1 research outputs found
Monomeric Iron Heteroarylalkenolates: Structural Design Concepts and Investigations on Their Application in Chemical Vapor Deposition
Aryl
substituted β-alkenol 1-(dimethyl-1,3-thiazol-2-yl)-3,3,3-trifluoropropenol
(DMTTFP) was employed as an efficient metal chelator to obtain volatile
monomeric precursors containing Fe<sup>II</sup> and Fe<sup>III</sup> centers. [FeÂ(DMTTFP)<sub>2</sub>] (<b>1</b>) and [FeÂ(DMTTFP)<sub>2</sub>Â(OBu<sup><i>t</i></sup>)] (<b>2</b>)
were synthesized by reacting suitable starting materials with DMTTFP.
The molecular structures were elucidated by single-crystal X-ray diffraction
analyses, which revealed a distorted tetrahedral and a trigonal-bipyramidal
arrangement of ligands around iron atoms in <b>1</b> and <b>2</b>, respectively. Magnetic investigations confirmed [FeÂ(DMTTFP)<sub>2</sub>] to exhibit a thermally populated spin-state transition that
becomes apparent below 10 K. The high-spin state was gradually transferred
to a low-spin state on cooling, suggesting a nonmagnetic ground state.
[FeÂ(DMTTFP)<sub>2</sub>Â(OBu<sup><i>t</i></sup>)] exhibited enhanced stability, sufficient volatility, and decomposition
behavior serving as an efficient Fe<sup>III</sup> precursor for the
growth of iron oxide layers on an Al<sub>2</sub>O<sub>3</sub> substrate
via chemical vapor deposition