Thermal analysis of oxamates, thiooxamates and their complexes
摘要:
The article describes the thermal behaviour of Cu(II) complexes formed with ligands R1R2NCXCOOK (R1R2=H or CH3, X=O or S). The oxamates form 2/1 complexes Cu(R1R2NCOCOO)(2) . xH(2)O and deprotonated ionic complexes K2Cu[R2NCOCOO](2) . yH(2)O. These compounds form polymers by thermal decomposition and deprotonation of the primary or secondary amide function. The ligands break at the C-C bond by forming mainly CO2 and oxamides (R1R2NCOCONR1R2), by recombination of the amide functional groups. The thiooxamates also form 2/1 complexes and decompose without forming any other stable compound. (C) 1998 Elsevier Science B.V.
N-烷基草酸盐及其配合物的结构和光谱研究:MeHNCOCOOK 和 [Cu(EtHNCCOO) 2 ] 的 X 射线结构,以及振动研究
摘要:
摘要 这项工作致力于 N-烷基草酸酯及其配合物的结构和振动研究。MeHNCOCOOK 和 [Cu(EtHNCCOO) 2 ] 的结构已通过单晶 X 射线晶体学确定。钾盐在单斜空间群 P 2 1 / n 中结晶,而铜 (II) 络合物在三斜空间群 P 1 中结晶。MeHNCOCOOK 的晶格常数为 a =3.882(2), b =10.175(1), c =13.004(1), β =97.04(1)° 和 a =5.013(1), b =6.996(1), c =8.575(1) A , α =73.54(1), β =85.66(1), γ =71.22(1)° [Cu(EtHNCOCOO) 2 ]。该盐具有反式仲酰胺基团,并且 K - 离子被属于六个不同 N-甲基草酸酯 (-1) 部分的七个 O 原子包围。配体 EtHNCCOO - 在反式方形平面铜 (II) 复合物中表现为双齿螯合物,连接原子是酰胺和羧酸氧之一。铜