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Tetrakis(imidazole)platinum(II) bis(triiodides). The crystal and molecular structure of tetrakis(1, 2-dimethylimidazole)platinum(II) bis(triiodide) by Hans-Jürgen Korte; Bernt Krebs; Cornelis G. Van Kralingen; Antonius T.M. Marcelis; Jan Reedijk is a Chemistry article available to read on EtoBox.

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The synthesis, character&&ion and structure of compounds with formula Pt(ligand),J6 is described, in which the ligands are I-methylimidazole, 2-methylimidazole and 1,2dimethylimidazole (DMIz). Upon treatment of acidic solutions containing the Pt-(ligand)$+ cations, with a large excess of aqueous KI, invariably precipitates of the above formula result. Infrared and NMR spectra of the compounds in organic solvents agree with the presence of Pt-(ligand)? cations, whereas polyiodide anions are suggested from fm\_IR spectra (solid state) and visible spectra (CHzCN solution). To understand the poor solubihty in aqueous solution (other Ptfligand)? compounds, with CI, Br, I, CIOa anions, are very soluble) the structure of one of these mutually similar compounds was solved with the aid of single-crystal X-ray diffraction. Pt(DMIz)J, crystallizes in the monoclinic space group P2 Jc with two formula units in a unit cell of dimensions a = 9.376(3), b = 19.849(6) and c = 10.387(3) A, fl = 113.25(3/O. The structure has been determined by the heavyatom method, using both Pt and I in the starting model, and refined by least-squares techniques to R = 0.035 and R, = 0.040 for 3615 rejlections. It co

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Author

Hans-Jürgen Korte; Bernt Krebs; Cornelis G. Van Kralingen; Antonius T.M. Marcelis; Jan Reedijk

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0020-1693)

Published

1981

Language

EN

Field

Chemistry (Physical Sciences)