26111-08-0Relevant academic research and scientific papers
Synthesis of five- and six-membered ylide-chelate complexes by the reaction of pentacarbonyl-(dimethyloxosulfonium methylide)chromium(0) with bis(arsines) of the type (R2As)2X (X = C=PPh3, NMe, O, S) and 1,2-ethylenebis(phosphines) and -bis(arsines)
Weber, Lothar,Wewers, Dietmar
, p. 841 - 846 (2008/10/08)
The reaction of (R2As)2X (X = C=PPh3, NMe, O; R = Me, Ph) with Cr(CO)5[CH2S(O)Me2] in toluene at 45°C results in the formation of a series of arsonium ylide-chelate complexes (CO)4CrCH2AsR2XAsR2). The complex derived from (Ph2As)2O is converted into (CO)4CrCH2As(Ph)2SAsPh2 by treatment with gaseous hydrogen sulfide. The reactions of R12E1CH2CH2E 2R22 (E = P, As; R = Me, Ph) with Cr(CO)5-[CH2S(O)Me2] afford novel six-membered ylide-chelate complexes of the type (CO)4CrCH2E1R12(CH 2)2E2R22 as well as the known five-membered chelates (CO)4CrE1R12(CH2) 2E2R22. The novel coordination compounds have been characterized by elemental analysis and infrared, proton, and phosphorus NMR spectroscopy.
