Finding Help with Computational Chemistry on PF

AI Thread Summary
The discussion centers on a user's experience with Gaussian software for calculating optimization and UV spectra of organometallic compounds, specifically using the B3LYP/6-311G basis set. The user encounters a syntax error due to incorrectly including the job name in the geometry optimization line. A solution is provided, suggesting the removal of the job name to resolve the error. Additionally, there is a request for advice on the appropriate basis set and functional for calculating molecular orbital energies for compounds containing carbon, hydrogen, nitrogen, and copper.
EL AALLAOUI Najla
Messages
8
Reaction score
0
How did you find PF?: via Google

Hello everyone, I hope you are doing well?

Recently, I’ve been trying to calculate the optimization and Uv spectra of organometallic compounds using the Gaussian software .it’s my first time for the computational chemistry and I am inexperienced . When I run the measure using B3LYP/6-311G basis set I have an error in my calculation and I don't know what the problem is. So, I would be grateful if you show me how to solve it and could you give me the advice about the proper basis set and functional to calculate the MO energies knowing that I have C,H,N and Cu as atoms . And I attach the message received.

Thank you very Much
 

Attachments

  • Capture.PNG
    Capture.PNG
    19 KB · Views: 165
Chemistry news on Phys.org
It looks like for some reason you’ve put the name of your job in the geometry optimization line. Gaussian is trying to read it as an option and is throwing a syntax error as a result. Remove that part and it should probably work.
 
It seems like a simple enough question: what is the solubility of epsom salt in water at 20°C? A graph or table showing how it varies with temperature would be a bonus. But upon searching the internet I have been unable to determine this with confidence. Wikipedia gives the value of 113g/100ml. But other sources disagree and I can't find a definitive source for the information. I even asked chatgpt but it couldn't be sure either. I thought, naively, that this would be easy to look up without...
I was introduced to the Octet Rule recently and make me wonder, why does 8 valence electrons or a full p orbital always make an element inert? What is so special with a full p orbital? Like take Calcium for an example, its outer orbital is filled but its only the s orbital thats filled so its still reactive not so much as the Alkaline metals but still pretty reactive. Can someone explain it to me? Thanks!!
Back
Top