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The title new tetragonal nickel arsenate is best formulated as Ni0.5-xNi4As3O12-2x(OH)2x (x = 0.15) and corresponds to a hydrated form of Ni4.5As3O12. A unique feature of the structure is a partially filled dodecahedral Ni site with 4 symmetry and long Ni-O bonds [2.300(2) (× 4) and 2.667(2)Å (× 4)].

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablocks IUC9900080, j15

fcf

Structure factor file (CIF format)
Contains datablock j15

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