When.com Web Search

Search results

  1. Results From The WOW.Com Content Network
  2. Isomerization - Wikipedia

    en.wikipedia.org/wiki/Isomerization

    The compound with the formula (C 5 H 5) 2 Fe 2 (CO) 4 exists as three isomers in solution. In one isomer the CO ligands are terminal. When a pair of CO are bridging, cis and trans isomers are possible depending on the location of the C 5 H 5 groups. [7] Another example in organometallic chemistry is the linkage isomerization of ...

  3. Isomer - Wikipedia

    en.wikipedia.org/wiki/Isomer

    In chemistry, isomers are molecules or polyatomic ions with identical molecular formula – that is, the same number of atoms of each element – but distinct arrangements of atoms in space. [1] Isomerism refers to the existence or possibility of isomers. Isomers do not necessarily share similar chemical or physical properties.

  4. Valence isomer - Wikipedia

    en.wikipedia.org/wiki/Valence_isomer

    The valence isomers are not restricted to isomers of benzene. Valence isomers are also seen in the series (CH) 8. Due to the larger number of units, the number of possible valence isomers is also greater and at least 21: Valence isomers of cyclooctatetraene

  5. Nuclear isomer - Wikipedia

    en.wikipedia.org/wiki/Nuclear_isomer

    A nuclear isomer is a metastable state of an atomic nucleus, in which one or more nucleons (protons or neutrons) occupy excited state levels (higher energy levels). ). "Metastable" describes nuclei whose excited states have half-lives 100 to 1000 times longer than the half-lives of the excited nuclear states that decay with a "prompt" half life (ordinarily on the order of 10

  6. Structural isomer - Wikipedia

    en.wikipedia.org/wiki/Structural_isomer

    Functional isomers are structural isomers which have different functional groups, resulting in significantly different chemical and physical properties. [ 11 ] An example is the pair propanal H 3 C–CH 2 –C(=O)-H and acetone H 3 C–C(=O)–CH 3 : the first has a –C(=O)H functional group, which makes it an aldehyde , whereas the second has ...

  7. p-Xylene - Wikipedia

    en.wikipedia.org/wiki/P-Xylene

    p-Xylene (para-xylene) is an aromatic hydrocarbon.It is one of the three isomers of dimethylbenzene known collectively as xylenes.The p-stands for para-, indicating that the two methyl groups in p-xylene occupy the diametrically opposite substituent positions 1 and 4.

  8. Tetramethylbenzene - Wikipedia

    en.wikipedia.org/wiki/Tetramethylbenzene

    Through their different arrangement, they form three structural isomers with the molecular formula C 10 H 14. They also belong to the group of C 4 -benzenes . The best-known isomer is durene .

  9. List of isomers of decane - Wikipedia

    en.wikipedia.org/wiki/List_of_isomers_of_decane

    Download as PDF; Printable version; In other projects ... move to sidebar hide. This is the list of the 75 isomers of decane. [1] [2] Straight-chain ... This page was ...