chempost central (canonically dead)

hellow egg 🥚... peepee ... im running on 0.5 hours of sleep and 2 cans of Monster Energy and writing mechanisms And im pretty syure im hallucinating

i like the havoc duo molecule a lot... its so havoc duo. thank u for showing me this creature. may i ask how the rings are like... Floating there around zirconium??? i've never seen anything like it. (my teacher always says transition metals are just Weird. and now i see this Thing. like whatttt)

and not to dox myself too... im chinese aswell but born and raised in america lmaoo (cant read or write any chinese 🔥🔥🔥) also taking ib chem rn! yeah i took two extremely similar chem courses but erm. anyways. i have free will. def more organic chem (albeit limited to just a handful of reaction mechanisms) and self-guided lab stuff which is my fave part tee bee aych. sooo fun because. Freedom to do whatever ur heart desires... truly something calming about turning ur brain off and getting into the flow of repeating the same titration like 15 times. also dopamine rush when u actually see a trend in your data. (this is one of the simple joys of life. reject gambling. accept being a nerd)

also why did they make potassium permanganate such a pretty colour cause someitmes i just wanna drink it if ykwim.

ty for chatting w me. hope these questions arent annoying im just a silly high schooler that likes chemistry...

HI HI HELLOW YAY SO AWESOME TO HAVE YOU BACK.!!!!!!!!!!!! ^_^^^^^^ ur so right i love the colors of KMnO4... the crystals are so pretty and the solution looks dope too. forbbiden Grape Juice... i was really happy about the neat formula i ended up with as well. before actually working on it i already expected to end up with a cool solution but its still awesome that the analysis ended uup with a simple (and lest we forget a powerful) formula. Such is the awesomeness of thermodynamics... if i knew nothing about thermodynamics and you asked me to determine if a proposed reaction under certain conditions is possible or not i would probably cry. realisticly how would one without thermodynamics knowledge approach this quetsion! not like we can ask the molecules can we... and the beauty of thermodynamics that it enables us to solve such difficult (and important) problems by easily obtaining values of relevant thermodynamic functions (like ΔfH or ΔcH, Sm, and ΔfG) with a calorimeter (but more often and realistically by looking it up on a table) and then doing some simple algebra to come up with solutions to the vital questions "if reactions occur", "under what conditions" and "how much do they occur" which helps us synthesize drugs, produce fertilizer on industrial scales, so on and so forth, which are feats that wouldve otherwise been unimaginable if not for thermodynamics.

THIS IS GETTING TOO LONG AGAIN AHHHHHH SORRY.......... but to answer ur question about the havoc duo molecule :smirk: if you are familiar with the Hit Series "AP Chemistry" youd know that atoms are held in place thanks to Bonds between them. what are bonds but a stick with two atoms on each side right?! get ready to have your mind blown... lets check this epic molecule out and pay close attention to that one bond with Pd (ignore tge two red dots i was having fun with macbook screenshot editing):

wtf.. why does it look like a C=C pi bond is bonding with a single Pd atom? it looks like that becuasE IT IS THAT. yuipppp... we're looking at a complex with a "polyhapto" ligand. On an intuitive level this thing is straight up nightmare fuel. but on an orbital level this actually makes sense. pi electrons live in pi orbitals which are at the end of the day still orbitals. so whats stopping pi orbitals to interact and bond with empty orbitals of other atoms! nothimg is what ^_^.

lets step it up a bit. we know that double bonds in benzene arent really typical double bonds at all. they are instead delocalized. the double bonds go wherever they please in the ring. So is the case with the cyclopentadienide anion (abbreviated as Cp-).

here comes the shocker: even delocalized bonds such as the one you'd find in benzene are NOT safe from this bonding with transition metals madness. check THIS bond out:

yuippp. thats an entire ass molecule sized ligand bonding to iron with its funky delocalized bonds. and if you thought the silliness would end here, im sorry to report that (purely by coincidence) in 1950, this happened in a lab:

we are looking at a complex consisting of two cyclopentadienyl rings sandwiching (the proper scientific term is really "sandwiching") a central iron atom. this is peak tomfoolery. it looks almost comical. and most awesomely Such sandwich compounds are very stable! havoc duo molecule finds itself in a similar position:

HELLOW THANK YOU SO MUCH... mee?! im So Cool... chem poasting slash mandizo is cool... no... it cant Be....

I GOTTA SAY its pretty hard to pick a favurite molecule. every molecule is so swag in their own ways. but if I had to pick one (and this is quite relevant to your ask) it would be the Havoc Duo Molecule

(the woke mob calls it Zirconocene dichloride) they just let chemists make whatever nowadyas and its so awesome

ap chem... wow... not to dox myself but ive been in china my whole life so far but im very intrigued in various chemistry curricula all around the world. teaching something is just as cool to learning it to me. ap chem is basically first year undergraduate general chemistry. AS A SOLIDLY DESIGNED COURSE IT CERTAINLY DELIVERS. i just hope that it would introduce some preliminary organic chemistry knowledge. my wish list

ILL SHARE WITH YOU WHAT IVE BEEN WORKING ON AS OF LATE. as a sneak peak...

we dont always get what we want in life. sadly this is also the case for amides... amides are molecules that look like the above two. with an oxygen atom and a nitrogen atom bonding in a specific way. blue ball is Optional. anyways often times in organic synthesis we would reeeeally love to turn things that are attached to that nitrogen into other things. as shown in the above diagram! a more complete reaction scheme is as followed:

THIS UNFORTUNATELY THIS EASIER SAID THAN DONE. for various reasons, conversion rates of the original amide is usually straight garbage. its commonly around 50% with plentiful opportunities to go much lower to single digit or 0%. its a huge waste of resources, energy and time. QUITE AWESOMELY THOUGH, THE BELOW REACTION (which is used to make a precursor of Tamibarotene. tamibarotene haas been approved for leukemia treatment) , with equaimolar reactants, REACHES A CONVERSION RATE OF 92%:

this is quite Gobsmacking. so why would this be? we can actually investigate with fairly simple general chemistry knowledge. we have 5 reactions worth discussing here and Allow me to list them all.

Reaction (1) is the main reaction we care about. (2) and (3) are reactions involving the acid TfOH and amines which act as bases. (4) and (5) are reactions involving solid salts dissolving and precipitating. lets list the five reactions and their equilibrium constants here:

Assuming that solubilities of R1R2NH2TfO and R3NH3TfO are s1 and s2 (mol L^-1) and with some dope algebra:

we can see that the ratio of concentration of B (the amide we want) and A (the amide we want to turn into B) at equilibrium, which we will call r, is

and this is Directly linked to conversion rates of A because convertion rate of A is

and THIS IS SO AWESOME. i was really surprised that r would have such a simple form and that this formula which we derived with nothing but simple assumptions (were not even dealing with numbers here) and basic knowledge can explain so muchs. For example lets solve the stupidly high 92% mystery:

A high conversion rate means a higher value of r. Had side reactions (2) (3) (4) and (5) not have happened, we would have r = sqrt(K1) (this one is left for the reader to prove ... smirk). so what we are trying to find out here is when does the following inequality hold:

One solution would be that when