Assessment of Iron-Based Spin-Orbit Coupling Effects in Pt-Fe Heterobimetallic Lantern Complexes via Fe Mössbauer Spectroscopy.

A series of heterobimetallic lantern complexes, [PtFe(SOCR)(pyX)] where R = Me, X = H (), X = NH (), X = SMe (); R = Ph, X = H (), X = NH (), X = SMe (), have been prepared and characterized spectroscopically. Compounds , , and are reported herein for the first time. The high-spin iron(II) sites of - have been investigated using Fe Mössbauer spectroscopy.

Spectroscopic and Theoretical Investigation of High-Spin Square-Planar and Trigonal Fe(II) Complexes Supported by Fluorinated Alkoxides.

The electronic structures and spectroscopic behavior of three high-spin Fe complexes of fluorinated alkoxides were studied: square-planar {K(DME)}[Fe(pin)] () and quasi square-planar {K(222)}[Fe(pin)] () and trigonal-planar {K(18C6)}[Fe(OCF)] () where pin = perfluoropinacolate and OCF = -perfluoro--butoxide. The zero-field splitting (ZFS) and hyperfine structure parameters of the = 2 ground states were determined using field-dependent Fe Mössbauer and high-field and -frequency electron paramagnetic resonance (HFEPR) spectroscopies. The spin Hamiltonian parameters were analyzed with crystal field theory and corroborated by density functional theory (DFT) and complete active space self-consistent field (CASSCF) calculations.

HAA by the first {Mn(iii)OH} complex with all O-donor ligands.

There is considerable interest in MnOH moieties, particularly in the stepwise changes in those O-H bonds in tandem with Mn oxidation state changes. The reactivity of aquo-derived ligands, {MOH}, is also heavily influenced by the electronic character of the other ligands. Despite the prevalence of oxygen coordination in biological systems, preparation of mononuclear Mn complexes of this type with all O-donors is rare.

Effect of lattice mismatch on film morphology of the quasi-one dimensional conductor KMoO.

High quality epitaxial thin films of the quasi-one dimensional conductor KMoO have been successfully grown on SrTiO(100), SrTiO(110), and SrTiO(510) substrates pulsed laser deposition. Scanning electron microscopy revealed quasi-one dimensional rod-shaped structures parallel to the substrate surface, and the crystal structure was verified by using X-ray diffraction. The temperature dependence of the resistivity for the KMoO thin films demonstrates a metal-to-semiconductor transition at about 180 K.