The Hartree-Fock method has been employed to investigate the electronic structures of EMIM+(1-ethyl-3-methyl-imidazolium+), CuCl−2, Cu2Cl−3, CuCl2−, EMIM+-CuCl−2, EMIM+-Cu2Cl−3, and EMIM+-CuCl2−3 pairs. Full optimization and frequency analyses of EMIM+, CuCl−2, Cu2Cl−3, CuCl2−3, eight initial EM...
The city of Malgara in the municipality of Aksios, in northern Greece, relies on local groundwater for the municipal water supply. The groundwater has pH 7.9 and contains elevated concentrations of arsenic (20 µg/L), phosphate (550 µg/L), manganese (235 µg/L) and ammonium (1.2 mg/L), whereas ...
Ammonium and manganese may cause the aesthetic deterioration of drinking water quality if their penetration into the water intake is not controlled. The current physical chemical methods may be unable to treat polluted raw water alone, so a biological method is used to bolster the current physic...
An iron–manganese co-oxide filter film (MeOx) coated on filter sand has been shown be a good catalyst for the oxidation of ammonium in the treatment of groundwater. However, its catalytic activity decreases gradually when it is used to remove ammonium from surface water. In this study, phosphat...
The complex trans-[Rh(CO)X(PEt3)2] (1) (X = Br, I) reacts with PH3BY3 (Y = Cl, Br) in dichloromethane at 183 K to give [Rh(CO)XH(PH2BY3)(PEt3)2] (2). When X = NCS, Y = Br, [Rh(CO)H(PH2BBr3)2(PEt3)2] results. When X = Y = Cl, only known, PH3-containing species result, no -PH2BY3 groups are formed...
Dihalobridged binuclear complexes [Rh(diolefin)(μ-X)]2 {diolefin = 1,5-cyclooctadiene (cod), X = Cl or Br; diolefin = norbornadiene (nbd), X = Cl}, undergo halide bridge cleavage reactions with multidentate N,N-heterocycles 1,3,5-tris(benzimidazolyl)benzene (L1H3), 1,3,5-tris(N-methylbenzimidaz...
Complexes of rhodium and iridium of the types MX3L, MX(CO)2L and MX3(CO)L (X = halide) containing multidentate N-heterocycles (L),2,6-bis(benzimidazolyl)pyridine(bBzlH2py) and 2,6-bis(N-methyl-benzimidazolyl)pyridine (bBzlMe2py) have been prepared and characterized by IR, electronic and 1H and 1...
A short, regiospecific route to pterosin Z and calomelanolactone is presented in which the key step is a rhodium catalysed intramolecular cycloaddition.
Publisher SummaryThis chapter discusses the history, abundance, distribution, and production of cobalt, rhodium, and iridium. Rhodium and iridium are rare elements, comprising only 0.0001 ppm and 0.001 ppm of the earth's crust, respectively. Cobalt is widely distributed in the earth's ...
Treatment of rhodium(III) halides with the N-heterocycles (LH), 1,3-bis(benzimidazolyl)benzene (bBzlH2bzH; Ia) and its N-methyl derivative (bBzlMe2bzH; Ib) in methanol gave halobridged binuclear cyclometallated products of the composition [RhX2L]2 (X=Cl, Br or I). The chloro complex undergoes ha...
Allylic alcohols 3–18 and 36 were efficiently isomerized to corresponding saturated carbonyls 19–34 and 37 in excellent yields under mild reaction conditions (5–9 min, 0 °C) using PBr3.
The influence of substituents on the resonance Raman spectra of bis(p-substituted dithiobenzil)nickels has been examined. The assigned sulfur—nickel stretching vibrations in the complexes appeared in the range 390–410 cm−1 with a shift to higher frequency being observed for the electron-donati...
A new unsymmetric substituted bis(dithiobenzil)nickel complex containing two phenyl groups and two substituted phenyl groups was synthesized from a benzoin compound using phosphorus pentasulfide chloride. The benzoin compounds were prepared from phenylglyoxyal and substituted benzenes. The nicke...
Structure-property relationships in a series of thermoset organotin polymers have been investigated. The tri-n-butyltin esters of glycine, 4-aminobutanoic, 6-aminohexanoic, and 11-aminoundecanoic acids were synthesized and reacted with diepoxides to prepare prepolymers carrying epoxide end group...
Metals can, when present in excess, or under wrong conditions, and in the wrong places, produce errors in the genetic information system. The present review is limited to three examples of heavy metal genotoxicants, namely arsenic (As), lead (Pb) and mercury (Hg) on plant systems. Exposure to le...
We describe a complete account of our total synthesis and biological evaluation of (−)-berkelic acid and analogs. We delineate a synthetic strategy inspired by a potentially biomimetic union between the natural products spicifernin and pulvilloric acid. After defining optimal parameters, we exec...
In this study, composite antibacterial microcapsules combining of two antibacterial agents: chlorhexidine acetate and silver nanoparticle were prepared. The chlorhexidine acetate was encapsulated inside of the microcapsules and nano-sized silver particles were modified on the surface of microcap...
This work explores the unique antibiofilm activity of pentasilver hexaoxoiodate (Ag5IO6). To test this activity, wound dressings were impregnated with Ag5IO6 and compared with various commercially available silver-containing dressings, as well as dressings containing chlorhexidine, iodine and po...
The electrochemical oxidation of iodide on a silver electrode in 0.1 M NaOH and 5.0 × 10−4M iodide aqueous solution was monitored by in situ Raman spectroscopy. The chemical oxidation of iodide by AgO has been confirmed by in situ and ex situ Raman spectroscopy. The surface Raman spectra of a s...
The comprehensive study of various chemiluminescence systems (luminol, lucigenin, KMnO4, Mn(IV), Ce(IV) and K3Fe(CN)6) in terms of their applicability to the detection of silver nanoparticles (AgNPs) has been carried out for the first time. Among the fourteen systems tested, Mn(IV)-formaldehyde-...
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