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

✍ Scribed by Wen-Jung Chang; Pai-Ching Chang; Hsien-Ming Kao; Kwang-Hwa Lii

Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
651 KB
Volume
178
Category
Article
ISSN
0022-4596

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✦ Synopsis

Two new organic-inorganic hybrid compounds, [Ga(phen)(H 1.5 PO 4 ) 2 ] Á H 2 O (1) and [Ga(phen)(HPO 4 )(H 2 PO 4 )] Á 1.5H 2 O (2) (phen ¼ 1,10-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 GaO 4 N 2 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 p-p stacking interactions of phen ligands and hydrogen bonds. 2 H MAS NMR spectroscopy was applied to study the deuterated sample of 1 which contains very short hydrogen bonds with an O?O distance of 2.406(2) A ˚. Crystal data for 1: monoclinic, space group C2/c (No. 15), a ¼ 11.077(1) A ˚, b ¼ 21.496(2) A ˚, c ¼ 7.9989(7) A ˚, b ¼ 127.211(2)1, and Z ¼ 4. The crystal symmetry is the same for 2 as for 1 except a ¼ 27.555(2) A ˚, b ¼ 6.3501(5) A ˚,

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