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Heterobimetallic Samarium(III) and Titanium(IV) Complexes withBifunctional Catalytic Properties
Zhou, Fengying; Lin, Miaoshui; Li, Lei; Zhang, Xueqing; Li, Yahong; Zhao, Yang; Wu, Jin
2011
Source PublicationORGANOMETALLICS
Volume30Issue:6Pages:1283-1286
AbstractReaction of the bis-ligand-chelated samarium complex [Sin (Hbptd)(H(2)bptd)1 (1; H(3)bptd = (2-pyrroly1)-2,5,8-triazanon a-1,8-diene), in which a pyrrolyl ring is dangling and metal-free, with Ti(NMe2)(4) yielded the heterometallic complex [Sm(Hbptd)(THF) (bptd)Ti(NMe2)(2)] (2). Treatment of the H3bptd ligand with 1 equiv of Ti(NMe2)(4) gave the titanium amido complex [Ti(bptd)(NMe2)] (3). Complexes 2 and 2; were able to catalyze the hydroamination of phenylacetylene with 2,4-dichloroaniline and 4-methoxyaniline, and high regioselectivities were observed for the two amines. Both 1 and 2 were active catalysts for the ring-opening polymerization of epsilon-caprolactone. 2 showed higher activity for the polymerization reactions, due to a decrease in the coordination number of the samarium atom (from 9 in 1 to 8 in 2) by sharing its ligand with the titanium center. Reaction of the bis-ligand-chelated samarium complex [Sin (Hbptd)(H(2)bptd)1 (1; H(3)bptd = (2-pyrroly1)-2,5,8-triazanon a-1,8-diene), in which a pyrrolyl ring is dangling and metal-free, with Ti(NMe2)(4) yielded the heterometallic complex [Sm(Hbptd)(THF) (bptd)Ti(NMe2)(2)] (2). Treatment of the H3bptd ligand with 1 equiv of Ti(NMe2)(4) gave the titanium amido complex [Ti(bptd)(NMe2)] (3). Complexes 2 and 2; were able to catalyze the hydroamination of phenylacetylene with 2,4-dichloroaniline and 4-methoxyaniline, and high regioselectivities were observed for the two amines. Both 1 and 2 were active catalysts for the ring-opening polymerization of epsilon-caprolactone. 2 showed higher activity for the polymerization reactions, due to a decrease in the coordination number of the samarium atom (from 9 in 1 to 8 in 2) by sharing its ligand with the titanium center.
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/1881
Collection青海盐湖研究所知识仓储
Recommended Citation
GB/T 7714
Zhou, Fengying,Lin, Miaoshui,Li, Lei,et al. Heterobimetallic Samarium(III) and Titanium(IV) Complexes withBifunctional Catalytic Properties[J]. ORGANOMETALLICS,2011,30(6):1283-1286.
APA Zhou, Fengying.,Lin, Miaoshui.,Li, Lei.,Zhang, Xueqing.,Li, Yahong.,...&Wu, Jin.(2011).Heterobimetallic Samarium(III) and Titanium(IV) Complexes withBifunctional Catalytic Properties.ORGANOMETALLICS,30(6),1283-1286.
MLA Zhou, Fengying,et al."Heterobimetallic Samarium(III) and Titanium(IV) Complexes withBifunctional Catalytic Properties".ORGANOMETALLICS 30.6(2011):1283-1286.
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