Heterocyclic dithiocarbamato-iron(iii) complexes: single-source precursors for aerosol-assisted chemical vapour deposition (AACVD) of iron sulfide thin films

Abstract

Tris-(piperidinedithiocarbamato)iron(III) (1) and tris-(tetrahydroquinolinedithiocarbamato)iron(iii) (2) complexes have been synthesized and their single-crystal X-ray structures were determined. Thermogravimetric analysis (TGA) of the complexes showed decomposition to iron sulfide. Both complexes were then used as single-source precursors for the deposition of iron sulfide thin films by aerosol-assisted chemical vapour deposition (AACVD). Energy-dispersive X-ray (EDX) spectroscopy confirmed the formation of iron sulfide films. The addition of tert-butyl thiol almost doubled the sulfur content in the deposited films. Scanning electron microscopy (SEM) images of the iron sulfide films from both complexes showed flakes/leaves/sheets, spherical granules and nanofibres. The sizes and shapes of these crystallites depended on the nature of the precursor, temperature, solvent and the amount of tert-butyl thiol used. The observed optical properties are dependent upon the variation of reaction parameters such as temperature and solvent. Powder X-ray diffraction (p-XRD) studies revealed that pyrrhotite, hexagonal (Fe0.975S), marcasite and smythite (Fe3S4) phases were differently deposited.

Electrocatalytic Oxidation of 4‐Aminophenol Molecules at the Surface of an FeS2/Carbon Nanotube Modified Glassy Carbon Electrode in Aqueous Medium

“…Conversely, carbonaceous material CNT is playing a vital role in developing chemically modified electrodes (CMEs) because of its large surface area and exclusive conducting properties . It is noted that NCs prepared by modifying CNT with FeS 2 particles have attracted a great deal of consideration as a catalytic material due to its chemical, structural, physical, and optical properties ,. The formation energy of oxygen vacancies and metal interstitials in FeS 2 NCs is very low and thus the defects are formed easily compared to other materials making the material suitable for catalyzing an electrochemical process .…”

“…[24][25][26][27][28][29][30][31][32][33][34] It is noted that NCs prepared by modifying CNT with FeS 2 particles have attracted a great deal of consideration as a catalytic material due to its chemical, structural, physical, and optical properties. [35,36] The formation energy of oxygen vacancies and metal interstitials in FeS 2 NCs is very low and thus the defects are formed easily compared to other materials making the material suitable for catalyzing an electrochemical process. [37][38][39][40][41] In the present study, FeS 2 -CNT NCs was synthesized and immobilized on a GCE to check the possibility of catalyzing the oxidation of 4-AP molecules such that p-quinone can be synthesized in the aqueous medium.…”

Combined Macro/Nanoscale Investigation of the Chemical Vapor Deposition of Fe from Fe(CO)5

“…[5] More recently, traditional [6] and new [7] iron dissociation of Fe(CO) 5 and its intermediates [18] or by computational methods such as ab initio studies. [19,20] These studies describe the gas phase sequential decarbonylations of the pentacarbonyl precursor and the recombination reactions of the intermediate carbonyls with CO.…”

Synthesis of nanostructured powders and thin films of iron sulfide from molecular precursors

“…[3][4][5] It has many potential advantages over other materials, including its low cost, high abundance, negligible toxicity and unique magnetic, electric and optical properties. [6][7][8][9] Iron sulde crystallises in many different phases; these include pyrite (cubic FeS 2 ), marcasite (orthorhombic FeS 2 ), mackinawite (Fe 1+x S), troilite (FeS), pyrrhotite (Fe 1Àx S), greigite (cubic spinel Fe 3 S 4 ) and smythite (Fe 3+x S 4 ). [10][11][12] The optical, magnetic and electrical properties of iron suldes vary according to the stoichiometric ratio between the iron and sulfur atoms.…”