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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 ...
[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]
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 .
Hydrated iridium trichloride, a common salt of iridium. The coordination complexes of iridium are extensive. Iridium in its complexes is always low-spin. Ir(III) and Ir(IV) generally form octahedral complexes. [2] Polyhydride complexes are known for the +5 and +3 oxidation states. [11] One example is IrH 5 (P i Pr 3) 2. [12] The ternary hydride ...
Applications include their use as NMR "shift reagents" and as catalysts for organic synthesis, and precursors to industrial hydroformylation catalysts. C 5 H 7 O − 2 in some cases also binds to metals through the central carbon atom; this bonding mode is more common for the third-row transition metals such as platinum(II) and iridium(III).
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 .
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A typical example of this category viz. novel hexacoordinated orthometalated rhodium(III) thiolato complex trans-[Rh(C ∧ N ∧ S)Cl(PPh 3) 2] was synthesized from benzyl 2-(phenylazo)phenyl thioether and RhCl 3 ·3H 2 O in the presence of excess PPh 3 via in situ C(sp 2)−H and C(sp 3)−S bond scissions. This is the first example for a ...