Lewis base
E585212
A Lewis base is a chemical species that donates an electron pair to form a covalent bond, as defined in Lewis acid–base theory.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Lewis base canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T6306445 — 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: Lewis base Context triple: [Gilbert N. Lewis, hasConceptNamedAfter, Lewis base]
-
A.
Arrhenius base
An Arrhenius base is a substance that increases the concentration of hydroxide ions (OH⁻) in aqueous solution, according to the Arrhenius theory of acids and bases.
-
B.
Corey–Chaykovsky reagent
The Corey–Chaykovsky reagent is an organosulfur ylide reagent widely used in organic synthesis to convert carbonyl compounds into epoxides and aziridines.
-
C.
Eschenmoser
Eschenmoser is a Swiss surname most notably associated with Albert Eschenmoser, a prominent organic chemist known for his pioneering work in the synthesis of complex natural products and studies on the origin of life.
-
D.
Buchwald–Hartwig amination
The Buchwald–Hartwig amination is a palladium-catalyzed cross-coupling reaction that forms carbon–nitrogen bonds by coupling aryl (or vinyl) halides with amines, widely used in the synthesis of pharmaceuticals and fine chemicals.
-
E.
Ziegler–Natta catalysts
Ziegler–Natta catalysts are a class of organometallic catalysts used industrially to produce stereoregular polyolefins such as polyethylene and polypropylene under relatively mild conditions.
- 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: Lewis base Target entity description: A Lewis base is a chemical species that donates an electron pair to form a covalent bond, as defined in Lewis acid–base theory.
-
A.
Arrhenius base
An Arrhenius base is a substance that increases the concentration of hydroxide ions (OH⁻) in aqueous solution, according to the Arrhenius theory of acids and bases.
-
B.
Corey–Chaykovsky reagent
The Corey–Chaykovsky reagent is an organosulfur ylide reagent widely used in organic synthesis to convert carbonyl compounds into epoxides and aziridines.
-
C.
Eschenmoser
Eschenmoser is a Swiss surname most notably associated with Albert Eschenmoser, a prominent organic chemist known for his pioneering work in the synthesis of complex natural products and studies on the origin of life.
-
D.
Buchwald–Hartwig amination
The Buchwald–Hartwig amination is a palladium-catalyzed cross-coupling reaction that forms carbon–nitrogen bonds by coupling aryl (or vinyl) halides with amines, widely used in the synthesis of pharmaceuticals and fine chemicals.
-
E.
Ziegler–Natta catalysts
Ziegler–Natta catalysts are a class of organometallic catalysts used industrially to produce stereoregular polyolefins such as polyethylene and polypropylene under relatively mild conditions.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
acid–base concept
ⓘ
chemical species ⓘ electron-pair donor ⓘ |
| broaderThan | Brønsted–Lowry base ⓘ |
| canBe |
anion
ⓘ
neutral molecule ⓘ pi-bonded species ⓘ pi-donor ligand ⓘ sigma-donor ligand ⓘ |
| canBeClassifiedBy | hard–soft acid–base theory ⓘ |
| centralConceptIn | Lewis acid–base theory ⓘ |
| contrastsWith | Lewis acid ⓘ |
| definedIn | Lewis acid–base theory ⓘ |
| donates | electron pair ⓘ |
| example |
alkenes
ⓘ
alkynes ⓘ amines ⓘ ammonia ⓘ carbon monoxide ⓘ chloride ion ⓘ cyanide ion ⓘ ethers ⓘ hydroxide ion ⓘ phosphines ⓘ water ⓘ |
| forms |
coordinate covalent bond
ⓘ
dative bond ⓘ |
| formsAdductWith | Lewis acid ⓘ |
| hasElectronPair | lone pair ⓘ |
| hasProperty |
acts as ligand toward metal center
ⓘ
can share electron density ⓘ |
| hasRoleIn | acid–base reaction ⓘ |
| interactsWith | Lewis acid ⓘ |
| isCharacterizedBy |
availability of lone pair
ⓘ
high electron density ⓘ nucleophilicity ⓘ |
| mayBe |
Brønsted–Lowry base
ⓘ
linked to:
Brønsted–Lowry acid–base theory
hard base ⓘ soft base ⓘ |
| mayNotBe | Brønsted–Lowry base ⓘ |
| namedAfter | Gilbert N. Lewis ⓘ |
| participatesIn |
complex formation
ⓘ
coordination chemistry ⓘ |
| relatedTo |
Brønsted–Lowry base
ⓘ
linked to:
Brønsted–Lowry acid–base theory
nucleophile ⓘ |
| stabilizes | electron-deficient species ⓘ |
| usedIn |
catalysis
ⓘ
coordination chemistry ⓘ inorganic chemistry ⓘ organic chemistry ⓘ |
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: Lewis base Description of subject: A Lewis base is a chemical species that donates an electron pair to form a covalent bond, as defined in Lewis acid–base theory.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.