Amine−Phenolate Ligands in Niobium Chemistry: π-Interactions Probed by an Ancillary Alkyne Ligand
作者:Emmanuelle Despagnet-Ayoub、Sophie Schigand、Laure Vendier、Michel Etienne
DOI:10.1021/om801139m
日期:2009.4.13
A series of alkyne niobium complexes based on tetrapodal amine bis(phenolato) ligands NbCl[ONNO]R(MeCCMe) ([ONNO]R = N(CH2CH2NMe2)2(CH2C6H2-3,5-R2-2-O), R = H, Me) (4), and tripodal amine phenolato ligands NbCl2[ONN]Me(MeCCMe) ([ONN]Me = NMe(CH2CH2NMe2)(CH2C6H2-3,5-Me2-2-O)) (5) and NbCl2[ONOO]R(MeCCMe) ([ONOO]R = N(CH2CH2OMe)2(CH2C6H2-3,5-R2-2-O)) (R = tBu, Me) (6), have been synthesized and characterized
基于四足胺双(酚基)配体NbCl [ONNO] R(MeCCMe)的一系列炔铌配合物([ONNO] R = N(CH 2 CH 2 NMe 2)2(CH 2 C 6 H 2 -3,5 -R 2 -2-O),R = H,Me)(4)和三足胺酚配体NbCl 2 [ONN] Me(MeCCMe)([ONN] Me = NMe(CH 2 CH 2 NMe 2)(CH 2 C 6 H 2 -3,5-Me 2 -2-O))(5)和NbCl 2 [ONOO] R(MeCCMe)([ONOO] R = N(CH 2 CH 2 OMe)2(CH 2 C 6 H 2 -3,5-R 2 -2-O))(R = t Bu,Me)(6),已经通过光谱学和X射线研究合成并表征。对于配合物4和5,已经获得,分离并充分表征了炔烃位置不同的两个异构体。炔配体是反式至侧臂的NMe 2基团或三脚架的氮原子。4和的甲基衍生物参照图5,已经分别合成了NbMe