A reversible SCSC transformation from a blue metamagnetic framework to a pink antiferromagnetic ordering layer exhibiting concomitant solvatochromic and solvatomagnetic effects

摘要

A [Co _6(μ _3-OH) _4(datrz) _2] ~(6+) ribbon-based blue framework with a metamagnetic transition from an antiferromagnetic ordering to a weak spontaneous magnetization state, {[Co _3(CH _3OH)(μ _3-OH) _2(datrz)(sip)] ·2.25H _2O} _n (1, Hdatrz = 3,5-diamino-1,2,4-triazole, sip ~(3-) = 3,5-dicarboxybenzenesulfonate), was solvothermally synthesized. 1 exhibits a reversible single-crystal-to-single-crystal transformation by solvent exchange to generate a pink antiferromagnetic ordering coordination layer with a similar [Co _6(μ _3-OH) _4(datrz) _2] ~(6+) ribbon to 1, {[Co _3(H _2O) _3(μ _3-OH) _2(datrz)(sip)]·2.125H _2O} _n (2). Such concomitant solvatochromic and solvatomagnetic effects are scarcely observed and are significantly due to the coexistence of differently distorted metal coordination spheres and the cleavage/generation of the weak coordination bond.