Synthesis and characterization of cyclopentadienyltricarbonyl tungsten selenocarboxylate and selenosulfonate complexes

Cyclopentadienyltricarbonyl tungsten selenocarboxylate complexes CpW(CO)3SeCOR (1) (R = C6H5 (a), 3,5-C6H3(NO2)2 (b), 3-C6H4NO2 (c), 4-C6H4NO2 (d), CH3 (e)) and cyclopentadienyltricarbonyl tungsten selenosulfonate complexes CpW(CO)3SeSO2R (2) (R = C6H5 (a), 4-C6H4CH3 (b), 4-C6H4OCH3 (c), 4-C6H4Cl (d), CH3 (e)) have been prepared from the tungsten anion [CpW(CO)3Se]− and acid- or sulfonyl chlorides respectively. The new complexes (1 and 2) have been characterized by IR, 1H NMR spectroscopies as well as elemental analysis. The crystal structure of CpW(CO)3SeCO-3-C6H4NO2 (1c) was determined.

Cyclopentadienyltricarbonyl tungsten selenocarboxylate complexes CpW(CO)3SeCOR (1) and selenosulfonate complexes CpW(CO)3SeSO2R (2) have been prepared from tungsten hexacarbonyl and the proper reagents. The new complexes (1 and 2) have been characterized by IR, 1H NMR spectroscopies as well as elemental analysis. The crystal structure of CpW(CO)3SeCO-3-C6H4NO2 (1c) was determined.Figure optionsDownload as PowerPoint slide