1095489-98-7Relevant academic research and scientific papers
Photochemical or electrochemical bond breaking-exploring the chemistry of (μ2-alkyne)Co2(CO)6 complexes using time-resolved infrared spectroscopy, spectro-electrochemical and density functional methods
Manton, Jennifer C.,Cerpentier, Florian J. R.,Harvey, Emma C.,Clark, Ian P.,Greetham, Gregory M.,Long, Conor,Pryce, Mary T.
, p. 14642 - 14652 (2019)
The photochemistry of (μ2-CRCR′)Co2(CO)6 complexes (R = pyrenyl, R′ = H; R = pyrenyl, R′ = ferrocenyl; R = ferrocenyl, R = H) was investigated by ps-time-resolved infrared spectroscopy at room temperature in dichloromethane solution. The main focus of these studies was to determine the primary photoprocess relevant to the light assisted Pauson-Khand reaction. These studies were supported by spectro-electrochemical investigations and density functional calculations which suggest that the primary process to initiate the Pauson-Khand reaction involves a homolytic cleavage of the Co-Co bond forming a high-spin diradical species and not CO-loss as previously thought.
Synthesis, electrochemistry, and photophysical properties of a series of luminescent pyrene-thiophene dyads and the corresponding Co2(CO) 6 complexes
Coleman, Anthony,Pryce, Mary T.
, p. 10980 - 10990 (2009/04/25)
A series of pyrene based dyad systems together with their dicobalt hexacarbonyl complexes (1b-6b) were synthesized. The pyrene-thiophene dyads are luminescent in room temperature solution with luminescence lifetimes on the nanosecond time scale. At room temperature the dyad emission is quenched by coordination to a Co2(CO)6 moiety via an acetylene bridge. However, at 77 K this emission is not fully quenched following complexation. Electrochemical studies suggest that an intraligand state is responsible for the emission. Photochemical studies in the presence of PPh3 indicate that CO loss occurs following broadband irradiation with λexc > 400 nm, resulting in the formation of both -pentacarbonyl and -tetracarbonyl photoproducts.
