Copper(II) complexes of optically active binucleating ligands, N,N′-bis[2-pyridylmethyl and 2-(2-pyridyl)ethyl]-(S)-malamide and related amides
作者:Kiyoko Nonoyama、Wasuke Mori、Kiyohiko Nakajima、Matsuo Nonoyama
DOI:10.1016/s0277-5387(97)00143-5
日期:1997.8
N,N′-Bis(2-pyridylmethyl)-3-hydroxyglutaramide [abbreviated as H3(pmg)], optically active N,N′-bis2-pyridylmethyl and 2-(2-pyridyl)ethyl}-(S)-malamide [H3(lpm) and H3(lpe), respectively], and the optically inactive analogues [H3(ppm) and H3(pem)] gave dimeric copper(II) complexes [Cu2XL]·nH2O (L = 1pm, 1pe, pmm, pem, and pmg; X = an anionic, exo-bridging ligand such as chloride, hydroxide, acetate
N,N′-双(2-吡啶基甲基)-3-羟基戊二酰胺[缩写为H 3(pmg)],旋光的N,N′-双2-吡啶基甲基和2-(2-吡啶基)乙基}-(S )-丙二酰胺[分别为H 3(lpm)和H 3(lpe)],和旋光不活泼的类似物[H 3(ppm)和H 3(pem)]得到二聚铜(II)配合物[Cu 2 XL]· nH 2 O(L = 1pm,1pe,pmm,pem,和pmg; X =阴离子,exo-桥接配体,例如氯离子,氢氧根,乙酸根(OAc),吡唑根(pz)和亚硝酸根离子)。这些络合物的特征是磁化率,电子,圆二色性和红外光谱。酰胺充当三价阴离子配体,它们通过吡啶和去质子化的酰胺氮原子以及通过桥接两个铜离子的去质子化的烷氧基氧侧原子配位。许多配合物在室温下为磁性下正磁性,两个铜离子之间的磁相互作用取决于L和外桥X。反铁磁相互作用按X的顺序增加,Cl