Mu-28: an open-framework fluorogallophosphate with a three-dimensional 12-membered ring channel system

• Published in: Journal of solid state chemistry 2004-10, Vol.177 (10), p.3721-3728
• Main Authors: Josien, Ludovic, Simon-Masseron, Angélique, Gramlich, Volker, Porcher, Florence, Patarin, Joël
• Format: Article
• Language: English
• Subjects: 1,4-dimethylpiperazine; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Fluoride; FLUORIDES; FLUORINE COMPOUNDS; Fluorogallophosphate; GALLIUM COMPOUNDS; Growth from solutions; HYDROTHERMAL SYNTHESIS; Inorganic compounds; INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; Materials science; Methods of crystal growth; physics of crystal growth; Miscellaneous; MONOCLINIC LATTICES; MONOCRYSTALS; NUCLEAR MAGNETIC RESONANCE; PHOSPHATES; PHOSPHORUS 31; Physics; Single crystal structure elucidation; SPACE GROUPS; SPECTROSCOPY; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; X-RAY DIFFRACTION
• ISSN: 0022-4596; 1095-726X
• DOI: 10.1016/j.jssc.2004.06.041

A new three-dimensional (3-D) microporous fluorogallophosphate, named Mu-28, was obtained by hydrothermal synthesis. It was obtained in the presence of fluoride ions with 1,4-dimethylpiperazine as organic template. This new fluorogallophosphate, with chemical formula [Ga20P20O80(OH)6F6(H2O)4(C6H16N2)6] 8H2O, crystallizes in the monoclinic system space group P21 with the following unit cell parameters: a=13.23(1)Å, b=15.40(1)Å, c=14.80(1)Å, β=95.10(9)° (Z=1, R1=0.0435 [I>2σ(I)]). Its structure was determined by single-crystal X-ray diffraction with the help of 31P NMR spectroscopy. Mu-28 consists of a complex arrangement of GaO3(OH,F)(H2O)2, GaO4(OH)F and GaO4(OH)2 octahedra, GaO4F trigonal bipyramids and GaO3(OH,F) and PO4 tetrahedra. It displays a 3-D channel system delimited by 12-membered ring openings. A new three-dimensional microporous fluorogallophosphate, named Mu-28, was obtained by hydrothermal synthesis in the presence of fluoride ions and with 1,4−dimethylpiperazine as organic template. Its structure consists of a complex arrangement of GaO3(OH,F)(H2O)2, GaO4(OH)F and GaO4(OH)2 octahedra, GaO4F trigonal bipyramids and GaO3(OH,F) and PO4 tetrahedra. It displays a three-dimensional channel system delimited by twelve-membered ring openings.