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Listed here are mainly average market prices for bulk trade of commodities. Data on elements' abundance in Earth's crust is added for comparison. As of 2020, the most expensive non-synthetic element by both mass and volume is rhodium. It is followed by caesium, iridium and palladium by mass and iridium, gold and platinum by volume.
Indium acetate is an acetate of indium, with the chemical formula In(CH 3 COO) 3. It is soluble in water, acetic acid and mineral acids. [ 1 ] It is the precursor of indium-containing compounds such as the solar cell materials CuInS 2 [ 2 ] and indium phosphide quantum dots .
Ruthenium(III) acetate, commonly known as basic ruthenium acetate, [1] describes a family of salts where the cation has the formula [Ru 3 O(O 2 CCH 3) 6 (OH 2) 3] +.A representative derivative is the dihydrate of the tetrafluoroborate salt [Ru 3 O(O 2 CCH 3) 6 (OH 2) 3]BF 4 (H 2 O) 2, which is the source of the data in the table above. [2]
Ruthenium(III) acetylacetonate is a coordination complex with the formula Ru(O 2 C 5 H 7) 3. O 2 C 5 H 7 − is the ligand called acetylacetonate. This compound exists as a dark red solid that is soluble in most organic solvents. [3] It is used as a precursor to other compounds of ruthenium.
3 in hydrochloric acid, is often used as a starting material for the synthesis of other Ir(III) compounds. [2] Another compound used as a starting material is ammonium hexachloroiridate(III), (NH 4) 3 IrCl 6. In the presence of air, iridium metal dissolves in molten alkali-metal cyanides to produce the Ir(CN) 3− 6 (hexacyanoiridate) ion.
Iridium acetylacetonate is the iridium coordination complex with the formula Ir(O 2 C 5 H 7) 3, which is sometimes known as Ir(acac) 3. The molecule has D 3 -symmetry. [ 2 ] It is a yellow-orange solid that is soluble in organic solvents.
The complex TiCl 2 (acac) 2 is fluxional in solution, the NMR spectrum exhibiting a single methyl resonance at room temperature. [ 6 ] Unlike Ti(IV), both Zr(IV) and Hf(IV) bind four bidentate acetylacetonates, reflecting the larger radius of these metals.
Indium(III) chloride is the chemical compound with the formula In Cl 3 which forms a tetrahydrate. This salt is a white, flaky solid with applications in organic synthesis as a Lewis acid . It is also the most available soluble derivative of indium. [ 2 ]