What is a bicyclic alkane?

What is a bicyclic alkane?

The name of the bicyclic compound is based on the name of the alkane having the same number of carbons as there are in the ring system. This name follows the prefix �bicyclo�, and a set of brackets enclosing numbers which define, in descending order, the number of carbons between the bridgehead carbons.

How do you name a bicyclo alkane?

IUPAC names for bicylic alkanes have the format bicyclo[a.b.c]parent name.

1. Count the total number of carbons across the entire molecule.
2. Count the number of carbons to the left, and to the right, and above your bridgehead carbons.
3. Write your final IUPAC name as bicyclo[a.b.c]parent name.

What is a bicyclic system?

31.1 – Saturated alicyclic hydrocarbon systems consisting of two rings only, having two or more atoms in common, take the name of an open chain hydrocarbon containing the same total number of carbon atoms preceded by the prefix “bicyclo-“.

Are bicyclic compounds aromatic?

Bicycloaromaticity in chemistry is an extension of the concept of homoaromaticity with two aromatic ring currents situated in a non-planar molecule and sharing the same electrons. This system has been described as aromatic with two ring systems of 26 (n=6) and 34 (n=8) electrons.

How do you name fused bicyclic compounds?

When naming simple fused bicyclic compounds, the same method as for bridged bicyclic compounds is applied, except the third path between the two bridgehead atoms now consists of zero atoms. Therefore, fused bicyclic compounds have a “0” included in the brackets. For example, decalin is named bicyclo[4.4. 0]decane.

How do you identify bridgehead carbon?

A bridgehead carbon atom is a carbon atom which is shared by at least two rings. The hydrogen atom which is attached to a bridgehead carbon may be referred to as a bridgehead hydrogen.

What is PAH in chemistry?

Polycyclic aromatic hydrocarbons (PAHs) are a class of chemicals that occur naturally in coal, crude oil, and gasoline. They also are produced when coal, oil, gas, wood, garbage, and tobacco are burned. Naphthalene is a PAH that is produced commercially in the United States to make other chemicals and mothballs.

How can you identify aromatic antiaromatic and Nonaromatic?

A molecule is aromatic if it is cyclic, planar, completely conjugated compound with 4n + 2 π electrons. It is antiaromatic if all of this is correct except it has 4n electrons, Any deviation from these criteria makes it non-aromatic.

Is benzene a PAH?

By definition, polycyclic aromatic hydrocarbons have multiple cycles, precluding benzene from being considered a PAH. Some sources, such as the US EPA and CDC, consider naphthalene to be the simplest PAH. Other authors consider PAHs to start with the tricyclic species phenanthrene and anthracene.

What foods contain PAH?

The following foods could contain PAHs:

• bivalve shellfish accumulate PAHs from seawater and sediment Limits are therefore applied to ensure that excessively-contaminated mussels or oysters do not enter the food chain.
• smoked products.
• certain cooked meat products such as flame-grilled burgers.