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Reactions of [MCl6]2− (M=Tc or Re) with salicylaldehyde. The molecular structure of tetraphenylphosphonium tetrachloro(salicylaldehydato) technetate (IV)

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Summary

The [PPh4][TcCl4(sal)] and [PPh4][ReOCl3(sal)] (sal=o-OC6H4CHO) complexes were synthesized from [PPh4]2[MCl6] (M=Tc or Re) and salicylaldehyde. The complexes were characterized by elemental analysis, magnetic susceptibility and conductivity measurements and i.r. spectrometry. The structure of [PPh4][TcCl4(sal)] was determined by x-ray methods and consists of well-separated units of octahedral [TcCl4(sal)]− anions and tetrahedral [PPh4]+ cations. The equatorial plane of the octahedron is formed by two Cl atoms and the chelated

(2) sal group, with the resulting TcCl2(sal) unit approximately planar. Selected values in the anion are as follows: Tc-Cl(mean) 2.34(1), Tc-O(1) 2.04(2) and Tc-O(2) 1.98(2), O(1)---O(2)(‘byte’) 2.83 Å; O(1)-Tc-O(2) 89.3(0.7)o.

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Authors and Affiliations

  1. Istituto di Chimica e Tecnologia del Radioelementi del CNR - Area della Ricerca Corso Stati Uniti 4, 35100, Padova, Italy

    Ulderico Mazzi, Edoardo Roncari, Giuliano Bandoli & Dore A. Clemente

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  1. Ulderico Mazzi
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  2. Edoardo Roncari
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  3. Giuliano Bandoli
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  4. Dore A. Clemente
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Mazzi, U., Roncari, E., Bandoli, G. et al. Reactions of [MCl6]2− (M=Tc or Re) with salicylaldehyde. The molecular structure of tetraphenylphosphonium tetrachloro(salicylaldehydato) technetate (IV). Transition Met Chem 7, 163–166 (1982). https://doi.org/10.1007/BF01035833

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  • DOI: https://doi.org/10.1007/BF01035833

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