Transition metal induced derivatisations resulting in novel coordination behaviour of bis(oxamato) ligands
作者:Tobias Rüffer、Björn Bräuer、François Eya'ane Meva、Bernhard Walfort
DOI:10.1039/b804382e
日期:——
2-d]-(imidazole-2-carboxylato)-6,11-dione) has been obtained. The crystal structures of and have been determined, displaying that the Ni(II) ion of is eta4(kappa2N,kappa2O) coordinated by the [1,2-acbo]4- ligand. The Cu(II) ion of is coordinated by two [aibo]2- ligands, giving rise to an approximately square-planar trans-bis(aibo-N,O) arrangement. Using the symmetric diethyl N,N'-4,5-dinitro-o-phenylene-bis(oxamate)
这表明Ni的(II)离子是由[1,2-acbo] 4-配体配位的eta4(kappa2N,kappa2O)。的Cu(II)离子由两个[aibo] 2-配体配位,从而产生近似正方形平面的反式双(aibo-N,O)排列。使用具有强吸电子NO 2-基团的对称N,N'-4,5-二硝基-邻-亚苯基-双(草酸酯)二乙基二氧杂酸酯(niboH2Et2),在其他相同的反应条件下导致生成双(草酸酯)配合物[ nBu4N] 2 [Ni(nibo)](),其中在Cu(II)情况下,衍生物[nBu4N] 2 [Cu(niqo)2]()(niqo = 7,8-二硝基-2,3-喹喔啉代纳托)已获得。已确定的晶体结构,确保的Ni(II)离子是由[nibo] 4-配体配位的eta(4)(kappa2N,kappa2O)。的Cu(II)离子由两个[Niqo] 2-配体的四个氧原子配位,