136892-76-7

Basic information

• Product Name: trans-iodobis(triphenylphosphane){(trimethylsilyl)ethinyl}palladium
• CAS NO: 136892-76-7
• Molecular Weight: 855.118
• Mol File: 136892-76-7.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: trans-iodobis(triphenylphosphane){(trimethylsilyl)ethinyl}palladium(CAS DataBase Reference)
• NIST Chemistry Reference: trans-iodobis(triphenylphosphane){(trimethylsilyl)ethinyl}palladium(136892-76-7)
• EPA Substance Registry System: trans-iodobis(triphenylphosphane){(trimethylsilyl)ethinyl}palladium(136892-76-7)

Safety Data

• Hazardous Substances Data: 136892-76-7(Hazardous Substances Data)

Upstream product

• 14221-01-3 tetrakis(triphenylphosphine) palladium⁽⁰⁾ 
• 18163-47-8 iodoethynyltrimethylsilane 
• 7681-82-5 sodium iodide 

Relevant articles and documents

Steric Control of Oxidative Trimerization of Alkynyl Ligands in Trimethylphosphane Palladium Complexes

Alkynylpalladium compounds trans-PdX(CC-R)(PMe3)2 and trans-PdX(CC-R)(PBu3)2 as well as trans-PdX(CC-R)(PPh3)2 are prepared by known methods.Thermal decomposition between 120 and 160 deg C results in a selective transformation only with trimethylphosphane complexes 1, 2, 10-13, and 19.Oxidative trimerization of the alkynyl groups CC-CMe2R' and CC-(c-Hex) affording the enediynyl compounds trans-PdX(PMe3)2 and trans-PdX=C(c-Hex)>(PMe3)2 appears to be controlled by balanced steric demands of phoshorus and alkynyl substituents.The steric control is investigated by melting transformable monoalkynyl complex trans-PdI(CC-CMe2OH)(PMe3)2 (11) with non-transformable complex trans-PdI(PMe3)2 (20) to give a mixture (A) of transformed complexes with mixed substituents R.Similar results are obtained in other mixtures, when transformable PdBr(CC-SiMe3)(PMe3)2 is heated with the non transformabel complexes PdBr(PMe3)2 (12) with non-transformable PdBr(PMe3)2 (mixture C). - Key Words: Alkynes/ Palladium complexes/ Phosphane ligands