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Low temperature crystal growth and structure of ordered Ba7F12Cl2

Published in Zeitschrift für Naturforschung. B. 1999, vol. 54b, p. 515-518
Abstract Crystals of composition Ba[7]F[12]Cl[2] were obtained by areaction at room temperature between Ba[2+]/Cl[-]/F[-]in a gel of agar-agar/water. The hexagonal crystals have space group P6, a=1064.69(8), c=417.89(5)pm, V=410.24(8) 10[6] pm[3] and Z=l. The anions form a propeller type network located in tunnels parallel to the c[hex] axis; the chloride ions are located at the center on the propeller axes. The Ba[2+] ions are coordinated by a (distorted) tricapped trigonal environment of fluoride and chloride anions. Disorder is present for one particular Ba[2], site. The average structure is isotypic with the structure of Pb[7]F[12]Cl[2].
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Research group Groupe Bill
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KUBEL, Frank, BILL, Hans, HAGEMANN, Hans-Rudolf. Low temperature crystal growth and structure of ordered Ba7F12Cl2. In: Zeitschrift für Naturforschung. B, 1999, vol. 54b, p. 515-518. https://archive-ouverte.unige.ch/unige:3709

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Deposited on : 2009-10-06

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