1b

Question 1

s bonding and antibonding orbital explanation

Answer 1

s = circle

s bonding = o-o same colour

s antibonding = o-o different colours

Question 2

spx hybrid orbital explanation: what it looks like whe nhybrids bond etc

Answer 2

chicken wing (one colour)

bonding ( small large small ) small both the same colour (along // within one bond)

antibonding (centre of each chicken wing is on the end of a line (pointing in opposite directions and both wings are different colours)

Question 3

p orbital explanation

Answer 3

dumbbell shape , 2diff colours

bonding = 2 dumbbells on each end of a line,, same colour above // below

antibonding = 2 dumbbells on each end of a line,, different colours above // below)

Question 4

filling an antibonding orbital with e- means what

Answer 4

it means ur breaking that bond

Question 5

the whole point of this lecture was to make the most stable cc+!! we want it to be

Answer 5

tertiary

Question 6

okay so if we want a cc+ to be tertiary,, but it isnt,, what do we need to do

Answer 6

we need to look at groups near it and see if they can migrate,, so a cc+ can form where they were, aka a more stable //substituted carbon atom

Question 7

how can we tell what can migrate to give a more stable cc+

Answer 7

we need to draw the mo on the molecule, draw the molecule big so its easier to see.

identify the homo and the lumo!!

when u draw the mos, if there is an mo that is parallel to the p orbital,, they have constructive overlap,, meaning that THAT group can migrate to the cc+ and form a more stable one!!!!

Question 8

for migration we are looking for

Answer 8

parallel ness

Question 9

if orbitals are orthogonal what does that mean

Answer 9

it means there is no constructive overlap and so that group cannottttt migrate to form a more stable CC+

theyre at right angles to eachother

Question 10

whats the difference between a cc+ rarrangement and a sn1 reaction

Answer 10

sn1: the nuc is a different moleucle. remember u lose the lg,, u form a cc and then the nuc attacks it.

for a cc+,, u lose smt that forms a cc+,, then u look for constructive overlap and use that bond as the nuc,, the bnd aka the molecule and its e- go. bc its the homo!! so the e- in that bond corresponding to that molecule go!!

Question 11

does the most stable CC+ occur at once

Answer 11

nope

sometimes u have to migrate more than one thing

aka a methyl and then a H!! but if it gets u to the most stable cc+,, do it girl

do it step by step tho so u dont get confused