期刊
INORGANICA CHIMICA ACTA
卷 358, 期 8, 页码 2464-2472出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2005.02.020
关键词
palladium complexes; pyridine complexes; phosphoric acid esters ligands; crystal structures; trans geometry
The synthesis of diethyl (pyridin-2-, -3-, -4-ylmethyl)phosphate (2-pmOpe, 3-pmOpe, 4-pmOpe) ligands and their palladium (11) complexes of general formula trans-[PdCl2L2] (L = 2-pmOpe, 3-pmOpe,4-pmOpe) has been described. Pyridine phosphate derivatives were synthesized via the condensation of phosphorochloridic acid diethyl ester with an appropriate pyridinylmethanol in the presence of triethylamine. The compounds have been identified and characterized by IR, far-IR, H-1 NMR, P-31 NMR, P-31 CP-MAS NMR and elemental analyses. The crystal and molecular structures of palladium (11) complexes, i.e., [PdCl2(2-pmOpe)(2)] and [PdCl2(4-pmOpe)(2)] determined by the X-ray diffraction method, are presented. In both structures, Pd(II) ions are four-coordinated by two chlorine atoms and two pyridine nitrogen atoms. The geometry of complexes is square-planar and adopt a trans configuration, which is consistent with preparation method. (c) 2005 Elsevier B.V. All rights reserved.
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