Synthesis, structural characterization, and solid-state NMR spectroscopy of [Ga(phen)(H1.5PO4)(2)] center dot H2O and [Ga(phen)(HPO4)(H2PO4)] center dot 1.5H(2)O (phen=1, 10-phenanthroline), two organic-inorganic hybrid compounds with 1-D chain struc

摘要

Two new organic-inorganic hybrid Compounds, [Ga)phen)(H1.5PO4)(2)] center dot H2O (1) and [Ga(phen)(HPO4)(H2PO4)] center dot 1.5H(2)O (2) (phen = 1, 1 0-phenanthroline), have been synthesized by hydrothermal methods and structurally characterized by single-crystal X-ray diffraction, infrared spectroscopy, thermogravimetric analysis, and solid-state NMR spectroscopy. Their structures consist of 1-D chains of strictly alternating GaO4N2 octahedra and phosphate tetrahedra. The phen ligands in both compounds bind in a bidentate fashion to the gallium atoms and the 1-D structures extend into 3-D supramolecular arrays via pi-pi stacking interactions of phen ligands and hydrogen bonds. H-2 MAS NMR spectroscopy was applied to study the deuterated sample of 1 which contains very short hydrogen bonds with all O center dot center dot center dot O distance of 2.406(2) angstrom. Crystal data for 1: monoclinic, space group C2/c (No. 15), a = 11.077(1) angstrom, b = 21.496(2) angstrom, c = 7.9989(7) angstrom, beta = 127.211(2)degrees, and Z = 4. The crystal symmetry is the same for 2 as for 1 except a = 27.555(2) angstrom, b = 6.3501(5) angstrom, c = 21.327(2) angstrom, beta = 122.498(1)degrees, and Z = 8. (C) 2005 Elsevier Inc. All rights reserved.