Part B: Newman projections. F H CH(CH3)2 H H 1. Construct a...

Part B: Newman projections. F H CH(CH3)2 H H 1. Construct a model of the molecule above (match the configuration exactly) and look down the indicated bond. Take a photo from this perspective with your student card visible in the photo. 2. Using your model, construct an energy diagram to show the variation in the free energy of the molecule as the FRONT ATOM is rotated CLOCKWISE from 0° to 360° in 60° increments. The conformation illustrated above represents the 0° rotation point. In your energy diagram, you should clearly show the relative energies of each conformer. 3. Draw Newman projections for each conformation on the bottom of your diagram.

Transcript

00:01 So here we see we are having this 3d structure.

00:03 So here this is a wedge and here it is vash, it is fluorine, here this is central atom, and here it is hydrogen, and here it is hydrogen, and here it is also hydrogen.

00:18 So this thing it is like this and this is a plane of the angle.

00:22 Here it is ch, ch3, and hold twice, and here it is hydrogen, and here it is also hydrogen so this particular thing it is here so we are making this newman's projection so we will be making and converting this diagram into a newman projection so this is a front carbon here it is a hydrogen here it is also hydrogen and here it is fluorine like this and this circle it is representing back of the back in back carbon this is carbon too and here it is hydrogen here it is hydrogen and and here it is ch 3, 2.

01:05 So this thing is here.

01:07 So here, theta, it is we can say 180 degrees.

01:11 And that is why what we can say is an anti -confirmation.

01:16 So this is our answer to the part 1.

01:19 So when we look at the part 2 here, what is happening, we have to construct an energy diagram.

01:24 So part 2 and part 3 can be answered simultaneously as we have to make the newman's projection in the part 3.

01:31 So let us see.

01:32 So this is a carbon one and this is a zero degree confirmation.

01:36 It is a key confirmation.

01:37 So this is a front carbon and this is a front carbon.

01:41 And further, if we see, this is a pack carbon and here it is again hydrogen.

01:47 It is again hydrogen.

01:48 And here it is ch3.

01:53 Ch3 hold twice.

01:55 So this is our theta, which is here in this case, here.

02:00 And this is our theta, which is here.

02:00 And this is.

02:00 This is an eclipsed conformation.

02:02 So it's an eclipsed conformation...

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