Transformation Of Organometallics Into Common And Exotic Materials: Design And Activation (nato Science Series E:)

The design, -synthesis, and selective pyrolytic conversion of organo­ metallic precursdrs to materials of high purity or specific morphology (for electronic or optical applications), high strength and/or high-temperature stability (for structural or refractory applications) represents a poten­ tial area of extreme growth at the overlap of chemistry and materials science (materials chemistry). Research in this area is likely to have considerable impact at both the academic and societal levels because it will require development of scientific expertise in areas currently not well understood. Examples include: (1) The thermodynamics of molecular rearrangements in organometallic molecules at temperatures above 200°C; (2) The electronic properties of amorphous ceramic materials; (3) The phys­ icochemical properties of ceramic molecular composites; and (4) The optical properties of multicomponent glasses made by sol-gel processing. The opportunity to establish the scientific principles needed to pursue useful research goals in "materials chemistry" requires communica­ tion between chemists, ceramists, metallurgists, and physicists. To date, there have been few opportunities to create an environment where such communication might occur. The objective of this NATO Advanced Research Workshop was to promote discussions between experts in the varibus disci­ plines aligned with "materials chemistry. " These discussions were intended to identify the scope and potential rewards of research efforts in the development of: Custom-designed precursors to common and exotic materials, methods of selectively transforming these precursors in high yield to the desired material, and methods of characterizing the final products. Front Matter....Pages I-XVIII Front Matter....Pages 1-1 Towards a Common Theoretical Language for Molecular and Solid State Chemistry....Pages 3-7 Kinetics and Thermodynamics of Gas Phase Pyrolysis of Organometallics....Pages 8-20 The Pyrolytic Transformation of Organometallic Compounds into Refractory Metals: Tungsten and Molybdenum Carbides....Pages 21-31 Refractory Hardmetals — Industrial Relevance....Pages 32-48 Use of Ammonolytic Intermediates for the Synthesis of Nitrides and Carbonitrides....Pages 49-55 Cluster Derived Metal Particles in Catalysis. Hydrogenation, Isomerization and Dehydration Reactions on (η 5 -C 5 H 5 )NiM 3 (μ-H) 3 (CO) 9 (M = Ru, Os). Effect of the Metal Stoichiometry in Homogeneous and Heterogeneous Reactions and Synergistic Behaviour of the Support.....Pages 56-75 Organometallic Polymers from Metal 2,3-Dihydro-1,3-diborol Complexes....Pages 76-85 Front Matter....Pages 87-87 Ceramics Via Polymer Pyrolysis: (1) General Principles and (2) The Crystal and Molecular Structure of μ-IMIDO-BIS-[BIS (Trimethylsilylamino) (Trimethylsilylamino)] Borane....Pages 89-96 Organosilicon Precursors to Silicon Carbide for Electronic and Ceramic Applications....Pages 97-102 Catalyzed Dehydrogenative Coupling as a Route to Novel Organometallic Polymers.....Pages 103-115 New Polycarbosilane Models: Preparation and Characterization of a Poly (Methylchloro) Silmethylene....Pages 116-132 Organosilicon Polymers as Precursors for Silicon-Containing Ceramics....Pages 133-154 Front Matter....Pages 155-155 Chemical Vapor Deposition of Fe-Co Thin Films from Fe-Co Organometallic Clusters....Pages 157-164 How to Make Metal Silicide Thin Films from Molecular Silicon-Metal Compounds — And How Not To....Pages 165-177 Chemical Vapor Deposition of Boron Nitride Using Organo-Metallic Adducts....Pages 178-184 Organometallic Compounds for III-V Devices....Pages 185-194 III-V MOCVD Growth Using Adducts as Single Starting Materials....Pages 195-198 Organometallic Growth of RuS 2 ....Pages 199-203 Front Matter....Pages 205-205 Better Ceramics Through Chemistry....Pages 207-235 Technical Conversion of Alkoxides to Oxides, Yesterday, Today and Tomorrow—illustrated by examples taken from the sol-gel dip coatings on glass....Pages 236-249 Front Matter....Pages 205-205 Sol-Gel Processing of Transition Metal Oxides....Pages 250-254 The Sol-Gel Process: Present and Future....Pages 255-260 Sol-Gel Derived Thin Films: Critical Issues....Pages 261-278 Organometallic Compounds as Starting Materials for the Preparation of Uniform Finely Dispersed Powders....Pages 279-288 The design, -synthesis, and selective pyrolytic conversion of organoƯ metallic precursdrs to materials of high purity or specific morphology (for electronic or optical applications), high strength and/or high-temperature stability (for structural or refractory applications) represents a potenƯ tial area of extreme growth at the overlap of chemistry and materials science (materials chemistry). Research in this area is likely to have considerable impact at both the academic and societal levels because it will require development of scientific expertise in areas currently not well understood. Examples include: (1) The thermodynamics of molecular rearrangements in organometallic molecules at temperatures above 200°C; (2) The electronic properties of amorphous ceramic materials; (3) The physƯ icochemical properties of ceramic molecular composites; and (4) The optical properties of multicomponent glasses made by sol-gel processing. The opportunity to establish the scientific principles needed to pursue useful research goals in "materials chemistry" requires communicaƯ tion between chemists, ceramists, metallurgists, and physicists. To date, there have been few opportunities to create an environment where such communication might occur. The objective of this NATO Advanced Research Workshop was to promote discussions between experts in the varibus disciƯ plines aligned with "materials chemistry." These discussions were intended to identify the scope and potential rewards of research efforts in the development of: Custom-designed precursors to common and exotic materials, methods of selectively transforming these precursors in high yield to the desired material, and methods of characterizing the final products Proceedings of the NATO Advanced Research Workshop on The Design, Activation, and Transformation of Organometallics into Common and Exotic Materials, Cap D'Agde, France, September 1-5, 1986