Synthesis and Characterization of a Novel Luminescent Silver(I)-Chromium(III) Heterometallic Hybrid Material With a Tripodal Ligand N-(Carbamoylmethyl) Iminodiacetato Acid (H2ADA)

Abstract

Using the tripodal N-(carbamoylmethyl)iminodiacetato acid (H2ADA) ligand and corresponding Ag(I) and Cr(III) salts, a novel two-dimensional (2D) heterometallic Ag(I)-Cr(III) coordination polymer [AgCr(ADA)2]n (1) has been isolated. H2ADA are deprotonated into ADA2−, which adopts a novel asymmetrical η1, η1, η1, η2, μ5-pentadentate coordination mode to bridge neighboring seven-coordinated Ag(I) and five-coordinated Cr(III) ions forming a 2D inorganic-organic hybrid framework containing 2D Ag-O-Cr inorganic connectivity. The solid-state fluorescence spectrum of 1 was also investigated exhibiting the maximum emission peak at 609 nm while no fluorescence emission band can be observed for the free ligand. 1 also represents a luminescent heterometallic hybrid framework with scarcely reported pentacoordinated deprotonated H2ADA ligands. Supplemental materials are available for this article. Go to the publisher's online edition of Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry to view the supplemental file.