Hydrogens

Some articles on hydrogen, hydrogens:

Topicity - Diastereotopic
... For example, the two hydrogen atoms of the CH2 moiety in (S)-2-bromobutane are diastereotopic ... Replacement of one hydrogen atom (colored blue) with a bromine atom will produce (2S,3R)-2,3-dibromobutane ... Replacement of the other hydrogen atom (colored red) with a bromine atom will produce the diastereomer (2S,3S)-2,3-dibromobutane (S)-2-bromobutane (2S,3R)-2,3-dibromobutane (2S,3S)-2,3-dibromobutane In ...
Free-radical Halogenation - Control of Halogenation
... In most hydrocarbons more than one possible product exists depending on which hydrogen is replaced ... resulting from the chlorination of an alkane with non-equivalent hydrogens ... example, 2-methyl butane ((CH3)2CHCH2CH3) exhibits the following results -For clarity, the unique hydrogens will be labeled as follows a=(CH3)2 (primary), b=CH (tertiary), c=CH2 (second ...
Molecular Dynamics - Potentials in MD Simulations - Coarse-graining and Reduced Representations
... one typically eliminates all explicit hydrogen atoms except those that have the capability to participate in hydrogen bonds ("polar hydrogens") ... The polar hydrogens are usually retained in the model, because proper treatment of hydrogen bonds requires a reasonably accurate description of the ... A hydroxyl group, for example, can be both a hydrogen bond donor and a hydrogen bond acceptor, and it would be impossible to treat this with a single OH pseudo-atom ...
Electron Paramagnetic Resonance - Spectral Parameters - Hyperfine Coupling
... The two equivalent methyl hydrogens will give an overall 121 EPR pattern, each component of which is further split by the three methoxy hydrogens into a 1331 pattern to give a total ... smaller coupling constant (smaller line spacing) is due to the three methoxy hydrogens, while the larger coupling constant (line spacing) is from the two ...