(Pyrazol-1-ylmethyl)pyridine palladium complexes: Synthesis, molecular structures, and activation of small molecules

被引：22
|
作者：
Ojwach, Stephen O. [1 ]
Guzei, Ilia A. [2 ]
Darkwa, J. [1 ]
机构：
[1] Univ Johannesburg, Dept Chem, ZA-2006 Auckland Pk, South Africa
[2] Univ Wisconsin, Dept Chem, Madison, WI 53706 USA
来源：
JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2009年 / 694卷 / 9-10期
基金：
新加坡国家研究基金会;
关键词：
Synthesis; Molecular structures; (Pyrazol-1-yl)pyridine palladium complexes; Ethylene polymerization; Insertion sulfur dioxide and carbon monoxide; METAL-CARBON BONDS; CO/STYRENE COPOLYMERIZATION; CATALYSTS; ETHYLENE; LIGANDS; POLYMERIZATION; INSERTION; OLEFINS; NICKEL(II); REACTIVITY;
D O I：
10.1016/j.jorganchem.2008.12.043
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Reactions of 2-(3,5-dimethylpyrazol-1-ylmethyl)pyridine (L1) and 2-(3,5-di-tert-butylpyrazol-1-ylmethyl)pyridine (L2) with either [PdClMe(COD)] or [PdCl2(COD)] gave the mononuclear palladium complexes [PdCl2(L1)] (1), [PdClMe(L1)] (2) [PdCl2(L2)] (3) and [PdClMe(L2)] (4) in good yields. All compounds were characterized by NMR spectrometry, mass spectrometry, elemental analyses and also by single crystal X-ray crystallography for complexes 1, 3, and 4. The reaction of 2 with NaBAr4 in NCMe gave the salt, [[PdMeNCMe(L3)] BAr4 (5), in good yield. This salt was used as a catalyst to oligomerize ethylene at high pressures to branched polyethylene, but catalytic activity was low. The reaction of 2 with SO2 and CO formed the respective insertion products [PdClS(O)(2)Me(L1)] (6) and [PdClC(O) Me(L1)] (7). (C) 2008 Elsevier B.V. All rights reserved.
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页码：1393 / 1399
页数：7
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