2,3-吡嗪二羧酸 、 氨 、 palladium dichloride 以
not given 为溶剂,
以55%的产率得到diammine(pyrazine-2,3-dicarboxylato-N,O)palladium(II)
参考文献:
名称:
Diammine (pyrazine-2,3-dicarboxylato-N,O) palladium(II): synthesis, crystal structure, spectroscopic and thermal properties
摘要:
The synthesis, crystal structure and spectroscopic (IR, XPS) characterization of a new Pd complex with 2,3-pyrazinedicarboxylic acid (2,3-H(2)pzdc), Pd(2,3-pzdc)(NH3)(2) (1), are reported. This compound crystallizes in the monoclinic space group P2(1)/c with four molecules in the unit cell. Using 2697 independent reflections up to 2 theta=60 degrees, the structure was refined to R = 0.044. The lattice is formed of isolated zwitterionic moieties in which the square-planar coordination of palladium is ensured by three nitrogen atoms and one oxygen from a carboxylate group attached to the pyrazine ring. Both the structural and the infrared data confirm the absence of a polymeric network. Thermal degradation under nitrogen produces a mixture of palladium metal and PdO at 773 K. The XPS data of 1 are discussed together with those of a related compound with 3,5-pyrazoledicarboxylic acid (H(3)Dcp), (NBu4)(2)[Pd-2(Dcp)(2)] (2) and suggest the presence of a delocalized positive charge in the pyrazine ring.