Novel light-emitting clays with structural Tb3+ and Eu3+ for chromate anion detection

For the first time, Tb3+ and Eu3+ were incorporated into the framework of synthetic saponite by a one-pot hydrothermal procedure, obtaining luminescent materials with interesting photophysical properties, exploited for the fluorescent sensing of the chromate anion in water.

A series of homonuclear lanthanide coordination polymers based on a fluorescent conjugated ligand: syntheses, luminescence and sensor for pollutant chromate anion

Series of homonuclear lanthanide coordination polymers incorporating conjugated ligand have been fabricated successfully and characterized systematically.

Propane-1,2-diammonium chromate(VI)

In the title molecular salt, (C3H12N2)[CrO4], each chromate anion accepts six N—H...O and C—H...O hydrogen bonds from nearby propane-1,2-diammonium cations. Three of the four O atoms of the chromate anion accept these bonds; the remaining Cr—O bond length is notably shorter than the others. In the crystal, the anions and cations stack in layers lying parallel to (100): the hydrogen-bonding pattern leads to a three-dimensional network.