A new sodium molybdenyl monophosphate Na 3 (MoO) 2 (PO 4 ) 3 has been synthesized. It crystallizes in the space group C2/c with a โซุโฌ 15.211(2) A s s , b โซุโฌ 8.909(1) A s s , c โซุโฌ 9.362(1) A s s , and โซุโฌ 115ยฐยฐ99(1). The [Mo 2 P 3 O 14 ] three-dimensional framework can be described from isolated Mo
A Molybdenyl Chloromonophosphate with an Intersecting Tunnel Structure: Ba3Li2Cl2(MoO)4(PO4)6
โ Scribed by M.M Borel; A Leclaire; J Chardon; J Provost; B Raveau
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 603 KB
- Volume
- 141
- Category
- Article
- ISSN
- 0022-4596
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โฆ Synopsis
A new molybdenyl chloromonophosphate, Ba 3 Li 2 Cl 2 (MoO) 4 (PO 4 ) 6 , has been synthesized. It crystallizes in the space group P2 1 2 1 2 1 , with a โซุโฌ 9.1768(4), b โซุโฌ 15.660(1), and c โซุโฌ 18.117(2) A s . This original pseudotetragonal structure forms an intersecting tunnel framework [Mo 4 P 6 O 28 ] built up from [Mo 2 P 2 O 12 ] layers interconnected through single PO 4 tetrahedra. The [Mo 2 P 2 O 12 ] layers derive from the perovskite structure by replacing one octahedron out of two by one PO 4 tetrahedron. The Li ุ , Ba 2ุ , and Cl\ species are distributed in the [100], [001], [201], and [201 ] tunnels forming intersecting rows. Two sorts of polyhedra are found for Li ุ : LiO 3 Cl tetrahedra and LiO 3 triangular groups. The susceptibility measurements suggest a bidimensional antiferromagnetic behavior between 12 and 20 K, whereas a peak at 10 K is attributed to canting phenomena.
๐ SIMILAR VOLUMES
New mixed valent monophosphates \(A_{3} \mathrm{O}_{2}\left(\mathrm{MoO}_{4}\right)_{4}\left(\mathrm{PO}_{4}\right)_{4}\) with an intersecting tunnel structure have been isolated for \(A=\mathrm{Rb}, \mathrm{Tl}\). The structure of the \(\mathrm{Rb}-\) phase has been solved from a single crystal X-r
The exploration of Li+A+Mo+P+O systems has allowed several Mo(V) phosphates, Li 4ุx A x (MoO) 3 (PO 4 ) 3 P 2 O 7 (A โซุโฌ Na, Ag, Cs, K) and Li 3 Ba 0.5 (MoO) 3 (PO 4 ) 3 P 2 O 7 , to be synthesized. Two types of closely related structures are evidenced depending on the nature and content of the A ca