Crystal structure, non-stoichiometry and conductivity of II-Na3M2(AsO4)3 (M=Al, Ga, Cr, Fe)
β Scribed by F. D'yvoire; E. Bretey; G. Collin
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 736 KB
- Volume
- 28-30
- Category
- Article
- ISSN
- 0167-2738
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A new series of isotypic monodiphosphates of general formula Li 9 M 3 (P 2 O 7 ) 3 (PO 4 ) 2 with M β«Ψβ¬ Al, Ga, Cr, Fe was synthesized by flux methods. The crystal structure of the aluminum and iron members is described here. They crystallize in the trigonal space group P3 c1 with a β«Ψβ¬ 9.553(1), c
Pure and homogeneous single crystals of orthorhombic mullite-type Bi 2 M 4 O 9 (M = Al 3+ , Ga 3+ , Fe 3+ ), and a mixed Bi 2 Fe 1.7 Ga 2.3 O 9 crystal from an equimolar Ga/Fe composition were grown by the top seeded solution growth (TSSG) method. All these compounds melt incongruently in the range
A mixture of Na,MO,, M(CO),, FeC1,.6 H,O, and (EtCO),O was heated at 120 ' C to produce the heterooctanuclear clusters Na,Fe,[M,O,-(O,CEt),], (M = Mo, 1; W, 2). The bioxo-capped clusters Na[M,O,(O,CEt),] (M, = MOW,, W,) were treated with Fe-(CO),, Cr(CO),, and Mo(CO), in (EtCO),O at 120Β°C to afford