Synthesis, characterization and X-ray crystal structure determination of cyclopalladated [Csp2,N,N′]−, zwitterionic and chelated compounds in the reaction of 3,5-diphenyl-N-alkylaminopyrazole derived ligands with Pd(II)
作者:Gemma Aragay、Josefina Pons、Jordi García-Antón、Xavier Solans、Mercè Font-Bardia、Josep Ros
DOI:10.1016/j.jorganchem.2008.07.038
日期:2008.10
donor atom. As a result, we have obtained the formation of three different compounds for each one of the ligands: chelated ([PdCl2(L)] L = L1 (1a), L2 (2a)), zwitterionic ([PdCl3(LH)] LH = LH1 (1b), LH2 (2b)), and cyclopalladated compounds ([PdCl(LC)] (LC = LC1 (1c), LC2 (2c)). The solid-state structures for 1a, 1b and 1c were determined by single crystal X-ray diffraction methods. The potentially [C,N
两个N-烷基氨基吡唑配体的合成是1- [2-(二乙基氨基)乙基] -3,5-二苯基吡唑(L1)和1- [2-(二辛基氨基)乙基] -3,5-二苯基吡唑(L2)报告。这些配体先验地存在一个吡唑氮和一个胺氮作为潜在的供体原子。然而,在配体(L1和L2)与[PdCl 2(CH 3 CN)2 ]的反应中,C个苯基原子中的一个也可以充当供体原子。结果,我们为每个配体都形成了三种不同的化合物:螯合([PdCl 2(L)] L = L1(1a),L2(2a)),两性离子([PdCl 3(LH)] LH = LH1(1b),LH2(2b))和环钯化合物([PdCl(LC)](LC = LC1(1c),LC2(2c))。通过单晶X射线衍射法确定了1a,1b和1c的固态结构,潜在的[C,N,N'] -配体通过N pz和N氨基与金属原子配位为1a,通过N pz表示1b并通过N pz,N氨基和C苯基为1c。