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Crystal Research and Technology |
Cryst. Res. Technol. 40,
579 (2005) - Abstract -
New zeotype borophosphates with chiral tetrahedral topology: (H)0.5M1.25(H2O)1.5[BP2O8].H2O (M= Co(II) and Mn(II))
A. Yilmaz, L. Tatar Yildirim*, X. Bu**, M. Kizilyalli, and G. D. Stucky***
Department of Chemistry Middle East Technical University, 06531, Ankara, Turkey
*Department of Engineering Physics, Hacettepe University, Beytepe 06800, Ankara, Turkey
**Department of Chemistry and and Biochemistry California State University, Long Beach 1250 Bellflower Blvd. Long Beach, CA 90840-3903, USA
***Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, USA
| Keywords | borophosphate, molecular sieve, microporous, zeotype, phosphate, boron, manganese, cobalt, crystal structure |
| PACS | 61.66.Hq |
| DOI | 10.1002/crat.200410386 |
Two new isostructural open-framework zeotype transition metal borophosphate compounds, (H)0.5M1.25(H2O)1.5[BP2O8].H2O (M=Co(II) and Mn(II)) were synthesized by mild hydrothermal method. The structure of compounds were characterized by single-crystal X-ray diffraction which have ordered, alternating, vertex-sharing BO4, PO4, and (MO4)OM(H2O)2 groups with hexagonal, P6122 (No 178) space group and unit cell parameters for Co a= 9.4960(6) Å, c= 15.6230(13) Å, for Mn a= 9.6547(12) Å, c= 15.791(3) Å, Z=1 for both of them. TGA/DTA analysis, IR spectroscopy were used for characterization. Magnetic susceptibility measurements for both of the compound indicate strong antiferromagnetic interaction between metal centers.
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