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Related Concept Videos

Hydrogen Bonds00:26

Hydrogen Bonds

134.5K
Hydrogen bonds are weak attractions between atoms that have formed other chemical bonds. One of these atoms is electronegative, like oxygen, and has a partial negative charge. The other is a hydrogen atom that has bonded with another electronegative atom and has a partial positive charge.
Hydrogen Bonds Control the World!
Because hydrogen has very weak electronegativity when it binds with a strongly electronegative atom, such as oxygen or nitrogen, electrons in the bond are unequally shared....
134.5K
Hydrogen Bonds01:04

Hydrogen Bonds

15.1K
A hydrogen bond is formed when a weakly positive hydrogen atom already bonded to one electronegative atom (for example, the oxygen in the water molecule) is attracted to another electronegative atom from another polar molecule, such as water (H2O), hydrogen fluoride (HF), or ammonia (NH3). The huge electronegativity difference between the H atom (2.1) and the atom to which it is bonded (4.0 for an F atom, 3.5 for an O atom, or 3.0 for an N atom), combined with the very small size of an H atom...
15.1K
IR Spectrum Peak Broadening: Hydrogen Bonding01:23

IR Spectrum Peak Broadening: Hydrogen Bonding

1.9K
The vibrational frequency of a bond is directly proportional to its bond strength. As a result, stronger bonds vibrate at higher frequencies, while weaker bonds vibrate at lower frequencies. The stretching vibration of the strong O–H bond in alcohols and phenols (very dilute solution or gas phase) appears as a sharp peak at 3600–3650 cm−1.
However, the extent of hydrogen bonding influences the observed stretching frequency and band broadening. Intermolecular or intramolecular...
1.9K
Valence Bond Theory02:45

Valence Bond Theory

50.4K
Overview of Valence Bond Theory
50.4K
Covalent Bonds01:29

Covalent Bonds

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Overview
163.7K
Bonding in Metals02:32

Bonding in Metals

52.8K
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”. 
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Related Experiment Video

Updated: Feb 11, 2026

A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
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A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions

Published on: August 17, 2016

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Hydrogen Bonds: Simple after All?

Daniel Herschlag, Margaux M Pinney

    Biochemistry
    |April 22, 2018
    PubMed
    Summary
    This summary is machine-generated.

    Recent advances simplify our understanding of hydrogen bonds, revealing fundamental principles for biological structure and dynamics. These insights offer a clearer picture of hydrogen bond structure, dynamics, and energetics, aiding future research.

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    Area of Science:

    • Biochemistry and Molecular Biology
    • Structural Biology

    Background:

    • Hydrogen bonds are crucial for biological structure, function, and dynamics.
    • Previous understanding of hydrogen bonds was fragmented, hindering the extraction of general principles.

    Purpose of the Study:

    • To present recent advances that have led to a simplified understanding of hydrogen bond structure, dynamics, and energetics.
    • To provide a foundation for understanding and teaching these vital interactions.

    Main Methods:

    • Review and synthesis of recent proposals, discussions, and debates on hydrogen bonds.
    • Development and application of a quantitative predictive model for hydrogen bond length.

    Main Results:

    • A remarkably simple picture of hydrogen bond structure has emerged.
    • Clarity has been achieved regarding hydrogen bond energetics, simplifying considered factors.
    • A quantitative model for hydrogen bond length can be broadly applied to analyze protein structures and dynamics.

    Conclusions:

    • Improved understanding of hydrogen bonds aids in evaluating current models and uncovering protein structural features.
    • Quantitative energetic description for protein molecular recognition and catalysis remains a challenge.
    • Five "Rules for Hydrogen Bonding" are proposed as a foundation for future study.