Structure of Tl2Mo2P2O11

Guesdon, A.; Borel, M.M.; Grandin, A.; Leclaire, A.; Raveau, B.

doi:10.1107/s0108270193004287

Cited by 4 publications

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“…For the largest cations, such as above formulation. First a mixture of MoO 3 , H(NH 4 ) 2 PO 4 , and Li 2 CO 3 was ground in an agate mortar and heated in rubidium or cesium, mixed-valence molybdenum monophosphates with a layer structure, AMo 2 O 3 (PO 4 ) 2 with air to 673 K in a platinum crucible to eliminate CO 2 , NH 3 , and H 2 O. In a second step, the appropriate amount of A ϭ Rb or Cs (1), are synthesized with two kinds of coordination for Mo (octahedral and trigonal bipyramidal).…”

Section: Introductionmentioning

confidence: 99%

A Mixed-Valence Molybdenum Monophosphate with a Three-Dimensional Framework: LiMo2O3(PO4)2

Ledain¹,

Leclaire²,

Borel³

et al. 1996

Journal of Solid State Chemistry

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Section: Introductionmentioning

confidence: 99%

A Mixed-Valence Molybdenum Monophosphate with a Three-Dimensional Framework: LiMo2O3(PO4)2

Ledain¹,

Leclaire²,

Borel³

et al. 1996

Journal of Solid State Chemistry

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“…Moreover, some of these units exhibit molybdenum with different valences. This is the case of the A 2 Mo 2 O 3 (PO 4 ) 2 monophosphates with A = K, Rb, Tl, − A 3 Mo 4 O 6 (PO 4 ) 4 with A = Tl, Rb, and Cs 1.5 Mo 2 O 3 (PO 4 ) 2 that are all characterized by Mo 2 O 11 units built up of two corner-sharing MoO 6 octahedra; in these phosphates molybdenum is pentavalent for the first series, whereas a mixed valence Mo(V)−Mo(VI) is observed for the second series. Similarly, the phosphate AMo 3 O 6 (PO 4 ) 2 7 is of great interest since one of its octahedral sites may contain either Mo(V) or Mo(VI) depending on the valence of the A cation inserted between the layers.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Properties and New Structural Classification of Molybdenum Phosphates Containing Mo(V)

et al. 1997

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A combined theoretical and experimental study of molybdenum phosphates containing Mo(V) either as purely Mo(V) or as mixed-valent Mo(V)/Mo(VI) and Mo(IV)/Mo(V) is performed. This investigation, based on a structural classification of molybdenum phosphates, derived from that proposed by Costentin et al., allows a detailed discussion of both the valence of the different Mo sites as well as the different coupling mechanisms for the unpaired electron of the Mo(V) octahedra. Either direct Mo−Mo or indirect interaction through the shared oxygen atoms can lead to magnetic moments per Mo(V) lower than expected. It is shown that although the PO4 tetrahedra do not effectively couple the unpaired electrons of the different Mo(V)O6 octahedra, they play an important role in determining the magnetic properties of these solids by influencing the internal geometry of the MoO6 octahedra.

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ChemInform Abstract: Structure of Tl2Mo2P2O11.

et al. 1994

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structure structure (solids and liquids) D 2000 -007Structure of Tl2Mo2P2O11. -Brown crystals of the title compound are prepared by heating of the nominal composition Tl2Mo2P2O11 at 1123 K in an evacuated silica tube followed by slow cooling to 923 K and quenching to room temperature. The compound, which crystallizes in the monoclinic space group P21/c with Z = 4, is built-up from Mo2P2O15 units consisting of one Mo2O11 group sharing four corners with two PO4 tetrahedra along the c axis, thus forming (Mo2P2O13)∞ chains. Laterally in the (001) plane the (Mo2P2O13)∞ columns are linked by sharing corners to form a 3-dimensional framework with 2 different intersecting tunnels running along the c axis and .ltbbrac.110.rtbbrac. with Tl2+ located at three different sites of the tunnels. -(GUESDON, A.; BOREL, M. M.; GRANDIN, A.; LECLAIRE, A.; RAVEAU, B.; Acta

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Structure of Tl2Mo2P2O11

Cited by 4 publications

References 1 publication

A Mixed-Valence Molybdenum Monophosphate with a Three-Dimensional Framework: LiMo2O3(PO4)2

A Mixed-Valence Molybdenum Monophosphate with a Three-Dimensional Framework: LiMo2O3(PO4)2

Magnetic Properties and New Structural Classification of Molybdenum Phosphates Containing Mo(V)

ChemInform Abstract: Structure of Tl2Mo2P2O11.

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