Photochemical fragmentation kinetics of triruthenium dodecacarbonyl

Synchrotron ultrafast techniques for photoactive transition metal complexes

“…Furthermore, this derivative acts as a photocatalyst in photo-activated synthesis, inducing the breaking of selective bonds depending on the excitation wavelength [188,189]. Owing to the high practical and fundamental interest in the metal-metal bond cleavage mechanism, the Ru 3 (CO) 12 metal cluster has been widely investigated, both in solution and in solid matrices, using various spectroscopic methods [189][190][191][192][193][194][195][196][197].…”

Marked influence of the bridging carbonyl ligands on the photo- and electrochemistry of the clusters [Ru3(CO)8(μ-CO)2(α-diimine)] (α-diimine = 2,2′-bipyridine, 4,4′-dimethyl-2,2′-bipyridine and 2,2′-bipyrimidine)

“…2- 4 The rich photochemistry of the unsubstituted carbonyl clusters [M 3 (CO) 12 ] (M = Ru, Os) has been studied most extensively over the last decades. [4][5][6][7][8][9][10][11][12][13][14] Irradiation into the lowest-energy absorption bands of these clusters results in the formation of the open-structure transients [M 3 (CO) 11 (µ-CO)]. 6,12, 15 More recently, much attention has been devoted in our laboratory to the photochemical and redox activation of the substituted clusters [Os 3 (CO) 10 (α-diimine)], which has led to the discovery of a variety of biradical, zwitterionic, radical anionic and dianionic open-structure intermediates, formed upon electron transfer-induced cleavage of an Os-Os(α-diimine) bond.…”

Steric and Electronic Effects on the Photochemical Reactions of Metal-Metal Bonded Carbonyls

“…These results cle a rly show th a t these h eterodinu cle ar complexes, just as A lthough a few inte resting results have already been obtained in this fie ld (re f. [200][201][202][203][204][205][206][207][208], much has to be done to understand the photochem ical reactions o f m etal clusters, which play an im p o rta n t role in catalysis.…”