Pb2VIIIO(VO4)(V2O7)0.5, a Novel Lead Vanadium III Vanadate Possessing Trivalent Vanadium Rutile-Like Chains: Relationship with Related Compounds
✍ Scribed by N Henry; O Mentré; F Abraham
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 562 KB
- Volume
- 163
- Category
- Article
- ISSN
- 0022-4596
No coin nor oath required. For personal study only.
✦ Synopsis
The crystal structure of the new Pb 2 V 3 O 8.5 has been determined and re5ned with 5nal R 1 and wR 2 values 0.045 and 0.128, respectively, from 1063 independent single crystal re6ections. It crystallizes with the P2/c space group, a ؍ 7.687(2) A s , b ؍ 5.996(2) A s , c ؍ 17.337(4) A s , and ؍ 112.636(4)3. The structure consists of one-dimensional rutile-type chains of edge-sharing V III O 6 octahedra parallel to the b axis. Bidentate V V O 4 tetrahedra share corners with the chains to form one-dimensional columns. They are interconnected by divanadate V V 2 O 7 to form in5nite layers. In the presented work, the Pb 2 V 3 O 8.5 crystal structure is compared to several closely related materials including Ba 2 V 3 O 9 and the mineral Vauquelinite Pb 2 CuCrO 4 PO 4 OH. Special attention is given to the existence along the rutile chains of V}V pairs due to strong V+O bonds with O 2 bridging edges.
2002 Elsevier Science (USA)