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  2. List of character tables for chemically important 3D point ...

    en.wikipedia.org/wiki/List_of_character_tables...

    These groups are characterized by i) an n-fold proper rotation axis C n; ii) n 2-fold proper rotation axes C 2 normal to C n; iii) a mirror plane σ h normal to C n and containing the C 2 s. The D 1h group is the same as the C 2v group in the pyramidal groups section. The D 8h table reflects the 2007 discovery of errors in older references. [4]

  3. Character table - Wikipedia

    en.wikipedia.org/wiki/Character_table

    The irreducible complex characters of a finite group form a character table which encodes much useful information about the group G in a concise form. Each row is labelled by an irreducible character and the entries in the row are the values of that character on any representative of the respective conjugacy class of G (because characters are class functions).

  4. Molecular symmetry - Wikipedia

    en.wikipedia.org/wiki/Molecular_symmetry

    The first character tables were compiled by László Tisza (1933), in connection to vibrational spectra. Robert Mulliken was the first to publish character tables in English (1933), and E. Bright Wilson used them in 1934 to predict the symmetry of vibrational normal modes. [14]

  5. Ethynyl radical - Wikipedia

    en.wikipedia.org/wiki/Ethynyl_radical

    The ethynyl radical (systematically named λ 3-ethyne and hydridodicarbon(CC)) is an organic compound with the chemical formula C≡CH (also written [CCH] or C 2 H ). It is a simple molecule that does not occur naturally on Earth but is abundant in the interstellar medium .

  6. C2H - Wikipedia

    en.wikipedia.org/wiki/C2H

    Ethynyl radical, an organic compound with the chemical formula C≡CH (also written [CCH] or C 2 H) Cinnamate/coumarate 2-hydroxylase, an enzyme in the umbellic acid biosynthesis pathway; Candida two-hybrid (C2H) system, a variant of the yeast two-hybrid (Y2H) system

  7. C data types - Wikipedia

    en.wikipedia.org/wiki/C_data_types

    Format specifier Range Suffix for decimal constants bool: Boolean type, added in C23. 1 (exact) %d [false, true] — char: Smallest addressable unit of the machine that can contain basic character set. It is an integer type. Actual type can be either signed or unsigned. It contains CHAR_BIT bits. [3] ≥8 %c [CHAR_MIN, CHAR_MAX] — signed char

  8. List of space groups - Wikipedia

    en.wikipedia.org/wiki/List_of_space_groups

    In Hermann–Mauguin notation, space groups are named by a symbol combining the point group identifier with the uppercase letters describing the lattice type.Translations within the lattice in the form of screw axes and glide planes are also noted, giving a complete crystallographic space group.

  9. Template:Chset-tableformat - Wikipedia

    en.wikipedia.org/wiki/Template:Chset-tableformat

    Used for formatting character set tables. See ISO 8859-1, Windows-1252, and EBCDIC for examples. Chset family of templates.