A novel crystal polymorph of volborthite, Cu 3 V 2 O 7 (OH) 2 ·2H 2 O
A new polymorph of volborthite [tricopper(II) divanadium(V) heptaoxide dihydroxide dihydrate], Cu 3 V 2 O 7 (OH) 2 ·2H 2 O, has been discovered in a single crystal prepared by hydrothermal synthesis. X-ray analysis reveals that the monoclinic structure has the space group C 2/ c at room temperature,...
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| Published in | Acta crystallographica. Section C, Crystal structure communications Vol. 68; no. 7; pp. i41 - i44 |
|---|---|
| Main Authors | , , , , , |
| Format | Journal Article |
| Language | English |
| Published |
15.07.2012
|
| Online Access | Get full text |
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| Summary: | A new polymorph of volborthite [tricopper(II) divanadium(V) heptaoxide dihydroxide dihydrate], Cu
3
V
2
O
7
(OH)
2
·2H
2
O, has been discovered in a single crystal prepared by hydrothermal synthesis. X-ray analysis reveals that the monoclinic structure has the space group
C
2/
c
at room temperature, which is different from that of the previously reported
C
2/
m
structure. Both structures have Cu
3
O
6
(OH)
2
layers composed of edge-sharing CuO
4
(OH)
2
octahedra, with V
2
O
7
pillars and water molecules between the layers. The Cu atoms occupy two and three independent crystallographic sites in the
C
2/
m
and
C
2/
c
structures, respectively, likely giving rise to different magnetic interactions between Cu
II
spins in the kagome lattices embedded in the Cu
3
O
6
(OH)
2
layers. |
|---|---|
| ISSN: | 0108-2701 |
| DOI: | 10.1107/S010827011202536X |