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The Volatile Chemist
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Wow. It's real pretty. Probably expensive, considering the nickel and ethylenediamine.
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DraconicAcid
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Not for me- I used some of the nickel waste generated by my students, and the college bought me my ethylenediamine.
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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UC235
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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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Tdep
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May not appear to be the prettiest thing, but I was pretty impressed with myself.
Someone want to guess what the purple colour is?
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Brain&Force
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KMnO4
At the end of the day, simulating atoms doesn't beat working with the real things...
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Hegi
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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?
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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>
Our webpage has been shut down forever cause nobody was willing to contribute. Shame on you all!!!
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Tdep
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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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DraconicAcid
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| 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.
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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cyanureeves
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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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Brain&Force
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| Quote: Originally posted by Tdep |
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.
At the end of the day, simulating atoms doesn't beat working with the real things...
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Molecular Manipulations
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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.
-The manipulator
We are all here on earth to help others; what on earth the others are here for I don't know. -W. H. Auden
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Tdep
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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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Hegi
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Thanks, this piece did not cost a lot, about 30 dollars. The most expensive is mimetite. I´ll be waiting for your picture. 
Our webpage has been shut down forever cause nobody was willing to contribute. Shame on you all!!!
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The Volatile Chemist
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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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Hegi
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| 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.
Our webpage has been shut down forever cause nobody was willing to contribute. Shame on you all!!!
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Molecular Manipulations
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Well I hope you didn't think that I was a photographer
Literally taken on my GoPro...
While I'm at it I might as well post some other photo's too.
Here's the vanadinite:
   
See if you guys can guess the rest.
[Edited on 12-1-2015 by Molecular Manipulations]
-The manipulator
We are all here on earth to help others; what on earth the others are here for I don't know. -W. H. Auden
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Brain&Force
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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]
At the end of the day, simulating atoms doesn't beat working with the real things...
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Molecular Manipulations
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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.
-The manipulator
We are all here on earth to help others; what on earth the others are here for I don't know. -W. H. Auden
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Brain&Force
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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.
At the end of the day, simulating atoms doesn't beat working with the real things...
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Mailinmypocket
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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)
Note to self: Tare the damned flask.
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The Volatile Chemist
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Mercury compound and mercury? Say, HgS ? Looks a bit too pink for HgS, though...
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The Volatile Chemist
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| 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)
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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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Mailinmypocket
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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&...
Note to self: Tare the damned flask.
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Hawkguy
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Molecular Manipulations
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Mercury is right. Nobody will ever guess the pink crystal because it's a mineral not a pure substance, it's fluorite - calcium fluoride.
-The manipulator
We are all here on earth to help others; what on earth the others are here for I don't know. -W. H. Auden
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