Ligand Influence over the Formation of Dinuclear [2+2] versus Trinuclear [3+3] Cu<sup>I</sup>Schiff Base Macrocyclic Complexes
作者:Arnau Arbuse、Sukanta Mandal、Somnath Maji、Ma Angeles Martínez、Xavier Fontrodona、Diana Utz、Frank W. Heinemann、Sandra Kisslinger、Siegfried Schindler、Xavier Sala、Antoni Llobet
DOI:10.1021/ic102185y
日期:2011.8
reaction of the [2+2] macrocyclic Schiff bases with CuI generates the corresponding dinuclear CuI complexes [Cu2(L1)]2+, 12+; [Cu2(L2)(CH3CN)2]2+, 22+; and [Cu2(L3)(CH3CN)2]2+, 32+, together with their trinuclear CuI homologues [Cu3(L4)]3+, 43+; [Cu3(L5)(CH3CN)3]3+, 53+; and [Cu3(L6)(CH3CN)3]3+, 63+, where the [2+2] ligand has undergone an expansion to the corresponding [3+3] Schiff base that is denoted
报道了基于间苯二醛和相应的三胺在中心N原子上的[2 + 2]缩合反应,制备了三个带有侧链的新大环配体,并对其进行了表征。这些新的大环配体都不会在亚胺水解的基础上进行任何平衡反应,以至少在环糊精中生成[1 + 1]大环或更高的低聚化合物,例如[3 + 3],[4 + 4]等。时间的天数。这表明新产生的亚胺键的稳定性。与之形成鲜明对比的是,[2 + 2]大环席夫碱与Cu I的反应生成了相应的双核Cu I络合物[Cu 2(L 1)] 2 +,1 2+ ; [铜2(L 2)(CH 3 CN)2 ] 2 +,2 2+ ; 和[Cu 2(L 3)(CH 3 CN)2 ] 2 +,3 2+,以及它们的三核Cu I同系物[Cu 3(L 4)] 3+,4 3+;[Cu 3(L 5)(CH 3 CN)3 ] 3+,5 3+ ; 和[Cu 3(L 6)(CH3 CN)3 ] 3+,6 3+,其中[2 + 2]配体已扩展为相应的[3