Cyclobutane

A hydrocarbon, C4H8, 56.108 g/mol. Boiling point 13.08 °C @ 741 MM HG, melting point -80 °C, as published.

verified recordOrganic — hydrocarbon7 measured properties

Identifiers

Molecular formula: C₄H₈
Molecular weight: 56.108 g/mol
Exact mass: 56.0626 g/mol
IUPAC name: cyclobutane
SMILES: C1CCC1
InChI: InChI=1S/C4H8/c1-2-4-3-1/h1-4H2
InChIKey: PMPVIKIVABFJJI-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: 13.08 °C @ 741 MM HGmeasured · Budavari, S. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Whitehouse Station, NJ: Merck and Co., Inc., 1996., p. 457
Melting Point: -80 °Cmeasured · Budavari, S. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Whitehouse Station, NJ: Merck and Co., Inc., 1996., p. 457
Flash Point: BELOW 50 °F Closed Cupmeasured · Lewis, R.J. Sax's Dangerous Properties of Industrial Materials. 9th ed. Volumes 1-3. New York, NY: Van Nostrand Reinhold, 1996., p. 952
Solubility: INSOL IN WATER; FREELY SOL IN ALCOHOL, ACETONEmeasured · Budavari, S. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Whitehouse Station, NJ: Merck and Co., Inc., 1996., p. 457; Sol in ethanol, ether, and acetonemeasured · Lide, D.R. (ed.). CRC Handbook of Chemistry and Physics. 76th ed. Boca Raton, FL: CRC Press Inc., 1995-1996., p. 3-116
Density: 0.7038 AT 0 °C; 0.7125 @ 5 °Cmeasured · Budavari, S. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Whitehouse Station, NJ: Merck and Co., Inc., 1996., p. 457
Vapor Pressure: 1.18X10+3 mm Hg @ 25 °Cmeasured · Daubert, T.E., R.P. Danner. Physical and Thermodynamic Properties of Pure Chemicals Data Compilation. Washington, D.C.: Taylor and Francis, 1989.
Refractive Index: INDEX OF REFRACTION: 1.3625 @ 290 °C/Dmeasured · Lide, D.R. (ed.). CRC Handbook of Chemistry and Physics. 76th ed. Boca Raton, FL: CRC Press Inc., 1995-1996., p. 3-116

Calculated properties

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

Molecular weight: 56.11 g/molcalculated · reference compound database; Average mass of one molecule, from reference compound database.
Exact mass: 56.062600255 Dacalculated · reference compound database; Mass of the most common isotopic form.
XLogP3: 2.5calculated · reference compound database; Estimated oil/water partition, computed by reference compound database.
Polar surface area: 0 Å²calculated · reference compound database; Polar surface area as computed by reference compound database.
Complexity: 8calculated · reference compound database; A rough measure of how intricate the structure is.
H-bond donors: 0calculated · reference compound database
H-bond acceptors: 0calculated · reference compound database
logP: 1.5604calculated · chemistry engine; Estimated preference for oil over water. Higher means more oil-like.
Topological polar surface area: 0 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: 0calculated · chemistry engine; Atoms that can accept a hydrogen bond.
Rotatable bonds: 0calculated · chemistry engine; Single bonds the molecule can freely twist around.
Molar refractivity: 18.468 cm³/molcalculated · chemistry engine; Relates to the molecule's polarisability.
Fraction sp³ carbons: 1calculated · chemistry engine; Share of carbon atoms with tetrahedral bonding.
QED drug-likeness: 0.3948calculated · chemistry engine; Quantitative estimate of drug-likeness (0–1).

What it is made of

Elements

C Carbon4 atoms · 85.6% by mass
H Hydrogen8 atoms · 14.4% 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: 4
Total atoms, hydrogen included: 12
Rings: 1
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 Cyclobutane yet.

Other names for it

The systematic name on this record is cyclobutane.

The sources also call it Tetramethylene, UNII-5X619RB2CY, HSDB 58, 5X619RB2CY, EINECS 206-014-5, DTXSID2059772, CHEBI:30377, RefChem:5716, DTXCID6037853, UN2601, Cyclobutane [UN2601] [Flammable gas].

Structurally related

Nothing structurally close to Cyclobutane has a page here yet.

Where these values came from

reference compound database9250
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.