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Structure of Cyclopenta-1,2-diene (C5H6)

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2D chemical structure image of Cyclopenta-1,2-diene
Chemical Formula C5H6
Molecular Weight 66.10114 g/mol
IUPAC Name cyclopenta-1,2-diene
SMILES String C1CC=C=C1
InChI InChI=1S/C5H6/c1-2-4-5-3-1/h1,5H,2,4H2
InChIKey VRNCRGHDRGGBLW-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 Cyclopenta-1,2-diene 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 Cyclopenta-1,2-diene are given below:

2D chemical structure image of Cyclopenta-1,2-diene
2-dimensional (2D) chemical structure image of Cyclopenta-1,2-diene
3D chemical structure image of Cyclopenta-1,2-diene
3-dimensional (3D) chemical structure image of Cyclopenta-1,2-diene

The 2D chemical structure image of Cyclopenta-1,2-diene is also called skeletal formula, which is the standard notation for organic molecules. The carbon atoms in the chemical structure of Cyclopenta-1,2-diene 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 Cyclopenta-1,2-diene 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 Cyclopenta-1,2-diene. 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 Cyclopenta-1,2-diene is provided here.

The Cyclopenta-1,2-diene 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 Cyclopenta-1,2-diene 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 Cyclopenta-1,2-diene 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.


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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 Cyclopenta-1,2-diene Molecule

  • Other names (synonyms) or registry numbers of Cyclopenta-1,2-diene

    The Cyclopenta-1,2-diene compound may be called differently depending on the various different situations of industrial applications. Below are the list of the other names (synonyms) of Cyclopenta-1,2-diene including the various registry numbers, if available:

    • 1,2-Cyclopentadiene
    • 50682-89-8

Cyclopenta-1,2-diene Identification Summary Frequently Asked Questions (FAQs)

What’s the chemical formula of Cyclopenta-1,2-diene?
C5H6
How many atoms and what are the elements included the Cyclopenta-1,2-diene 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 Cyclopenta-1,2-diene 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 Cyclopenta-1,2-diene’s molecular weight?
66.10114 g/mol
What’s the SMILES code of Cyclopenta-1,2-diene?
C1CC=C=C1
What’s the InChI string of Cyclopenta-1,2-diene?
InChI=1S/C5H6/c1-2-4-5-3-1/h1,5H,2,4H2
What’s the InChIKey code of Cyclopenta-1,2-diene?
VRNCRGHDRGGBLW-UHFFFAOYSA-N