einstein was not a physicist too if you look at his schooling.
ive come across many that could not read a spectra without there database to read it for them.
then ive come across dudes who write audio plugins for VST who know Fourier transform better than any physical chemist or analyst.
better than pointing out one can not do for you is to find the person who can do what you want.
at a guess with cabbage ph indicator the acid changes the electron density and possibly even the orbital shapes around the functional groups in the molecule.
this in turn makes it so some light frequencies can travel through the outer electron shell and other frequencies will reflect.
if the shells are jumping orbitals changing from s to sp ect or the actual shape of the molecule
is deforming (again which could change the electron shells) I do not know.
there is no breakage or building of bonds so in a way I guess one could say that no reaction has occurred to the molecule
I would not call my self a chemist
though I am very interested.
The colors of anthocyanins extracted from red cabbage vary from red at low pH to blue and green at high pH (Cacace & Mazza, 2003). Color changes in this pigment are due to the presence of phenolic or conjugated substances, such as cyanidin, delphinidin, pelargonidin, peonidin and petunidin which are subjected to structural changes when there is a variation in pH (Shahid & Mohammad, 2013).
In an acidic solution, the oxonium ion results in an extended conjugation of double bonds through three rings of the aglycone moiety, which helps in the absorption of photons in the visible spectra. Addition of a base disrupts the conjugation of double bonds between the second and third rings and results in absorption of photons in the UV range rather than in the visible range. The effect of pH change on increasing the number of conjugated double bonds in the molecule lowers the energy level of the electronic transition between the ground state and the excited states, and in turn results in the absorption of photons at greater wavelength.
Source: N. Chigurupati et al. / International Journal of Pharmaceutics 241 (2002) 293–299
Here is a test result from a cbd conversion using t41 going for d9. The rxn went fine but the distillation was done over 18 hours at high temps with a vac level of 1500 mTorr. I believe a leaky distillation rig combined with high heat and extended residence time caused this.
Any ideas?
For the record, I personally would never have run the distillation under those parameters. The distiller said it was normal and would be fine. I disagreed and here we are.
The lab used is fairly new and they obviously dont have a d10 reference.
Chatting with them about that, because my understanding is that it’s quite clear to anyone who looks at the spectral response that they’re not actually looking at CBC, would be the neighborly thing to do.
If they’re not willing to look at the problem you should hold that against them imo.
the thcv value is interesting to me too, and may not be thcv
I think the “thcv” converted from d8 while the d10 converted from d9.
I believe this because this rxn routine has produced very similar ratios in d8 and d9 when distilled properly in the past.
Just that if you convert between thcs, you are not removing anything, just changing the double bond position. Still, the reaction to CBN needs to remove 4 hydrogens, and seems to happen stepwise, two by two, ie double bonds are formed one after the other . Depending if you start from d8 or d10, there is two possilities for the intermediate.
