Sr2CuO2Cl2
E484698
Sr2CuO2Cl2 is a layered copper-oxide compound widely studied as a prototypical parent material of high-temperature superconducting cuprates, notable for its strong electron correlations and antiferromagnetic order.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Sr2CuO2Cl2 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4975755 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Sr2CuO2Cl2 Context triple: [Mott insulator, exampleMaterial, Sr2CuO2Cl2]
-
A.
Canningite
Canningite refers to a follower or supporter of British statesman George Canning, typically associated with his moderate, liberal Tory political views in the early 19th century.
-
B.
Fedora Kinoite
Fedora Kinoite is an official Fedora Linux variant that provides an immutable, KDE Plasma–based desktop system using rpm-ostree for atomic updates and reliability.
-
C.
Combarbalite
Combarbalite is a distinctive semi-precious ornamental stone, prized for its varied colors and patterns, that is uniquely found and traditionally worked in the Combarbalá area of Chile.
-
D.
Néel
Néel is a French surname most notably associated with physicist Louis Néel, a Nobel laureate recognized for his pioneering work in magnetism.
-
E.
Schrieffer
Schrieffer is the surname of John Robert Schrieffer, the American physicist and Nobel laureate known for co-developing the BCS theory of superconductivity.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Sr2CuO2Cl2 Target entity description: Sr2CuO2Cl2 is a layered copper-oxide compound widely studied as a prototypical parent material of high-temperature superconducting cuprates, notable for its strong electron correlations and antiferromagnetic order.
-
A.
Canningite
Canningite refers to a follower or supporter of British statesman George Canning, typically associated with his moderate, liberal Tory political views in the early 19th century.
-
B.
Fedora Kinoite
Fedora Kinoite is an official Fedora Linux variant that provides an immutable, KDE Plasma–based desktop system using rpm-ostree for atomic updates and reliability.
-
C.
Combarbalite
Combarbalite is a distinctive semi-precious ornamental stone, prized for its varied colors and patterns, that is uniquely found and traditionally worked in the Combarbalá area of Chile.
-
D.
Néel
Néel is a French surname most notably associated with physicist Louis Néel, a Nobel laureate recognized for his pioneering work in magnetism.
-
E.
Schrieffer
Schrieffer is the surname of John Robert Schrieffer, the American physicist and Nobel laureate known for co-developing the BCS theory of superconductivity.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Mott insulator
ⓘ
antiferromagnet ⓘ cuprate ⓘ inorganic compound ⓘ layered copper-oxide compound ⓘ |
| belongsToFamily | Sr2CuO2X2 oxyhalides ⓘ |
| chemicalFormula | Sr2CuO2Cl2 ⓘ |
| containsElement |
chlorine
ⓘ
copper ⓘ oxygen ⓘ strontium ⓘ |
| crystalStructure | layered perovskite-like ⓘ |
| dimensionality | quasi-two-dimensional ⓘ |
| hasAnion |
Cl-
ⓘ
O2- ⓘ |
| hasBandGapType | charge-transfer gap ⓘ |
| hasCation |
Cu2+
ⓘ
Sr2+ ⓘ |
| hasCorrelationEffect | Mott-Hubbard localization of carriers ⓘ |
| hasCrystalMotif | alternating CuO2 and SrCl layers ⓘ |
| hasCuValence | +2 ⓘ |
| hasElectronicProperty | strong electron correlations ⓘ |
| hasLayerType |
CuO2 plane
ⓘ
SrCl layer ⓘ |
| hasMagneticDimensionality | two-dimensional Heisenberg antiferromagnet ⓘ |
| hasMagneticInteraction | nearest-neighbor superexchange ⓘ |
| hasMagneticOrder | antiferromagnetic ⓘ |
| hasSpinLattice | square lattice of Cu2+ ions ⓘ |
| hasSpinValue | S=1/2 on Cu2+ sites ⓘ |
| hasSuperexchangePath | Cu–O–Cu ⓘ |
| hasSymmetry | tetragonal (at room temperature) ⓘ |
| isChargeTransferInsulator | true ⓘ |
| isModelSystemFor |
polaron formation in cuprates
ⓘ
spin-charge separation studies ⓘ |
| isNonSuperconductingInUndopedState | true ⓘ |
| isParentCompoundOf | high-temperature superconducting cuprates ⓘ |
| isPrototypeFor |
two-dimensional quantum antiferromagnets
ⓘ
undoped cuprate planes ⓘ |
| isReferenceSystemFor |
Hubbard model studies
ⓘ
t-J model studies ⓘ theory of high-Tc superconductivity ⓘ |
| isStructurallyRelatedTo | La2CuO4 ⓘ |
| isStudiedBy |
Raman spectroscopy
ⓘ
angle-resolved photoemission spectroscopy ⓘ neutron scattering ⓘ optical spectroscopy ⓘ |
| isUndoped | true ⓘ |
| isUsedAs | benchmark cuprate parent compound ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Sr2CuO2Cl2 Description of subject: Sr2CuO2Cl2 is a layered copper-oxide compound widely studied as a prototypical parent material of high-temperature superconducting cuprates, notable for its strong electron correlations and antiferromagnetic order.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.