Molecular structure of [In2(μ,η1-OR)(μ,η2-OR)(η2-OR)3(η1-OR)] R = C2H4NMe2, a pincer ligand

Functional indium [In(OR)3]m alkoxides (R = C2H4OMe, C2H4NMe2) have been obtained by alcoholysis of In[N(SiMe3)2]3 and characterised by elemental analysis, FT-IR and NMR spectroscopy. The 2-dimethylaminoethoxide was characterised by X-ray diffraction. It corresponds to the association of two InO6 octahedra giving the unsymmetrical dimer [In2(μ,η1-OR)(μ,η2-OR)(η2-OR)3(η1-OR)] (2). 2 was used as a pincer ligand toward Cu(acac)2.