K2[Pd(mda)]⋅H2O complex. The binary and ternary systems of Pd(II) ion with H4mda or H4obp (L) as primary ligands and guanosine (A) as secondary ligand were studied in aqueous solutions in 0.1 M NaCl ionic medium at 25 °C by potentiometric titrations. In addition, calculations based on density functional methods (DFT) were carried out. A natural bonding orbital analysis indicated that the Pd–N bonds
具有O–N–N–O型
配体H 4 mda(H 4 mda =丙二酰胺-N,N′-二
乙酸)和H 4 obp(H 4 obp = oxamido- N)的新型方形平面
钯(II)配合物(N'-二-3-
丙酸)的制备和表征。
配体通过两对具有方形螯合的去质子化的连接原子与
钯(II)离子配位。对于K 2 [Pd(mda)]·H 2 O络合物,通过晶体学验证了四坐标方平面几何形状。具有H 4 mda或H 4的Pd(II)离子的二元和三元系统通过电位滴定法在25°C的0.1 M NaCl离子介质中的
水溶液中研究了作为主要
配体的obp(L)和
鸟苷(A)作为辅助
配体的情况。此外,还进行了基于密度泛函方法(DFT)的计算。天然的键合轨道分析表明,Pd–N键本质上是三中心的,并且主要通过电荷转移(通过具有“ p”特性的氧孤对的强离域作用)进入键合的Pd–N轨道。测试了单核
钯(II)配合物和含酰胺酸N,O的
配体对几种肿