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  • 1
    ISSN: 0044-2313
    Keywords: Technetium ; nitrido complexes ; crystal structure ; dithiolenes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Mixed-Ligand Complexes of Technetiums. XVI Synthesis and Structure of (1,2-Dicyanoethene-1,2-dithiolato)bis(dimethylphenylphosphine)nitridotechnetium(V), [TcN(Me2PhP)2(mnt)][TcN(Me2PhP)2(mnt)] is formed from [TcNCl2(Me2PhP)3] and one equivalent of the sodium salt of 1,2-dicyanoethene-1,2-dithiolate (Na2mnt). The same reaction yields [TcN(mnt)2]2-, when a large excess of the ligand and long reaction periods are applied. The complex anion can be isolated as tetraalkylammonium or tetraphenylarsonium salts.[TcN(Me2PhP)2(mnt)] crystallizes in the triclinic space group P1 (a = 10.000(5), b = 14.182(6), c = 17.77(1) Å, α = 98.77(3), β = 103.77(3), γ = 104.55(3)°; Z = 4). The coordination sphere is a square pyramid with the sulfur and phosphorus atoms as basal plane. Tc is situated out of this plane by 0.56 Å towards the nitrido ligand.
    Notes: [TcN(Me2PhP)2(mnt)] entsteht bei der Reaktion von [TcNCl2(Me2PhP)3] mit dem Natriumsalz des 1,2-Dicyanoethen-1,2-dithiolats (Na2mnt), wenn ein äquivalent des Liganden eingesetzt wird. Bei Verwendung eines Na2mnt-überschusses und Reaktionszeiten von mehreren Stunden bildet sich das Komplexanion [TcN(mnt)2]2-, das in Form seiner Tetraalkylammonium- bzw. Tetraphenylarsoniumsalze isoliert werden kann.[TcN(Me2PhP)2(mnt)] kristallisiert triklin (Raumgruppe P1; a = 10,000(5); b = 14,182(6); c = 17,77(1) Å; α = 98,77(3); β = 103,77(3); γ = 104,55(3)°; Z = 4). Das Koordinationspolyeder ist eine quadratische Pyramide, in der das Metall um 0,56 Å über der durch die Schwefel- und Phosphoratome gebildeten Grundfläche angeordnet ist.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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