Modification of aluminium alkoxides with dialkylmalonates

Modification of aluminium alkoxides with dialkylmalonates

ABSTRACT Depending on the reaction conditions, different aluminium dialkylmalonate derivatives were obtained by reaction of aluminium alkoxides Al(OR)3 (R = Et, iPr, tBu) with dialkylmalonates, viz. Al(malonate)3 (malonate = dimethyl, diethyl, di-iso-propyl and di-tert-butyl malonate), Al2(OiPr)4(malonate)2 (malonate = di-iso-propyl and di-tert-butyl malonate), Al2(OiPr)2(di-iso-propylmalonate)...

Halogen-containing tetrametallic aluminium alkoxides.

New halogen-containing tetrametallic aluminium alkoxides of formula [Al{(mu-OEt)2AlMeCl}3] ( 2-cis; 2-trans), and [Al{(mu-OEt)2AlBr2}3] ( 4), have been synthesized by combining Al(OEt)3 and Me2AlCl (for 2) or EtAlBr2 (for 4). They were fully characterized by (1H, 27Al) NMR, IR, mp, elemental analysis, and single-crystal X-ray diffractometry. The chloride analogue of 4, [Al{(mu-OEt)2AlCl2}3] ( 3...

Gellability zone for aluminium alkoxides

Ethyl acetoacetate modi®ed aluminium sec-butoxide can be hydrolysed and gelled with alkaline, neutral or acidic media within a pH range of 3.0±8.5. Alumina precipitation occurs if pH values at any point in the sol±gel transition are outside this range. Nine di€erent gelling agents have been evaluated for pH dependence of gel point. Based on stoichiometric considerations, only those systems with...

PIII for Aluminium Surface Modification

Modification of Zirconium and Hafnium Alkoxides the Effect of Molecular Structure on Derived Materials

A general introduction to the application of zirconia materials is provided in this chapter with a specific emphasis on the application in membrane and the use of zirconia as a high-k material. The main focus of this thesis is the preparation of suitable heteroleptic alkoxide precursors for the application in sol-gel and metalorganic chemical vapor deposition (MOCVD). Selecting suitable alkoxid...