Cross-conjugation is a special type of conjugation in a molecule, when in a set of three Pi bonds only two pi-bonds interact with each other by conjugation, the third one is excluded from interaction ^[1]. A chemically conjugated system is a system of atoms Covalently bonded with alternating single and multiple (e In Chemistry, a molecule is defined as a sufficiently stable electrically neutral group of at least two Atoms in a definite arrangement held together by In Chemistry, pi bonds ( π bonds) are covalent Chemical bonds where two lobes of one involved electron orbital overlap two lobes In classical terms it means that the strict alternation of single and double bonds --CH=CH–CH=CH–CH-- (i. e. , conjugated) is interrupted by two consecutive single bonds at each cross-conjugated point in the cross-conjugated pathway: --CH=CH–C(=CH)–CH=CH--. Examples of cross-conjugation can be found in molecules such as benzophenone, divinylether, dendralenes and fullerene. Benzophenone is the Organic compound with the formula ( C 6 H 52C O, generally abbreviated Ph 2CO Dendralenes are discrete Acyclic cross-conjugated Polyenes The simplest dendralene is Butadiene (1 or dendralene followed by "C60" and "C-60" redirect here For other uses see C60 (disambiguation. The type of conjugation has an impact on reactivity and molecular electronic transitions. Molecular electronic transitions take place when Valence electrons in a Molecule are excited from one Energy level to a higher energy level

References

---

© 2009 citizendia.org; parts available under the terms of GNU Free Documentation License, from http://en.wikipedia.org
Dapyx Software network: MP3 Explorer | Ebook Manager | Zenithic