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Physical Properties of Agrochemicals
Published in John H. Montgomery, Thomas Roy Crompton, Environmental Chemicals Desk Reference, 2017
John H. Montgomery, Thomas Roy Crompton
Synonyms: Aafertis; Bercema Fertam 50; Carbamate; Dimethylcarbamodithioc acid iron complex; Dimethylcarbamodithioc acid iron(3+) salt; Dimethyldithiocarbamic acid iron salt; Dimethyldithiocarbamic acid iron(3+) salt; ENT 14689; Ferbam 50; Ferbame; Ferbam, iron salt; Ferbeck; Ferberk; Fermate; Fermate ferbam fungicide; Fermocide; Ferradow; Ferric dimethyldithiocarbamate; Fuklasin; Fuklasin ultra; Hexaferb; Hokmate; Iron flowable; Iron tris(dimethyldithiocarbamate); Karbam black; Trifungol; Tris(dimethylcarbamodithioato-S,S′)iron; Tris(dimethyldithiocarbamato)iron; Vancide FE95.
Tris(dithiocarbamato)iron(III) complexes as precursors for iron sulfide nanocrystals and iron sulfide-hydroxyethyl cellulose composites
Published in Journal of Sulfur Chemistry, 2019
Peter A. Ajibade, Athandwe M. Paca
Iron sulfide (FeS) has attracted tremendous research attention because of its natural abundance, non-toxicity and potentials for wide-ranging applications [1]. Iron sulfide clusters: [Fe2S2], [Fe3S4] and [Fe4S4] are found in many living organisms within proteins [2]. Iron sulfides (FeS) exist in nature in seven different crystalline phases depending on the Fe:S ratios which vary from 0.1 to 1.05 [3–5]. Attempts in recent years to prepare iron sulfide nanocrystals from dithiocarbamates complexes of iron have yielded iron sulfides nanocrystals with different morphologies, shapes and sizes depending mostly on the capping agents used and thermolysis temperatures [6–10]. Polymer composites are considered as multiphase materials consisting of nanoscale additives [11] and possess rare properties due to the combination of the inorganic compounds and the organic polymer [11]. Nanocomposites are materials that host nanocrystals within the matrix of organic polymers [12] and their properties are influenced by the size of its constituent’s inorganic semiconductor and the organic polymers [13]. Polymer-metal sulfide nanocomposites are interesting functional materials with large surface area and unsaturated atoms that interacts leading to improved properties of the nanocomposites [3]. Polymer-based nanocrystals are useful in drug delivery systems [4,5] and can also be used in combination therapy [5,6]. There are various methods used to prepare polymer-based inorganic nanocomposites, namely intercalation of nanocrystals [14], solution casting [15], melt intercalation [16], direct mixture of polymer and particles, template synthesis, polymerization and sol–gel process [11]. Polymers can be obtained from natural sources or they can be chemically synthesized [7]. Synthetic water-soluble polymers can dissolve or disperse in water, which makes them suitable for biological applications and their chains consist of hydrophilic groups [7]. The focus on the preparation of metal chalcogenide nanocrystals have been on the use of group 12 metal ions [9,10,17,18]. Even though they can be studied for their interesting and varied structural motifs, the toxicity of the metal ions limit their biomedical applications. Hence, there is need to explore other metal ion, such as iron. In this study, we report the synthesis and spectroscopic characterization of dimethyldithiocarbamate and imidazolyl dithiocarbamate and their iron(III) complexes. The complexes were thermolysed in oleic acid/octadecylamine (ODA) to prepared iron sulfide nanocrystals/HEC composites. The structural and optical properties of the iron sulfide nanocrystals and iron sulfide/HEC composites are discussed in this study.