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Author: Subject: Pretty Pictures (2)
fluorescence
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[*] posted on 20-4-2017 at 07:24


Wow nice, are they transparent to some extend ? On the photo it looks like you might be able to see through them a bit ?



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HeYBrO
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[*] posted on 21-4-2017 at 03:15


Quote: Originally posted by fluorescence  
Wow nice, are they transparent to some extend ? On the photo it looks like you might be able to see through them a bit ?
Thanks. Ill check and let you know, as i can't remember how they were in person.
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[*] posted on 24-4-2017 at 08:34


Made some CuCa(CH3COO)4.6H2O
Really hard to make, 4:1 Ca:Cu ratio does not always work, several failed attempts has been made.
The solution is quite supersaturated.. Need to dilute again the mother liquor to obtain the seed crystals.

IMG_20170425_003316.jpg - 2MB
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The Volatile Chemist
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[*] posted on 24-4-2017 at 12:33


HeYBrO and Crystalcage, cool copper crystals! Copper Calcium Acetate is definitely on my todo list. And HeYBrO's would be too if I had Bipy....:/



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fluorescence
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[*] posted on 3-5-2017 at 13:06


Well this is not really a photo but I still love the structure. Had to explain why hydrates PdO can be dehydrated for YouTube and compared it to the dehydration of CaCl2x6H2O when I found out that for some reason there is no good picture of the Hexahydrate anywhere on the web which I found really sad. So I took the crystal structure data from the literature and simulated the tricapped trigonal prismatic structure again.

You can see how each Ca has a coordination number of 9. Along the axis many of these stack on their triangular surfaces so you end up with 6/2 + 3 caps per Ca which equals 6 H2O and thus is called hexahydrate.

As you can see there is no Chloride to be seen. I didn't add them to make it easier to see but they are surrounding this structure with hydrogen bonds towards the water hydrogens. If you want to dehydrate that thermally there is no real contact between Ca and Cl which is why other compounds form as well.

I find this structure really nice because you don't expact something like that for a simple Calcium :D

CaCl2.jpg - 201kB




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[*] posted on 7-5-2017 at 21:58


CrO3, the largest crystal is ~10mm across.

IMG_1616.JPG - 1.3MBIMG_1614.JPG - 1.3MB




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[*] posted on 7-5-2017 at 22:17


Are you sure that is CrO3? I thought the crystals looked like needles....



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[*] posted on 8-5-2017 at 11:02


Tried my hand at synthesizing xanthopurpurin a little while ago and my first sample of purified material crystallized in a strange, but very pretty way.



IMG_20170508_143558762.jpg - 1.6MB
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[*] posted on 8-5-2017 at 12:39


Wow that's beautiful! That would make a great desktop background.
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[*] posted on 9-5-2017 at 12:33



I had a concentrated sodium sulfate solution sitting in a beaker on the bench for a few days. When I checked the lab today I noticed some very beautiful crystals, this was the best one.



IMG_0828.JPG - 1.2MB IMG_0830.JPG - 1.2MB IMG_0833.JPG - 1.5MB IMG_0838.JPG - 1.2MB
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[*] posted on 16-5-2017 at 17:13


Nice crystal! To be honest that's one thing ive never really tried to crystallize, I'll have to try it. Was attempting to grow epsom salt crystals but accidentally left it on the hot plate the other day...now I have some nice anhydrous epsom salt...



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Justin Blaise
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[*] posted on 17-5-2017 at 20:00


Panache, how did you crystallize that CrO3?
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fluorescence
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[*] posted on 20-5-2017 at 06:14


Beautiful color :D

[Os(Thiourea)6]3-

TEST.jpg - 60kB




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[*] posted on 24-5-2017 at 22:03


Some potassium chloride crystals slowly grown from water.

IMG_3349.JPG - 639kBIMG_3350.JPG - 557kB




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[*] posted on 25-5-2017 at 10:43


Molten silver on a piece of drywall; you can see the reflection of the room
IMAG1936.jpg - 344kB

My element collection in no particular order
ElementCollection - Copy.JPG - 1.4MB

Bubble of boric acid as I dehydrate it to make boron trioxide
IMAG1981.jpg - 722kB

Crystals of boric acid on a beaker
IMAG2091_1.jpg - 321kB

[Edited on 26-5-2017 by Plunkett]
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[*] posted on 25-5-2017 at 18:39


That element collection shot is pretty cool. I like it a lot. :)
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[*] posted on 27-5-2017 at 12:41



A few flowers I was keeping, with stems split between two water sources, each dyed a different color.
IMG_20170226_xylemPhloem.jpg - 1.9MB IMG_20170307_slideFlower.jpg - 1.6MB

I took a few pictures under the microscope. The first shows the sharp partitioning in the flower petals. The second is interesting because it shows an upwelling of one color in a sea of the other!



2017-03-07-231043.jpg - 18kB 2017-03-07-231236.jpg - 18kB




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[*] posted on 28-5-2017 at 09:35


Some zinc sulfate I finally arsed myself to recrystallize it from its solution, after sitting in a closet for 2 years.
Zinc_sulfate_crystals.jpg - 2.6MB




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[*] posted on 30-5-2017 at 11:30


One picture is bunch of copper(II) acetate crystals.

In next pictures is my attempt to double phantom crystal, chrome alum crystal in chrome alum+ KAl alum mixture in KAl alum. The inner black crystal is not visible tho so it's more like normal phantom crystal.


IMG_20170530_210345_HDR.jpg - 467kB IMG_20170530_210507_HDR.jpg - 426kB IMG_20170530_210115_HDR.jpg - 506kB
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[*] posted on 30-5-2017 at 15:35



Here's some crystallized copper acetate from a spill:
IMG_1031.JPG - 1.8MB
(Open in a new tab for the full experience :P)


And this is thermochromism from flower pigments. The alcoholic extract of lilac petals changes color when heated (and cooled). The first photo is at room temperature, In the second the right test tube has been heated to ~70C, and the third photo is when it has cooled back down to room temp.
IMG_1018.JPG - 906kB IMG_1026.JPG - 932kB IMG_1028.JPG - 938kB
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[*] posted on 30-5-2017 at 16:42


I'm pretty sure most of the people here have seen the various oxidation states of manganese, but I'll post it anyway. I particularly like the +2 oxidation state because of the slight gradient from dark to light pink then to clear. The +7 and +6 are way too dark (probably too concentrated of KMnO4 solution), and the +4 simply precipitated :(.

oxidationstatesmanganese.jpg - 888kB
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[*] posted on 5-6-2017 at 01:43


First is a sealed vial containing reacting bromine and sulfur in n-butanol. The end products will presumably be sulfuric acid and bromobutane.

Second is a pool of galinstan with other metals dissolved in it from prior experiments. They form an oxide crust on its surface.

Third is an attempt to oxidize phenylalanine past the amine stage. It ended up forming a sphere at the center of the test tube.

IMG_20170605_053520.jpg - 308kBIMG_20170120_124959.jpg - 346kBIMG_20170514_191835.jpg - 297kB
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[*] posted on 5-6-2017 at 08:19


My first success in making K2[OsCl6]. As mentioned before I am not using pure OsO4 but a very contaminated solution which also has other reactive compounds from the dissolution process of Os metal in it. So I cannot simply copy experiments but have to redesign each of them. No matter what text I used I was not able to make it directly but had to go to [OsO2(OH)4]2- first which is insoluble in Ethanol and can be cleaned that way and then turn this into the chloro complex. Still, I am pretty satisfied with the results, an insoluble red powder. The problem is I probably added too much or heated it too long as it decomposed a few seconds afterward.

i260^cimgpsh_orig.png - 281kB




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[*] posted on 7-6-2017 at 19:05


My attempt at the Copper/Acetone "lamp" experiment (ketene generator), as well as my first attempt at synthesizing picric acid from acetylsalicylic acid(recrystalization), and my twenty-fifth (unsuccessful) attempt at nitrocellulose:

https://i.imgur.com/x3Nkv04.jpg
https://i.imgur.com/dGigrRw.jpg
https://i.imgur.com/QLUNuzD.jpg




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[*] posted on 14-6-2017 at 20:07


Potassium chlorate crystals from my second batch(9.22g):

https://i.imgur.com/Cah6s84.jpg

Hydrazine sulfate precipitating (24.24g from using hand stirring):

https://i.imgur.com/2sktdCU.jpg




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