Conformational and photosensitive adjustment of the 4,4′-bipyridinium in Mn(ii) coordination complexesElectronic supplementary information (ESI) available: Synthesis, characterization, additional structural and magnetic data. CCDC 765400–765401. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c0cc00135j

Two Mn(ii) coordination complexes with considerable difference in photochromism and chirality have been constructed from the photoactive 1-(4-carboxybenzyl)-4,4′-bipyridinium ligand upon adjusting the reaction solvents. [ABSTRACT FROM AUTHOR]