Carbonyl Double Bond

The carbonyl double bond is a polar covalent bond between carbon and oxygen, written C=O, that defines the structure and reactivity of many carbonyl compounds in chemistry. It consists of one σ bond and one π bond formed by orbital overlap; because oxygen attracts electron density more strongly, the bond carries partial negative charge on oxygen and partial positive charge on carbon, making the carbon susceptible to nucleophilic attack. This electronic arrangement governs reactions such as nucleophilic addition in aldehydes and ketones and influences the behavior of carboxylic acids, esters, amides, and related derivatives, providing a foundation for organic synthesis, biomolecular chemistry, and spectroscopic identification.

Carbonyl Double Bond - Related Videos

Education

JoVE Core - Chemistry

Bond Energies and Bond Lengths

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2020

Stable molecules exist because covalent bonds hold the atoms together. The strength of a covalent bond is measured by the energy required to break it, that is, the energy necessary to separate the bonded atoms. Separating any pair of bonded atoms requires energy — the stronger a bond, the greater the energy required to break it. The energy required to break a specific covalent bond in one mole of gaseous molecules is called the bond energy or the bond dissociation energy. The bond energy for a...

Bonding in Metals

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2020

Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”. Electron Sea Model Most metal atoms do not possess enough valence electrons to enter into an ionic or covalent bonding. However, the valence electrons in metal atoms are loosely held due to their low electronegativity or attraction with the nucleus. The ionization energy of metal atoms (energy required to remove an electron from...

Research

JoVE Journal - Chemistry

Determination of Carbonyl Functional Groups in Bio-oils by Potentiometric Titration: The Faix Method

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Cited by 5 •

2017

Here we present a potentiometric titration technique for accurately quantifying carbonyl compounds in pyrolysis bio-oils.

Valence Bond Theory

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2020

Overview of Valence Bond Theory Valence bond theory describes a covalent bond as the overlap of half-filled atomic orbitals (each containing a single electron) that yield a pair of electrons shared between the two bonded atoms. The orbitals on two different atoms overlap when a portion of one orbital and a portion of a second orbital occupy the same region of space. According to valence bond theory, a covalent bond results when two conditions are met: (1) an orbital on one atom overlaps an...

Covalent Bonding and Lewis Structures

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2020

Compared to ionic bonds, which results from the transfer of electrons between metallic and nonmetallic atoms, covalent bonds result from the mutual attraction of atoms for a “shared” pair of electrons. Covalent bonds are formed between two atoms when both have similar tendencies to attract electrons to themselves (i.e., when both atoms have identical or fairly similar ionization energies and electron affinities). Physical Properties of Covalent Compounds Compounds that contain covalent...

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