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.

引用

页码：5925 / 5928

页数：4

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