Molecular models Flashcards
Physical models that represent molecules and also the atoms and bonds found in these molecules
Molecular models
Molecular models represent molecules with _________
balls of different colors
Molecular models represent bonds with ________
Stick or short connectors
Disadvantage of 2D structures
can’t appreciate the geometry accurately
Advantage of ball and stick model
accurately represent shape
Other ways of drawing structures
perspective formula and space-filling formula
Can ethane have hydrogen that is found on the same plane?
No
does hydrogen lies on the same for ethene
yes
Exists due to rotation of single bonds
Conformation isomers
Conformational isomers include:
Aliphatic and alicyclic alkanes
are conformational isomers the same compound
yes
why is staggered more stable that eclipsed
the electron cloud of staggered is more far away from each other
the electron clouds of two hydrogen repel each other and strain due to how close they are
flagpole hydrogen
reason why bat conformation is unstable
flagpole hydrogen
If structure is rotated, the carbons are in eclipsed conformation leading to unstability
Are boat and chair conformation the same compound
yes
True or false: geometric isomers are configurational isomers
true
Differences of configurational and conformational isomers
they are not interconvertible and not due to rotation about single bonds
type of conformational isomers due to restricted rotation about double bonds or alicylic
geometric isomers
are geometric isomers the same compounds
no, they are different compounds since the double bond can not be rotated and possesses its properties double
how to change the geometric isomers
bond must be broken
differences between geometric sequence of double bonds and alkenes
alkenes the double bond is reference point, while the ring is the reference point for alicylic.
Does di-substituted cycloalkanes have geometric isomers as well
yes
what do you look for in alkenes
substituent on same or opposite side with respect the double bond as opposed to the ring
does aromatic rings have geometric isomers
No, since the rings are sp2 hybridized leading to trigonal planar
