Photochromism of an Organorhodium Dithionite Complex in the Crystalline-State: Molecular Motion of Pentamethylcyclopentadienyl Ligands Coupled to Atom Rearrangement in a Dithionite Ligand

摘要

In the crystalline state, the rhodium dinuclear complex (RhCp*)2(M-CH2)2(M-O2SSO2) (1) with a photoresponsive dithionite group (K-O2SSO2) and two pentamethylcyclopentadienyl ligands (Cp* = rf-C5Me5) undergoes a 100 reversible unimoleculartype Tinverse photochromism upon interconversion to (RhCp*)2("-CH2)2(^-O2SOSO) (2). The photochromism can be followed directly by using stepwise crystal structure analysis (Angew Chem., Int. Ed, 2006, 45, 6473). In this study, we found that the photoreaction of 1 was triggered by absorption of the 510 nm light (charge transfer band from