19631-23-3

Downstream Products

• 700346-82-3 Ir4(CO)6(μ3-κ3-PPh2(o-C6H4)P(o-C6H4)PPh(η1-o-C6H4))(μ3-η2:η2:η2-C60) 
• 700346-80-1 Ir₄(CO)8(P(C₆H₅)2(C₆H₄)P(C₆H₅))(P(C₆H₅)2(C₆H₄)) 
• 700346-80-1 Ir4(CO)8(μ-κ2-PPh2(o-C6H4)PPh)(μ3-PPh2(η1:η2-o-C6H4)) 

Relevant academic research and scientific papers

Diolefin derivatives of tetrairidium dodecacarbonyl. Synthesis and crystal structures of Ir4(CO)9L(2,3-η:5,6-η-norbornadiene) (L = PMe2Ph, PPh3)

The reaction of Ir4(CO)11L (L = PMe2Ph, PMePh2, PPh3, AsPh3) with excess of diolefin (norbornadiene, 1,5-cyclooctadiene, cyclooctatetraene) and Me3NO in THF yielded Ir4(CO)9L(η4-diolefin) as well as the minor products Ir4(CO)7L(η4-diolefin)2. For most of these mixed-ligand cluster compounds, two stereoisomers were observed in solution by 31P and 1H NMR with L occupying either an axial or a radial site of a basal Ir atom. The solid-state structures of Ir4(CO)9(PMe 2Ph)(2,3-η:5,6-η-norbornadiene) (1) and Ir4(CO)9-(PPh3) (2,3-η:5,6-η-norbornadiene) (3) show that the diolefin chelates a basal Ir atom in both species while the PMe2Ph ligand in 1 is located on a radial site and the PPh3 ligand in 3 occupies an axial site. Crystal data for 1: space group P21/n, a = 9.947 (3) A?, b = 13.677 (2) A?, c = 20.951 (3) A?, β= 96.18 (2)°, Z = 4. Crystal data for 3: space group P21/n, a = 9.808 (2) A?, b = 33.682 (4) A?, c = 10.769 (2) A?, β= 103.12 (2)°, Z = 4.