[h3ll4s]

Hello everyone,

I am new here and I have a question about a certain metal-organic compound. I would like to use Barium(II) 2,2,6,6-tetramethylheptanedionate (tmhd) as a precursor for CVD but I dont know if it is soluble in eg methanol or ethanol. I have already tried using Barium acetylacetonate but it is not soluble in any alcohol. I am only asking since the compound is fairly expensive and I hope that someone can help me. I have also seen that people used Barium methoxyethoxytetramethylheptanedionate (methd)2 and that it has better properties in terms of volatility and decomposition tough I could not find any suppliers.

I am looking forward to your replies.

Many thanks
H3ll4s

[phth]

Ba(acac)₂, Ba(tmhd)₂ and Ba(methd)₂ will be soluble in tetraglyme, which is a good solvent because of vapor pressure and stabilization of electrostatic forces.  Ba(acac)₂  is soluble in methanol according to literature, but maybe not at room temp (did you check this?).  Any solvent like tetraglyme should work; bipyridine is another.

Ba(acac)₂ costs ~$1000/mol, but it can easily be made from BaCl₂*2water (~$27/mol) and acetylacetone (~$12/mol).  Cheaper to make.  Ba(tmhd)₂ can be made cheaply in two steps.

Ba(methd)₂ can be made in 5 steps; attached jpg is my opinion of the best path to the ligand.  If you have questions or someone wants to correct me, please post a comment.