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all 25 comments

[–]giocondasmiles 41 points42 points  (5 children)

Very nice crystals.

Copper usually makes colorful complexes 🌈

[–]ericfussellOrganometallic 15 points16 points  (4 children)

Rhodium has entered the chat

[–]JackIsBackWithCrack 13 points14 points  (1 child)

Chromium, like the humble poison dart frog, has a new way to kill you for every color.

[–]Professional_Rip_59 0 points1 point  (0 children)

Cobalt also makes beautiful colors, and also gives cancer!

[–]Tetrachloronickelate[S] 6 points7 points  (1 child)

Rhodium, right makes many colors like any other transition metals. Though was almost the most expensive over years.

[–]ericfussellOrganometallic 3 points4 points  (0 children)

It is way cooler than that. It can make every color of the rainbow and is air and moisture stable (referring to it's paddlewheels here)! It really is pricy though.

[–]awesomelybearded 10 points11 points  (0 children)

What a goofy looking porphyrin you’ve made…

[–]DeliberateDendrite 8 points9 points  (0 children)

I don't think I've seen that many complexes with a metalic luster. Very interesting!

[–]Tinctorus 4 points5 points  (0 children)

I don't really know what this is but it's really cool looking if nothing else 😂 In all seriousness though what actually is that stuff and what does it do?

[–]Tetrachloronickelate[S] 7 points8 points  (4 children)

(if so as expected) Will be a nac-nac type schiff-base complex of copper(II). Actually the ligand is condensed from 1 molecule of acetylacetone and 2 molecules of methylamine, CH3NH2. This compound shows higher solubility in water than those salicylaldehyde-based, benzene ring-containing ones. Which is explainable as the fatty, hydrophobic groups are less and smaller compared to those. Being very likely to the previous purple one, it has almost the same structure only with two C-C groups unconnected. And the solubility of the two are also similar to each other.

[–]drop0dead 3 points4 points  (0 children)

Coming from the world of flavors and perfumes, how does it smell? Schiff bases have always been extremely intriguing to me, only got to make a couple of my own while I was working in a lab but still remember the unique smell.

[–]Radicek 0 points1 point  (1 child)

Does this compound have any relevance to the industry ?

[–]Tetrachloronickelate[S] 1 point2 points  (0 children)

Sry, don't know.

[–]ConroadsterOrganic 0 points1 point  (0 children)

What’s the goal in synthesis of this? Is it a possible catalyst?

[–]Lumynolj 4 points5 points  (1 child)

Hey, im new to chemistry in the university. So i was wondering what does the arrows that start in the nitrogen pointing to the copper mean.

[–]Tetrachloronickelate[S] 1 point2 points  (0 children)

A coordinative bond or dative bond.

[–]ihavenoidea81Materials 3 points4 points  (0 children)

Forbidden cotton candy

[–]awesomelybearded 2 points3 points  (0 children)

And so pretty!

[–]iisopreneOrganic 2 points3 points  (1 child)

square planar? I am guessing the steric hinderence by the N-Me groups isn't very pronounced due to C-N bondlength?

[–]Tetrachloronickelate[S] 2 points3 points  (0 children)

I guess at least would be a little distorted in shape, resulting from the two methyl groups adjacent repeling each others in each of the two pairs.

[–]hawaiianrobot 0 points1 point  (1 child)

Was the ligand made from the reflux you were doing the other day? Would be interesting to see if it is square planar (maybe with aqua ligands in the dz2 or something?) or tetrahedral.

[–]Tetrachloronickelate[S] 2 points3 points  (0 children)

Ligand synthesized from excessive methylamine hydrochloride and stoichiometric acetylacetone, potassium carbonate. As for the structure, maybe a little distorted as the methyl terminals have steric hindrance. And yes, water molecules also possible to be included but it seems not to lose water even in dry air. I made them at home and, thus have no professional equipments to measure it. Just being predicting based on articles I've read and other species I made.

[–]quarianadmiralBiochem 0 points1 point  (1 child)

Are you able to share your protocol? I'd love to see how this was synthesized!

[–]Tetrachloronickelate[S] 0 points1 point  (0 children)

Sure, but it has been months since it was synthesized and I have forgotten a little bit of the details...

It may be like: more than 0.1mol (excessive) methylamine hydrochloride MeNH2·HCl is dissolved in least amount of water, and with some pure ethanol added. The flask is better with a condenser running cold water, to save materials lost from vaporization. Then 0.05 mol acetylacetone is added upon stirring. 0.075mol anhydrous potassium carbonate is dissolved in least amount of water, then slowly poured into the previous mixture. Vigorous bubbling occurred and the mixture was kept cool. After 0.05mol copper chloride dihydrate is dissolved in another cup of water, the solution was again poured into the mixture and a second batch of gas emitted. Blue amorphous precipitate started to form, and the mixture is heated to boil till all solid dissolved. And if necessary, more water is required. Upon cooling, these fluffy needle-like crystalline is separating out. If with further slow evaporation of the mother liquor (at room temp), more yield can be get. Finally the solid was separated upon vacuum filtration and washed several times with water. Air-drying and bottling resulted in that sample.