Accession Number : ADA299521

Title :   Metallacarborane-Based Precursors for Electroactive Materials.

Descriptive Note : Final rept. 1 Jun 92-31 May 95,

Corporate Author : VIRGINIA UNIV CHARLOTTESVILLE

Personal Author(s) : Grimes, Russell N.

PDF Url : ADA299521

Report Date : 31 JUL 1995

Pagination or Media Count : 11

Abstract : This project was concerned with the design, preparation, and study of organometallic complexes containing transition metals, hydrocarbon rings, and boron-carbon (carborane) ligands, that can serve as precursors to new families of materials having useful electronic, magnetic, and/or optical properties. The work focused on three primary objectives: (1) design and synthesis of suitable metallacarborane building-block complexes; (2) development of methods for assembling large systems via linking, coupling, stacking, and fusion, and for chemically modifying the products; and (3) probing the electronic structures and properties of polymetallic species and developing correlations between properties and molecular structure. Efficient synthetic strategies were developed for preparing a variety of stacked and/or linked multisandwich and multidecker complexes, and for modifying these via introduction of functional groups at specified locations. In addition, the electronic and magnetic properties of a number of selected species were investigated in detail, with particular interest on electron-delocalization and communication between metal centers. jg p.2

Descriptors :   *METALS, *COMPOSITE MATERIALS, *LIGANDS, *CARBORANES, OPTICAL PROPERTIES, MAGNETIC PROPERTIES, TRANSITION METALS, STRATEGY, SYNTHESIS, STRUCTURAL PROPERTIES, PRECURSORS, ELECTROMAGNETIC PROPERTIES, ELECTRONIC EQUIPMENT, EFFICIENCY, ORGANOMETALLIC COMPOUNDS, CARBON, CORRELATION, HYDROCARBONS, MOLECULAR STRUCTURE, ASSEMBLY, RINGS, BORON.

Subject Categories : Inorganic Chemistry
      Physical Chemistry
      Laminates and Composite Materials
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE