%0 Journal Article %A Fornalczyk, Gregor %A Valldor, Martin %A Mathur, Sanjay %D 2014 %T Monomeric Iron Heteroarylalkenolates: Structural Design Concepts and Investigations on Their Application in Chemical Vapor Deposition %U https://acs.figshare.com/articles/journal_contribution/Monomeric_Iron_Heteroarylalkenolates_Structural_Design_Concepts_and_Investigations_on_Their_Application_in_Chemical_Vapor_Deposition/2310082 %R 10.1021/cg401930n.s002 %2 https://ndownloader.figshare.com/files/3947710 %K metal chelator %K FeIII precursor %K iron oxide layers %K Monomeric Iron Heteroarylalkenolates %K 10 K %K iron atoms %K nonmagnetic ground state %K Structural Design Concepts %K DMTTFP %K Al 2O substrate %K Chemical Vapor DepositionAryl %K chemical vapor deposition %K Magnetic investigations %K FeIII centers %K monomeric precursors %K decomposition behavior %X 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 FeII and FeIII centers. [Fe­(DMTTFP)2] (1) and [Fe­(DMTTFP)2­(OBut)] (2) 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 1 and 2, respectively. Magnetic investigations confirmed [Fe­(DMTTFP)2] 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. [Fe­(DMTTFP)2­(OBut)] exhibited enhanced stability, sufficient volatility, and decomposition behavior serving as an efficient FeIII precursor for the growth of iron oxide layers on an Al2O3 substrate via chemical vapor deposition. %I ACS Publications