• The transient nature of the binding may be because this sequence is recognized on account of its structure without additional hydrogen bonding contacts.• In this case the presence of oxygen and hydrogen mixed in the optimum proportions, could well have compounded the effect....
At the end we have successfully prepared tripodal receptors for a particular anion with judicious choice of recognition elements such as hydrogen bonding amide/sulfonamide moiety, electron deficient pentafluorophenyl functionality for anion-蟺 interaction and the well defined C3v symmetric tripodal backbone...
The acidity and basicity as hydrogen bond donors and acceptors have been measured for the compounds Ph 3MOH, where M = C, Si, Ge, Sn and Pb. The trends in acidity and basicity in these compounds indicate that dative pi-bonding from oxygen to M is strong in Ph 3SiOH, weaker in Ph ...
The large difference in hydrogen bonding between hydrogen fluoride and the other hydrogen halides accounts for the relatively high melting and boiling points of hydrogen fluoride as compared with those of hydrogen chloride and the other hydrogen halides. The hydrogen-halogen bond energies also decrease ...
in theliquid state. Similar hydrogen bonding exists in the other hydrogen halides, but it is considerably weaker. The large difference in hydrogen bonding between hydrogen fluoride and the other hydrogen halides accounts for the relatively high melting and boiling points of hydrogen fluoride as ...
What type of bonding is most important in CH_3CH_2CH_2CH_2CH_2CH_3? Polar, ionic, covalent, or hydrogen? What is ionic bonding? What kind of bonds are shared between two nonmetals? What are three differences between the bonding in ioni...
The untenable quantum shell model of the atom is the base for the explanation of chemical bonding and the periodic table; therefore quantum physical chemistry is untenable. Pout's thesis in 1815 that all elements are made up of hydrogen atoms is proved true. The dogmatic exclusion of chemical ...
Folded RNA molecules are stabilized by a variety of interactions, the most prevalent of which are stacking and hydrogen bonding between bases. Many interactions among backbone atoms also occur in the structure of tRNA, although they are often ignored when considering RNA structure because they are ...
Hydrogen bonding would be represented by the cross-hatched area near to van der Waals types of bonding. wire in domestic wiring.) Also, metals are ductile and malleable; they can be hammered into sheets, such as the pressed steel used as body parts for a car. The layers of atoms can ...
Ch activation/dehydrogenation of hydrocarbons.The catalyst is then used to dehydrogenate hydrocarbons in a dehydrogenation reaction zone under dehydrogenation reaction conditions. 2) support component comprising a silicon-containing comp... I Boehmer,BM Welch,R Schmidt,... 被引量: 0发表: 2008年 Fluo...