%0 Journal Article %A Alvarez, M. Angeles %A García, M. Esther %A Menéndez, Sonia %A Ruiz, Miguel A. %D 2011 %T Multisite Reactivity of the Central Mo2CP Core in the Unsaturated Carbyne-Bridged Complex [Mo25-C5H5)2(μ-CPh)(μ-PCy2)(CO)2] %U https://acs.figshare.com/articles/journal_contribution/Multisite_Reactivity_of_the_Central_Mo_sub_2_sub_CP_Core_in_the_Unsaturated_Carbyne_Bridged_Complex_Mo_sub_2_sub_sup_5_sup_C_sub_5_sub_H_sub_5_sub_sub_2_sub_CPh_PCy_sub_2_sub_CO_sub_2_sub_/2629066 %R 10.1021/om2003738.s001 %2 https://acs.figshare.com/ndownloader/files/4279980 %K HBF %K HC %K Mo 2C center %K Mo 2Cp %K Central Mo 2CP Core %X The title compound reacted with HBF4·OEt2 at room temperature to give a mixture of the agostic-like, phosphine-bridged complex [Mo2Cp2(μ-CPh)(μ-κ12-PHCy2)(CO)2]BF4 (major) and the carbene-bridged complex [Mo2Cp2(μ-η12-CHPh)(μ-PCy2)(CO)2]BF4 (minor). It readily added a molecule of HCCCO2Me or a single Se atom at its Mo2C(carbyne) center to give with high yield the corresponding propenylylidene- or selenoacyl-bridged derivatives [Mo2Cp2{μ-η23-CPhCHC(CO2Me)}(μ-PCy2)(CO)2] and [Mo2Cp2{μ-η,κ:η,κ-C(Ph)Se}(μ-PCy2)(CO)2], respectively. In contrast, the addition of a neat donor at the metal site can induce a reversible carbyne–carbonyl coupling, as observed in the reaction with N2CPh2 to give the ketenyl derivative [Mo2Cp2{μ-η12-C(Ph)CO}(μ-PCy2)(CO)(κ1-N2CPh2)]. %I ACS Publications