Complexation of transition metal ions by a doubly chelating bis(diimine)-type ligand incorporating a photoresponsive azobenzene linker yielded two types of structurally distinct metallosupramolecular architectures,an[...Complexation of transition metal ions by a doubly chelating bis(diimine)-type ligand incorporating a photoresponsive azobenzene linker yielded two types of structurally distinct metallosupramolecular architectures,an[M_(4)L_(6)]^(8+)tetrahedral cage and an[M_(2)L_(2)]^(4+)metallocycle.In solution,these complexes are open for reversible interconversions between each other by varying the M:L ratio,or switching into a dynamic library of[M(L’/L’’)n]^(2+)mononuclear species upon addition of a competing monoamine.While the unbound ligand presents the reversible photoactivity of the azo bond,its complexes are photochemically inert,due to the inherent topology of these assemblies resulting from the restrictions of coordinate bond formation.展开更多
基金National Science Centre(grant SONATA BIS 2018/30/E/ST5/00032)for financial supportsupported by the INNCHEM(grant no.POWR.03.02.00-00-I023/17)co-financed by the European Union through the European Social Fund under the Operational Program Knowledge Education Development+1 种基金the Poznan Supercomputing and Networking Center(grant no.401)supported by the Foundation for Polish Science(FNP).
文摘Complexation of transition metal ions by a doubly chelating bis(diimine)-type ligand incorporating a photoresponsive azobenzene linker yielded two types of structurally distinct metallosupramolecular architectures,an[M_(4)L_(6)]^(8+)tetrahedral cage and an[M_(2)L_(2)]^(4+)metallocycle.In solution,these complexes are open for reversible interconversions between each other by varying the M:L ratio,or switching into a dynamic library of[M(L’/L’’)n]^(2+)mononuclear species upon addition of a competing monoamine.While the unbound ligand presents the reversible photoactivity of the azo bond,its complexes are photochemically inert,due to the inherent topology of these assemblies resulting from the restrictions of coordinate bond formation.
