The meaning of HYDROGEN BOND is 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 su
hydrogen bondinghydrophilic effectsThe adsorption of water on a fully hydroxylated silica surface is studied by using density-functional total-energy and ... J Yang,S Meng,LF Xu,... - 《Physical Review Letters》 被引量: 133发表: 2004年 Ionic-Liquid-Based Aqueous Biphasic Systems with Controlled...
The ring structures in the cluster are classified by the pattern of alignment of the hydrogen bonds. The lengthening of the hydrogen-bonding OH of Wdis strongly correlated with the charge-transferenergy. 展开 关键词: microwave heating temperature rising polar species reaction rates collision theory ...
Hydrogen Bonding in Water Clusters and Their Ionized Counterparts Atoms in molecules (AIM) analysis performed to evaluate the nature of the hydrogen bonding shows a high correlation between hydrogen bond strength and the ... YI Neela,AS Mahadevi,GN Sastry - 《Journal of Physical Chemistry B》 被...
Hydrogen bonding is a driving force for adsorption with an energy range of 13–30 kJ mol−1 and increases with electronegativity of the participants, D and A. Hydrogen bonding energy decreases with increasing temperature and ion strength, as well as by the presence of chaotropic agents ...
Hydrogen Bonding in Biological Systems Hydrogen Bonds in Water In a water molecule, the oxygen atom has two lone pairs of electrons, each of which can act as a hydrogen bond acceptor. The two hydrogen atoms in water can each be “donated” to another acceptor atom (such as the oxygen atom...
In a two-page account, Partington (1951) (297) refers to water as "a mixture of polymerized water molecules" and cites about 80 papers. In his inaugural lecture (1963) Ives (185) talked about his "reflections on water," referred to the thermodynamic studies of Frank and his co-workers,...
The expected volume of the liquid at room temperature is obtained by extrapolation, for example, using the formula of Jacobson and Heedman 1 . The volume thus deduced corresponds to a state without hydrogen bonding (at 0° C. about 8 per cent denser than ordinary water). Each hydrogen bond...
Notice the greater openness of the ice structure which is necessary to ensure the strongest degree of hydrogen bonding in a uniform, extended crystal lattice. The more crowded and jumbled arrangement in liquid water can be sustained only by the greater amount of thermal energy available above the...
water/ hydrogen bondingwaterammonia moleculesSCF LCAO MO methodSlater type orbitalsequilibrium separationminimumpotential energy curveThe hydrogen bond N·H O between the water and ammonia molecules has been investigated ab initio using the SCF LCAO MO method. The minimal and extended basis sets of ...