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Structure of Cyclopentadiene (C5H6)

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2D chemical structure image of Cyclopentadiene
Chemical Formula C5H6
Molecular Weight 66.10114 g/mol
IUPAC Name cyclopenta-1,3-diene
SMILES String C1C=CC=C1
InChI InChI=1S/C5H6/c1-2-4-5-3-1/h1-4H,5H2
InChIKey ZSWFCLXCOIISFI-UHFFFAOYSA-N
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Chemical Structure Description

A chemical structure of a molecule includes the arrangement of atoms and the chemical bonds that hold the atoms together. The Cyclopentadiene molecule contains a total of 11 bond(s). There are 5 non-H bond(s), 2 multiple bond(s), 2 double bond(s), and 1 five-membered ring(s). Images of the chemical structure of Cyclopentadiene are given below:

2D chemical structure image of Cyclopentadiene
2-dimensional (2D) chemical structure image of Cyclopentadiene
3D chemical structure image of Cyclopentadiene
3-dimensional (3D) chemical structure image of Cyclopentadiene

The 2D chemical structure image of Cyclopentadiene is also called skeletal formula, which is the standard notation for organic molecules. The carbon atoms in the chemical structure of Cyclopentadiene are implied to be located at the corner(s) and hydrogen atoms attached to carbon atoms are not indicated – each carbon atom is considered to be associated with enough hydrogen atoms to provide the carbon atom with four bonds.

The 3D chemical structure image of Cyclopentadiene is based on the ball-and-stick model which displays both the three-dimensional position of the atoms and the bonds between them. The radius of the spheres is therefore smaller than the rod lengths in order to provide a clearer view of the atoms and bonds throughout the chemical structure model of Cyclopentadiene. Download structure data file (SDF/MOL) file of this compound.


Interactive 3D Visualization

For a better understanding of the chemical structure, an interactive 3D visualization of Cyclopentadiene is provided here.

The Cyclopentadiene molecule shown in the visualization screen can be rotated interactively by keep clicking and moving the mouse button. Mouse wheel zoom is available as well – the size of the Cyclopentadiene molecule can be increased or decreased by scrolling the mouse wheel.

The information of the atoms, bonds, connectivity and coordinates included in the chemical structure of Cyclopentadiene can easily be identified by this visualization. By right-clicking the visualization screen, various other options are available including the visualization of van der Waals surface and exporting to an image file.


Search Another Chemical Structure

Enter another compound to search for chemical structure:

Input a chemical compound consisting of C, H, N, O, S, F, Cl, Br, I, Si, P, and/or As atom(s)

Input example for Ethanol:

  • Name: ethanol
  • CAS #: 64-17-5
  • Formula: C2H5OH
  • Smiles: CCO
  • InChI: InChI=1S/C2H6O/c1-2-3/h3H,2H2,1H3
  • InChIKey: LFQSCWFLJHTTHZ-UHFFFAOYSA-N

Additional Information for Identifying Cyclopentadiene Molecule

  • SMILES (Simplified Molecular-Input Line-Entry System) string of Cyclopentadiene

    The SMILES string of Cyclopentadiene is C1C=CC=C1, which can be can be imported by most molecule editors for conversion back into two-dimensional drawings or three-dimensional models of the Cyclopentadiene.

  • Structure Data File (SDF/MOL File) of Cyclopentadiene

    The structure data file (SDF/MOL File) of Cyclopentadiene is available for download in the SDF page of Cyclopentadiene, which provides the information about the atoms, bonds, connectivity and coordinates of Cyclopentadiene. The Cyclopentadiene structure data file can be imported to most of the cheminformatics software systems and applications.

  • Chemical formula of Cyclopentadiene

    The molecular formula of Cyclopentadiene is available in chemical formula page of Cyclopentadiene, which identifies each constituent element by its chemical symbol and indicates the proportionate number of atoms of each element.

  • Molecular weight of Cyclopentadiene

    The molecular weight of Cyclopentadiene is available in molecular weight page of Cyclopentadiene, which is calculated as the sum of the atomic weights of each constituent element multiplied by the number of atoms of that element in the molecular formula.

  • Other names (synonyms) or registry numbers of Cyclopentadiene

    The Cyclopentadiene compound may be called differently depending on the various different situations of industrial applications. Below are the list of the other names (synonyms) of Cyclopentadiene including the various registry numbers, if available:

    • AR-1I3227
    • 3B1-006047
    • S14-1309
    • A818675
    • CAS-542-92-7
    • 5DFH9434HF
    • cyclo-pentadiene
    • cyclo pentadiene
    • cyclopentadien
    • 26912-33-4
    • Tetrahydrocyclopentadiene
    • R-Pentine
    • 542-92-7
    • Pentole
    • Pyropentylene
    • 1,3-CYCLOPENTADIENE
    • Cyclopentadiene

Cyclopentadiene Identification Summary Frequently Asked Questions (FAQs)

What’s the chemical formula of Cyclopentadiene?
C5H6
How many atoms and what are the elements included the Cyclopentadiene molecule?
11 atom(s) - 6 Hydrogen atom(s) and 5 Carbon atom(s)
How many chemical bonds and what kind of bonds are included the Cyclopentadiene structure?
11 bond(s) - 5 non-H bond(s), 2 multiple bond(s), 2 double bond(s), and 1 five-membered ring(s)
What’s the Cyclopentadiene’s molecular weight?
66.10114 g/mol
What’s the SMILES code of Cyclopentadiene?
C1C=CC=C1
What’s the InChI string of Cyclopentadiene?
InChI=1S/C5H6/c1-2-4-5-3-1/h1-4H,5H2
What’s the InChIKey code of Cyclopentadiene?
ZSWFCLXCOIISFI-UHFFFAOYSA-N