distinct arrangements of atoms in space. Isomerism refers to the existence or possibility of isomers. Isomers do not necessarily share similar chemical...
41 KB (5,523 words) - 06:03, 19 July 2024
In chemistry, conformational isomerism is a form of stereoisomerism in which the isomers can be interconverted just by rotations about formally single...
33 KB (3,846 words) - 18:11, 24 July 2024
Cis–trans isomerism, also known as geometric isomerism, describes certain arrangements of atoms within molecules. The prefixes "cis" and "trans" are from...
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In coordination chemistry, ligand isomerism is a type of structural isomerism in coordination complexes which arises from the presence of ligands which...
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A nuclear isomer is a metastable state of an atomic nucleus, in which one or more nucleons (protons or neutrons) occupy excited state (higher energy) levels...
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In organic chemistry, endo–exo isomerism is a special type of stereoisomerism found in organic compounds with a substituent on a bridged ring system....
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In chemistry, linkage isomerism or ambidentate isomerism is a form of isomerism in which certain coordination compounds have the same composition but...
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Coordination isomerism is a form of structural isomerism in which the composition of the coordination complex ion varies. In a coordination isomer the total...
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Stereoisomerism (redirect from Stereo-Isomerism)
In stereochemistry, stereoisomerism, or spatial isomerism, is a form of isomerism in which molecules have the same molecular formula and sequence of bonded...
16 KB (1,641 words) - 13:48, 2 August 2024
Arene substitution pattern (redirect from Para-isomer)
simple disubstituted arenes, the three isomers tend to have rather similar boiling points. However, the para isomer usually has the highest melting point...
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coordination chemistry, hydration isomerism is a kind of isomerism that is observed in some solids. Hydration isomers have identical formula but differ...
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Meso compound (redirect from Meso isomers)
A meso compound or meso isomer is an optically inactive isomer in a set of stereoisomers, at least two of which are optically active. This means that despite...
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In chemistry, a structural isomer (or constitutional isomer in the IUPAC nomenclature) of a compound is another compound whose molecule has the same number...
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Coordination complex (redirect from Fac–mer isomerism)
isomerism, solvate or hydrate isomerism, linkage isomerism and coordination isomerism. Ionisation isomerism – the isomers give different ions in solution...
57 KB (5,554 words) - 03:54, 13 August 2024
Isomer (Greek isos = "equal", méros = "part") is an element of transverse body articulation of the bilateral fossil animals of the Phylum Proarticulata...
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formula for THC (C21H30O2) describes multiple isomers, the term THC usually refers to the delta-9-THC isomer with chemical name (−)-trans-Δ9-tetrahydrocannabinol...
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Octane (redirect from List of isomers of octane)
CH3(CH2)6CH3. Octane has many structural isomers that differ by the location of branching in the carbon chain. One of these isomers, 2,2,4-trimethylpentane (commonly...
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are valence isomers when they are constitutional isomers that can interconvert through pericyclic reactions. There are many valence isomers one can draw...
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Chemical nomenclature (redirect from Name benzene isomer)
(IUPAC). IUPAC Nomenclature ensures that each compound (and its various isomers) have only one formally accepted name known as the systematic IUPAC name...
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(parahydrogen). These two forms are often referred to as spin isomers or as nuclear spin isomers. Parahydrogen is in a lower energy state than is orthohydrogen...
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Induced gamma emission (redirect from Isomer bomb)
of gamma rays from excited nuclei, usually involving a specific nuclear isomer. It is analogous to conventional fluorescence, which is defined as the emission...
15 KB (1,973 words) - 15:15, 28 December 2023
Three isomers are common, varying by the positions of the isocyanate groups around the rings: 2,2′-MDI, 2,4′-MDI, and 4,4′-MDI. The 4,4′ isomer is most...
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the major component in the essential oil of citrus fruit peels. The (+)-isomer, occurring more commonly in nature as the fragrance of oranges, is a flavoring...
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Diberal (section (+)-Isomer)
Depending on which isomer is used, it can have either convulsant or anticonvulsant actions. The different pharmacological profile between isomers is thought to...
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Isotopes of thorium (redirect from Lowest-energy nuclear isomer)
half-lives that are less than ten minutes. One isotope, 229Th, has a nuclear isomer (or metastable state) with a remarkably low excitation energy, recently...
50 KB (4,984 words) - 16:57, 6 September 2024
Optical rotation (redirect from Levo isomer)
as glucose, in solution. In fact one name for D-glucose (the biological isomer), is dextrose, referring to the fact that it causes linearly polarized light...
36 KB (4,889 words) - 10:35, 2 September 2024
Enantiomer (redirect from Optical isomerism)
(enantíos) 'opposite', and μέρος (méros) 'part') – also called optical isomer, antipode, or optical antipode – is one of two stereoisomers that are nonsuperposable...
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'triggering' rapid energy releases, via gamma ray emission, from a nuclear isomer of hafnium, 178m2Hf. Per event the energy release is 5 orders of magnitude...
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projection, two mirror-image isomers differ by having the positions of all chiral hydroxyls reversed right-to-left. Mirror-image isomers are chemically identical...
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Topoisomer (redirect from Topological isomer)
Topoisomers or topological isomers are molecules with the same chemical formula and stereochemical bond connectivities but different topologies. Examples...
1 KB (114 words) - 10:51, 17 July 2023