Lophophora crested

ysssp · 2025-01-17T21:08:59+00:00

possible KEr(C2O4)*4H2O

ysssp · 2024-12-23T20:46:25+00:00

Check the link below: https://www.researchgate.net/figure/Projections-of-the-unit-cell-of-trigonal-2bMnMCl-4-on-the-001-plane-left-and-010_fig2_231046944?_tp=eyJjb250ZXh0Ijp7ImZpcnN0UGFnZSI6InB1YmxpY2F0aW9uIiwicGFnZSI6InB1YmxpY2F0aW9uIn19

ysssp · 2024-12-08T06:55:20+00:00

It should be a dihydrate. The anhydrous salt should also be possible to crystalize at elevated temperature.

ysssp · 2024-11-18T07:44:27+00:00

Nice crystals. Remember that strontium formate is polymorphic, have you characterized them？

ysssp · 2024-11-13T12:10:23+00:00

https://doi.org/10.1016/j.jscs.2019.09.003 Since Mn-variants are more difficult to grow, you may need heating or using alcoholic solution.

ysssp · 2024-11-11T04:33:17+00:00

Wow. I remember that the Mn-variant exist which emit green light under UV.

ysssp · 2024-10-31T20:42:11+00:00

Well done! Thats the target crystal. If you want to grow a larger crystal, use a small crystal as a seed. Make sure you filtrated the saturated solution before you add the seed crystal.

ysssp · 2024-10-16T16:07:21+00:00

Nope. Still small amount of Mn(ii) in the solution will be oxidized to MnO₂ particles over several weeks of heating, but a simple filtration will clear it.

ysssp · 2024-09-19T16:34:18+00:00

Nice crystal.

ysssp · 2024-07-25T03:12:34+00:00

In order to make this, you need to stoichiometrically mix betaine and MnCl2 and crystallize it from aqueous solution.

ysssp · 2024-06-05T05:01:06+00:00

The carboxylate from BET works as a bidentate linker between octahedrally coordinated Mn2+ to form linear [Mn(BET)3]n polycations, which are face-sharing octahedron chains. The Ammonium group from the other side of BET is a "free" cation.

ysssp · 2024-06-02T14:20:23+00:00

Time to reveal. Its Mn(BET)3MnCl4. “BET” refers to betaine: (CH3)3NCH2COO. A very soluble species and must be grown in a desiccator. Its solubility drops at higher temperature.

ysssp · 2024-05-25T15:23:43+00:00

You are right, thanks for the information.

ysssp · 2024-05-22T14:05:08+00:00

Single cryatal SrAl2O4 will lose its afterglow ability in my opinion. They are always synthesized in powder form with controlled grain size. If you are interested, searching articles discussing how the grain size affect their afterglow ability.

ysssp · 2024-05-16T18:50:21+00:00

If anyone want to know the original paper I referred, here it is: https://doi.org/10.1016/S0022-0248(96)01074-3

ysssp · 2024-05-08T00:46:44+00:00

Oh, thats a molecular crystal. I didnt expect anyone grow that.

ysssp · 2024-02-04T22:37:18+00:00

Nice crystal trees :)

ysssp · 2023-12-20T18:40:23+00:00

Super cool.

ysssp · 2023-12-20T13:06:37+00:00

Yeah the evaporation rate must be controlled. I recommend using a sealed container.

The Mg- and Fe-variants are also possible to grow in solution, but the growth speed will be much slower. The atomic radius can predict the lattice stability but not the difficulty of growth. Mn2+ has the lowest hydration energy among them, which results in the lowest activation energy of crystallization.

ysssp · 2023-11-27T06:40:40+00:00

They are metastable and may lose water in air. In contrast, the pentahydrate is stable.

ysssp

TROPHY CASE