Cobalt metagermanate

Cobalt metagermanate
Names
	Other names cobalt(II) metagermanate
Identifiers
CAS Number	12016-77-2 ;
3D model (JSmol)	Interactive image;
PubChem CID	23198960;
	InChI InChI=1S/Co.GeO3/c;2-1(3)4/q+2;-2 Key: IYTIOSWUENIHKO-UHFFFAOYSA-N;
	SMILES [Co+2].[O-][Ge](=O)[O-];
Properties
Chemical formula	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). Infobox references

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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