Difference between revisions of "Transition metal monoxides"
From apm
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Unless otherwise noted crystal structure is '''simple cubic like table salt NaCl'''. <br> | Unless otherwise noted crystal structure is '''simple cubic like table salt NaCl'''. <br> | ||
Typical (with a few exceptions) is '''1900°C melting point and Mohs 5'''. | Typical (with a few exceptions) is '''1900°C melting point and Mohs 5'''. | ||
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| + | == Monometal monoxides == | ||
* ScO - no monoxide? (well its a rare earth anyway) | * ScO - no monoxide? (well its a rare earth anyway) | ||
----- | ----- | ||
| − | * TiO - [https://en.wikipedia.org/wiki/Titanium(II)_oxide Titanium(II)_oxide] - | + | * TiO - [https://en.wikipedia.org/wiki/Titanium(II)_oxide Titanium(II)_oxide] - [http://webmineral.com/data/Hongquiite.shtml Hongquiite (webminera.com)] - 4.96g/ccm | 5.36g/ccm(mineral) - '''Mohs 5 to 6''' - 1,750°C |
* VO - [https://en.wikipedia.org/wiki/Vanadium(II)_oxide Vanadium(II)_oxide] - no mineral - 5.758g/ccm - Mohs ?? - 1,789 °C | * VO - [https://en.wikipedia.org/wiki/Vanadium(II)_oxide Vanadium(II)_oxide] - no mineral - 5.758g/ccm - Mohs ?? - 1,789 °C | ||
* CrO - [https://en.wikipedia.org/wiki/Chromium(II)_oxide Chromium(II)_oxide] - no mineral - only powders by thermodynamic means - 300°C (low!) - Mohs ?? | * CrO - [https://en.wikipedia.org/wiki/Chromium(II)_oxide Chromium(II)_oxide] - no mineral - only powders by thermodynamic means - 300°C (low!) - Mohs ?? | ||
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* NiO - [https://en.wikipedia.org/wiki/Nickel(II)_oxide Nickel(II)_oxide] - [https://en.wikipedia.org/wiki/Bunsenite Bunsenite] 6.898g/ccm - '''Mohs 5.5''' - 1,955°C - watersolubility negligible | * NiO - [https://en.wikipedia.org/wiki/Nickel(II)_oxide Nickel(II)_oxide] - [https://en.wikipedia.org/wiki/Bunsenite Bunsenite] 6.898g/ccm - '''Mohs 5.5''' - 1,955°C - watersolubility negligible | ||
----- | ----- | ||
| − | * CuO - [https://en.wikipedia.org/wiki/Copper(II)_oxide Copper(II)_oxide] - [https://en.wikipedia.org/wiki/Tenorite tenorite] 6.5g/ccm - '''Mohs 3.5 to 4.0 | + | * CuO - [https://en.wikipedia.org/wiki/Copper(II)_oxide Copper(II)_oxide] - [https://en.wikipedia.org/wiki/Tenorite tenorite] 6.5g/ccm - '''Mohs 3.5 to 4.0''' - 1,326 °C - water insoluble - '''Monoclinic''' |
| − | * ZnO - [https://en.wikipedia.org/wiki/Zinc_oxide Zinc_oxide] - [https://en.wikipedia.org/wiki/Zincite] - 5.64–5.68g/ccm - '''Mohs 4 | + | * ZnO - [https://en.wikipedia.org/wiki/Zinc_oxide Zinc_oxide] - [https://en.wikipedia.org/wiki/Zincite] - 5.64–5.68g/ccm - '''Mohs 4''' - 1,974°C (decomposes) - watersolubility minute - '''Hexagonal''' |
| − | + | == Dimetal monoxides == | |
| − | * [https://en.wikipedia.org/wiki/Copper(I)_oxide Copper(I)_oxide] - [https://en.wikipedia.org/wiki/Cuprite Cuprite] - 6.14g/ccm - '''Mohs 3.5 to 4''' - 1,232°C - water insoluble - '''cubic (but...)''' | + | |
| + | * Cu<sub>2</sub>O - [https://en.wikipedia.org/wiki/Copper(I)_oxide Copper(I)_oxide] - [https://en.wikipedia.org/wiki/Cuprite Cuprite] - 6.14g/ccm - '''Mohs 3.5 to 4''' - 1,232°C - water insoluble - '''cubic (but...)''' | ||
There is more metal than oxygen but the material is still transparent. Odd.<br> | There is more metal than oxygen but the material is still transparent. Odd.<br> | ||
Maybe because copper is pretty noble metal? | Maybe because copper is pretty noble metal? | ||
| + | ----- | ||
| + | More scarce silver (in the copper group below copper) does the same but the resulting material has much worse properties. | ||
| + | * Ag<sub>2</sub>O - [https://en.wikipedia.org/wiki/Silver_oxide Silver_oxide] - 7.14g/ccm - '''Mohs ??''' - decompoes ≥ 200 °C - slightly water soluble - '''cubic (but...)''' | ||
| − | + | = Related = | |
* [[Binary gem-like compound]] | * [[Binary gem-like compound]] | ||
| − | + | = External links = | |
* [https://en.wikipedia.org/wiki/Category:Transition_metal_oxides Wikipedia Category:Transition_metal_oxides] | * [https://en.wikipedia.org/wiki/Category:Transition_metal_oxides Wikipedia Category:Transition_metal_oxides] | ||
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| + | [[Category:Base materials with high potential]] | ||
Latest revision as of 10:07, 14 April 2021
Unless otherwise noted crystal structure is simple cubic like table salt NaCl.
Typical (with a few exceptions) is 1900°C melting point and Mohs 5.
Monometal monoxides
- ScO - no monoxide? (well its a rare earth anyway)
- TiO - Titanium(II)_oxide - Hongquiite (webminera.com) - 4.96g/ccm | 5.36g/ccm(mineral) - Mohs 5 to 6 - 1,750°C
- VO - Vanadium(II)_oxide - no mineral - 5.758g/ccm - Mohs ?? - 1,789 °C
- CrO - Chromium(II)_oxide - no mineral - only powders by thermodynamic means - 300°C (low!) - Mohs ??
- MnO - Manganese(II)_oxide - Manganosite - 5.364g/ccm - Mohs 5 to 6 - 1,945 °C - water insoluble
- FeO - Iron(II)_oxide - Wüstite - 5.7g/ccm - Mohs 5.0 to 5.5 - 1,377°C - water insoluble
- CoO - Cobalt(II)_oxide - no mineral? - 6.45g/ccm - Mohs ?? - 1,933°C - water insoluble
- NiO - Nickel(II)_oxide - Bunsenite 6.898g/ccm - Mohs 5.5 - 1,955°C - watersolubility negligible
- CuO - Copper(II)_oxide - tenorite 6.5g/ccm - Mohs 3.5 to 4.0 - 1,326 °C - water insoluble - Monoclinic
- ZnO - Zinc_oxide - [1] - 5.64–5.68g/ccm - Mohs 4 - 1,974°C (decomposes) - watersolubility minute - Hexagonal
Dimetal monoxides
- Cu2O - Copper(I)_oxide - Cuprite - 6.14g/ccm - Mohs 3.5 to 4 - 1,232°C - water insoluble - cubic (but...)
There is more metal than oxygen but the material is still transparent. Odd.
Maybe because copper is pretty noble metal?
More scarce silver (in the copper group below copper) does the same but the resulting material has much worse properties.
- Ag2O - Silver_oxide - 7.14g/ccm - Mohs ?? - decompoes ≥ 200 °C - slightly water soluble - cubic (but...)
