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Title page for ETD etd-06052009-232204


Type of Document Dissertation
Author Crisp, Jeffrey Allen
URN etd-06052009-232204
Title Spin state isomerism and molecular magnetism from site-specifically substituted bis(indenyl) transition metal complexes
Degree PhD
Department Chemistry
Advisory Committee
Advisor Name Title
Timothy P. Hanusa Committee Chair
Bridget Rogers Committee Member
Charles M. Lukehart Committee Member
David Wright Committee Member
Eva Harth Committee Member
Keywords
  • spin state
  • molecular magnetism
  • bis(indenyl)manganese
  • bis(indenyl)chromium
  • bis(indenyl)iron
  • bis(indenyl)vanadium
Date of Defense 2009-05-12
Availability unrestricted
Abstract
This work focuses on bis(indenyl) complexes of vanadium, chromium, manganese and iron. Specifically, spin-state manipulations of the complexes were attempted by the variation of ligand substituents in number, type, and position on the indenyl rings. The spin states of the resulting organometallic species were probed via magnetic susceptibility measurements in solution and in the solid state. Characterization of these complexes in the solid state by x-ray crystallography was essential to the determination of their preference for a specific rotational conformation. In certain cases the rotational conformation of the rings, and consequently the molecule’s symmetry, was directed by sterically bulky substituents. Studies of the molecules’ reactivity with small molecular gases (e.g., N2, H2, CO, C2H4, and NO) were investigated as functions of the symmetry, spin-state, and metal center.
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