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  2. Newman projection - Wikipedia

    en.wikipedia.org/wiki/Newman_projection

    A Newman projection is a drawing that helps visualize the 3-dimensional structure of a molecule. [1] This projection most commonly sights down a carbon-carbon bond, making it a very useful way to visualize the stereochemistry of alkanes. A Newman projection visualizes the conformation of a chemical bond from front to back, with

  3. Rotamer - Wikipedia

    en.wikipedia.org/wiki/Rotamer

    Above: Newman projection; below: depiction of spatial orientation. In chemistry, rotamers are chemical species that differ from one another primarily due to rotations about one or more single bonds. Various arrangements of atoms in a molecule that differ by rotation about single bonds can also be referred to as different conformations ...

  4. C2H3Br3 - Wikipedia

    en.wikipedia.org/wiki/C2H3Br3

    Printable version; In other projects Wikidata item; ... 1,1,1-Tribromoethane; 1,1,2-Tribromoethane This page was last edited on 26 August 2022, at 19:57 ...

  5. Tetrabromoethane - Wikipedia

    en.wikipedia.org/wiki/Tetrabromoethane

    1,1,2,2-Tetrabromoethane, or simply tetrabromoethane (TBE), is a halogenated hydrocarbon, chemical formula C 2 H 2 Br 4.Although three bromine atoms may bind to one of the carbon atoms creating 1,1,1,2-tetrabromoethane this is not thermodynamically favorable, so in practice tetrabromoethane is equal to 1,1,2,2-tetrabromoethane, where each carbon atom binds two bromine atoms.

  6. Staggered conformation - Wikipedia

    en.wikipedia.org/wiki/Staggered_conformation

    Staggered conformation image right in Newman projection Eclipsed conformation. In organic chemistry, a staggered conformation is a chemical conformation of an ethane-like moiety abcX–Ydef in which the substituents a, b, and c are at the maximum distance from d, e, and f; this requires the torsion angles to be 60°. [1]

  7. Melvin Spencer Newman - Wikipedia

    en.wikipedia.org/wiki/Melvin_Spencer_Newman

    Melvin Spencer Newman (March 10, 1908 – May 30, 1993) was an American chemist, Ohio State University professor, best known for inventing the Newman projection. Newman was born in New York City in a Jewish family, the youngest of Mae (née Polack) and Jacob K. Newman's four children. [ 1 ]

  8. Alchemical symbol - Wikipedia

    en.wikipedia.org/wiki/Alchemical_symbol

    A table of alchemical symbols from Basil Valentine's The Last Will and Testament, 1670 Alchemical symbols before Lavoisier Alchemical symbols were used to denote chemical elements and compounds, as well as alchemical apparatus and processes, until the 18th century.

  9. Mathematical formulation of the Standard Model - Wikipedia

    en.wikipedia.org/wiki/Mathematical_formulation...

    For the leptons, the gauge group can be written SU(2) l × U(1) L × U(1) R. The two U(1) factors can be combined into U(1) Y × U(1) l, where l is the lepton number. Gauging of the lepton number is ruled out by experiment, leaving only the possible gauge group SU(2) L × U(1) Y. A similar argument in the quark sector also gives the same result ...