Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2011-01-01

Journal: ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE

Included Journals: SCIE

Volume: 637

Issue: 1

Page Number: 137-141

ISSN: 0044-2313

Key Words: Hydrothermal synthesis; Helical structures; Hydrogen bonds; Thermal analysis; Luminescence

Abstract: A new protonated borophosphate (H3O)Mg(H2O)(2)[BP2O8]center dot H2O (1) was synthesized under mild hydrothermal conditions and characterized by single-crystal X-ray diffraction, FTIR spectroscopy and TG-DTA. The compound crystallizes in the hexagonal system, space group P6(1)22 (No 178), a = 9.4462(7) angstrom, c = 15.759(2) angstrom, V = 1217.8(2) angstrom(3), and Z = 6. There exist infinite helical (1)(infinity){[BP2O8](3-)} ribbons built up from corner-sharing PO4 and BO4 tetrahedra, which are connected by MgO4(H2O)(2) leading to an infinite three-dimensional open-framework. The H3O+ ions are located at the free thread of the helical ribbons, whereas crystallized water occupy the channels of the helical ribbons. The dehydration of the compound occurs at a higher temperature which is presumably due to the anisotropic hydrogen bonds in the crystal structure. The luminescent properties of the compound were studied.