non-Kekulé molecule is a conjugated hydrocarbon that cannot be assigned a classical Kekulé structure[definition needed]. Since non-Kekulé molecules have...

particular the Kekulé structure of benzene. Kekulé never used his first given name; he was known throughout his life as August Kekulé. After he was ennobled...

Kekulé may refer to: August Kekulé (1829–1896), later August Kekule von Stradonitz, German organic chemist Non-Kekulé molecule Alexander Kekulé, a German...

diradicals are extremely reactive and non-Kekulé molecules that are rarely isolated. Diradicals are even-electron molecules but have one fewer bond than the...

recognised as an aromatic molecule by Dewar in 1945. In 1936, Hückel developed the theory of π-conjugated biradicals (non-Kekulé molecules). The first example...

2015-06-27. On p. 100, Kekulé suggests that the carbon atoms of benzene could form a "chaîne fermée" (closed chain). Aug. Kekulé (1872), "Ueber einige...

alternating single and double bonds (cyclohexatriene), was developed by Kekulé (see History section below). The model for benzene consists of two resonance...

(lowering of the energy) of the molecule. In benzene the two cyclohexatriene Kekulé structures, first proposed by Kekulé, are taken together as contributing...

elements" (1857–58), Friedrich August Kekulé was the first to offer a theory of how every atom in an organic molecule was bonded to every other atom. He...

their valence electrons. Hence they are sometimes termed Kekulé structures or Lewis–Kekulé structures. Skeletal formulae have become ubiquitous in organic...

p-orbitals with delocalized electrons in a molecule, which in general lowers the overall energy of the molecule and increases stability. It is conventionally...

with temperature-independent NMR resonances, so can be considered a non-Kekulé molecule. The species by Villinger can undergo reaction with phosphaalkyne...

A chemical bond is the association of atoms or ions to form molecules, crystals, and other structures. The bond may result from the electrostatic force...

benzene, until the correct structure was described by Friedrich August Kekulé. Likewise, the idea of stereoisomerism – that atoms have rigid three-dimensional...

nature was first recognized independently by Joseph Loschmidt and August Kekulé in the 19th century. Each carbon atom in the hexagonal cycle has four electrons...

π-delocalized molecules, such as ethylene, benzene, butadiene, and pyridine. It provides the theoretical basis for Hückel's rule that cyclic, planar molecules or...

methods confirm this assignment. Conversely, meta-xylylene is a non-Kekulé molecule that has a triplet ground-state. H. E. Winberg, F. S. Fawcett "[2...

chemical structure, developed independently in 1858 by both Friedrich August Kekulé and Archibald Scott Couper. Both researchers suggested that tetravalent...

in π-conjugated non-Kekulé molecules Journal of Molecular Structure: Theochem. Lu HSM, Berson JA. Catenation of heterocyclic non-Kekule biradicals to tetraradical...

agriculture. The term terpene was coined in 1866 by the German chemist August Kekulé to denote all hydrocarbons having the empirical formula C10H16, of which...

when the molecule is formed. In organic chemistry convention, formal charges are an essential feature of a correctly rendered Lewis–Kekulé structure...

Trimethylenemethane is a neutral, four-carbon molecule composed of four pi bonds; thus, it must be expressed either as a non-Kekulé molecule or a zwitterion. The orbital...

in honor of August Kekulé, the discoverer of the structure of the benzene molecule. The nature of the π bonding within the molecule was long debated, as...

N-Phenyltriazatrimethylenemethane Triplet Diradicals and a Perimidine- Derived Non-Kekulé Molecule by Photolysis of 5-Imino-4,5-dihydro-1H-tetrazoles.” H. Quast, W...

activity in terms of the tetrahedral arrangement of the atoms bound to carbon. Kekulé used tetrahedral models earlier in 1862 but never published these; Emanuele...

to this bicyclic compound (non-aromatic). Longifolene, a terpene natural product, and an example of a tricyclic molecule (non-aromatic). Paclitaxel, a polycyclic...

properties of molecules as due to spin coupling of the π orbitals. This is essentially still the old idea of resonance between Friedrich August Kekulé von Stradonitz...

notation for more complex organic molecules. In this type of diagram, first used by the organic chemist Friedrich August Kekulé von Stradonitz, the carbon atoms...

August Kekulé proposed fixed valences for many elements, such as 4 for carbon, and used them to propose structural formulas for many organic molecules, which...

1838, which has prevailed in the chemical literature. Friedrich August Kekulé proposed the term dextrose (from the Latin dexter, meaning "right"), because...