263867-64-7Relevant academic research and scientific papers
Palladium(II) chloride complexes with 1, 2, 4-triazolo[1, 5-a]-pyrimidines: X-ray,15N-1H NMR and15N CP MAS studies
Szlyk, Edward,Grodzicki, Antoni,Pazderski, Leszek,Wojtczak, Andrzcj,Chatlas, Janusz,Wrzeszcz, Grzegorz,Sitkowski, Jerzy,Kamicnski, Bohdan
, p. 867 - 872 (2000)
Palladium(ii) complexes of formula [Pd(tp)2Cl2] 1, [Pd(dmtp)2Cl2]-H2O 2, [Pd(dptp)2ClJ-H2O 3, [Pd(dbtp)2Cl2] 4a, 4b, where tp = l, 2, 4-triazolo[l, 5-a]pyrimidine, dmtp = 5, 7-dimethyl-l, 2, 4-triazolo[l, 5-a]pyrimidine, dptp = 5, 7diphenyl-l, 2, 4-triazolo[l, 5-a]pyrimidine, dbtp = 5, 7-di-/e/7-butyl-l, 2, 4-triazolo[l, 5-a]pyrimidine, were prepared. The crystal structure of [Pd(dbtp)2ClJ-0.5 C2HSOH 4c was resolved by X-ray diffraction analysis, exhibiting monomeric, nearly square-planar cis geometry and N(3) co-ordination. A small tetrahedral distortion from the co-ordination plane was observed. The Pd-Cl distances are 2.276(1) and 2.283(1) A, and Pd-N 2.042(3) and 2.040(3) A. Spectroscopic measurements (UV-VIS, IR, NMR) suggested analogous structures for 1, 2 and 3. Compounds 4a and 4b are most likely rotational isomers in solution and distortional isomers in the solid state. I5N-'H heteronuclear correlation NMR was measured for 2, 4a and 4b whereas 1 and 3 were characterized with 13C and N CP MAS. Significant shielding of the co-ordinated N(3) and adjacent C(2) or C(3a) nuclei was observed. The Royal Society of Chemistry 2000.
