COPPER(I) OXIDE

An inorganic compound, Cu2O, 143.091 g/mol. Boiling point Decomp at 1800 °C, melting point 1235 °C, as published.

verified recordInorganic compound6 measured properties

Identifiers

Molecular formula: Cu₂O
Molecular weight: 143.091 g/mol
Exact mass: 141.85411 g/mol
IUPAC name: copper;oxocopper
SMILES: [Cu]O[Cu]
InChI: InChI=1S/2Cu.O
InChIKey: BERDEBHAJNAUOM-UHFFFAOYSA-N

Open in ReactionLens Use in reaction prediction

Measured properties

Published measurements, each with its source. Two readings of one property are both shown, in the units each used.

Boiling Point: Decomp at 1800 °Cmeasured · Hazardous Substances Data Bank (HSDB)
Melting Point: 1235 °Cmeasured · Hazardous Substances Data Bank (HSDB); 1232 °Cmeasured · ILO-WHO International Chemical Safety Cards (ICSCs)
Density: 6.0measured · Hazardous Substances Data Bank (HSDB); Relative density (water = 1): 6.0measured · ILO-WHO International Chemical Safety Cards (ICSCs)
Solubility: Crimson, scarlet, vermilion, deep or brownish-red, secondary mineral; adamantine or dull luster; brownish red streak; sol in nitric and concentrated hydrochloric acids; specific gravity: 5.85-6.15; Momeasured · Hazardous Substances Data Bank (HSDB); Soluble in ammonium hydroxide; in hydrochloric acid forming copper(I) chloride which dissolves in excess hydrochloric acid; with dil sulfuric acid or dil nitric acid the cupric salt is formed and halfmeasured · Hazardous Substances Data Bank (HSDB)
Vapor Pressure: Negligiblemeasured · Hazardous Substances Data Bank (HSDB)
Refractive Index: INDEX OF REFRACTION: 2.705measured · Weast, R.C. (ed.) Handbook of Chemistry and Physics. 69th ed. Boca Raton, FL: CRC Press Inc., 1988-1989., p. B-89

Calculated properties

Derived from the structure, not from a sample; kept apart from the measurements above.

Molecular weight: 143.09 g/molcalculated · reference compound database; Average mass of one molecule, from reference compound database.
Exact mass: 141.854109 Dacalculated · reference compound database; Mass of the most common isotopic form.
Polar surface area: 17.1 Å²calculated · reference compound database; Polar surface area as computed by reference compound database.
Complexity: 2calculated · reference compound database; A rough measure of how intricate the structure is.
H-bond donors: 0calculated · reference compound database
H-bond acceptors: 1calculated · reference compound database
logP: -0.0734calculated · chemistry engine; Estimated preference for oil over water. Higher means more oil-like.
Topological polar surface area: 9.23 Å²calculated · chemistry engine; Surface area from polar atoms; relates to how easily a molecule crosses membranes.
H-bond donors: 0calculated · chemistry engine; Atoms that can donate a hydrogen bond.
H-bond acceptors: 1calculated · chemistry engine; Atoms that can accept a hydrogen bond.
Rotatable bonds: 0calculated · chemistry engine; Single bonds the molecule can freely twist around.
Molar refractivity: 1.085 cm³/molcalculated · chemistry engine; Relates to the molecule's polarisability.
Fraction sp³ carbons: 0calculated · chemistry engine; Share of carbon atoms with tetrahedral bonding.
QED drug-likeness: 0.431calculated · chemistry engine; Quantitative estimate of drug-likeness (0–1).

What it is made of

Elements

Cu Copper2 atoms · 88.8% by mass
O Oxygen1 atom · 11.2% by mass

Percentages are of the molecular weight above, worked out the same way the molar mass calculator does it.

Structure

Heavy atoms, hydrogen excluded: 3
Total atoms, hydrogen included: 3
Rings: 0
Aromatic rings: 0
Stereocentres: 0
Formal charge: 0

The molecule in three dimensions

Rotate and inspect the atoms. Loaded only when you ask, so the page stays light.

The drawing above is a diagram of what is bonded to what. A molecule is not flat, and the model here is one low-energy shape generated from the connectivity — useful for seeing which groups can reach each other, and not a measured structure. A real sample is a population of conformations, interconverting.

Reactions it appears in

No documented reaction with a written procedure and a source involves COPPER(I) OXIDE yet.

Other names for it

The systematic name on this record is copper;oxocopper.

The sources also call it (cupriooxy)copper, RefChem:1082154, Brown copper oxide, Caocobre, Caswell No. 266, CI 77402, Copox, copper (I) oxide, Copper hemioxide, Copper Nordox, Copper oxide (Cu2O), Copper oxide, red.

Structurally related

Nothing structurally close to COPPER(I) OXIDE has a page here yet.

Seen alongside it in reaction records

Molecules that appear in the same recorded reactions as COPPER(I) OXIDE. This says nothing about structure: most of them are the bases, solvents, ligands and catalysts the chemistry needed, and they are here because somebody put them in the same flask.

1,3-dicyclohexyl-1H-imidazol-3-ium chloride

C₁₅H₂₅ClN₂, 268.832 g/mol.

1,3-bis(2,6-dibenzhydryl-4-methoxyphenyl)-1H-imidazol-3-ium-2-ide

C₆₉H₅₈N₂O₂, 947.235 g/mol.

1,3-Bis(1-adamantyl)imidazolium tetrafluoroborate

C₂₃H₃₃BF₄N₂, 424.335 g/mol.

1,3-Bis(2,6-di(pentan-3-yl)phenyl)-1H-iMidazol-3-iuM chloride

C₃₅H₅₃ClN₂, 537.276 g/mol.

1,3-BIS(2,6-DIISOPROPYLPHENYL)-IMIDAZOLIDINIUM-CHLORIDE

C₂₇H₃₇ClN₂, 425.06 g/mol.

(1R,2R)-N,N'-Dimethyl-1,2-cyclohexanediamine

C₈H₁₈N₂, 142.246 g/mol.

Where these values came from

reference compound database18346908
compound record
chemistry engine
structure perception

compound record.

What this page does not claim

Identifiers are copied from the source record, measured values are reported as published, and calculated values are marked as calculated. Nothing here is a hazard, purity or handling assessment — how the library is checked.