Pyrazolic palladium compounds containing alcohol functionality: hindered rotation around Pd-N bond

被引：40

作者：

Boixassa, A

Pons, J ^{[1
]}

Virgili, A

Solans, X

Font-Bardia, M

Ros, J

机构：

[1] Univ Autonoma Barcelona, Dept Quim, Unitat Quim Inorgan, E-08193 Barcelona, Spain

[2] Univ Autonoma Barcelona, Dept Quim, Unitat Quim Organ, E-08193 Barcelona, Spain

[3] Univ Barcelona, Barcelona 08028, Spain

来源：

INORGANICA CHIMICA ACTA | 2002年 / 340卷

关键词：

palladium complexes; pyrazole complexes; crystal structures;

D O I：

10.1016/S0020-1693(02)01052-6

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reactions of the ligands 1-hydroxymethyl-3,5-dimethylpyrazole (HL1), 1-(2-hydroxyethyl)-3,5-dimethylpyrazole (HL2) and 1-(3-hydroxypropyl)-3,5-dimethylpyrazole (HL3) with [PdCl2(CH3CN)(2)] lead to trans-[PdCl2(HL)(2)] complexes. The ligands are coordinated to the Pd(II) by a N atom of the pyrazolic ring in a trans disposition. Two chlorides complete the environment of the metallic atom. These Pd(II) complexes were characterised by elemental analyses, conductivity measurements and IR, H-1 and C-13 NMR spectroscopies and X-ray diffraction. The NMR study of the complexes is consistent with a very slow rotation of ligands around the Pd-N bond, so that two conformational isomers can be observed in solution. The crystal structures of [PdCl2(HL)(2)] (HL = HL1, HL2) complexes are described. These complexes react with AgNO3 to give [Pd(NO3)(HL)(2)]NO3 compounds. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：49 / 55

页数：7

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