page_title: Allenes
hierarchical_section_title: Allenes
context_page_description: Allenes are organic compounds in which one carbon atom has double bonds with each of its two adjacent carbon centres. Allenes are classified as cumulated dienes. The parent compound of this class is propadiene, which is itself also called allene. Compounds with an allene-type structure but with more than three carbon atoms are members of a larger class of compounds called cumulenes with X=C=Y bonding. Unlike polyenes, the two double bonds do not exhibit resonance.
context_section_description: Allenes are organic compounds in which one carbon atom has double bonds with each of its two adjacent carbon centres.  Allenes are classified as cumulated dienes. The parent compound of this class is propadiene, which is itself also called allene. Compounds with an allene-type structure but with more than three carbon atoms are members of a larger class of compounds called cumulenes with X=C=Y bonding. Unlike polyenes, the two double bonds do not exhibit resonance.
caption: Propadiene, the simplest allene, is also known as allene
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