[D4rr3n]

Can someone please help me out with the following, Im not sure what the result would be?


Cs2Se + Sc = ?

Caesium Selenide  + Scamdium = ?

[AWK]

Scandium is unable to replace Caesium in its compounds. This reaction is eventuallay possible in very high temperature (over boiling point of Cs, ie about 1000 Kelvins), in absolute neutral atmosphere (pure noble gases)
Scandium is a trivalent metal

[D4rr3n]

Thank you AWK!

Will the result be CsSeSc ?


If the compound was heated in a evacuated container would this also work?

[AWK]

Thank you AWK!

Will the result be CsSeSc ?


If the compound was heated in a evacuated container would this also work?

A few possibilities exist:
Cs+Sc2Se3 (balance this reaction)
Cs+(CsSe)3Sc (unbalanced)
Cs+CsSeSc

An atmosphere without N2, O2 and water is needed

Just printing error correction!

[D4rr3n]

My knowledge of chemistry is not particularly impressive LOL

Am I right in thinking that: Cs+(CsSe)3Sc is not possible?


Cs + CsSeSc looks like a possibility, as for Cs+Sc2Se3 I have no idea and not having any luck balancing it.

[AWK]

3Cs2Se + 2Sc = 6Cs + Sc2Se3

I think, I got suggestion in descending probability. But, note - between boiling points of Cs and Sc is over 1000 Kelvins and many different reaction may be thermodynamically preferable?

[D4rr3n]

So theoretically start with Caesium Selenide and scandium metal powder. Heat them to 1000k in a controlled atmosphere and you end up with the reverse, Scandium Selenide and Caesium metal?


Is CsSeSc + Cs not probable?

[D4rr3n]

Was trying to make CsSeSc by heating Caesium Selenide with Scandium metal powder however take a look at the quote I received for Caesium Selenide, its shocking

1) cesium selenide Cs2Se 97% (T)
> 1 g - 1935 EUR
> 10 g - 2576 EUR
> 25 g - 3184 EUR
> 100 g - 4966 EUR
> 500 g - 14679 EUR

[AWK]

Its quite normal price taking into account possible method (and conditions) for synthesis of this reagent from elemental caesium and selenium

[D4rr3n]

I contacted a chemist about this and he helpfully gave me the following method for producing Caesium Selenide:

"Selenium powder dissolves in Hydrazine and by slow addition of concentrated CsCl solution, you precipitate Caesium Selenide"

I would need to make 25g of this, I was wondering if there was a less hazardous method (don't want to get involved with Hydrazine) of producing Caesium Selenide? If you know of any usefull books that would be most appreciated