Statements (22)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:stone
crystalline phase of ice |
| gptkbp:crystalSystem |
tetragonal
|
| gptkbp:density |
1.66 g/cm³
|
| gptkbp:discoveredIn |
1920s
|
| gptkbp:form |
gptkb:Ice_VII
|
| gptkbp:formsAtPressure |
above 2.1 GPa
|
| gptkbp:formsAtTemperature |
below 5°C
|
| gptkbp:foundIn |
high-pressure laboratory experiments
|
| gptkbp:hasLatticeParameterA |
3.366 Å
|
| gptkbp:hasLatticeParameterC |
6.885 Å
|
| gptkbp:hasMolecularFormula |
gptkb:H2O
|
| https://www.w3.org/2000/01/rdf-schema#label |
Ice VIII
|
| gptkbp:hydrogenOrder |
ordered
|
| gptkbp:isotopeEffectObserved |
yes
|
| gptkbp:notFoundNaturallyOnEarth |
true
|
| gptkbp:numberOfWaterMoleculesPerUnitCell |
8
|
| gptkbp:relatedTo |
gptkb:Ice_IX
gptkb:Ice_VII |
| gptkbp:spaceGroup |
I41/amd
|
| gptkbp:bfsParent |
gptkb:Ice
|
| gptkbp:bfsLayer |
5
|