The word "alkylidene" is spelled phonetically as "ælˈkɪlɪdiːn". The first syllable "æl" is pronounced with a short "a" sound, followed by "kɪl" which is the stressed syllable with a short "i" sound. The third syllable "idiːn" ends with a long "e" sound and is emphasized. The word is commonly used in chemical terminology to describe a compound containing two carbon atoms connected by a double bond and having one or more alkyl groups attached to one of the carbons.
Alkylidene is a term used in organic chemistry to describe a type of functional group that contains a carbon atom bonded to another carbon atom by a double bond. This functional group is denoted by the symbol ═C(H₂)-, where the carbon atom adjacent to the double bond is called the α-carbon and the carbon atom bonded to it is called the β-carbon.
The alkylidene group is derived from an alkene (a carbon-carbon double bond) by removing two hydrogen atoms from the same carbon atom. This results in a structure where the carbon atoms on either side of the double bond are each bonded to three other atoms or groups. The alkylidene group can be either straight-chain or branched, depending on the organic molecule it is part of.
Alkylidenes are highly reactive and can undergo various chemical reactions due to the presence of the electron-rich double bond. They can serve as reactants in organic synthesis or participate in reactions such as addition, elimination, or substitution reactions. Alkylidenes can also be involved in π-complexation with transition metals, leading to the formation of metal-alkylidene complexes, which are often key intermediates in catalytic processes.
Overall, alkylidenes play a significant role in organic chemistry due to their reactivity and versatility, and their presence in many natural and synthetic compounds.
The word "alkylidene" is derived from the combination of two terms: "alkyl" and "idene".
1. "Alkyl": The term "alkyl" refers to a type of hydrocarbon compound derived from an alkane by removing one hydrogen atom. Alkyl groups are characterized by a carbon atom attached to the rest of the molecule through a single bond, and they can be found in various organic compounds.
2. "-idene": The suffix "-idene" is commonly used in organic chemistry to denote a compound or group containing a double bond between two carbon atoms.
Therefore, when the terms "alkyl" and "-idene" are combined, "alkylidene" refers to a compound or group containing a double bond between two carbon atoms, specifically in the context of alkyl groups.