Synthesis of salicylaldiminato-functionalized N-heterocyclic carbene complex of nickel(II) and its catalytic activity for styrene polymerization

被引：97
作者：
Li, WF [1 ]
Sun, HM [1 ]
Chen, MZ [1 ]
Wang, ZG [1 ]
Hu, DM [1 ]
Shen, Q [1 ]
Zhang, Y [1 ]
机构：
[1] Suzhou Univ, Coll Chem & Chem Engn, Key Lab Organ Synth, Suzhou 215123, Peoples R China
来源：
ORGANOMETALLICS | 2005年 / 24卷 / 24期
关键词：
D O I：
10.1021/om050612y
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
novel potentially tridentate N-heterocyclic carbene (NHC) precursor, anionic sali-cylaldimine-functionalized imidazolium bromide, [3,5-Bu-t(2)-2-(HO)C6H2CH=NCH2CH2(CH-{(NCHCHNPr)-Pr-i})Br] (HL center dot HBr, 2), was designed. The reaction of in situ-generated monoanionic tridentate salicylaldiminato-functionalized NHC LNa with Ni(PPh3)(2)Br-2 affords a novel monoligand Ni(H) bromide, [3,5-Bu-t(2)-2-(O)C6H2CH=NCH2CH2(C{(NCHCHNPr)-Pr-i})]NiBr (LNiBr, 3), in good yield. Complex 3 can also be synthesized by the direct reaction of nickelocene (CP)(2)Ni or bis-indenyl Ni(II) complex (Ind)(2)Ni with 2 in high yield via the cyclopentadiene or indene elimination reaction, respectively. Complex 3 has been fully characterized including X-ray structural determination. Preliminary study indicated that 3 shows good catalytic activity for the polymerization of styrene in the presence of NaBPh4 at 80 degrees C.
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页码：5925 / 5928
页数：4
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