Both covalent and hydrogen bonds are forms of intermolecular forces. Covalent bonds can occur with most elements on the periodic table, while hydrogen bonds usually occur between a hydrogen atom and an oxygen, nitrogen, or fluorine molecule. Also, hydrogen bonds are only about 1/10 as strong as...
The covalent-like characteristics of hydrogen bonds offer a new perspective on intermolecular interactions. Here, using density functional theory and post-Hartree-Fock methods, we reveal that there are two bonding molecular orbitals (MOs) crossing the O and H atoms of the hydrogen-bond in water ...
In some older formulations of Lewis structures, a distinction was made between bonds formed by electrons that have been supplied by both atoms (as in H―Cl, where one shared electron can be regarded as supplied by the hydrogen atom and the other by the chlorine atom) and covalent bonds form...
Water has the formula of H2O= one oxygen atom + two hydrogen atoms The atomic composition of oxygen compared to that of hydrogen is far more attractive to electrons than both of the hydrogen atoms and it is able to exert a much more powerful pull on the shared electrons than the hydrogen...
A hydrogen bond occurs under specific condition, where a hydrogen atom which is already bonded to a highly electronegative atom (one of the three; oxygen, nitrogen or fluorine) experiences another force of attraction from a nearby atom that is also highly electronegative. 2. Covalent bonds ...
A new 3D complex [Mn(bpe)(H2O)4]0.5n(tp)0.5n(bpe)n [bpe = 1,2-bis(4-pyridyl)ethane, tp = terephthalate] with long-distance antiferromagnetic interactions clearly shows that hydrogen bonds are useful in increasing molecular dimensionality and the bpe ligand favors crystal packing due to its...
Comparing the strength of covalent bonds, intermolecular hydrogen bonds and other intermolecular interactions for organic molecules: X-ray diffraction data... Comparing the strength of covalent bonds, intermolecular hydrogen bonds and other intermolecular interactions for organic molecules: X-ray diffraction ...
How does a polar covalent bond contribute to the formation of a hydrogen bond? Intermolecular Forces: In addition to covalent and ionic bonds, there are other forces that exist between molecules. Molecules can transiently attain partial charges because of the movement of electrons, which...
In Section 4.1 “Covalent Bonds”, we stated that the covalent bond in the hydrogen molecule (H2) has a certain length (about 7.4 × 10−11 m). Other covalent bonds also have known bond lengths, which are dependent on both the identities of the atoms in the bond and whether the bo...
The covalent-like characteristics of hydrogen bonds offer a new perspective on intermolecular interactions. Here, using density functional theory and post-Hartree-Fock methods, we reveal that there are two bonding molecular orbitals (MOs) crossing the O and H atoms of the hydrogen-bond in water di...