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Organoiridium compounds share many characteristics with those of rhodium, but less so with cobalt. Iridium can exist in oxidation states of -III to +V, but iridium(I) and iridium(III) are the more common. iridium(I) compounds (d 8 configuration) usually occur with square planar or trigonal bipyramidal geometries, whereas iridium(III) compounds (d 6 configuration) typically have an octahedral ...
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.
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.
Trimesityliridium is a pyramidal iridium(III) complex that crystallizes as a red-brown solid with the formula Ir(C 9 H 11) 3. [1] It is most often used as an oxygen atom transfer catalyst in concert with oxotrimesityliridium, the product it forms readily when exposed to O 2 .
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 .
[1]: 293–307 The process is based on an iridium-containing catalyst, such as the complex [Ir(CO) 2 I 2] − (1). The Cativa and Monsanto processes are sufficiently similar that they can use the same chemical plant. Initial studies by Monsanto had shown iridium to be less active than rhodium for the carbonylation of methanol. [2]
The term agromineral was created in the 19th century and is now one of the leading research topics for sustainable agriculture. These geomaterials are used to replenish the nutrients and amend soils. Agrominerals started with small uses most often seen in hobbyist gardening but are moving to a much larger scale such as commercial farming ...
Crabtree's catalyst is an organoiridium compound with the formula [C 8 H 12 IrP(C 6 H 11) 3 C 5 H 5 N]PF 6.It is a homogeneous catalyst for hydrogenation and hydrogen-transfer reactions, developed by Robert H. Crabtree.