摘要:
Four new coordination compounds, namely, Zn(o-MAABA)(2)(Phen) (1), [Cd(o-MAABA)(2)center dot 2H(2)O](2) (2), {[Pb2Cl2(o-MAABA)(2)(Phen)(4)]}center dot 2H(2)O (3 center dot 2H(2)O), [Pb(NO3)(o-MAABA)(Phen)](n) (4), where o-MAABA=o-methacrylamidobenzoic acid and phen=1, 10-phenanthroline, have been synthesized. All compounds were fully confirmed by FT-IR, elemental analysis and TGA analysis. Their structures were determined by single crystal X-ray diffraction, in which compound 1 shows a mononuclear structure, compounds 2 and 3 have binuclear structures and compound 4 shows an infinite chain. In 2 and 4, the adjacent chains are extended into a 3D supramolecular architecture via pi-pi interactions. Solid-state room temperature luminescence spectra revealed that emission bands of compound 1 were located at 524 nm (lambda(ex)=352 nm) and compound 4 at 479 and 584 nm (lambda(ex)=390 nm) assigned to the excimer formation. The emission at 454 nm (lambda(ex)=340 nm) of compound 2 was mainly ascribed to the Ligand-Metal Charge Transfer (LMCT). Crown Copyright (c) 2013 Published by Elsevier Inc. All rights reserved.