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Nickel(II), palladium(II) and platinum(II) complexes of N-allyl-N′-pyrimidin-2-ylthiourea

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Abstract

Platinum(II), palladium(II) and nickel(II) complexes with N-allyl-N′-pyrimidin-2-ylthiourea were synthesized in 1:1 and 1:2 [metal:ligand] stoichiometric ratios and characterized by elemental analyses, molar conductivities, magnetic susceptibilities and by i.r., u.v.-vis., 1H- and 13C-n.m.r. and mass spectra. The 1H- and 13C- n.m.r. chemical shifts reveal coordination of one pyrimidine-N and sulphur atoms to PtII and PdII. The i.r. spectra indicate that the ligand behaves as a neutral monodentate towards NiII; coordinates via a pyrimidine-N and as a bidendate towards PdII and PtII coordinates via thione-S and a pyrimidine-N. The magnetic moments and electronic spectral data suggest a square-planar geometry for PtII and PdII complexes, a mixture of square-planar and tetrahedral geometries for the tetracoordinate NiII complex and octahedral for the six-coordinate one. The E.I. mass spectra of the complexes showed some isotope ion peaks of [M]+ and fragments containing metals; assignments of fragments containing metal ions were supported by the appearance of their peaks among isotope clusters.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah, P.O. Box 1455, Kingdom of Saudi Arabia

    Samir S. Kandil, Saud M. A. Katib & Naeema H. M. Yarkandi

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  1. Samir S. Kandil
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  2. Saud M. A. Katib
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  3. Naeema H. M. Yarkandi
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Correspondence to Samir S. Kandil.

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Kandil, S.S., Katib, S.M.A. & Yarkandi, N.H.M. Nickel(II), palladium(II) and platinum(II) complexes of N-allyl-N′-pyrimidin-2-ylthiourea. Transition Met Chem 32, 791–798 (2007). https://doi.org/10.1007/s11243-006-0253-4

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