I did not perform this conversion yet, but I think there could be an easy way of finding out if you could just replace ammonia with the carbonate:
Dissolve zinc powder in acetic acid, maybe just leave overnight if you dont have a stirrer.
Add sodium carbonate.
Now just check if you see any clouding, then it would mean zinc carbonate will precipitate. If nothing happens you should be safe just exchanging both I guess.
Same thing goes to Manske. You could simply check out what happens if you add excess nacl to the mix without any alkaloids and check if only zinc gives you clouding.
Regardless of clouding I guess THH would also be "mansk-able" just like harmalas, as it shares many solubility traits it seems.
Quote:What if we base out the harmalas with sodium carbonate first, then add ammonium carbonate to the mixture. Would this cause the magnesium/zinc salts that precipitated along with the harmalas to dissolve back into the solution?
If it turns out that zinc will crash out with with the carbonate then I dont think you will have any luck adding a "potential soluble" partner for the zinc(2+) afterwards. In a mix of a metal ion with anions which would render it either soluble or insoluble, the metal will catch up with the insoluble and precipitate, the "soluble partner" will not bring it back into solution. That is because the precipitated salt (in that case it
could be zinc carbonate) will escape the equilibrium between both forms and ultimately lead to 100 % zinc carbonate and 0 % zinc hydroxide (this is what you get when adding ammonia).