High-temperature synthesis of an open-framework compound, Na2Cs2Cu3(P2O7) 2Cl2 (Cu-4), by molten-salt methods

Angewandte Chemie - International Edition

Volumn 40, Issue 9, 2001, Pages 1690-1693

  Huang, Qun ^a   Hwu, Shiou Jyh ^a   Mo, Xunhua ^a  

^a CLEMSON UNIVERSITY   (United States)

Author keywords

Cuprates; Microporosity; Solid state structures; Template synthesis; Zeolite analogues

Indexed keywords

ION EXCHANGE; POROSITY; POROUS MATERIALS; SYNTHESIS (CHEMICAL);

RING CHANNELS;

SODIUM COMPOUNDS;

ARTICLE; CHEMICAL STRUCTURE; CRYSTAL STRUCTURE; HIGH TEMPERATURE PROCEDURES; OXIDATION REDUCTION REACTION; REACTION ANALYSIS; STRUCTURE ANALYSIS; X RAY DIFFRACTION;

EID: 0035805311     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/1521-3773(20010504)40:9<1690::AID-ANIE16900>3.0.CO;2-E     Document Type: Article

References (31)

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19. 5, reactions by both slow cooling and quenching were studied after heating at 550 °C for a day. The quenched reaction gave a high-yield product (ca. 80%) of CU-4, while the slow-cooled reaction gave a mixture of the CU-4 phase (ca. 50%) and unknown products. The thermogravimetric analysis results show that the CU-4 phase decomposes at - 560 C, and further studies suggest that the temperature window in which the CU-4 phase exists is ca. 500-550 °C.
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21. 3. Further details on the crystal structure investigation may be obtained from the Fachinformationszentrum Karlsruhe, 76344 Eggenstein-Leopoldshafen, Germany (fax: (+-49)7247-808-666: e-mail: crysdata@fiz.karlsruhe.de), on quoting the depository number CSD-411491. TEXSAN: Single Crystal Structure Analysis Software. Version 1.6b, Molecular Structure Corp., The Woodlands, TX. 1993; "Scattering Factors for Non-Hydrogen Atoms": D. T. Cromer, J. T. Waber, International Tables for X-ray Crystallography, Vol. IV, Kynoch Press, Birmingham, 1974, Table 2.2 A. pp. 71-98; G. M. Sheldrick in Crystallographic Computing 3 (Eds.: G. M. Sheldrick, C. Krüger, R. Goddard), Oxford University Press, London, 1985, pp. 175-189: G. M. Sheldrick, SHELXS-93, Göttingen, Germany, 1993.
22. 3. Further details on the crystal structure investigation may be obtained from the Fachinformationszentrum Karlsruhe, 76344 Eggenstein-Leopoldshafen, Germany (fax: (+-49)7247-808-666: e-mail: crysdata@fiz.karlsruhe.de), on quoting the depository number CSD-411491. TEXSAN: Single Crystal Structure Analysis Software. Version 1.6b, Molecular Structure Corp., The Woodlands, TX. 1993; "Scattering Factors for Non-Hydrogen Atoms": D. T. Cromer, J. T. Waber, International Tables for X-ray Crystallography, Vol. IV, Kynoch Press, Birmingham, 1974, Table 2.2 A. pp. 71-98; G. M. Sheldrick in Crystallographic Computing 3 (Eds.: G. M. Sheldrick, C. Krüger, R. Goddard), Oxford University Press, London, 1985, pp. 175-189: G. M. Sheldrick, SHELXS-93, Göttingen, Germany, 1993.
23. 3. Further details on the crystal structure investigation may be obtained from the Fachinformationszentrum Karlsruhe, 76344 Eggenstein-Leopoldshafen, Germany (fax: (+-49)7247-808-666: e-mail: crysdata@fiz.karlsruhe.de), on quoting the depository number CSD-411491. TEXSAN: Single Crystal Structure Analysis Software. Version 1.6b, Molecular Structure Corp., The Woodlands, TX. 1993; "Scattering Factors for Non-Hydrogen Atoms": D. T. Cromer, J. T. Waber, International Tables for X-ray Crystallography, Vol. IV, Kynoch Press, Birmingham, 1974, Table 2.2 A. pp. 71-98; G. M. Sheldrick in Crystallographic Computing 3 (Eds.: G. M. Sheldrick, C. Krüger, R. Goddard), Oxford University Press, London, 1985, pp. 175-189: G. M. Sheldrick, SHELXS-93, Göttingen, Germany, 1993.
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28. 2O, shows 7 × 18 Å elliptical channels due to the incorporation of the ethylenediamine (en) molecule: V. Soghomonian, Q. Chen, R. C. Haushalter, J. Zubieta, Angew. Chem. 1993, 105, 601-603; Angew. Chem. Int. Ed. Engl. 1993, 32, 610-612.
29. Differential thermal analysis of the stoichiometric mixture shows two exotherms at 380 C and 630 °C.
30. A relevant article entitled "Fascinating Alkali Halide Structures of Different Dimensionalities Incorporated in Host Lattices" appeared after the submission of the present paper: R. Vaidhyanathan, S. Neeraj, P. A. Prasad, S. Natarajan, C. N. R. Rao, Angew. Chem. 2000, 112, 3612-3615; Angew. Chem. Int. Ed. 2000, 39, 3470-3473.
31. A relevant article entitled "Fascinating Alkali Halide Structures of Different Dimensionalities Incorporated in Host Lattices" appeared after the submission of the present paper: R. Vaidhyanathan, S. Neeraj, P. A. Prasad, S. Natarajan, C. N. R. Rao, Angew. Chem. 2000, 112, 3612-3615; Angew. Chem. Int. Ed. 2000, 39, 3470-3473.