Synthesis, Structure, and Reactivity of Homodinuclear Lanthanide Complexes Bearing Salen-type Schiff-base Ligand

被引：9

作者：

Lv, Wenfeng ^{[1
]}

Wang, Yaorong ^{[1
]}

Wu, Bing ^{[1
]}

Yao, Yingming ^{[1
]}

Shen, Qi ^{[1
]}

机构：

[1] Soochow Univ, Key Lab Organ Synth Jiangsu Prov, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 2012年 / 638卷 / 7-8期

基金：

中国国家自然科学基金;

关键词：

Homodinuclear; Lanthanides; Salen; Schiff-base; Crystal structure; Polymerization; RING-OPENING POLYMERIZATION; RARE-EARTH COMPLEXES; X-RAY-STRUCTURE; EPSILON-CAPROLACTONE; YTTRIUM COMPLEXES; CRYSTAL-STRUCTURE; LACTIDE; CATALYST; COORDINATION; ALKOXIDES;

D O I：

10.1002/zaac.201200046

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Three homodinuclear lanthanide complexes [Ln2(mu-L)3] [Ln = La (1), Nd (2), Sm (3)] were synthesized by the reaction of Ln[N(SiMe3)2]3 (Ln = La, Nd, Sm) with 1.5 equiv. of the salen-type ligand N,N-bis(3, 5-di-tert-butyl-salicylidene)-1, 3-diaminobenzene (H2L) in THF at room temperature. X-ray diffraction studies revealed that the coordination arrangement around each lanthanide atom could be best described as distorted octahedral for complexes 2 and 3 and the two lanthanide metal ions are linked together by the three rigid m-phenylenediamine-based ligands. The ring-opening polymerization (ROP) of ?-caprolactone (?-CL) was carried out using the complexes 13 as catalysts. The catalytic activities of dinuclear lanthanide complexes were greatly affected by ionic radii and the increased active order is Sm < Nd < La.

引用

页码：1167 / 1172

页数：6

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