Abstract
A new dysprosium complex [Dy(IA)2(H2O)4]nnNO3 (1; IA is isonicotinic acid anion), was synthesized. The structure was determined by single-crystal X-ray crystallography. Every two neighboring Dy3+ ions are interlinked by two μ2-bridging IA groups to form a one-dimensional (1-D) chain. The chains link to each other through the π···π interactions and yield a three-dimensional (3-D) supramolecular network. This complex displays yellow photoluminescence, which should be due to the 4F9/2 → 6H13/2 transition of the 4f electrons of the Dy3+ ions. The solid-state UV/Vis diffuse reflectance spectrum unveils that this compound has a wide optical band gap of 2.08 eV.
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