Some complexes of Fe(II) with thiourea ligands

Bailey, R. A.; Peterson, T. R.

doi:10.1139/v67-191

Cited by 36 publications

(8 citation statements)

References 6 publications

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“…Bending mode, d(NCO) show a negative shift in complexes and appears around 610-645 cm )1 which further supports that -NCO group is N-bonded [30].…”

Section: (No)(l-l)] (Where L-l = Mbb and Pbb)supporting

confidence: 60%

Mixed ligand complexes of FeIII containing pseudohalides, nitrosyl and some mannich bases

Anand

2007

Transition Met Chem

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Reactions of Pentapseudohalonitrosyl ferrate(II) with Morpholinobenzyl benzamide(MBB) and Piperidinobenzyl benzamide(PBB) formed complexes of the type, [Fe(X) 3 (NO)(L-L)] where X = CN ) , NCO ) and N 3 ) and L-L = Morpholinobenzyl benzamide(MBB) and Piperidinobenzyl benzamide(PBB). These compounds have been characterized by various physico-chemical techniques such as elemental analysis, molar conductance, magnetic susceptibility measurements, i.r., electronic spectra, thermal gravimetric analysis. The molecular modeling Studies have been carried out for structural analysis for some of the complexes have been carried out using Hyperchem release 7.52 professional version.

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“…Bending mode, d(NCO) show a negative shift in complexes and appears around 610-645 cm )1 which further supports that -NCO group is N-bonded [30].…”

Section: (No)(l-l)] (Where L-l = Mbb and Pbb)supporting

confidence: 60%

Mixed ligand complexes of FeIII containing pseudohalides, nitrosyl and some mannich bases

Anand

2007

Transition Met Chem

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“…[48]. It should be noted that this explanation does not take into account the possible existence of mixed-ligand complexes, which may have very high stability constants [47] (for example, Fe(SC(NH2)2)2(SCN)2 is readily formed in solution [66]). As discussed in 3.2, the ACA sample used in this work had higher concentrations of potentially interfering leachable metals (Table 1).…”

Section: Dual-lixiviant Systemmentioning

confidence: 98%

An alternative to cyanide leaching of waste activated carbon ash for gold and silver recovery via synergistic dual-lixiviant treatment

Adams

Porter²,

Robshaw

et al. 2020

Journal of Industrial and Engineering Chemistry

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This study reports the development of a hydrometallurgical treatment for activated carbon ash (ACA); a waste product of the carbon-in-pulp (CIP) process used in the gold mining industry, rich in adsorbed precious metals. After an initial screening of known leaching chemistries, the research focusses on dual-lixiviant (thiourea and thiocyanate) and thiourea systems, both of which have lower environmental impact than traditional cyanide leaches. Comparing ferric sulfate and hydrogen peroxide as oxidants showed that a thiourea leach is more suited to ferric sulfate whereas the dual-lixiviant leach achieved greater extraction with hydrogen peroxide. The latter demonstrated faster kinetics and improved efficiency for dissolution of gold and silver. However, both leaches had issues with silver extraction due to formation of passivating layers on the surface of the silver nanoparticles. Kinetic modelling showed both systems tended towards a mixedcontrolled process. Gold extraction of 89%, with rapid kinetics using the dual-lixiviant process demonstrated that there is an alternative to cyanide leaches employed in gold recovery.

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“…Analytical grade N -ethylbutyl amine (98%), sodium thiocyanate (99%), copper(II) nitrate trihydrate (99.5%), tetrabutylammonium bromide (TBAB) (≥ 98%) and 3,5-dinitrobenzoyl chloride (≥98.0%) were purchased from Sigma-Aldrich. Analytical grade solvents such as tetrahydrofuran (THF), toluene, acetonitrile, n-hexane, dichloromethane, ethanol, methanol, chloroform, ethyl acetate and others were purchased from Sigma-Aldrich and Riedalde Haën and ethanol and acetone were dried using standard procedures 22 All the synthetic manipulations were carried out in air except for the thermolysis experimentations. The colloidal thermolysis experiments were carried out under N 2 inert atmosphere.…”

Section: Materials and Reagentsmentioning

confidence: 99%

Aerosol-assisted chemical vapor deposition of copper sulfide nanostructured thin film from newly synthesized single-source precursor

Saeed¹,

Rashid²,

Ahmad³

2013

Turk J Chem

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Abstract:The copper(II) complex of N -[ethyl(butyl)carbamothioyl]-3,5-dinitrobenzamide (1) has been synthesized and characterized by elemental analysis, IR spectroscopy, and atmospheric pressure chemical ionization-mass spectrometry.Thermogravimetric analysis shows that complex 2 decomposes in 2 steps to form copper sulfide. The complex was used as a single-source precursor for the deposition of copper sulfide thin film by aerosol-assisted chemical vapor deposition at 350• C. The powder X-ray diffraction pattern of thin film of the complex showed the deposition of monoclinic roxbyite Cu 7 S 4 and orthorhombic anilite Cu 7 S 4 phases at 350• C with spherical crystallites. The degree of film surface roughness was determined by atomic force microscopy. The scanning electron microscopy and energy dispersive X-ray analysis results showed the uniform distribution of copper sulfide in the film, which makes it a useful semiconducting material on a structured surface.

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Some complexes of Fe(II) with thiourea ligands

Cited by 36 publications

References 6 publications

Mixed ligand complexes of FeIII containing pseudohalides, nitrosyl and some mannich bases

Mixed ligand complexes of FeIII containing pseudohalides, nitrosyl and some mannich bases

An alternative to cyanide leaching of waste activated carbon ash for gold and silver recovery via synergistic dual-lixiviant treatment

Aerosol-assisted chemical vapor deposition of copper sulfide nanostructured thin film from newly synthesized single-source precursor

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