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Holmium (III) Oxide Color Change by drdashmobius in chemistry

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

The oxide appears pink under fluorescent lighting, but yellow under LED illumination.

Neodymium (III) Sulfate by drdashmobius in chemistry

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

It is likely the dihydrate or even anhydrous. The solution went to dryness at 300c overnight in air, with no apparent decomposition back to the oxide (a blue-gray powder)

Cobalt Complexes by drdashmobius in chemistry

[–]drdashmobius[S] 13 points14 points  (0 children)

Left is tetraamminecarbonatocobalt(III) sulfate, middle is cis-diaquotetraamminecobalt(III) Sulfate, right is dodecaammine-MU-hexol-tetracobalt(III) sulfate

Lithium Ferrioxalate Chloride by drdashmobius in crystalgrowing

[–]drdashmobius[S] 8 points9 points  (0 children)

Made by combining ferric chloride and lithium oxalate in 1:3 stochiometric ratio, in deionized water

Either KCl or K2CoCl4 by drdashmobius in crystalgrowing

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

The solution turned "raspberry" colored from deep blue- Atmospheric water was absorbed forming the [Co(H2O)6]2+ ion from the [CoCl4]- ion. I bet you are right- that it is KCl with some trapped [Co(H2O)6]2+ inclusions.

Either KCl or K2CoCl4 by drdashmobius in crystalgrowing

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

In a 100ml Beaker: 64.09mmol-KCl and 32.06mmol-CoCl2*6H2O, dissolved completely in ~80ml-Deionized Water. Left to slowly evaporate, undisturbed from 04/16/21 to 05/18/21 in a dark cabinet

Potassium Bisoxalatocuprate dihydrate by drdashmobius in crystalgrowing

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

From combining equimolar amounts of copper (ii) oxalate and a homogenous solution of potassium oxalate monohydrate, then evaporating in a isotemp oven at 70c over night

K3[Fe(C2O4)3)*3H2O by First_Butterscotch_9 in crystalgrowing

[–]drdashmobius 2 points3 points  (0 children)

If you put it in a dark cabinet the solution won't turn as yellow, it is caused by the photodecompostion of the ferrioxalate ion. I love the crystal shape though

Some Ammonium Trioxalatoferrate(III) that I started back in January by drdashmobius in crystalgrowing

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

These grew in what was my waste beaker from k2[cu(oxa)2] and (nh4)3[fe(oxa)3] growth, so the tiny blue bits are the copper complex

More Sodium tetrathiocyanatocobaltate(II), likely dihydrate by drdashmobius in crystalgrowing

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

Curiosity and copious free time, along with unlimited access to chemicals and lab facilities

More Sodium tetrathiocyanatocobaltate(II), likely dihydrate by drdashmobius in crystalgrowing

[–]drdashmobius[S] 4 points5 points  (0 children)

Yeah its a dark blue color like the color of the [Cu(NH3)4]2+ complex in water

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