• 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) - 18:47, 30 May 2023
  • 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 (3,668 words) - 05:48, 29 October 2024
  • 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 (3,806 words) - 11:14, 17 October 2024
  • 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 (1,907 words) - 18:09, 24 October 2024
  • 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 (2,212 words) - 15:24, 26 June 2024
  • 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...
    22 KB (3,265 words) - 00:34, 24 September 2024
  • 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 Chiral auxiliary
    in order to control the stereochemical outcome of the synthesis. The chirality present in the auxiliary can bias the stereoselectivity of one or more...
    34 KB (3,692 words) - 20:40, 22 July 2024
  • Thumbnail for Axial symmetry
    Rotational symmetry has a more general discussion Chiral symmetry describes the use in quantum mechanics "Axial symmetry" American Meteorological Society glossary...
    1 KB (115 words) - 08:38, 12 May 2024
  • 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) - 07:18, 19 May 2024
  • 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 (1,599 words) - 12:14, 21 July 2024
  • Thumbnail for Stereochemistry
    twisting about a bond. Atropisomerism An energetic form of axial chirality. This form of chirality derives from differential substitution about a bond, commonly...
    13 KB (1,461 words) - 08:37, 9 October 2024
  • 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...
    17 KB (1,664 words) - 09:15, 13 September 2024
  • 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
  • Thumbnail for Conformational isomerism
    Roussel; Nicolas Vanthuyne; Patrick Piras (2012). Atropisomerism and Axial Chirality in Heteroaromatic Compounds. Advances in Heterocyclic Chemistry. Vol...
    33 KB (3,846 words) - 18:11, 24 July 2024
  • either aligned (right-handed chirality), or counter-aligned (left-handed chirality), with their momenta. In this case the chirality is a conserved quantum number...
    18 KB (2,674 words) - 08:28, 29 October 2024
  • 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...
    40 KB (4,305 words) - 04:10, 21 August 2024
  • 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 (2,627 words) - 04:20, 22 July 2024
  • 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) - 19:11, 1 March 2024
  • 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) - 03:01, 9 February 2024
  • The axial current, also denoted the pseudo-vector or chiral current, is the conserved current associated to the chiral symmetry or axial symmetry of a...
    8 KB (947 words) - 04:24, 12 February 2024
  • 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
  • Thumbnail for Helicene
    are notable for having chirality despite lacking both asymmetric carbons and chiral centers. Instead, there is axial chirality, which results from the...
    13 KB (1,501 words) - 23:16, 20 February 2024
  • 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) - 15:06, 26 September 2024
  • 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) - 20:18, 17 August 2024
  • 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 (4,550 words) - 08:49, 31 October 2024
  • Thumbnail for Synthetic molecular motor
    consists of a bis-helicene connected by an alkene double bond displaying axial chirality and having two stereocenters. One cycle of unidirectional rotation...
    18 KB (2,016 words) - 20:35, 22 July 2024
  • Rezanka, P; Sigler, K (2008). "A biaryl xanthone derivative having axial chirality from Penicillium vinaceum". Journal of Natural Products. 71 (5): 820–3...
    3 KB (232 words) - 06:33, 5 February 2024
  • Thumbnail for Cavicularia
    displaying optical activity solely due to the presence of planar chirality and axial chirality. Stephani, Franz (1897). "Hepaticae japonicae". Bulletin de...
    6 KB (641 words) - 07:21, 20 May 2024