Cobalt metagermanate is one of the germanates of cobalt, with chemical formula CoGeO3. It is paramagnetic at room temperature and turns antiferromagnetic at or below 32±1 K.[1] It exists in two crystal forms, the orthorhombic and the monoclinic.[2] It can be prepared by the reaction of cobalt(II,III) oxide (or cobalt(II) hydroxide[3]) and germanium dioxide at high temperatures.[2] The chemical vapor phase transfer method can also be used for its preparation.[4]
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| Other names
cobalt(II) metagermanate
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| Identifiers | |
3D model (JSmol)
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| Properties | |
| CoGeO3 | |
| Molar mass | 179.560 g·mol−1 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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References
edit- ^ N. Shamir, H. Shaked (1975-07-16). "The magnetic structure of CoGeO3". Physica Status Solidi A. 30 (1): 315–322. Bibcode:1975PSSAR..30..315S. doi:10.1002/pssa.2210300132. Retrieved 2020-09-05.
- ^ a b Günther Josef Redhammer, Anatoliy Senyshyn, Gerold Tippelt, Clemens Pietzonka, Georg Roth, Georg Amthauer (May 2010). "Magnetic and nuclear structure and thermal expansion of orthorhombic and monoclinic polymorphs of CoGeO3 pyroxene". Physics and Chemistry of Minerals. 37 (5): 311–332. Bibcode:2010PCM....37..311R. doi:10.1007/s00269-009-0335-x. ISSN 0342-1791. S2CID 97541433. Retrieved 2020-09-05.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ Carl W. F. T. Pistorius (June 1964). "Lattice Constants and Behaviour at high Pressure of CoGeO3". Zeitschrift für anorganische und allgemeine Chemie (in German). 330 (1–2): 107–108. doi:10.1002/zaac.19643300115. ISSN 0044-2313. Retrieved 2020-09-05.
- ^ Pfeifer, A.; Binnewies, M. (June 2002). "Chemischer Transport fester Lösungen. 8 [1] Zum Chemischen Transport von ternären und quaternären Cobalt(II)- und Nickel(II)-germanaten". Zeitschrift für anorganische und allgemeine Chemie. 628 (5): 1091. doi:10.1002/1521-3749(200206)628:5<1091::AID-ZAAC1091>3.0.CO;2-5.