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A chirality center (chiral center) is a type of stereocenter. A chirality center is defined as an atom holding a set of four different ligands (atoms or groups of atoms) in a spatial arrangement which is non-superposable on its mirror image. Chirality centers must be sp 3 hybridized, meaning that a chirality center can only have single bonds. [5]
Chirality (/ k aɪ ˈ r æ l ɪ t i /) is a property of asymmetry important in several branches of science. The word chirality is derived from the Greek χείρ (kheir), "hand", a familiar chiral object. An object or a system is chiral if it is distinguishable from its mirror image; that is, it cannot be superposed (not to be confused with ...
The chiral symmetry transformation can be divided into a component that treats the left-handed and the right-handed parts equally, known as vector symmetry, and a component that actually treats them differently, known as axial symmetry. [2] (cf. Current algebra.) A scalar field model encoding chiral symmetry and its breaking is the chiral model.
Suggest changing to one or emphasizing the difference (quick google poll would indicate chiral center is more common than chirality center). — Preceding unsigned comment added by Zzzzort (talk • contribs) 22:38, 31 January 2011 (UTC) The flash animation was horrible. The terms "chiral center" and "chirality centre" are the same.
Many chiral molecules have point chirality, namely a single chiral stereogenic center that coincides with an atom. This stereogenic center usually has four or more bonds to different groups, and may be carbon (as in many biological molecules), phosphorus (as in many organophosphates), silicon, or a metal (as in many chiral coordination compounds).
Chicago is traditionally divided into the three "sides" of the North Side, West Side, and South Side by the Chicago River. These three sides are represented by the white stripes on the Flag of Chicago. [12] The city is also divided into 50 wards for the purpose of electing one alderman each to the Chicago City Council. These wards have at times ...
After two consecutive years of more than 20% gains for the S&P 500 — an achievement not seen since the late 1990s — Wall Street strategists foresee a slower pace of gains for the benchmark ...
The Cram's rule of asymmetric induction named after Donald J. Cram states In certain non-catalytic reactions that diastereomer will predominate, which could be formed by the approach of the entering group from the least hindered side when the rotational conformation of the C-C bond is such that the double bond is flanked by the two least bulky groups attached to the adjacent asymmetric center. [3]