Abstract
The structure of Ir(CO)2(acac) is determined by XRD at room temperature. Crystallographic data for C7H7IrO4 are: a = 6.4798(5) A, b = 7.7288(5) A, c = 9.1629(10) A, α = 105.738(2)°, β = 90.467(3)°, γ = 100.658(2)°, space group 1, P $$ \bar 1 $$ , V= 433.24(6) A3, Z = 2, d calc = 2.662 g/cm3, R = 0.0167. The structure is built of isolated mononuclear molecules. The central iridium atom has a square coordination environment formed by two oxygen atoms that belong to the acetylacetonate ligand and two carbon atoms of carbonyl groups. The average Ir-O and Ir-C bond lengths are 2.045(3) A and 1.832(6) A respectively. Molecules are stacked in such a way that the planes of coordination squares turn out to be parallel to the Ir...Ir distances between the nearest neighbors in the stack of 3.242 A and 3.260 A.
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