| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1334785 | Polyhedron | 2012 | 6 Pages |
Two new magnesium-based isophthalate coordination networks result from the variation of solvent and temperature: Mg4(IPA)3(HCOO)2(DMF)2 [1; IPA = isophthalate; space group Fdd2, a = 22.480(5) Å, b = 38.210(8) Å, c = 8.8690(2), V = 7618(3) Å3] is a three-dimensional network of edge-shared magnesium octahedra connected by IPA linkers. A formate group forms a bridge between the magnesium metal centers and a coordinated DMF molecule occupies the space within the channels of compound 1. Mg(IPA)(EtOH) 2; space group Pbca, a = 14.1854(2) Å, b = 16.326(2) Å, c = 19.233(3) Å, V = 4404.73(2) Å3 also forms a three-dimensional network, which is constructed by connecting dimers of Mg2 into chains with IPA linkers. Two solvent ethanol molecules coordinate to one of magnesium metal centers. Compound 1 forms using DMF as a solvent while ethanol is used as a solvent to form compound 2. Topological analyses show that both structures can be described as trinodal nets with point symbols (48·62)2(410·65)(417·611)2 for 1 and (48·62)(49·6)(431·614) for 2. Photoluminescence measurements of 1 and 2 reveal a red shift of the spectra of both compounds compared to the free IPA ligand when an excitation wavelength of 385 nm is used.
Graphical abstractTwo new magnesium coordination networks were synthesized using isophthalate as an organic linker. Solvent and temperature were used as synthetic variables to direct the synthesis of each network. The luminescence spectra of the networks show a red shift compared to that of the free linker.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Synthesis of two new magnesium networks linked by isophthalate ligand. ► Solvent and temperature used as synthetic variables to yield different topologies. ► Synthesized compounds shows red-shift in fluorescence spectra compared to free ligand.
