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A Tri-α-PbO2 Related Structure: Li4ZnIn2F12

✍ Scribed by J-J. Maguer; G. Courbion

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
214 KB
Volume
103
Category
Article
ISSN
0022-4596

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✦ Synopsis

The compound (\mathrm{Li}{4} \mathrm{Znin}{2} \mathrm{~F}{12}) has been synthesized in the form of single crystals. The symmetry of the unit cell is orthorhombic: (a=4.7465(6) \AA, b=17.592(2) \AA, c=5.0582(6) \AA), with space group (P b c n). (Z=2). The structure has been determined using 525 independent refections (\left(R=0.015, R{\mathrm{w}}=0.018\right.) ). This phase exhibits a new cationic distribution inside an h.c. packing of (\mathrm{F}^{-})ions; four cationic sites are occupied, two of them being statistically filled (zinc and lithium at one and half a lithium at the other). The stacking of octahedra is strongly related to the tri- (\alpha-\mathrm{PbO}{2}) structure. An isotypic (\mathrm{Li}{4} M \mathrm{In}{2} \mathrm{~F}{12}) series with (M=\mathrm{Mg}). Fe, (\mathrm{Co}, \mathrm{Ni}) is evidenced. 1993 Academic Press, Inc.

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