• Thumbnail for Axial chirality
    In chemistry, axial chirality is a special case of chirality in which a molecule contains two pairs of chemical groups in a non-planar arrangement about...
    7 KB (768 words) - 15:08, 3 May 2025
  • Thumbnail for Chirality (chemistry)
    chirality (inherent chirality). These types of chirality are far less common than central chirality. BINOL is a typical example of an axially chiral molecule...
    31 KB (3,684 words) - 12:31, 17 June 2025
  • Thumbnail for Chiral auxiliary
    pseudo-axial orientation to minimize 1,3-diaxial interactions. The absolute stereochemistry of the two stereocenters is controlled by the chirality in the...
    34 KB (3,726 words) - 10:21, 15 March 2025
  • Thumbnail for Atropisomer
    outcomes and yields also contribute. Atropisomers exhibit axial chirality (planar chirality). When the barrier to racemization is high, as illustrated...
    17 KB (1,987 words) - 20:48, 4 May 2025
  • Thumbnail for Spiro compound
    assigned.: 1139ff  Some spiro compounds exhibit axial chirality. Spiroatoms can be the origin of chirality even when they lack the required four different...
    20 KB (2,221 words) - 03:40, 7 April 2025
  • Thumbnail for Chirality
    Chirality (/kaɪˈrælɪti/) is a property of asymmetry important in several branches of science. The word chirality is derived from the Greek χείρ (kheir)...
    33 KB (3,814 words) - 20:48, 19 June 2025
  • Thumbnail for Carbodiimide
    characteristic of double bonds. Carbodiimides are chiral, possessing C2-symmetry and therefore axial chirality. However, due to the low energy barrier to the...
    14 KB (1,610 words) - 04:04, 8 June 2025
  • Thumbnail for Jacobus Henricus van 't Hoff
    predicted the correct structures of allenes and cumulenes as well as their axial chirality. He is also widely considered one of the founders of physical chemistry...
    18 KB (1,680 words) - 10:07, 17 June 2025
  • A chiral phenomenon is one that is not identical to its mirror image (see the article on mathematical chirality). The spin of a particle may be used to...
    28 KB (3,792 words) - 22:59, 23 May 2025
  • important consideration if the resulting biphenol compound displays axial chirality or atropoisomerism. Selectivity between homo- and hetero-coupled products...
    12 KB (1,270 words) - 15:06, 23 May 2025
  • Thumbnail for Allenes
    to the Cahn–Ingold–Prelog priority rules, the configuration of the axial chirality can be determined by considering the substituents on the front atom...
    39 KB (4,190 words) - 03:03, 5 June 2025
  • sp2-hybridized carbon atoms. Usually atropisomers are chiral, and as such they are a form of axial chirality. Atropisomerism can be described as conformational...
    12 KB (1,263 words) - 10:11, 17 June 2025
  • Thumbnail for BINAP
    positions. This C2-symmetric framework lacks a stereogenic atom, but has axial chirality due to restricted rotation (atropisomerism). The barrier to racemization...
    8 KB (583 words) - 14:55, 28 November 2023
  • ligand for transition-metal catalysed asymmetric synthesis. BINOL has axial chirality and the two enantiomers can be readily separated and are stable toward...
    9 KB (753 words) - 22:34, 5 August 2024
  • physics, the axial current, also denoted the pseudo-vector or chiral current, is the conserved current associated to the chiral symmetry or axial symmetry...
    8 KB (950 words) - 13:14, 13 June 2025
  • Thumbnail for Rotamer
    Roussel; Nicolas Vanthuyne; Patrick Piras (2012). Atropisomerism and Axial Chirality in Heteroaromatic Compounds. Advances in Heterocyclic Chemistry. Vol...
    34 KB (3,949 words) - 22:30, 19 June 2025
  • Thumbnail for Bisoxazoline ligand
    available at low expense. Chirality is introduced with the amino alcohols, as these are prepared from amino acids and hence are chiral (e.g. valinol). In general...
    20 KB (2,222 words) - 07:45, 8 June 2025
  • Thumbnail for Axial symmetry
    Axiality (geometry), the degree of axial symmetry Chiral symmetry describes the use in quantum mechanics "Axial symmetry" American Meteorological Society...
    1 KB (133 words) - 18:53, 6 March 2025
  • Some of the broken symmetries include the axial U(1) symmetry of the flavour group. This is broken by the chiral anomaly. The presence of instantons implied...
    32 KB (4,235 words) - 11:26, 24 February 2025
  • Thumbnail for Cumulene
    alkenes. If the number of consecutive double bonds is even, there is axial chirality as for allenes. The first reported complex containing a vinylidene...
    5 KB (588 words) - 01:48, 11 February 2025
  • Thumbnail for Phosphoramidite ligand
    formation. Key to the success of their approach is the axial-to-central transfer of chirality from the BINOL structure to the phosphorus atom during the...
    7 KB (987 words) - 01:30, 20 June 2025
  • Thumbnail for Cyclohexane conformation
    in the axial position. 1,3 Diaxial interactions occur when the non-hydrogen substituent on a cyclohexane occupies the axial position. This axial substituent...
    33 KB (4,190 words) - 16:11, 22 May 2025
  • massive, not massless, then a chirality-violating decay is allowed; however, it is not of the correct size. (Chirality is not a constant of motion of...
    23 KB (3,271 words) - 15:06, 26 May 2025
  • of their chirality, with some ligands containing central chirality on the phosphorus or carbon atoms, some containing biaryl axial chirality, and others...
    24 KB (2,771 words) - 15:02, 8 June 2025
  • left and right circularly polarized light A form of axial chirality A former name for inherent chirality Helix This disambiguation page lists articles associated...
    528 bytes (103 words) - 04:36, 23 September 2020
  • Thumbnail for Enantiomer
    The asymmetric atom is called a chirality center, a type of stereocenter. A chirality center is also called a chiral center or an asymmetric center. Some...
    24 KB (2,639 words) - 16:47, 23 May 2025
  • either aligned (right-handed chirality), or counter-aligned (left-handed chirality), with their momenta. In this case the chirality is a conserved quantum number...
    19 KB (2,740 words) - 04:54, 28 March 2025
  • Thumbnail for Axial twist theory
    According to the theory, the vertebrate body has a left-handed chirality. The axial twist theory competes with a number of other proposals that focus...
    42 KB (4,577 words) - 08:22, 24 May 2025
  • chirality, most commonly when molecules possess stereogenic elements such as one or more stereocenters (central chirality), a stereogenic axis (axial...
    175 KB (19,570 words) - 02:00, 18 May 2025
  • Thumbnail for Inherent chirality
    racemization barrier that enantiomers have been isolated. Chirality (chemistry) Planar chirality Axial chirality Dalla Cort, Antonella; Mandolini, Luigi; Pasquini...
    8 KB (964 words) - 09:21, 16 December 2023