Our group designs photochromic organometallic systems based on a photo-induced isomerization between two tethered functional groups. The current paradigm is based on coupled functional groups: the bridge between a coordinated and uncoordinated group prepositions, the latter for addition when the former dissociates. In addition, the functional group motions are coupled to enhance addition of the uncoordinated group. The efficacy of the system depends on the structure of the bridge, the functional groups and the tether. This design is intended to enhance the rate of photo-induced linkage isomerization of chelates while minimizing processes that lead to fatigue or recombination. The synthesis of (?5-pentalenyl)Mn(CO)2 complexes with the coupled functional groups tethered on the saturated pentalene ring reduces the degrees of freedom of the tether and therefore the functional groups. Synthesis of targets and their spectroscopic properties will be presented.

Synthesis and characterization of (?<sup>5</sup>-Pentalenyl)Mn(CO)<sub>2 </sub>complexes with tethered functional groups: Development of organometallic photochromes

247th National Meeting (2014)

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Synthesis and characterization of (?5-Pentalenyl)Mn(CO)2 complexes with tethered functional groups: Development of organometallic photochromes

Synthesis and characterization of (?⁵-Pentalenyl)Mn(CO)₂complexes with tethered functional groups: Development of organometallic photochromes