The roles of the allyloxy groups on terephthalate for the formation of three coordination networks

Add time:08/21/2019    Source:sciencedirect.com

Three new metal-organic coordination polymers [Cd2L2] (1), [ZnL(H2O)]·H2O (2) and [Co3L2(μ3-OH)2(H2O)4] (3) were synthesized by the combination of the terephthalate derivative of 2,5-bis(allyloxy)terephthalic acid (H2L) and corresponding metal nodes. These compounds are constructed from the linear frameworks of carboxylate groups or oxygens bridging transition metal nodes, which are further interlinked into 3D frameworks with allyloxy groups occupying the cavities. The fluorescent properties of compounds 1–3 and H2L in the solid state are dramatically affected by the allyloxy groups on terephthalate.

► The allyloxy groups on terephthalate affect the formation the 3D frameworks. ► The allyloxy groups occupy the cavities of the 3D frameworks. ► The nature of the metal nodes plays important roles to control the coordination networks. ► Compounds 1-3 emit strong fluorescences mainly affected by the allyloxy groups.

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