%0 Journal Article 
%A Gómez Rubio, Manuel
%A Hernández Prieto, Cristina
%A Martín Alonso, Avelino
%A Mena Montoro, Miguel
%A Santamaría Angulo, Cristina
%T Synthesis and Characterization of Cyclopentadienyl Sulfur Niobium Complexes
%D 2019
%@ 0022-328X
%U http://hdl.handle.net/10017/38634
%X A trimetallic sulfide cluster [Nb3(η5-C5Me5)3Cl3(μ3-Cl)(μ-S)3(μ3-S)] (2) has been synthesized from the reaction of [Nb(η5-C5Me5)Cl4] (1) with (Me3Si)2S in a 4:3 ratio by the release of SiClMe3. The trinuclear nature of complex 2 has been established by single crystal X-ray diffraction analysis. Thermal treatment of 2 with SiH3Ph generated the dinuclear niobium(IV) complex [Nb2(η5-C5Me5)2Cl2(μ-S)2] (3) in a quantitative way. Likewise, one-pot syntheses of 3 has been developed from reaction of 1, (Me3Si)2S, and SiH3Ph in toluene. A series of dinuclear sulfide niobium(IV) derivatives [Nb2(η5-C5Me5)2R2(μ-S)2] (R = Me 4, Et 5, CH2SiMe3 6, C3H5 7, CH2Ph 8, nBu 9) can easily be obtained from the reaction of 3 with 2 equiv of the corresponding alkylating reagents. Single crystal X-ray diffraction analyses of 6 and 7 showed in all cases a trans disposition of the substituents.
%K Sulfur complexes
%K cyclopentadienyl ligand
%K niobium
%K metathesis reactions
%K Química
%K Chemistry
%~ Biblioteca Universidad de Alcala