Metal-Assisted Syntheses of Boranes and Carboranes
Abstract
Methods were developed for (i) the systematic preparation of organosubstituted derivatives of small carboranes, especially of the type nido- RRC2B4H6 where R is alkyl, aryl, or arylalkyl groups; (ii) oxidative fusion of these compounds to large R2C4B8H8 clusters via transition metal-promoted fusion; (iii) conversion of the nido-carboranes to stable (arene)metal(carborane) complexes incorporating first-, second-, or third-row transition series metals; (iv) stacking of the metal-carborane complexes to produce novel triple- and multi-decker sandwich complexes containing two or more metal centers; (v) synthesis of B-substituted carboranes and metallacarboranes via controlled regiospecific pathways; and (vi) studies of the chemical reactivity of the nido- carboranes and their derived metal complexes. The nonmetallated new carboranes are potentially useful in VHBR (very high burning rate) applications, while the metal sandwich complexes are precursors to high molecular weight polymers or solid state materials having novel electronic properties. Boranes; Carboranes; Metallacarboranes; Metal-arene complexes; Sandwich complexes; Multidecker complexes.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 30, 1989
- Accession Number
- ADA210728
Entities
People
- Russell N. Grimes
Organizations
- University of Virginia