Vaska's Complex

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Linear Formula:


MDL Number:


EC No.:



(2N) 99% Carbonylchlorobis(triphenylphosphine)iridium(I)
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(3N) 99.9% Carbonylchlorobis(triphenylphosphine)iridium(I)
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(4N) 99.99% Carbonylchlorobis(triphenylphosphine)iridium(I)
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(5N) 99.999% Carbonylchlorobis(triphenylphosphine)iridium(I)
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Carbonylchlorobis(triphenylphosphine)iridium(I) Properties (Theoretical)

Compound Formula C37H30ClIrOP2
Molecular Weight 780.251
Appearance Yellow crystalline solid
Melting Point 215°C
Boiling Point 360 °C
Density N/A
Solubility in H2O Insoluble
Exact Mass 780.108968
Monoisotopic Mass 780.108968
Charge -1

Carbonylchlorobis(triphenylphosphine)iridium(I) Health & Safety Information

Signal Word Danger
Hazard Statements H301+H311+H331-H315-H319
Hazard Codes T
Precautionary Statements P261-P280h-P304+P340-P311a-P405-P501a
Risk Codes 20/21/22
Safety Statements 4-9-20-36/37/39-45-60
RTECS Number N/A
Transport Information UN2811 6.1/PG III
WGK Germany N/A
GHS Pictograms

About Carbonylchlorobis(triphenylphosphine)iridium(I)

Carbonylchlorobis(triphenylphosphine)iridium(I) is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.

Carbonylchlorobis(triphenylphosphine)iridium(I) Synonyms

Iridium(I) bis(triphenylphosphine)carbonyl chloride, Bis(triphenylphosphine)iridium(I) Carbonyl Chloride, Carbonylbis(triphenylphosphine)iridium(I) Chloride, (SP-4-1)-carbonylchloridobis(triphenylphosphane)iridium(I), Chloroiridium; methanone; triphenylphosphane, Bis(triphenylphosphine)chlorocarbonyliridium(I), Bis(triphenylphosphine)iridiumcarbonyl chloride, Iridium, carbonylchlorobis(triphenylphosphine)-, Chlorocarbonylbis(triphenylphosphine)iridium, Vaska's compound

Chemical Identifiers

Linear Formula IrCl(CO)[P(C6H5)3]2
MDL Number MFCD00009590
EC No. 238-941-6
Pubchem CID 84678
IUPAC Name carbon monoxide; iridium; triphenylphosphane; chloride
SMILES [C-]#[O+].C1=CC=C(C=C1)P(C2=CC=CC=C2)C3=CC=CC=C3.C1=CC=C(C=C1)P(C2=CC=CC=C2)C3=CC=CC=C3.[Cl-].[Ir]
InchI Identifier InChI=1S/2C18H15P.CO.ClH.Ir/c2*1-4-10-16(11-5-1)19(17-12-6-2-7-13-17)18-14-8-3-9-15-18;1-2;;/h2*1-15H;;1H;/p-1

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements


Chlorine is a Block P, Group 17, Period 3 element. Its electron configuration is [Ne]3s23p5. The chlorine atom has a covalent radius of 102±4 pm and its Van der Waals radius is 175 pm. Chlorine ModelIn its elemental form, chlorine is a yellow-green gas. Chlorine is the second lightest halogen after fluorine. It has the third highest electronegativity and the highest electron affinity of all elements, making it a strong oxidizing agent. It is rarely found by itself in nature. Chlorine was discovered and first isolated by Carl Wilhelm Scheele in 1774. It was first recognized as an element by Humphry Davy in 1808.


See more Iridium products. Iridium (atomic symbol: Ir, atomic number: 77) is a Block D, Group 9, Period 6 element with an atomic weight of 192.217. The number of electrons in each of iridium's shells is [2, 8, 18, 32, 15, 2] and its electron configuration is [Xe] 4f14 5d7 6s2. Iridium Bohr ModelThe iridium atom has a radius of 136 pm and a Van der Waals radius of 202 pm. Iridium was discovered and first isolated by Smithson Tennant in 1803. In its elemental form, Iridium has a silvery white appearance. Iridium is a member of the platinum group of metals.Elemental Iridium It is the most corrosion resistant metal known and is the second-densest element (after osmium). It will not react with any acid and can only be attacked by certain molten salts, such as molten sodium chloride. Iridium is found as an uncombined element and in iridium-osmium alloys. Iridium's name is derived from the Greek goddess Iris, personification of the rainbow, on account of the striking and diverse colors of its salts.


Phosphorus Bohr ModelSee more Phosphorus products. Phosphorus (atomic symbol: P, atomic number: 15) is a Block P, Group 15, Period 3 element. The number of electrons in each of Phosphorus's shells is 2, 8, 5 and its electronic configuration is [Ne] 3s2 3p3. The phosphorus atom has a radius of and its Van der Waals radius is Phosphorus is a highly-reactive non-metallic element (sometimes considered a metalloid) with two primary allotropes, white phosphorus and red phosphorus its black flaky appearance is similar to graphitic carbon. Compound forms of phosphorus include phosphates and phosphides. Phosphorous was first recognized as an element by Hennig Brand in 1669 its name (phosphorus mirabilis, or "bearer of light") was inspired from the brilliant glow emitted by its distillation.


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