Publication

Insights in the sol-gel processing of Pb(Mg1/3Nb2/3)O-3. The synthesis and crown structure of a new lead magnesium cluster: Pb6Mg12(mu-OAc)(6)( mu(2), eta(2)-OAc)(18)(mu(3), eta(2)-OC2H4OPri)(12)

Nava Setter, Zian Kighelman
2002
Journal Articles

Abstract

The synthesis and molecular structure of a Pb-Mg bimetallic acetatoalkoxide (Pb-6,Mg-12( mu-OAc)(6)(mu(2), eta(2)-OAc)(18)(mu(3), eta(2)-OC2H4OPr1)(12), space group R-3, a = b = 30.032(2), c = 18.855(2) Angstrom, alpha = beta = 90degrees, gamma = 120degrees) are discussed in this article. This compound was isolated as an intermediate during the elaboration of Pb(Mg1/3Nb2/3)O-3 (PMN) using sol-gel process. It results from the reaction of a bimetallic Mg/Nb species with lead acetate in 2-isopropoxyethanol. (C) 2002 Elsevier Science B.V. All rights reserved.

Official source

https://infoscience.epfl.ch/entities/publication/6d66d80b-4ec5-4421-83a4-7f6c7216c847

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Nava Setter, Zian Kighelman
2002
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/6d66d80b-4ec5-4421-83a4-7f6c7216c847

About this result

Related concepts (26)

Sol–gel process

In materials science, the sol–gel process is a method for producing solid materials from small molecules. The method is used for the fabrication of metal oxides, especially the oxides of silicon (Si) and titanium (Ti). The process involves conversion of monomers into a colloidal solution (sol) that acts as the precursor for an integrated network (or gel) of either discrete particles or network polymers. Typical precursors are metal alkoxides. Sol-gel process is used to produce ceramic nanoparticles.

Lead

Lead is a chemical element with the symbol Pb (from the Latin plumbum) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cut, lead is a shiny gray with a hint of blue. It tarnishes to a dull gray color when exposed to air. Lead has the highest atomic number of any stable element and three of its isotopes are endpoints of major nuclear decay chains of heavier elements.

Tantalum

Tantalum is a chemical element with the symbol Ta and atomic number 73. Previously known as tantalium, it is named after Tantalus, a figure in Greek mythology. Tantalum is a very hard, ductile, lustrous, blue-gray transition metal that is highly corrosion-resistant. It is part of the refractory metals group, which are widely used as components of strong high-melting-point alloys. It is a group 5 element, along with vanadium and niobium, and it always occurs in geologic sources together with the chemically similar niobium, mainly in the mineral groups tantalite, columbite and coltan.