摘要
Dinuclear nickel(II) and palladium(II) complexes with Schiff-base ligands (derived form salicylaldehyde condensed with 2-amino-1-alcohols or from 2-hydroxy-5-methylisophthaldialdehyde and pyridine-2-carboxaldehyde condensed with semicarbazide, thiosemicarbazide, carbonodihydrazide, or thiocarbonodihydrazide) can be activated with the co-catalysts methylalumoxane (MAO) or tris(pentafluorophenyl)borane/triethylaluminium, B (C6F 5)3/AlEt3 for the vinyl/addition polymerization of norbornene to reach activities of up to 2.4·107 g polymer/mol(metal)·h (molar ratios metal:AlMAO = 1:100, metal:borane:AlEt3 = 1:9:10). Polymer characterization by GPC gave molar mass distributions of Mw/Mn ≈ 2, thereby indicating a coordination polymerization with a single-site character of the active species.
源语言 | 英语 |
---|---|
页(从-至) | 1152-1164 |
页数 | 13 |
期刊 | Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences |
卷 | 58 |
期 | 12 |
DOI | |
出版状态 | 已出版 - 12月 2003 |
已对外发布 | 是 |