Synthesis of copper(II) and nickel(II) complexes of several N-monosubstituted oxamide derivatives

✍ Scribed by Kiyoko Nonoyama; Heijiro Ojima; Matsuo Nonoyama

• Publisher: Elsevier Science
• Year: 1976
• Tongue: English
• Weight: 562 KB
• Volume: 20
• Category: Article
• ISSN: 0020-1693
• DOI: 10.1016/s0020-1693(00)94103-3

✦ Synopsis

Some nickel(U) and copper complexes have been prepared with N-monosubstituted oxamide derivatives: HO(CH2),NHCOCONH2 [n = 2(H3heo) and n = 3(H,hto)], 2-C5H&(CH1),-NHCOCONH, [n = l(H,pmo) and n = 2(Hzpeo)], and NHJOCONH-(CH,),NHCOCONH, fn = 2(H,edo) and n = 3(H4-(tdo)] . In the diamagnetic, square-planar Nal [Ni-(Hheo)J *H,O, Naz [Ni(Hhto), ] *2H,O, Naz [Ni-(tdo)] *4H,O, and Naz /Ni(edo)], the bidentate Hheo and Hhto are coordinated via two deprotonated amide-N atdms without coordination of a terminal alcohol group and the quadridentate tdo and edo via all four deprotonated amide-Natoms. In [Cu(Hpmo)-X].mH20 and [Cu(Hpeo)X] *mH20(X = Cl, Br) coordination atoms are pyridyl-N, primary amide-O, and deprotonated secondary amide-N atoms, while all the three nitrogen atoms of pmo are coordinated in Na [Cu(pmo)OH] *4Hz0. The magnetically subnormal

Na,lCu(hto)J*2Hz0 alone seems to be a dimer bridged by an alkoxide-0 atom.