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  2. Hydrogen bond - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_bond

    In a discrete water molecule, there are two hydrogen atoms and one oxygen atom. The simplest case is a pair of water molecules with one hydrogen bond between them, which is called the water dimer and is often used as a model system. When more molecules are present, as is the case with liquid water, more bonds are possible because the oxygen of ...

  3. Molecular recognition - Wikipedia

    en.wikipedia.org/wiki/Molecular_recognition

    Even for small molecules like carbohydrates, the recognition process can not be predicted or designed even assuming that each individual hydrogen bond's strength is exactly known. [26] However, as Mobley et al. [ 27 ] concluded, the accurate prediction of the molecular recognition events needs to go beyond the static snapshot of a single frame ...

  4. Nucleic acid secondary structure - Wikipedia

    en.wikipedia.org/wiki/Nucleic_acid_secondary...

    Some DNA- or RNA-binding enzymes can recognize specific base pairing patterns that identify particular regulatory regions of genes. Hydrogen bonding is the chemical mechanism that underlies the base-pairing rules described above. Appropriate geometrical correspondence of hydrogen bond donors and acceptors allows only the "right" pairs to form ...

  5. Molecular self-assembly - Wikipedia

    en.wikipedia.org/wiki/Molecular_self-assembly

    Molecular self-assembly is a key concept in supramolecular chemistry. [6] [7] [8] This is because assembly of molecules in such systems is directed through non-covalent interactions (e.g., hydrogen bonding, metal coordination, hydrophobic forces, van der Waals forces, pi-stacking interactions, and/or electrostatic) as well as electromagnetic interactions.

  6. Hoogsteen base pair - Wikipedia

    en.wikipedia.org/wiki/Hoogsteen_base_pair

    Hoogsteen pointed out that if the alternative hydrogen-bonding patterns were present in DNA, then the double helix would have to assume a quite different shape. Hoogsteen base pairs are observed in alternative structures such as the four-stranded G-quadruplex structures that form in DNA and RNA.

  7. Water dimer - Wikipedia

    en.wikipedia.org/wiki/Water_dimer

    The water dimer consists of two water molecules loosely bound by a hydrogen bond. It is the smallest water cluster . Because it is the simplest model system for studying hydrogen bonding in water, it has been the target of many theoretical [ 1 ] [ 2 ] [ 3 ] (and later experimental) studies that it has been called a "theoretical Guinea pig".

  8. Hydrogen-bonded organic framework - Wikipedia

    en.wikipedia.org/wiki/Hydrogen-bonded_organic...

    Hydrogen bonds formed among various monomers guarantee the construction of hydrogen-bonded organic frameworks with different assembly architectures. [15] [16] [17] The constitution of the hydrogen pairs is based on the structural and functional design of the HOFs, therefore different hydrogen bonding pairs should be selected following systematic requirements.

  9. Chemical bonding of water - Wikipedia

    en.wikipedia.org/wiki/Chemical_bonding_of_water

    Isovalent hybridization is used to explain bond angles of those molecules that is inconsistent with the generalized simple sp, sp 2 and sp 3 hybridization. For molecules containing lone pairs, the true hybridization of these molecules depends on the amount of s and p characters of the central atom which is related to its electronegativity.

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