Bis(guanidinate) alkoxide complexes of lanthanides: Synthesis, structures and use in immortal and stereoselective ring-opening polymerization of cyclic esters
Bis(guanidinate) alkoxide complexes of lanthanides: Synthesis, structures and use in immortal and stereoselective ring-opening polymerization of cyclic esters
复制标题
DOI：
10.1002/chem.200800288
复制
发表时间：
2008-01-01
影响因子：
4.3
通讯作者：
Trifonov, Alexander A.
中科院分区：
文献类型：
--
作者：
Ajellal, Noureddine;Lyubov, Dmitrii M.;Trifonov, Alexander A.
合成了一系列新的双胍基烷氧基三族金属配合物[Ln{（Me_3Si）（2）NC（NiPr）（2）}（2）（OR）]（R = OtBu，Ln = Y，Nd，Sm，Lu; R = OiPr，Ln = Y，Nd，Lu）. X射线结构测定表明，双（胍基）叔丁氧基是单体配合物。异丙氧基配合物[Y{（Me_3Si）（2）NC-（NiPr）（2）}（2）（OiPr）]在溶液中缓慢分解，得到不寻常的二聚酰胺配合物[（Y-{（Me_3Si）（2）NC（NiPr）（2）}（2）{mu-N（iPr）CN}）（2）]。
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)].