slide 3 Flashcards
Of any element carbon has the greatest “flexibility”
in forming molecules
All living organisms are made up of chemicals
based mostly on the element carbon.
*
Organic chemistry
is the study of carbon
compounds.
forms of pure carbon
diamond,
graphite,
buckballs/buckytubes
Carbon atoms can form diverse
molecules by bonding to up to four
other atoms.
Carbon has four valence electrons.
The electron configuration of carbon gives it
covalent capability with many different elements
Formation of Bonds with Carbon
CO2,
urea
A carbon skeleton is the basis of organic compounds.
Carbon skeletons can vary in:
length, branching, position of double bonds, ring structure *
Hydrocarbons
are molecules consisting of only
carbon and hydrogen
They are found as a component of many cellular
organic molecules.
Isomers *
are molecules with the same molecular
formula but different structures and properties.
Three types of isomers are:
*
- Structural isomers
- Geometric isomers
- Enantiomers
Structural isomers
differ in arrangements of atoms.
Possibilities increase with size of the carbon skeleton
Geometric isomers have
the same covalent
partnerships, but differ in spatial arrangements
around a double bond.
These include cis and trans geometries with
different biological properties.
Enantiomers are
mirror images of each other.
This difference is important in pharmaceuticals
Functional groups*
are the parts of molecules
involved in chemical reactions
Functional groups are
“additions” to a carbon
skeleton in an organic molecule
Six functional groups are important to life:*
Hydroxyl, Carbonyl, Carboxyl, Amino,
Sulfhydryl, Phosphate
Estrogen and
testosterone
are both
steroids, differing only
in functional groups.
Hydroxyl groups
are polar, can form hydrogen bonds
with water and help dissolve organic molecules
Carboxyl groups act
as an acid because the covalent
bond between oxygen and hydrogen is so polar
Amino groups
act as bases
Two sulfhydryl groups
can react to
form a cross-linking covalent bond.
Phosphate groups
can react
with water, releasing energy.