Synthesis and vibrational spectra of some lead(II) halide adducts with O-, S-, and N-donor atom ligands

1 November 1976

journal article
Published by Canadian Science Publishing in Canadian Journal of Chemistry

Vol. 54 (21) , 3430-3438
https://doi.org/10.1139/v76-493

Abstract

Lead(II) halides (PbX₂ where X = Cl, Br, and I) formed five types of adducts with monodentate (L) and bidentate (LL) ligands: PbX₂•L, PbX₂•2L, 2PbX₂•L, PbX₂•LL, and PbX₂•2LL, but not all halides and ligands produced each type. Monodentate ligands were dimethylsulphoxide, N,N-dimethylacetamide, N,N-dimethylthioacetamide, thioacetamide, 2,6-dimethyl-γ-pyrone, N-methyl-2-pyridone, N-methyl-2-pyrollidinone, thiourea, pyridine, piperidine, and aniline, while bidentate ligands were ethylenediamine, tetramethylethylenediamine, 1,10-phenanthroline, and 2,2′-bipyridine. Infrared and Raman spectra are reported together with ligand vibrational frequencies shifted by coordination. Under similar experimental conditions qualitative trends in acceptor and donor abilities appeared to be PbI₂ > PbBr₂ > PbCl₂ and S-donors > O-donors, respectively.

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