Pyridylcyanoximes and Their Metal Complexes
Date of Graduation
Master of Science in Chemistry
Chemistry and Biochemistry
The synthesis of phosphoryl and boron-capped cyanoximates tripod was attempted, but positive results were not obtained, possibly because the electrowithdrawing effect of the cyano group in the oxime diminishes the nucleophilicity of the ligand. This conclusion was supported by the synthesis of boron-capped pyridyloximate tripod using 2-pyridyl-ethanone oxime as ligand and phenyl boronix as capping agent. 2-,3-, and 4-Pyridylcyanoximes, H(2PCO), H(3PCO), H(4PCO), were synthesized through Meyer reaction and characterized by spectroscopic techniques. In addition, the crystal structures of H(3PCO) and H(4PCO) were obtained. Both cases present trans-anti configuration in solid state. Conventional coordination compounds of monovalent Na(I), Ag(1), Tl (I) and bivalent Fe(II), Ni(II), Cu(II),and Co(II) were prepared using[2PCO]⁻, [3PCO]⁻, [4PCO]⁻ cyanoximates. Results indicated that [2PCO]⁻ behaves as chelate agent with transition metals, while [3PCO]⁻ and [4PCO]⁻ behave as bridged agents which connect metals. Crystal structures of the mer-isomer of PPh₄[Fe(2PCO) ₃]x2H₂O, trans-anti TI(3PCO) and TI(4PCO) were also determined.
tripods, pyridyloximes, cyanoximes, boron compounds, coordination chemistry of T1 (I), Cu (II), Fe (II), Ni (II), and Co(II)
© Daniela Marcano
Marcano, Daniela, "Pyridylcyanoximes and Their Metal Complexes" (2007). MSU Graduate Theses. 2267.