In this paper, the synthesis of two new N,N′,N-ligands, bis[2-(3,5-diphenyl-1-pyrazolyl)ethyl]amine (L1) and bis[2-(3,5-diphenyl-1-pyrazolyl)ethyl]ethylamine (L2) is reported. These ligands form complexes with the formula [PdCl(N,N′,N)]Cl when reacting with [PdCl2(CH3CN)2] in a 1:1 metal-to-ligand molar ratio. Treatment of these ligands with [PdCl2(CH3CN)2] in a 1:1 metal-to-ligand molar ratio in the presence of AgBF4 or NaBF4 gave [PdCl(N,N′,N)](BF4) complexes. These PdII complexes were characterized by elemental analyses, conductivity measurements, mass spectrometry, and IR, 1H, and 13C1H} NMR spectroscopies. The X-ray structure of the complex [PdCl(L2)](BF4) has been determined. The metal atom is coordinated by two azine nitrogen atoms and one amine nitrogen atom of the aminopyrazole ligand. The distorted square planar coordination is completed by one chlorine atom. In this complex, intermolecular π–π stacking interactions are present.
本文报告了两种新的 N,N′,N-
配体--双[2-(3,5
-二苯基-1-
吡唑基)乙基]胺 (L1) 和双[2-(3,5
-二苯基-1-
吡唑基)乙基]
乙胺 (
L2) 的合成。当这些
配体与[PdC
L2(CH3CN)2]以 1:1 的
金属-
配体摩尔比反应时,会形成[PdCl(N,N′,N)]Cl 式的配合物。在
AgBF4 或 Na 存在下,以 1:1 的
金属与
配体摩尔比处理这些
配体与 [PdC
L2(CH3CN)2],可得到 [PdCl(N,N′,N)](
BF4)配合物。通过元素分析、电导率测量、质谱分析以及红外光谱、1H 光谱和 13C1H} NMR 光谱,对这些 PdII 复合物进行了表征。NMR 光谱。复合物 [PdCl(
L2)]( ) 的 X 射线结构已经确定。
金属原子与
氨基
吡唑配体的两个氮氮原子和一个胺氮原子配位。畸变方平面配位由一个
氯原子完成。在该配合物中,存在分子间 π-π 堆积相互作用。