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3 -- Part 5: STRUCTURE AND STEREOCHEMISTRY OF ALKANES
The most stable part of cyclohexane was puckered upward and downward.
Both parts of cyclohexane were puckered upward.
The steric strain is minimized by twisting.
The steric repulsion of the hydrogens is reduced by the twist boat.
There is a flat part of the ring.
They differ in their bonding sequence.
To cleave large alkanes, heating them.
Cracking in the presence of a catalyst.
The mixture of alkanes can be given by the presence of hydrogen.
There is a ring of atoms.
A compound has a number of alkyl groups bonding to a carbon atom.
There are bonds lined up with each other in the Newman projection.
The conformation with 0deg is an eclipsed one.
There are six bonds on the cyclohexane ring that are directed towards the "equator" of the ring.
The bonds are shown in green.
In the presence of heat or light, the reaction of alkanes with halogens can be used to make products with hydrogen atoms.
It is attracted to water.
Repelled by water.
The International Union of Pure and Applied Chemistry adopted a set of rules.
A thin, volatile oil distilled from petroleum, with a boiling range higher than that of gasoline and lower than that of diesel fuel.
Most of the Kerosene is refined for use as jet fuel.
A substance consisting of methane and water.
A way of drawing the structure of a molecule by looking at the bond between two carbon atoms.
The octane number is the percentage of isooctane (2,2,4-trimethylpentane) in a blend that begins to knock at the same compression ratio as the gasoline being tested.
The extra strain associated with the compound's structure is composed of angle strain and torsional strain.
The strain is associated with the bond angles being distorted.
There is a strain associated with bonds in the ring.
There were no double or triple bonds.
A way of thinking about the carbon-carbon bond is by looking down at an angle.
There is a conformation that is not staggered.
The bonds are equal in the projection.
There is a staggered conformation.
Two groups are so close together that their electron clouds experience interference.
The names that follow the rules of the International Union of Pure and Applied Chemistry are the same as IUPAC names.
The amount of energy required to twist a bond.
There is resistance to twisting.
Each skill is followed by problem numbers.
Draw the structure and give the formula if you have the common name of an alkane.
Use the IUPAC rules to name Problems 3-33, 34, 35, 39, 43, alkanes, cycloalkanes, and bicyclic alkanes.
Explain how the angle strain and torsional strain combine to give the total ring strain.
Draw cyclohexane chair shapes.
Place the larger groups in the center of the cyclohexanes to get the most stable conformations.
There are 18 isomeric alkanes.
Two of the constitutional isomers show geometric stereoisomerism.
Make sure you have the same name for structures that are the same and different structures that are different.
Name the five cycloalkane structures of formula C5H10 Show the cis and trans stereoisomers.
The formula C6H12 does not show geometric isomerism.
Four of the formula C6H12 have cis-trans isomers.
The structure should correspond with each name.
Draw and name two structures that match the description.
There were from one to six carbons.
The names of the alkanes should be given to the IUPAC.
The following names are incomplete or incorrect, but they represent real structures.
There are eight different alkyl groups.
They should be given systematic names.
The degree of substitution of the head carbon atom bonded to the main chain is labeled in each case.
To draw the most stable conformer for each compound, use a Newman projection.
All the positions should be labeled with -1,3-dimethylcyclohexane.
The higher-energy and lower-energy structures should be labeled.
The difference in energy between the two structures is about 23 kJ per mole.
The substituents of each compound should be labeled with the chair conformations.
Determine which one is more stable.
The IUPAC name can be assigned by converting each Newman projection to the equivalent line-angle formula.
The C bond is more stable than the anti bond.
Explain this curious result by drawing Newman projections of these conformers.
This is the most stable part of cyclohexanehexol.
The projection is of a substituted cyclohexane.
The structure can be drawn using wedge and dash.
Give the name of the organization.
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