Catalytic copolymerization of CO and ethylene with a charge neutral palladium(II) zwitterion

Connie C. Lu; Jonas C. Peters

doi:10.1021/ja017011s

Catalytic copolymerization of CO and ethylene with a charge neutral palladium(II) zwitterion

Connie C. Lu, Jonas C. Peters

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Abstract

The synthesis of a zwitterionic Pd(II) complex supported by an anionic bis(phosphino)borate ligand, Ph₂B(CH₂PPh₂)₂ (abbreviated as [Ph₂BP₂]), is reported. The new complex, [Ph₂BP₂]PdMe(THF), is active for CO and ethylene copolymerization. The copolymerization activity and polyketone molecular weight for the neutral, zwitterionic system are compared with those for the cationic systems [R₂E(CH₂PPh₂)₂PdMe(THF)][B(C₆F₅)₄] where ER₂ = SiPh₂ and CH₂. Surprisingly, the more electron rich zwitterionic system is a catalyst of activity comparable to that of the more conventional cationic systems.

Original language	English (US)
Pages (from-to)	5272-5273
Number of pages	2
Journal	Journal of the American Chemical Society
Volume	124
Issue number	19
DOIs	https://doi.org/10.1021/ja017011s
State	Published - May 15 2002
Externally published	Yes

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title = "Catalytic copolymerization of CO and ethylene with a charge neutral palladium(II) zwitterion",

abstract = "The synthesis of a zwitterionic Pd(II) complex supported by an anionic bis(phosphino)borate ligand, Ph2B(CH2PPh2)2 (abbreviated as [Ph2BP2]), is reported. The new complex, [Ph2BP2]PdMe(THF), is active for CO and ethylene copolymerization. The copolymerization activity and polyketone molecular weight for the neutral, zwitterionic system are compared with those for the cationic systems [R2E(CH2PPh2)2PdMe(THF)][B(C6F5)4] where ER2 = SiPh2 and CH2. Surprisingly, the more electron rich zwitterionic system is a catalyst of activity comparable to that of the more conventional cationic systems.",

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T1 - Catalytic copolymerization of CO and ethylene with a charge neutral palladium(II) zwitterion

AU - Lu, Connie C.

AU - Peters, Jonas C.

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N2 - The synthesis of a zwitterionic Pd(II) complex supported by an anionic bis(phosphino)borate ligand, Ph2B(CH2PPh2)2 (abbreviated as [Ph2BP2]), is reported. The new complex, [Ph2BP2]PdMe(THF), is active for CO and ethylene copolymerization. The copolymerization activity and polyketone molecular weight for the neutral, zwitterionic system are compared with those for the cationic systems [R2E(CH2PPh2)2PdMe(THF)][B(C6F5)4] where ER2 = SiPh2 and CH2. Surprisingly, the more electron rich zwitterionic system is a catalyst of activity comparable to that of the more conventional cationic systems.

AB - The synthesis of a zwitterionic Pd(II) complex supported by an anionic bis(phosphino)borate ligand, Ph2B(CH2PPh2)2 (abbreviated as [Ph2BP2]), is reported. The new complex, [Ph2BP2]PdMe(THF), is active for CO and ethylene copolymerization. The copolymerization activity and polyketone molecular weight for the neutral, zwitterionic system are compared with those for the cationic systems [R2E(CH2PPh2)2PdMe(THF)][B(C6F5)4] where ER2 = SiPh2 and CH2. Surprisingly, the more electron rich zwitterionic system is a catalyst of activity comparable to that of the more conventional cationic systems.

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Catalytic copolymerization of CO and ethylene with a charge neutral palladium(II) zwitterion

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