Bis(guanidinate) alkoxide complexes of lanthanides: Synthesis, structures and use in immortal and stereoselective ring-opening polymerization of cyclic esters

被引：158

作者：

Ajellal, Noureddine ^{[1
]}

Lyubov, Dmitrii M. ^{[2
]}

Sinenkov, Mikhail A. ^{[2
]}

Fukin, Georgii K. ^{[2
]}

Cherkasov, Anton V. ^{[2
]}

Thomas, Christophe M. ^{[1
]}

Carpentier, Jean-Francois ^{[1
]}

Trifonov, Alexander A. ^{[2
]}

机构：

[1] Univ Rennes 1, CNRS, UMR Sci Chim Rennes 6226, F-35042 Rennes, France

[2] Russian Acad Sci, Inst Organomet Chem, Nizhnii Novgorod 603950, Russia

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2008年 / 14卷 / 18期

关键词：

guanidinate ligands; lactides; lanthanides; polymerization; ring-opening polymerization;

D O I：

10.1002/chem.200800288

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A series of new bis(guanidinate) alkoxide Group 3 metal complexes [Ln{(Me3Si)(2)NC(NiPr)(2)}(2)(OR)] (R = OtBu, Ln = Y, Nd, Sm, Lu; R = OiPr, Ln = Y, Nd, Lu) has been synthesized. X-ray structural determinations revealed that bis(guanidinate) tert-butoxides are monomeric complexes. The isopropoxide complex [Y{(Me3Si)(2)NC-(NiPr)(2)}(2)(OiPr)] undergoes slow decomposition in solution, to afford the unusual dimeric amido complex [(Y-{(Me3Si)(2)NC(NiPr)(2)}(2){mu-N(iPr)C N})(2)].

引用

页码：5440 / 5448

页数：9

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