Cyclic dialkylindium amides: new structural information and ultra-purification using inorganic and inorgano–organic layered materials

New data on some cyclic dimethyl- and diethylindium-amides were obtained. X-ray structure of pyrrolidinodimethylindium was determined. The molecule is centrosymmetric with square–planar In2N2 base and distorted tetrahedral metal environment similar to that of known dialkylindium amides, the cyclic amido-ligands are present in an envelope conformation. A novel material- and energy-saving procedure for sorption ultra-purification of highly sensitive organometallic compounds in absolute non-polar media was developed. Advanced inorganic and inorgano–organic crystalline layered materials possessing enhanced affinity towards selected ions or molecules were applied for the sorption treatment.