Jump to main content
Jump to site search

Issue 36, 2007
Previous Article Next Article

Synthesis, structure and optical properties of rare-earth benzene carboxylates

Author affiliations

Abstract

Two series of rare-earth isophthalates of the general formula, [M2(H2O)][{C6H4(COO)2}2{C6H4(COOH)(COO)}2]·H2O, M = La (I), Pr (Ia), and Nd (Ib) and [M2(H2O)2][{C6H4(COO)2}3]·H2O, M = Y (II), Gd (IIa), and Dy (IIb) have been prepared by the reaction of the corresponding trivalent lanthanide salts and isophthalic acid under mild hydrothermal conditions. The La (I), Pr (Ia) and Nd (Ib) have MO9 polyhedra connected to the isophthalate anions forming a two-dimensional structure, whereas Y (II), Gd (IIa) and Dy (IIb) have MO7 and MO8 polyhedral units connected to the isophthalate anions forming a different, but related two-dimensional structure. Both the structures are stabilized by hydrogen bonding and π⋯π/CH⋯π interactions. Partial substitution of Eu and Tb (2 and 4%) at the La (I) and Y (II) sites give rise to characteristic red/pink or green luminescence, indicating a ligand-sensitized metal-centered emission. The Nd (Ib) compound shows interesting UV and blue emission through an up-conversion process.

Graphical abstract: Synthesis, structure and optical properties of rare-earth benzene carboxylates

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 26 Apr 2007, accepted on 25 Jun 2007, published on 13 Jul 2007 and first published online on 13 Jul 2007


Article type: Paper
DOI: 10.1039/B706363F
Citation: Dalton Trans., 2007, 4017-4026
  •   Request permissions

    Synthesis, structure and optical properties of rare-earth benzene carboxylates

    P. Mahata, K. V. Ramya and S. Natarajan, Dalton Trans., 2007, 4017
    DOI: 10.1039/B706363F

Search articles by author