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CHEM 371
Alkanes and Nomenclature
43
Chemistry
Undergraduate 3
02/21/2007

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Term
primary carbon
Definition
bonded to one other C atom
Term
secondary carbon
Definition
bonded to two other C atoms
Term
tertiary carbon
Definition
bonded to three other C atoms
Term
quaternary carbon
Definition
bonded to four other C atoms
Term
primary hydrogen
Definition
bonded on a C bonded to one other C atom
Term
secondary hydrogen
Definition
on a C bonded to two other C atoms
Term
tertiary hydrogen
Definition
on a C bonded to three other C atoms
Term
homologous series
Definition
group of compounds that differ by only a CH2 group
Term
C atoms: 1
Definition
methane
Term
C atoms: 2
Definition
ethane
Term
C atoms: 3
Definition
propane
Term
C atoms: 4
Definition
butane
Term
C atoms: 5
Definition
pentane
Term
C atoms: 6
Definition
hexane
Term
C atoms: 7
Definition
heptane
Term
C atoms: 8
Definition
octane
Term
C atoms: 9
Definition
nonane
Term
C atoms: 10
Definition
decane
Term
isopropyl group
Definition
[image]
Term
n-butyl group
Definition
[image]
Term
isobutyl
Definition
[image]
Term
sec-butyl
Definition
[image]
Term
tert-butyl
Definition
[image]
Term
alkane bonds
Definition
sp3, tertrahedral geometry, nonpolar bonds, exhibit only weak van der Waals forces
Term
alkanes related to bp
Definition
bp increasaes as the # of carbons increase because of increased surface area
Term
bp of alkane isomers
Definition
bp decreases with branching because of decreased surface area
Term
melting point of alkanes
Definition
mp increases as symmetry increases
Term
steriochemistry
Definition
the study of 3D structure
Term
conformations
Definition
different arrangements of molecules from rotating carbon-carbon sigma bonds
Term
Gauche conformations
Definition
higher in energy, steric strain
Term
torsional strain
Definition
strain caused by eclipsing interactions
Term
steric strain
Definition
strain produced when atoms are forced too close to each other
Term
angle strain
Definition
strain produced when bond angles deviate from 109.5 degrees
Term
axial hydrogens
Definition
located above and below the ring
Term
equatorial hydrogens
Definition
located in the plane of the ring
Term
stereoisomers
Definition
isomers that differ only in the way the atoms are oriented in space
Term
cis isomer
Definition
has two groups on the same side of the ring
Term
trans isomer
Definition
has two groups on opposite sides of the ring
Term
oxidation
Definition
loss of electrons
Term
reduction
Definition
gain of electrons
Term
oxidation results in an...
Definition
increase of C-Z bonds; decrease of C-H bonds
Term
reduction results in a(n)...
Definition
decrease in C-Z bonds; increase of C-H bonds
Term
lipids
Definition
biomolecules that are soluble in organic solvents and insoluble in water; composed of nonpolar c-H and C-C bonds, and have few polar functional groups
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