hexachloroiridate
• Cyclopentadienyl manganese tricarbonyl
• Carbonyltris(triphenylphosphine)rhodium(I) hydride