Those who are eager to learn will not be bothered by frivolous things like sound quality. Your presentation was crystal clear and helped us learn the concepts of symmetry applications in IR and Raman spectroscopy. Thank you so much!
Hi, there! I am currently in grad school for chemistry, and I just want you to know that I sincerely appreciate the video. It helped a lot, and I am so sorry about the terrible comments. Professors and teachers don't receive enough recognition for what they have to do with the little they have. Thank you so much and have a good one!
Yes, I know the microphone was too close. The university only bought me a headset microphone to use. That was all I had to go with. Assistant profs aren't rich, and California is expensive. I recorded these mainly for my class, but made them public at the request of several friends. So please be kind with the comments. I am a person with feelings. They have done more good helping people learn than they have annoyed people with my voice. If they really bother you that much, you can pay me to fix it. LOL
sorry to be off topic but does anyone know of a method to log back into an instagram account? I was stupid lost the login password. I would love any tricks you can offer me!
the mic was perfect wdym? no one is complaining and you dont have to explain yourself in any way, this video was really great! if someone doesnt like this video, they can sincerely fuck off and watch some other video, you did a great job here.
This video helped me a lot! Thank you so much! My professor is not instructing us whatsoever and is just giving us data. Granted it is a lab course, but the other lecture course has not covered this material. This walks through everything very nicely!
You are most welcome. I believe in God and his son, Jesus Christ. I do my best to honor him and help others. And when I screw up, I am grateful for his grace. :-)
Thank you for the video. Maybe I haven't been listening close enough, but one question remains: You stated, the convention is that the highest fold axis of symmetry is aligned with the z-axis, while the x-axis is perpendicular to the plane of the molecules. In the example of the water-molecule, this would give us two options for the x-axis. Either it points into the "paper"-plane or out of it. In your case it points into the plane, which poses a left-handed coordinate system, if I am not mistaking. Is there a reason why to prefere a left-handed-system? It puzzles me, because in the most cases I was told to prefer a right-handed-system. Thanks ahead
Great video! Could you please explain to me why the B1 mode is not IR active? It is associated with the linear function "x" in the C2V point group character Table so it should be IR active I would have thought.
Thank you so much for your wonderful explanation! It's crystal clear. Do you know whether the same analysis could be applied to crystals rather than the simple molecule here? Thank you.
The order is only given by the number of classes when each class has only one element, which only occurs for Abelian groups. In general one needs to write down the order/cardinality of each class as well.
Hi everyone, I need help. For sources like symmetry-obbertein, they find xz plane's value is 3 and yz value is 1. I did this method to 1,1 difluoromethylene but in these sites, they also changed xz plane's value with yz plane. Which one is true? This method is logical. I couldn't understand.
Hi Melissa, (On the last slide) I am not quite clear on what "Contribution per atom" implies (and therefore couldn't figure how those numbers were assigned for that line). Can you please shed some lights there?
When you calculate the irreducible representation for a different operation than C2, for example, C3 operation. Since it only rotates 60 degrees, do we count it as 1, -1 or 0?
