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Yttrium2
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Using ChatGPT to answer chemistry questions
I normally get a single boiling point when doing a search, but I put in a few keywords, and this was able to tell me a few different temperatures at
which I could pull off anethole under varying vacuum levels.
the chatgpt is pretty intuitive. --
you can say
"elaborate on the second paragraph"
and it will.
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but I found it useful in getting a few points at which I could shoot for under vacuum in a snap. Much quicker than I could here. -- Granted its not
always right, but -- it can help tremendously.
[Edited on 2/24/2023 by Yttrium2]
Edit by Texium: changed title for clarity
[Edited on 5-2-2023 by Texium]
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Yttrium2
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Texium
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I would never trust information delivered by an AI without a citation. If it cited its sources I’d be more impressed.
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Twospoons
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I wouldn't trust it either. I asked it to create some Excel code, which it did. On close inspection there were some oddities, so I challenged it, it
apologized, and gave 'corrected' code which was also odd. Challenged again - it apologized again and changed the code again. I gave up at that point.
Helicopter: "helico" -> spiral, "pter" -> with wings
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Loptr
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Don't trust ChatGPT. It generates words based on sub-word relationships, nothing more. It writes text that reads well, but anything that has a
structure below language rules, good luck.
We are working with it and others at work, and have found that LLMs have a limited future as far as what they can do by themselves without the
combination with other techniques. One of my projects uses LLMs for synthesis of large amounts of background discussion for training purposes. It's
pretty cool what it's capable of, but don't be fooled.
"Question everything generally thought to be obvious." - Dieter Rams
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j_sum1
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For those interested, Tom Scott on YT made quite a nice video about this topic, what the implications are and how well it managed to write code for a
project he had. Worth the 10 minutes or so to watch.
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BingTinsley
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ChatGPT "forgot" that the creation of diazonium salts most often (always?) requires in situ preparation of nitrous acid. And to make your HNO2 in a
solution containing a nitrite, you'll need to add some strong acid (HCl usually). The way that it ends with "thank you for bringing this to my
attention" gives me pause.
Oh, and it "advised" me that one can produce potassium hydroxide from potassium chloride and calcium hydroxide by the following equation:
2KCl + Ca(OH)2 → CaCl2 + 2KOH
Don't go blindly running reactions from ChatGPT - it can be a good tool to point you in the right direction, or to do the heavy lifting for your math
needs, but it doesn't give citations and it is posesses the ability to be wrong in many cases.
[Edited on 7-3-2023 by BingTinsley]
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Neal
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Is this the 1st ChatGPT thread in this forum? I just started a few days ago.
I was gonna start my own ChatGPT thread, but maybe we can share. What do you guys think of this:
How does crystal field theory explain why KMnO4 is purple, and how does ligand theory explain why KMnO4 is purple?
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Crystal field theory and ligand theory are two theoretical models that are used to describe the electronic properties of transition metal complexes.
These models can be used to explain why KMnO4 is purple.
According to crystal field theory, the color of a transition metal complex is determined by the energy difference between the d orbitals of the metal
ion. When light is absorbed by a complex, an electron in a lower energy d orbital is excited to a higher energy d orbital. The color of the complex is
determined by the wavelength of light that is absorbed, which corresponds to the energy difference between the d orbitals. In KMnO4, the Mn(VII) ion
is in an octahedral environment, and the purple color is due to the energy difference between the d orbitals of the Mn ion.
On the other hand, according to ligand field theory, the color of a transition metal complex is also determined by the interaction between the metal
ion and the ligands. The ligands can affect the energy levels of the d orbitals of the metal ion, and the color of the complex is determined by the
energy difference between the highest occupied molecular orbital (HOMO) of the ligands and the lowest unoccupied molecular orbital (LUMO) of the metal
ion. In KMnO4, the ligands are oxygen atoms from the permanganate ion, and the purple color is due to the interaction between the Mn ion and the
oxygen ligands.
Overall, both crystal field theory and ligand field theory can be used to explain why KMnO4 is purple. Crystal field theory explains the color in
terms of the energy difference between the d orbitals of the Mn ion, while ligand field theory explains the color in terms of the interaction between
the Mn ion and the oxygen ligands in the permanganate ion.
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Fulmen
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Exactly. It does not distinguish between language and facts, so it's a lot like a politician.
We're not banging rocks together here. We know how to put a man back together.
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Texium
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Well it’s not wrong, but it also doesn’t tell you anything specific about permanganate. The information it gives is very generalizable, see:
| Quote: | How does crystal field theory explain why KMnO4 is purple, and how does ligand theory explain why KMnO4 is purple?
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Crystal field theory and ligand theory are two theoretical models that are used to describe the electronic properties of transition metal complexes.
These models can be used to explain why [complex] is [color].
According to crystal field theory, the color of a transition metal complex is determined by the energy difference between the d orbitals of the metal
ion. When light is absorbed by a complex, an electron in a lower energy d orbital is excited to a higher energy d orbital. The color of the complex is
determined by the wavelength of light that is absorbed, which corresponds to the energy difference between the d orbitals. In [complex], the [metal]
ion is in an octahedral environment, and the [color] color is due to the energy difference between the d orbitals of the [metal] ion.
On the other hand, according to ligand field theory, the color of a transition metal complex is also determined by the interaction between the metal
ion and the ligands. The ligands can affect the energy levels of the d orbitals of the metal ion, and the color of the complex is determined by the
energy difference between the highest occupied molecular orbital (HOMO) of the ligands and the lowest unoccupied molecular orbital (LUMO) of the metal
ion. In [compex], the ligands are [ligand], and the [color] color is due to the interaction between the [metal] ion and the [ligands].
Overall, both crystal field theory and ligand field theory can be used to explain why [metal] is [color]. Crystal field theory explains the color in
terms of the energy difference between the d orbitals of the [metal] ion, while ligand field theory explains the color in terms of the interaction
between the [metal] ion and the [ligands] in the [complex] ion. |
It’s practically tautological. According to crystal field theory and ligand field theory KMnO4 is purple because these theories determine that KMnO4
should be purple. The only information that it is giving you is the simplest textbook overview of CFT and LFT, which you would have gotten in greater
detail if you had gone and read a textbook as I had suggested in your other thread, instead of asking an AI for spoonfeeding! Moreover, the answer
ignores some specifics about permanganate that differ from more typical complex ions.
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ShotBored
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It’s practically tautological.[/rquote]
Who on this board has machine learning/AI experience in some form? Maybe the ChatGPT framework could be refined by a few people with the programming
knowledge to assist with SciFinder or searching other scientific repositories and/or forums for helpful information? Would be a hell of a undertaking
for the hobbyist chemist(s) tho
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Jenks
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Quote: Originally posted by Loptr  | | Don't trust ChatGPT. It generates words based on sub-word relationships, nothing more. It writes text that reads well, but anything that has a
structure below language rules, good luck. |
It must be more than that. I asked it a few questions I knew the answer to and it gave reasonable answers, containing (as did the one starting this
thread) information that wasn't inherent in the question. Maybe it is just pulling up Wikipedia pages, but the information is coming from somewhere.
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Neal
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I read in the manual that it does not connect to the Internet? Which must be false. It was able to provide statistics on which police departments in
the U.S. kills the most, and it can only do that from connecting to the Internet?
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Loptr
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| Quote: Originally posted by Jenks | | Quote: Originally posted by Loptr | | Don't trust ChatGPT. It generates words based on sub-word relationships, nothing more. It writes text that reads well, but anything that has a
structure below language rules, good luck. |
It must be more than that. I asked it a few questions I knew the answer to and it gave reasonable answers, containing (as did the one starting this
thread) information that wasn't inherent in the question. Maybe it is just pulling up Wikipedia pages, but the information is coming from somewhere.
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The actual words are coming from what is called an embedding, which is essentially its vocabulary in simplified terms. When the model is being
trained, the training code splits the incoming words into tokens using Byte-Pair Tokenization, which causes sub-word boundaries to be established. You
can check the attached image, or this site: https://platform.openai.com/tokenizer. These sub-word boundaries, or tokens, as they are referred allows words to be generated that are much more
fluent in the given context, compared to word level embeddings that end up with weird combinations and tenses of words in the output. They become part
of a inconceivably massive conditional probability tensor that is used to represent the conditional probability of the first token to the second token
to the third token, and on and on and on, until it gets to the end of the tokens you have provided as input. Once it reaches the end of your input, it
is then in text completion mode, which determines the next character most likely to come next based on all the combined probabilities before it. All
it has to do is pick from the top of the list, or in cases where the next token isn't the definitive, all it has to do is randomly pick one. It builds
a complete sentence by asking for the next token based on all the previous over and over again until it reaches a output limit or receives a stop
code. That stop code be the result of multiple things, such as no known next token (unlikely for large LLMs), or if the neural network has been
trained with a strong sense of beginnings and endings of things (simplified).
You might be saying to yourself that this doesn't explain how a meaningful sentence is produced. The answer lies with the law of large numbers, and
the fact that human language isn't as unique, mysterious, or predictable as you think. There is so much communication that you witness in your daily
life that flies under your radar that makes absolutely no sense, but you just filter it out or accept it. What's amazing about training on that much
data is that emergent relationships between words, groups of words, and context start to present themselves, which is why it seems that ChatGPT is
intelligent, but it is only conditional probability on a massive scale.
Once the tokens have made their way to the output side of the neural network, they are decoded using the embeddings to get the final forms of the
words that are returned to you. There are no actual words within the LLM models, nor do they look up data from the internet. All of its knowledge is
contained within the weights of the matrices representing the hidden layers of the neural network. It is amazing... not going to lie, but not magic.
Once you understand how it works it loses its awe.
You could seriously equate an LLM with a very large Decision Tree.
Caveat: Yes, you can train an LLM within a much larger system to interpret requests and convert them into commands that are then fed to another
piece of software that can fetch the data, which can then be either returned to the user, or fed back into an LLM to generate a summary for the user.
I believe that Bing Chat AI is taking this approach since it seems to have the abilities to access internet data.
"Question everything generally thought to be obvious." - Dieter Rams
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Jenks
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| Quote: Originally posted by Loptr | | There are no actual words within the LLM models, nor do they look up data from the internet. All of its knowledge is contained within the weights of
the matrices representing the hidden layers of the neural network. |
How does it get physical data then? Here is a simple example:
What is the atomic weight of cobalt?
The atomic weight of cobalt is 58.933195.
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Loptr
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| Quote: Originally posted by Jenks | | Quote: Originally posted by Loptr | | There are no actual words within the LLM models, nor do they look up data from the internet. All of its knowledge is contained within the weights of
the matrices representing the hidden layers of the neural network. |
How does it get physical data then? Here is a simple example:
What is the atomic weight of cobalt?
The atomic weight of cobalt is 58.933195. |
There is a strong relationship within the weights/embeddings from the data it has ingested that has stated the atomic weight of cobalt is that value.
There is also a high probability of it eventually generating the wrong weight in some of its outputs.
I am telling you, though. It seems like magic, but its not. It is the size of the data that has been ingested along with the law of large
numbers/conditional probability. It's borderline emergent phenomena to us because our brains can't comprehend the all the shifts from probability
calculations through the hidden layers that lead to this output.
Haven't you heard how they are saying that even the people that have created these neural networks can't explain how they are so good at producing
meaningful output? It's because there is no secret.. there is no legible knowledge put inside the model. All of its knowledge is represented by an
extreme overlay of probabilities over a large number of artificial neurons that either activate, or dont, and the summation of all of those operations
spits out values that map to the token embeddings that can then be converted back to words.
It is all literally vectors and matrices.
I myself have written a small GPT neural network that I trained on a Shakespeare dataset, and it is able to do text completion on my prompts. I begin
by making a statement about something and not finishing it, and based on my input, it is able to filter all possible solutions to what could come
next, and then what remains can be selected based on its probability, random number, or even with a seed value to produce reproducible output that
follows the seed, which would be useful in giving the output a fingerprint. They are currently trying to implement this to give tools the ability to
detect whether text was generated by XYZ AI tool. There are also stochastic methods for detection, but this is also being pursued.
I have attached a couple papers for your reference on how this all works, along with a blog entry that breaks it down.
[Edited on 9-3-2023 by Loptr]
Attachment: InstructGPT_Training language models to follow instructions with human feedback_2203.02155.pdf (1.7MB)
This file has been downloaded 491 times
Attachment: Transformer_All you need is attention_1706.03762.pdf (2.1MB)
This file has been downloaded 199 times
Attachment: The GPT-3 Architecture, on a Napkin.pdf (2.9MB)
This file has been downloaded 296 times
"Question everything generally thought to be obvious." - Dieter Rams
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sarinox
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Using chatGPT to get recipe of a synthesis
Hello all,
Has any of you tried chatGPT to get recipe of a synthesis? How accurate could that be?
I tried it and asked it if it can tell me how to produce C6H5N3O7 ( I gave it a wrong formula to see what it will answer) here is the answer:
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Fulmen
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That sounds like an exceedingly bad idea. ChatGPT can reproduce believable text, but it doesn't actually know anything. So the answer can be both well
formulated, perfectly believable and positively wrong. Use with extreme care.
We're not banging rocks together here. We know how to put a man back together.
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Texium
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Ugh, not this again. ChatGPT is becoming the new bane of my existence. Now when people get scolded for asking for spoonfeeding here, they’ll just go
ask the robot for spoonfeeding and be awarded with bad and possibly dangerous advice. I’m genuinely concerned about the effects this will have on
how amateurs learn chemistry...
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j_sum1
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I don't believe patents. I won't believe chatgpt. At least not at face value.
What I might do is thoroughly check the procedure given. Then all I am doing is discovering whether good sources made their way into chatgpt's
database. I may as well do all the research myself.
I have never made picric acid and am not likely to. No way I am trusting what is written there. Is all sounds plausible. Except that it missed the
formula error. But... No quantities given. No temperatures mentioned. No mention of the mechanism. No mention that the third nitration is more
difficult. No reaction times given. Pretty vague hand-waving for safety. It reads well until you start to look for what is not there.
There is a significant risk of someone attempting synthesis of half a kilo of PA and ending up with no eyeballs. The risk is higher if someone
attempts to pass off a chatgpt script as genuine.
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Herr Haber
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This looks like a prime example of why *NOT* to use this tool to find a workup synthesis.
It missed the first step which is essential so it's not really a good start 
Maybe I'm naive but it seems to me that an amateur chemist who is genuinely interested in learning will find out that this tool is not good enough.
The spirit of adventure was upon me. Having nitric acid and copper, I had only to learn what the words 'act upon' meant. - Ira Remsen
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BromicAcid
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I think that if you already had a handle on a synthesis and knew multiple routes that it might be good for trying to find something new since it pulls
information from so many disparate resources. But if it's something that's a complete unknown you don't want to build you synthesis and understanding
on falsehoods.
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j_sum1
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| Quote: Originally posted by BromicAcid | | I think that if you already had a handle on a synthesis and knew multiple routes that it might be good for trying to find something new since it pulls
information from so many disparate resources. But if it's something that's a complete unknown you don't want to build you synthesis and understanding
on falsehoods. |
The difficulty with chatgpt (in any field) is knowing what is falsehood and what is not. The
fact that the AI is undiscerning and yet can pass itself off as authentic is the danger.
Edit
IOW, the gap between artificial intelligence and real stupidity is narrowing.
[Edited on 12-4-2023 by j_sum1]
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j_sum1
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Coincidently (or maybe not) astronomy youtuber Anton Petrov has just released a video exploring the exact same kinds of questions in a different
scientific field.
https://www.youtube.com/watch?v=LtjjSDQzCyA
I find his comments interesting because he is able to intelligently discuss its development and the timeline of its improvement in reference to the
currency of the data it is using. He also speaks with some authority since he has been invited to be involved in version 4 of chatgpt. (3.5 is the
current version.)
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sarinox
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Thank you all for sharing your opinion with me. I just found it interesting knowing the fact that these AIs are in their infantry stages maybe in
future they will become more and more accurate!
It was just a test, I had no intention to use this recipe. (I used the recipe mentioned in Organikum by Klaus Schwetlick to make Picric years ago!
Though I am not sure if I ended up with TNP)
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