Sigma Bonds in Organic Molecules
Organic molecules are often made up of one cyclic compound or more, such as benzene, and are often made up of many sigma bonds along with pi bonds. According to the sigma bond rule, the number of sigma bonds in a molecule is equivalent to the number of atoms plus the number of rings minus one.
- Nb σ = Nb atoms + Nb rings - 1
This can easily be concluded by realizing that the creation of bonds between atoms that are not connected in a ring requires the same number of atoms minus one (such as in hydrogen gas, H2, where there is only one sigma bond, or ammonia, NH3, where there are only 3 sigma bonds), and that rings do not obey this rule (such as benzene rings, which have 6 sigma bonds within the ring for 6 carbon atoms).
Read more about this topic: Sigma Bond
Famous quotes containing the words organic molecules, bonds and/or organic:
“The following general definition of an animal: a system of different organic molecules that have combined with one another, under the impulsion of a sensation similar to an obtuse and muffled sense of touch given to them by the creator of matter as a whole, until each one of them has found the most suitable position for its shape and comfort.”
—Denis Diderot (1713–1784)
“For, truly speaking, whoever provokes me to a good act or thought has given me a pledge of his fidelity to virtue,—he has come under the bonds to adhere to that cause to which we are jointly attached.”
—Ralph Waldo Emerson (1803–1882)
“The best thing about the sciences is their philosophical ingredient, like life for an organic body. If one dephilosophizes the sciences, what remains left? Earth, air, and water.”
—Novalis [Friedrich Von Hardenberg] (1772–1801)