Polymerization of styrene by Novel Ni ( Ⅱ)- and Pd ( Ⅱ)-based complexes

• 来源期刊: 中国化学(英文版)
• 年，卷（期）: 2000,（6）
• 所属期刊栏目: Articles
• 页码范围: 896-899
• 页数: 4页
• 语种: 英文

摘要

The catalvtic activities of nine neutral nickel and palladiun σ-acety lide complexes [M≡(C≡CR)2(PR＇3)2, M=Ni, Pd; R = Ph, CH2OH, CH2OOCH3, CH2OOCPh, CH2OOPhOH- o; R＇=Ph, Bu] are compared. Among them,Ni(C≡CPh)2-(PBu3)2 shows the highest catalytic activity and gives the polystyrene with high molecular weight (Mw= 188800) and a syndio-rich microstructure. The catalytic behavior of transition meta l acetylides is related to metal, phosph ine, and alkynyl ligands bonded to the metal atoms.