Phase separation of methylalumoxane with diethyl ether

After the addition of diethylether to a solution of methylalumoxane in toluene, phase separation can be observed. The investigation of several phase separation experiments led to an idea of the possible composition of methylalumoxane that could be consisting of a basic element and differently associated trimethylaluminium. Investigations of the system methylalumoxane–diethylether–trimethylaluminium show that diethylether is stronger complexed at methylalumoxane than with trimethylaluminium. A second model of the structure of methylalumoxane allows an attempt to explain the phenomenum of phase separation.