Reactions of 2-phenyl-4,4-dimethyl-2-oxazoline with lithium tetrachloropalladate(II) and palladium(II) acetate give dichlorobis(2-phenyl-4,4-dimethyl-2-oxazoline,3-N)palladium(II) and a cyclopalladated binuclear complex, di-μ-acetato-bis[2-(4′,4′-dimethyl-2′-oxazolinyl)phenyl,1-C,3′-N)dipalladium(II), respectively. The latter complex is readily converted by a metathetical reaction with lithium chloride into its chloro-bridged analogue. The chloro-bridged complex reacts with triphenylphosphine to give the corresponding mononuclear σ-bonding palladium complex. All the complexes prepared in this study were characterized by means of IR and NMR spectroscopies.
2-苯基-
4,4-二甲基-2-噁唑啉与四
氯钯酸
锂(II)和
乙酸钯(II)反应,得到二
氯双(2-苯基-
4,4-二甲基-2-噁唑啉、3-N)
钯(II)和环
钯化双核络合物,即二μ-乙酰基双[2-(4′,4′-二甲基-2′-
恶唑啉基)苯基,1-C,3′-N)二
钯(II)。后一种络合物很容易通过与
氯化锂的元反应转化成其
氯桥类似物。
氯桥络合物与
三苯基膦反应生成相应的单核σ键
钯络合物。本研究中制备的所有络合物都通过红外光谱和核磁共振光谱进行了表征。