Organic Chemistry Nomenclature Of Alkanes
Alkanes are used as the basis for naming the majority of organic compounds their nomenclature.
Organic chemistry nomenclature of alkanes. Here are some basic rules we use for the alkane nomenclature. For alkanes the following rules apply. Longer chain alkanes are well known and their names may be found in many reference and text books. In other words an alkane consists of hydrogen and carbon atoms arranged in a tree structure in which all the carboncarbon bonds are single.
The properties of organic molecules depend on the structure and knowing the names of organic compounds allow us to communicate with other chemists. Cis but 2 ene trans but 2 ene. In organic chemistry an alkane or paraffin a historical name that also has other meanings is an acyclic saturated hydrocarbon. Well be learning about different aspects of molecular structure including common functional groups and conformations.
All names of alkanes are built from the list of parent names. Although their reactivities are often rather uninteresting they provide an excellent basis for understanding bonding conformation and other important concepts which can be generalized to more useful molecules. It is iupac convention to describe all alkenes using absolute descriptors of z same side and e opposite with the cahningoldprelog priority rules. Hence c 5 h 12 is called pentane c 6 h 14 is called hexane c 7 h 16 is called heptane and so forth.
Alkanes are the simplest organic molecules consisting solely of singly bonded carbon and hydrogen atoms. The suffixof the name reflects the types of functional groups present on or within the. Alkanes with five or more carbon atoms are named by adding the suffix ane to the appropriate numerical multiplier except the terminal a is removed from the basic numerical term. In general the base part of the name reflects the numberof carbons in what you have assigned to be the parent chain.
Simple cis and trans isomers may be indicated with a prefixed cis or trans. Alkanes have the general formula c n h 2n2. Naming alkanes with ethyl groups opens a modal alkane with isopropyl. The following table lists the iupac names assigned to simple continuous chain alkanes from c 1 to c 10.
Alkanes have the general chemical formula c n h 2n2. Although many different types of nomenclature or naming systems were employed in the past today only the international union of pure and applied chemistry iupac nomenclature is acceptable for all scientific publications. Naming alkanes is one of the first topics youre going to cover in your organic chemistry course. Longer chain alkanes are well known and their names may be found in many reference and text books.
A common ane suffix identifies these compounds as alkanes. Nomenclature of alkanes is not particularly difficult but it can be tricky and tedious. The following table lists the iupac names assigned to simple continuous chain alkanes from c 1 to c 10.