ICCAS OpenIR
Bis(imino)aryl NCN Pincer Aluminum and Zinc Complexes: Synthesis, Characterization, and Catalysis on L-Lactide Polymerization
Liu, Zhizhou1; Gao, Wei1; Zhang, Jingshun1; Cui, Dongmei2; Wu, Qiaolin1; Mu, Ying1
2010-11-22
Source PublicationORGANOMETALLICS
ISSN0276-7333
Volume29Issue:22Pages:5783-5790
AbstractReactions of 2,6-(ArN=CH)(2)C6H3Li with AlEt2Cl afford a number of NCN pincer aluminum complexes (2,6-(ArN=CH)(2)C6H3)AlEt2 (Ar = Ph (1), 2,6-Me2C6H3 (2), 2,6-Et2C6H3 (3), 2,6-(Pr2C6H3)-Pr-i (4)). Similar reactions of 2,6-(ArN=CH)(2)C6H3Li with ZnEtCl produce bisligated zinc complexes (2,6-(ArN=CH)(2)C6H3)(2)Zn (Ar = ph (5), 2,6-Me2C6H3 (6), 2,6-Et2C6H3 (7)) and monoligated NCN pincer zinc complex (2,6-(ArN=CH)(2)C6H3)ZnEt (Ar = 2,6-(Pr2C6H3)-Pr-i (8)). All complexes were characterized by H-1 and C-13 NMR spectroscopy, and the molecular structures of complexes 3, 4, 6, 7, and 8 were determined by X-ray crystallography. The X-ray diffraction analysis reveals that both complexes 3 and 4 adopt a distorted trigonal-bipyramidal geometry around the aluminum central metal with three carbon atoms in the equator and the two imine nitrogen atoms in the apical positions. Complexes 6 and 7 adopt a distorted tetrahedral geometry around their zinc metal centers, while complex 8 adopts a square-planar geometry around its metal center. All these Al and Zn complexes are efficient initiators for L-lactide ring-opening polymerization in the presence of benzyl alcohol, and the polymerization reaction takes place in an immortal manner. The productivity of the Zn complexes is generally higher than that of the Al complexes under similar conditions.
DOI10.1021/om100344p
Indexed BySCI ; IC
Language英语
WOS IDWOS:000284290600015
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:62[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/70468
Collection中国科学院化学研究所
Corresponding AuthorGao, Wei
Affiliation1.Jilin Univ, Sch Chem, State Key Lab Supramol Struct & Mat, Changchun 130012, Peoples R China
2.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
Recommended Citation
GB/T 7714
Liu, Zhizhou,Gao, Wei,Zhang, Jingshun,et al. Bis(imino)aryl NCN Pincer Aluminum and Zinc Complexes: Synthesis, Characterization, and Catalysis on L-Lactide Polymerization[J]. ORGANOMETALLICS,2010,29(22):5783-5790.
APA Liu, Zhizhou,Gao, Wei,Zhang, Jingshun,Cui, Dongmei,Wu, Qiaolin,&Mu, Ying.(2010).Bis(imino)aryl NCN Pincer Aluminum and Zinc Complexes: Synthesis, Characterization, and Catalysis on L-Lactide Polymerization.ORGANOMETALLICS,29(22),5783-5790.
MLA Liu, Zhizhou,et al."Bis(imino)aryl NCN Pincer Aluminum and Zinc Complexes: Synthesis, Characterization, and Catalysis on L-Lactide Polymerization".ORGANOMETALLICS 29.22(2010):5783-5790.
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