Role‐Allocated Combination of Two Types of Hydrogen Bonds towards Constructing a Breathing Diamondoid Porous Organic Salt[J] . Atsushi Yamamoto,Tetsuya Hasegawa,Tomoya Hamada,Tomofumi Hirukawa,Ichiro Hisaki,Mikiji Miyata,Norimitsu Tohnai.Chem. Eur. J. . 2013 (9)...
such as in water with an oxygen atom and in hydrocarbons with carbon atoms. In the case of water, the covalently bonded hydrogen atoms can form additional intermolecular hydrogen bonds that are weaker than the covalent molecular bonds. These...
33, No.2, pp 190-198 (2001) Studies on Different Types of Hydrogen Bonds in Poly(vinyl alcohol) Films by 1H CRAMPS and Solid-State Two-Dimensional 1H-13C Heteronuclear Correlation Analyses Kenji MASUDA, Hironori KAJI, and Fumitaka HORIIt Institute for Chemical Research, Kyoto University, Uji...
Intercage hydrogen-bonds and hydrophobic interactions between-butyl groups direct the hierarchical assembly of the cages into a permanent porous material. The chiral phosphoric acid-containing frameworks can be high efficient and recyclable heterogeneous Brnsted acid catalysts for asymmetric [3+2] coupling...
What is the number of hydrogen bonds in a double helical B-DNA structure of 100 base pairs with 20 adenines and 10 thymines in one of the two strands? What are the types of DNA? What bonds the 3'-OH end of a polynucleotide to a free 5' nucleotide triphosphate? What is the diff...
aCompare the magnitude of intermolecular forces of H2O and O2:[translate] aThe hydrogen bond is a weak bond,but than van der Waals force is strong.H2O has two hydrogen atoms.The oxygen atom has two lone pairs of electrons, which is easy to other hydrogen atoms to form hydrogen bonds, so...
Formation of two hydrogen bonds from the globin to theheme-linked oxygen molecule in Ascaris hemoglobin. We have tried to find out why Ascaris hemoglobinhas such an exceptionally high oxygen affinity (P50 approximately 0.004 mmHg; 1mmHg = 133 Pa). Following Kl... I De Baere,MF Perutz,L Kig...
athe two pairs of electrons of oxygen may be shared with one carbon alone forming a double bond, or with two separate carbons,or with one carbon and one hydrogen forming only single bonds 正在翻译,请等待... [translate]
What is formed when chlorine reacts with hydrogen? What results from an unequal sharing of electrons between atoms? How are chemical elements formed? How are chemical bonds formed? In a covalent bond what holds atoms together? What part of the atom is involved in chemical reactions?
Explain what is meant by hydrogen bonding. Describe the hydrogen bonding between two {eq}H_2O {/eq} molecules.Intermolecular Forces of Attraction:The intermolecular forces of attraction (IMFA) are the interactions occurring between molecules. These are much weaker than the c...