Calix[4]arene supported group 5 imido complexes
Calix[4]arene supported group 5 imido complexes
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杯[4]芳烃支持的第 5 族酰亚胺配合物
DOI：
10.1016/j.ica.2006.06.029
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发表时间：
2006
影响因子：
2.8
通讯作者：
U. Radius
中科院分区：
文献类型：
--
作者：
S. Dürr;B. Bechlars;U. Radius
亚胺酰氯[V（NR）Cl 3]（R=Ph 1，Tol 2，tBu 3）与杯[4]芳烃甲醚H3 Mecalix反应，意外地形成了结构特征为V（IV）的配合物[VCl（Mecalix）]（4）. [V（NR）Cl 3]（R =Ph 1，Tol 2，tBu 3）与杯[4]芳烃醚的三锂盐或三钠盐反应，合成了[V（NR）（Mecalix）]（R =Ph 7，Tol 8，tBu 9）型杯[4]芳烃甲醚稳定的酰亚胺配合物。锂盐[{Li 3（Mecalix）}2]（5）是固态的二聚体，其中两个单体三阴离子通过锂阳离子桥接。酰亚胺配合物[M（NR）（Mecalix）]（M=Nb：R=tBu，12，R=Tol 13，R=Mes 14，R=Dipp 15; M=Ta：R=tBu 16，R=Tol 17）（Tol=4-C6H4Me，Mes= 2，6-C6H3Me2; Dipp=2，6-C6 H3 iPr 2）由结构表征的[NbCl 2（Mecalix）]（10）和先前已知的[TaCl 2（Mecalix）]（11）制备通过与两当量的适当金属化的（Li，K）伯胺反应。13和15的分子结构证实了这些络合物的单核性质。
The reaction of imidoyl chlorides [V(NR)Cl3] (R=Ph 1, Tol 2, tBu 3) and calix[4]arene methyl ether H3Mecalix unexpectedly leads to the formation of the structurally characterized vanadium (IV) complex [VCl(Mecalix)] (4). Calix[4]arene methyl ether stabilized imido complexes of the type [V(NR)(Mecalix)] (R=Ph 7, Tol 8, tBu 9) were afforded from the reaction of [V(NR)Cl3] (R=Ph 1, Tol 2, tBu 3) and the tris(lithium) or tris(sodium) salt of the calix[4]arene ether. The lithium salt [{Li3(Mecalix)}2] (5) is a dimer in the solid state, in which two monomeric trianions are bridged by lithium cations. Imido complexes [M(NR)(Mecalix)] (M=Nb: R=tBu, 12, R=Tol 13, R=Mes 14, R=Dipp 15; M=Ta: R=tBu 16, R=Tol 17) (Tol=4-C6H4Me, Mes=2,6-C6H3Me2; Dipp=2,6-C6H3iPr2) have been prepared from structurally characterized [NbCl2(Mecalix)] (10) and previously known [TaCl2(Mecalix)] (11) via reaction with two equivalents of the appropriately metallated (Li, K) primary amine. The molecular structures of 13 and 15 confirm the mononuclear nature of these complexes.