Directed polar interaction between a H bonded to N, O or F and a N, O or F atom. Click here for more information
a chemical bond formed between a hydrogen atom and two other atoms; hydrogen bonds have only about 1/20 the strength of a covalent bond.
An intermolecular bond formed with hydrogen.
attraction between an electron deficient hydrogen (bound to a highly electronegative atom) and non-bonding electrons on other atoms
noncovalent bond between an electronegative atom (commonly oxygen or nitrogen) and a hydrogen atom covalently bonded to another electronegative atom. Particularly important in stabilizing the three-dimensional structure of proteins and formation of base pairs in nucleic acids.
Weak chemical bond between two molecules or parts of the same molecule, in which negative region of one polarized substance is electrostatically attracted to a positively polarized hydrogen atom in the other.
a weak chemical bond that forms between the positively charged hydrogen atom and one covalently bonded molecule and the negatively charges area of another covalently bonded molecule.
A type of weak chemical bond formed when the slightly positive hydrogen atom of a polar covalent bond in one molecule is attracted to the slightly negative atom of a polar covalent bond in another molecule. hydrolysis(hy- drol-eh-sis) [L. hydro, water + Gk. lysis, loosening] A chemical process that lyses or splits molecules by the addition of water; an essential process in digestion.
intermolecular force in which a hydrogen atom that is covalently bonded to a very electronegative atom is also weakly bonded to an unshared electron pair of an electronegative atom in the same molecule or one nearby; an exceptionally strong type of dipole interaction.
(physical bond) â€“ the molecular association between an atom of hydrogen and an atom of oxygen in the hair forming an electormagnetic bond. Gives strength and elasticity to hair and form to the hair when it is dry.
A weak chemical interaction between an electronegative atom (e.g. nitrogen or oxygen) and a hydrogen atom that is covalently attached to another atom. This bond maintains the two-helices of DNA together and is also the primary interaction between water molecules.
A hydrogen atom covalently bound to an electronegative atom (e.g., nitrogen, oxygen) has a significant positive charge and can form a weak bond to another electronegative atom; this is termed a hydrogen bond.
A weak, non-covalent electrostatic attraction between molecules where the positively charged hydrogen atom of one molecule is attracted to the negatively charged oxygen atom in another molecule.
a weak, secondary bond between a partially positive hydrogen atom and a partially negative N, O, or F atom. An inter-molecular force of attraction.
a relatively strong intermolecular force in which a hydrogen atom covalently bonded to a very electronegative atom is also weakly bonded to an unshared electron pair of a strongly electronegative atom in the same or adjacent molecule
A weak bond between hydrogen and a set of other elements, including oxygen. Hydrogen bonds are a subset of dipole-dipole interactions.
The bond formed when the positive end of one polar molecule, such as water, is attracted to the negative end of another polar molecule.
hydrogen bonding. An especially strong dipole-dipole force between molecules X-H...Y, where X and Y are small electronegative atoms (usually F, N, or O) and ... denotes the hydrogen bond. Hydrogen bonds are responsible for the unique properties of water and they loosely pin biological polymers like proteins and DNA into their characteristic shapes.
Weak noncovalent interaction (mainly electrostatic) bond between a significantly positive hydrogen atom and an electronegative atom (usually nitrogen, oxygen, or fluorine); consequently, an important structural element in water, proteins, and other biopolymers, as well as in the recognition (specific binding) of small molecules by biopolymers.
a chemical bond consisting of a hydrogen atom between two electronegative atoms (e.g., oxygen or nitrogen) with one side be a covalent bond and the other being an ionic bond
a chemical bond that is formed between polar molecules that contain a hydrogen atom covalently bonded to a small, highly electronegative atom such as fluorine, oxygen or nitrogen
a coordinate covalent bond between a hydrogen atom and an electronegative atom such as O, N or F
an attractive electrostatic force between a hydrogen atom and an electronegative atom such as O, N or F
an electrostatic attraction between hydroxyl(OH) parts of a molecule and other charged parts of the same or different molecules
an interaction between a proton donor group D-H and a proton acceptor atom A
an ionic bond between a hydrogen atom and an electronegative atom such as O, N or F
a non-covalent bond between a partial negative charge and a partial positive charge
a polar interaction between two electronegative atoms, a donor, and an acceptor
a type of intermolecular force between charges located on different molecules or different parts of one large molecule
a weak attraction between the slightly positive area of a covalently bonded hydrogen atom and the slightly negative area of a covalently bonded atom (usually oxygen or nitrogen) of another molecule
a WEAK Bond that can be easily broken
A weak bond between molecules, or different parts of the same molecule, formed by a restricted form of sharing of electrons between atoms. Readily formed between -OH (hydroxyl) and NH2 (amino) groups and oxygen or nitrogen atoms. They are important in proteins and are the mechanism for base-pairing in nucleic acids. They are easily disrupted by heat. They are responsible for base-pairing in nucleic acids and for the maintenance of 3D structure in proteins.
A type of chemical bond caused by elecromagnetic forces, occuring when the positive pole of one molecule (e.g. water) is attracted to and forms a bond with the negative pole of another molecule (e.g. another water molecule).
A bond formed by a hydrogen atom to an electronegative atom, and is denoted --- H-B.
An interaction between an electropositive hydrogen (bonded to an electronegative atom) and an electronegative atom it is not bonded to.
A relatively weak bond formed between a hydrogen atom (which is covalently bound to a nitrogen or oxygen atom) and a nitrogen or oxygen atom with an unshared electron pair. Weak interactions between electro-negative atoms and hydrogen atoms (electro-positive) that are linked to other electro-negative atoms.
a very strong attraction between a hydrogen atom which is attached to an electronegative atom, and an electronegative atom which is usually on another molecule. For example, the hydrogen atoms on one water molecule are very strongly attracted to the oxygen atoms on another water molecule.
(H-bonding). An electrostatic attraction between a hydrogen atom in one polar molecule (as of water) and a small electronegative atom (as of oxygen, nitrogen, or fluorine) in usually another molecule of the same or a different polar substance.
a strong secondary interatomic bond which exists between a bound hydrogen atom (its unscreened proton) and the electrons of adjacent atoms.
A weak bond between two atoms (one of which is hydrogen) with partial but opposite electrical charges.
The electrical attraction between the slightly positive hydrogen atoms of one molecule and a slightly negative atoms in another molecule.
The hydrogen atoms in water are very positive, because the oxygen atom strongly withdraws the electrons in the O-H bonds. The hydrogen atoms on adjacent molecules are attracted to the oxygen atoms forming a bond which is stronger than the usual polar attraction, but less strong than a typical covalent bond. This accounts for the very high boiling point of water compared with other similar weight molecules.
a special type of intermolecular interaction whereby the hydrogen of one molecule is attracted to the oxygen, nitrogen, or flourine of another molecule (if the molecule is large enough to fold on itself, this attraction can be between the hydrogen of one molecule and an oxygen, nitrogen or flourine of the same molecule). This interaction will increase the overall stability of the substance or molecule. www.biologylessons.sdsu.edu/ta/classes/lab3/glossary.html
A chemical bond which arises from the attraction between the slight positive charge on a hydrogen atom and a slight negative charge on a nearby fluorine, oxygen, or nitrogen atom. Weak bonds, but found in great quantities in proteins, nucleic acids, and other biological macromolecules.
The electrons in a water molecule are not distributed equally, because the oxygen atom is a bigger, more robust fellow which grabs more than its fair share. The end result is that the oxygen atom has an overall negative charge, while the two hydrogen atoms are left feeling somewhat on the positive side. This unequal distribution of charge means that the hydrogen atoms are attracted to anything with a negative bias; for example, the oxygen atom of another water molecule. The resulting bond is known as a hydrogen bond.
the weak electrostatic attraction that exists between a hydrogen atom that is covalently bonded to an O or N atom and an atom containing an unshared electron pair
A weak bond between two atoms formed when a hydrogen atom is shared between two atoms, one of which is usually oxygen; primarily of importance in the structure of nucleic acids and proteins.
The interaction of two molecules through the attraction of a largely positively charged hydrogen on one molecule to a largely negatively charged atom on the opposite molecule.
A fairly strong dipole-dipole interaction (but still considerably weaker than the covalent or ionic bonds) between molecules containing hydrogen directly bonded to a small, highly electronegative atom, such as N, O, or F.
A relatively weak, localised bond between the polar hydroxyl groups of water and the hydroxyl groups on starch. The actual bond is between the negatively charged oxygen and the positively charged hydrogen. Hydrogen bonds are of fundamental importance in the behaviour of starch and its derivatives as they play a role in granule structure, gelatinisation, retrogradation, viscosity stability etc.
A weak interaction between the hydrogen atom on one molecule and a negatively charged portion of another molecule.
A dipole-dipole attraction in which a hydrogen atom bridges two electronegative atoms. One half of the hydrogen bond is a covalent bond and the other is an electrostatic bond. The example below shows the hydrogen bonds formed between cytosine and guanine. Figure 5 Hydrogen Bonding
weak link between a hydrogen atom and an electronegative element such as nitrogen or oxygen
The weak attraction between a hydrogen atom carrying a partial positive charge and some other atom with a partial negative charge.
A weak bond between hydrogen and another atom (usually oxygen, fluorine, or nitrogen). Hydrogen bonds are critical in the formation of many biological molecules, including DNA and proteins.
A strong dipole-dipole attraction between two or more molecules, at least one of which has a hydrogen atom bonded to an electron-withdrawing atom. More specifically, a weak bond formed between a hydrogen atom on one molecule which has developed a partial positive charge because of its bonding to an electronegative atom (commonly N, O, or F) and an electronegative atom on another molecule.
A hydrogen bond is a special type of attractive interaction that exists between an electronegative atom and a hydrogen atom bonded to another electronegative atom. This type of bond always involves a hydrogen atom, thus the name. Hydrogen bonds can occur between molecules (intermolecularly), or within different parts of a single molecule (intramolecularly).Compendium of Chemical Terminology, http://goldbook.iupac.org/H02899.html hydrogen bond, accessed 15 Jan 2007.