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The Volatile Chemist
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[*] posted on 9-1-2015 at 15:53


Wow. It's real pretty. Probably expensive, considering the nickel and ethylenediamine.



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DraconicAcid
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[*] posted on 9-1-2015 at 16:46


Not for me- I used some of the nickel waste generated by my students, and the college bought me my ethylenediamine.



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[*] posted on 9-1-2015 at 18:32


DraconicAcid: Perhaps this paper may be of use: DOI: 10.1039/dt9730001537 I suspect that bis-ethylenediamineoxolatonickel (II) may not exist as a simple complex, but there may be something to having a u-oxolato arrangement.
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[*] posted on 9-1-2015 at 19:29


May not appear to be the prettiest thing, but I was pretty impressed with myself.
Someone want to guess what the purple colour is?

image.jpg - 1.3MB
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Brain&Force
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[*] posted on 9-1-2015 at 23:28


KMnO4



Raney nickel can't hydrogenate dank memes.
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[*] posted on 10-1-2015 at 00:21


Quote: Originally posted by DraconicAcid  
Crystals of tris(ethylenediamine)nickel(II) oxalate. I was trying to make a bis(en) complex with a coordinated oxalate, but refluxing was not taking off the third en ligand, nor was heating the solid to over 300 oC.


Hi, I really like these crystals but want to know more details about synthesis. I suppose you started with nickel oxalate (insoluble in water) and added ethylenediamine that formed soluble complex. Am I right?

How much of ethylediamine did you use? What would happen if you do this with molar ratio Ni:en 1:2? Did you try that?
____________________________________________________________________________________________________________________

If someone is interested in mineralogy, here is picture of beatiful vanadinite crystal, more pictures from this series you can find on my web -> Minerals series

<IMG SRC="http://chem.pieceofscience.com/wp-content/uploads/2015/01/vanadinite.jpg" ALT="some text" WIDTH=900 HEIGHT=600>




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[*] posted on 10-1-2015 at 04:37


Quote: Originally posted by Tdep  

Someone want to guess what the purple colour is?


If I told you guys it was gold metal, would you believe me? Colloidal gold, sub micrometer particles resulting from the decomposition of 'gold fulminate'.
Pretty :3
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[*] posted on 10-1-2015 at 17:45


Quote: Originally posted by Hegi  

Hi, I really like these crystals but want to know more details about synthesis. I suppose you started with nickel oxalate (insoluble in water) and added ethylenediamine that formed soluble complex. Am I right?

How much of ethylediamine did you use? What would happen if you do this with molar ratio Ni:en 1:2? Did you try that?


I seem to recall trying that, but finding that the nickel oxalate simply wouldn't dissolve until I added excess en, despite heating the aqueous suspension.




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[*] posted on 10-1-2015 at 18:34


Tdep i was just about to say it was a gold something because i have seen even gold plating turn reddish and rainbow even.today i was melting a sterling candle stick holder and there was some blackened charred stuff in my crucible. i thought the black stuff was burnt borax but when i poured out the sterling into cold water i noticed red/rainbow coloring.i scooped out the silver shot and all the silver is now gold colored and i cant even see silver.the only thing i melted on that crucible was a pair of gold filled eyeglass frames and i thought i plucked it all out.i had no idea that sterling cement filled candle stick holders had a very thin foil of silver on the outside,hell not much thicker than aluminum foil.i thought i hit pay dirt at first when i found that sterling.
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[*] posted on 10-1-2015 at 21:45


Quote: Originally posted by Tdep  
Quote: Originally posted by Tdep  

Someone want to guess what the purple colour is?


If I told you guys it was gold metal, would you believe me? Colloidal gold, sub micrometer particles resulting from the decomposition of 'gold fulminate'.
Pretty :3


When can we expect a video?

Definitely post it here. Gold-based explosives are a REALLY exotic thing to see.




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Molecular Manipulations
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[*] posted on 10-1-2015 at 23:49


Wow Hegi, those are some beautiful crystals. I also have some vanadinite ore, but the crystals are smaller and less defined.
I'll post a picture when I can.




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[*] posted on 11-1-2015 at 02:36


Quote: Originally posted by Brain&Force  


When can we expect a video?

Possibly Wednesday? It's a real shame gold is so expensive and rare, this compound is great fun to play with. And the metal is so pretty to look at...

Also, god I love good mineral shots. I have some vanadium minerals too, no where near as beautiful as the previous photo though!
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[*] posted on 11-1-2015 at 02:44


Quote: Originally posted by Molecular Manipulations  
Wow Hegi, those are some beautiful crystals. I also have some vanadinite ore, but the crystals are smaller and less defined.
I'll post a picture when I can.


Thanks, this piece did not cost a lot, about 30 dollars. The most expensive is mimetite. I´ll be waiting for your picture. ;)




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[*] posted on 11-1-2015 at 11:45


What's you-all's favorite minerals? At the moment, mine are beryl, tourmaline, and apophylite, the middle being my fav.
I'll post some apophylite crystals I own, sometime.




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[*] posted on 11-1-2015 at 11:55


Quote: Originally posted by The Volatile Chemist  
What's you-all's favorite minerals? At the moment, mine are beryl, tourmaline, and apophylite, the middle being my fav.
I'll post some apophylite crystals I own, sometime.


I´ve got many minerals in my collection. I´m collecting sulfide minerals and also carbonates. But I have many other pieces. My favourite is tiny octahedral spinel. Here´s a photo.

spinel.jpg - 236kB




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[*] posted on 11-1-2015 at 18:41


Quote: Originally posted by Hegi  


I´ll be waiting for your picture. ;)

Well I hope you didn't think that I was a photographer:D
Literally taken on my GoPro...
While I'm at it I might as well post some other photo's too.

Here's the vanadinite:
GOPR0726.JPG - 217kB GOPR0730.JPG - 219kB GOPR0747.JPG - 232kBG0020737.JPG - 172kB

See if you guys can guess the rest.

[Edited on 12-1-2015 by Molecular Manipulations]




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[*] posted on 11-1-2015 at 19:23


Man, I really wish I could get a GoPro - I want to shoot videos, and that would be convenient!

Do the below compounds contain vanadium?

[Edited on 12.1.2015 by Brain&Force]




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[*] posted on 11-1-2015 at 19:43


Yeah, it's pretty nice, I got it for Christmas. Not great quality but it works. I've also started shooting for a YT channel I'm about to start.
None of the other pictures contain vanadium.




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[*] posted on 11-1-2015 at 20:19


Say, do you want to join Rador Labs (links in sig)? We all want to shoot some videos for our channel and it would be great if you could join us.



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[*] posted on 12-1-2015 at 16:44


The procedure behind the flask is what the target compound is. The picture was taken after removing ethanol from the reaction. The product can be used as a pH indicator, colorless below ~pH 6 and yellowish above that and becoming a faded yellow above pH 11 (to be tested)


image.jpg - 2MB




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[*] posted on 12-1-2015 at 17:06


Mercury compound and mercury? Say, HgS ? Looks a bit too pink for HgS, though...



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[*] posted on 12-1-2015 at 17:08


Quote: Originally posted by Mailinmypocket  
The procedure behind the flask is what the target compound is. The picture was taken after removing ethanol from the reaction. The product can be used as a pH indicator, colorless below ~pH 6 and yellowish above that and becoming a faded yellow above pH 11 (to be tested)



That's crazy! (Sorry for the double post. I have a hard time reading it, what is it, and what'd you use to make it?




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[*] posted on 12-1-2015 at 18:19


It it putatively 2-methoxy-4-((phenylimino)methyl) phenol... I have still not isolated the solid and done a m.p. yet. The procedure is found in this document, all you need is vanillin, aniline and ethanol.

http://download.portalgaruda.org/article.php?article=170688&...





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[*] posted on 12-1-2015 at 18:19




012.JPG - 1.4MB
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[*] posted on 12-1-2015 at 18:42


Quote: Originally posted by The Volatile Chemist  
Mercury compound and mercury? Say, HgS ? Looks a bit too pink for HgS, though...

Mercury is right. Nobody will ever guess the pink crystal because it's a mineral not a pure substance, it's fluorite - calcium fluoride.




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