Relevant bibliographies by topics / Mn(II)

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Mn(II)'

Author: Grafiati
Published: 4 June 2021
Last updated: 7 February 2022

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Journal articles on the topic "Mn(II)"

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Uhrecký, Róbert, Ján Moncoľ, Marian Koman, Ján Titiš, and Roman Boča. "Structure and magnetism of a Mn(iii)–Mn(ii)–Mn(ii)–Mn(iii) chain complex." Dalton Transactions 42, no. 26 (2013): 9490. http://dx.doi.org/10.1039/c3dt50940k.

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Besio, Roberta, Maria Camilla Baratto, Roberta Gioia, Enrico Monzani, Stefania Nicolis, Lucia Cucca, Antonella Profumo, et al. "A Mn(II)–Mn(II) center in human prolidase." Biochimica et Biophysica Acta (BBA) - Proteins and Proteomics 1834, no. 1 (January 2013): 197–204. http://dx.doi.org/10.1016/j.bbapap.2012.09.008.

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Anderson, Kirsty M., Neil G. Connelly, Nicholas J. Goodwin, Gareth R. Lewis, Maria Teresa Moreno, A. Guy Orpen, and Andrew J. Wood. "Cyanide-bridged complexes with Sn(II)Mn(I), Sn(II)Mn(II), Sn(IV)Mn(I) and Sn(IV)Mn(II) oxidation states †." Journal of the Chemical Society, Dalton Transactions, no. 9 (2001): 1421–27. http://dx.doi.org/10.1039/b100721l.

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Mikuriya, Masahiro, Toshinori Fujii, Tadashi Tokii, and Asako Kawamori. "Synthesis and Characterization of Mononuclear (Mn(II) and Mn(III)) and Dinuclear (Mn(II)Mn(II) and Mn(II)Mn(III)) Complexes with 2,6-Bis[N-(2-pyridylethyl)iminomethyl]-4-methylphenol." Bulletin of the Chemical Society of Japan 66, no. 6 (June 1993): 1675–86. http://dx.doi.org/10.1246/bcsj.66.1675.

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Chang, Jianing, Yukinori Tani, Hirotaka Naitou, Naoyuki Miyata, and Haruhiko Seyama. "Fungal Mn oxides supporting Mn(II) oxidase activity as effective Mn(II) sequestering materials." Environmental Technology 34, no. 19 (October 2013): 2781–87. http://dx.doi.org/10.1080/09593330.2013.790066.

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Grinenko, V. V., M. N. Khrizanforov, S. O. Strekalova, V. V. Khrizanforova, K. V. Kholin, T. V. Gryaznova, and Y. H. Budnikova. "Electrooxidative phosphorylation of coumarins by bimetallic catalytic systems Ni(II)/Mn(II) or Co(II)/Mn(II)." Phosphorus, Sulfur, and Silicon and the Related Elements 191, no. 11-12 (August 23, 2016): 1660–61. http://dx.doi.org/10.1080/10426507.2016.1225062.

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Stamatatos, Theocharis C., and George Christou. "Mixed valency in polynuclear Mn II /Mn III , Mn III /Mn IV and Mn II /Mn III /Mn IV clusters: a foundation for high-spin molecules and single-molecule magnets." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 366, no. 1862 (September 7, 2007): 113–25. http://dx.doi.org/10.1098/rsta.2007.2144.

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Mixed-valent Mn/O dinuclear and polynuclear molecular compounds containing Mn III are almost without exception trapped valence. Large differences between the strengths of the exchange interactions within Mn II Mn III , Mn III Mn III and Mn III Mn IV pairs lead to situations where Mn III Mn IV interactions, the strongest of the three mentioned and antiferromagnetic in nature, dominate the intramolecular spin alignments in trinuclear and higher nuclearity mixed-valent complexes and often result in molecules that have large, and sometimes abnormally large, values of molecular spin ( S ). When coupled to a large molecular magnetoanisotropy of the easy-axis-type (negative zero-field splitting parameter, D ), also primarily resulting from individual Jahn–Teller distorted Mn III centres, such molecules will function as single-molecule magnets (molecular nanomagnets). Dissection of the structures and exchange interactions within a variety of mixed-valent Mn x cluster molecules with metal nuclearities of Mn 4 , Mn 12 and Mn 25 allows a ready rationalization of the observed S , D and overall magnetic properties in terms of competing antiferromagnetic exchange interactions within triangular subunits, resulting spin alignments and relative orientation of Mn III JT axes. Such an understanding has provided a stepping stone to the identification of a ‘magnetically soft’ Mn 25 cluster whose groundstate spin S value can be significantly altered by relatively minor structural perturbations. Such ‘spin tweaking’ has allowed this cluster to be obtained in three different forms with three different groundstate S values.
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Dangeti, Sandeepraja, Babak Roshani, Brian Rindall, Joyce M. McBeth, and Wonjae Chang. "Biofiltration field study for cold Fe(II)- and Mn(II)-rich groundwater: accelerated Mn(II) removal kinetics and cold-adapted Mn(II)-oxidizing microbial populations." Water Quality Research Journal 52, no. 4 (October 10, 2017): 229–42. http://dx.doi.org/10.2166/wqrj.2017.006.

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Abstract Removal of Mn(II) from Fe(II)- and Mn(II)-rich groundwater in cold regions is challenging, due to slow Mn(II) removal kinetics below 15 °C. This study demonstrated onset, acclimation, and acceleration of Mn(II) removal in a two-stage pilot-scale biofilter (Fe and Mn filters) at varying low on-site temperatures (8–14.8 °C). Mn(II) removal commenced at 8 °C in the Mn filter after Fe(II) removal. A shift in redox-pH conditions favored biological Mn(II) removal and Mn(II)-oxidizing bacteria increased. The Mn filter reached steady-state functioning after 97 days, exhibiting high removal efficiencies (97 ± 0.9%). Yet, first-order rate constants (k) for Mn(II) removal were low (10−6–10−5 min−1; t1/2 = ∼40 d). After consecutive backwashes and filter inoculation with backwashed sludge, k remarkably accelerated to 0.21 min−1 (t1/2 = 3.31 min at 11 ± 0.6 °C). The cold-adapted microbial consortium (51 genera), including Pseudomonas, Leptothrix, Flavobacterium, and Zoogloea, cultured from the field-aged biofilter rapidly produced biogenic Mn oxides at 8 °C, confirmed by electron paramagnetic resonance spectroscopy. Birnessite and pyrolusite detected by synchrotron-based powder X-ray diffraction, and a repetitive birnessite-like surface morphology on ripened filter materials, reflected autocatalytic oxidation. Shifting in k indicated the vertical progress of biofilter ripening, which was not limited by low temperature.
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Trojan, Miroslav, and Petra Šulcová. "Binary Cu(II)–Mn(II) cyclo-tetraphosphates." Dyes and Pigments 47, no. 3 (December 2000): 291–94. http://dx.doi.org/10.1016/s0143-7208(00)00086-3.

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García, A. Bernalte, M. A. Díaz Díez, F. J. García Barros, F. J. Higes Rolando, E. Sabio Rey, and C. Valenzuela Calahorro. "Systems Mn(II)/HGA and Mn(II)/BnGA: Isolation and characterization of solids." Journal of Inorganic Biochemistry 59, no. 2-3 (August 1995): 629. http://dx.doi.org/10.1016/0162-0134(95)97720-b.

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Dissertations / Theses on the topic "Mn(II)"

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Harron, Eilis Antonia. "Imido and amido compounds of Sn(II) and Mn(II)." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.619780.

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Maciel, Jhonny Willians de Oliveira. "Complexos de Fe(II), Mn(II), Cu(II) e Zn(II) derivados de um ligante do tipo oxamato funcionalizado: síntese e caracterização." Universidade Federal de Goiás, 2018. http://repositorio.bc.ufg.br/tede/handle/tede/9038.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
New supramolecular systems based on metal complexes of formula [Fe(H2pcpa)2(H2O)2] (3), [Mn(Hpcpa)(H2O)3]n•1/2H2O (4), [Zn(Hpcpa)(H2O)3]n•1/2H2O (5) and [Cu2(Hpcpa)2(bipy)2]•5,6H2O (6) [H2pcpa- and Hpcpa2- ion derivative of EtH2pcpa (1) = N-(4-carboxyphenyl)oxamic ethyl ester] have been synthesized and describe in this work. The structure of 3 consists of discrete Fe(II) units, each metal ion is six-coordinate in a distorted octahedral environment with four oxamate-oxygens from a H2pcpa- ligand in the basal plane and two water molecules in the apical position. 4 and 5 is a neutral zigzag chain of Mn(II) and Zn(II) ions, respectively, bridged by Hpcpa2- ligands exhibiting the bidentate/monodentate coordination mode. Each metal ion is building a somewhat distorted octahedral surrounding. The distance between metals ions intrachain is 11.456 Å (4) and 11.325 Å (5). Complex 6 consists of a dimer in which the Cu(II) ions is found in a square-shaped pyramidal geometry connected by two Hpcpa2- and the 2,2'-bipyridine as a terminal ligand.
Foram obtidos novos sistemas supramoleculares baseados em compostos de coordenação com o ligante ácido N-(4-carboxifenil) oxâmico etil éster (EtH2pcpa/1) e os metais Fe(II), Mn(II), Cu(II) e Zn(II). As sínteses, caracterizações espectroscópicas e elucidação das estruturas cristalinas de quatro compostos inéditos de fórmula [Fe(H2pcpa)2(H2O)2] (3), [Mn(Hpcpa)(H2O)3]n•1/2H2O (4), [Zn(Hpcpa)(H2O)3]n•1/2H2O (5) e [Cu2(Hpcpa)2(bipy)2]•5,6H2O (6) foram descritas nesse trabalho. O complexo 3 formou monocristais de cor laranja amarronzada, cuja a estrutura consiste em um monômero de Fe(II). Cada íon de Fe(II) é hexacoordenado com esfera de coordenação composta de duas moléculas de água posicionadas em trans e quatro oxigênios-oxamato de dois ligante H2pcpa-. Os compostos 4 e 5 formaram monocristais transparentes incolores cujas estruturas cristalinas são formadas por cadeias em ziguezague neutras de íons Mn(II) e Zn(II), respectivamente. Cada íon metálico está hexacoordenado com as três moléculas de água posicionadas em Meridional, dois oxigênios-oxamato de um ligante Hpcpa2- e um oxigênio-carboxilato de um outro grupo do Hpcpa2-. A distância entre os metais intracadeia Mn...Mn no complexo 4 é de 11,456 Å e Zn...Zn no complexo 5 é de 11,325 Å. O complexo 6 formou monocristais azuis, a estrutura consiste em um dímero em que o íon de Cu(II) encontra-se penta coordenado em uma geometria piramidal de base quadrada com dois íons de Cu(II) ligados por dois ligantes Hpcpa2- e com o ligante 2,2'-bipiridina atuando como ligante terminal.
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Mantel, Claire. "Etude des propriétés électroniques par RPE à haut champ et à haute fréquence de complexes mononucléaires de Mn(II) et Mn(III) et binucléaires de Mn(II)." Université Joseph Fourier (Grenoble), 2004. http://www.theses.fr/2004GRE10148.

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Ce mémoire est consacré à l'étude RPE à haut champ et haute fréquence de complexes mononucléaires de Mn(II) et Mn(III) ainsi que de complexes binucléaires de Mn(II). Une nouvelle série de complexes mononucléaires de Mn(III) hexacoordines du type [MnL(X)3](L=Ligand tridentate azote et X=anion) a été synthétisée. Les distorsions tétragonales de ces complexes ont été reliées au signe de D : D est positif pour une compression et négatif pour une élongation. Une série de complexe mononucléaires de Mn(II) pentacoordinés du type [MnL(X)2] a aussi été synthétisée. Lorsque le Mn(II) est coordiné à des ligands à champ faible, ceux-ci gouvernent D. En revanche, pour des complexes ne possédant que des ligands à champ fort, D est contrôlé par le nombre de cooordination du Mn. Enfin, une nouvelle méthode d'analyse basée sur une étude RPE multifréquence a été appliquée à deux complexes binucléaires de Mn(II) pour lesquels les deux ions métalliques sont couplés antiferromagnétiquement
This manuscript describes a high field and high frequency EPR study of mononuclear Mn(II) and Mn(III) as well as binuclear Mn(II) complexes. A new series of six-coordinated mononuclear Mn(III) complexes of general formula [MnL(X)3] (L=nitorgen tridentate ligand and X=anion) has been synthesized. Tetragonal distorsions of these complexes have been correlated with the sign of D : D is positive for a compression and negative for an elongation. A series of five-coordinated mononuclear Mn(II) complexes of general formula [MnL(X)2] was also synthesized. When Mn(II) is coordinated with weak field ligands, they control D. In contrast, for complexes with only strong fields ligands, D is governed by the coordination number of Mn. Finally, a new method of analysis based on a multifrequency EPR study was applied to two binucleat Mn(II) complexes in which the two metallic ions are antiferromagnetically coupled
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Robinson-Miller, Adam. "A study of Mn(II)/Mn(III) oxidation catalysts in alkene epoxidation and chromophore bleaching." Thesis, Northumbria University, 2015. http://nrl.northumbria.ac.uk/23589/.

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My original contribution to knowledge is presented in this work, in the new application of a previously synthesised manganese (III) complex as an effective and selective oxidation catalyst. Development of a series of conditions in which epoxidation reactions can successfully be undertaken was established with both hydrogen peroxide and n-tetrabutyl ammonium oxone. Epoxidations undertaken with hydrogen peroxide were commensurate with a competitive catalase like reaction. Establishment of the factors that drive the catalase type of oxidative reaction with the Mn(DMHP)2.Cl complex, including Michaelis Menten kinetic parameters and the effects of temperature and pH, allowed for a protocol to be set up that can favour epoxidation over catalase-like dismutation of hydrogen peroxide. To coincide with epoxidation work on hydrogen peroxide, a DFT study on the proposed reaction intermediates is presented with a focus on the likely active catalytic species. The role of imidazole was probed and showed that coordination of imidazole is slightly unfavoured and will be in equilibrium in solution, which coincided with experimental observations that imidazole was required in a slight excess for successful epoxidation. This work further demonstrated that in acidic conditions an oxomanganese(V) species is highly favoured and corresponds excellently to what is observed experimentally where very good conversion to epoxide of cyclooctene is achieved at pH 4.7. Work utilising n-tetrabutyl ammonium oxone as oxidant exhibited good to excellent conversions, and a trend was observed of high selectivity to strained cyclic alkenes. This was further probed by a joint study using a series of strained substrates that were synthesised and computational chemistry to determine the strains over the alkene bond. Collaborative work with the national mass spectrometry service allowed for identification of the intermediates of the reaction my mass spectrometry coupled with a UV/Vis spectroscopy study. Identification of an oxomanganese(V) species is presented in mass spectrometry as the active intermediate in epoxidations using n-tetrabutyl ammonium oxone . A study as to the effects of additive bases using cyclic voltammetry demonstrated a significant electronic effect on the oxidation potential of the catalyst as the source of the inductive effect, identification by mass spectrometry and UV/Vis showed direct evidence of axial ligation of the additive bases. Using an industrial manganese (II) catalyst in the bleaching of red stains (β-carotene and crocin), a protocol for bleaching was established, using UV/Vis as a method of analysis. Synthesis of a series of chelants which are used to stabilise the catalyst in the formulation was undertaken. Testing of the chelants in the bleaching system demonstrated their utility in the wash system across a pH range. The utility of surfactant when using chelants with the catalyst was established to give excellent bleaching and stability of the catalyst.
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Giovedi, Claudia. "Comportamento eletroquímico dos metais Co(II), Ni(II), Mn(II), Fe(II) e Zn(II) na presença do ligante azoteto." Universidade de São Paulo, 1998. http://www.teses.usp.br/teses/disponiveis/46/46133/tde-02122009-152133/.

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O comportamento eletroquímico dos metais cobalto(II), níquel(II), manganês(II), ferro(II) e zinco(II) na presença do ligante azoteto foi estudado em duas condições: variando-se a concentração do ligante em solução de 0 a 2,0 mol/L e apenas tendo-o pré-adsorvido na superficie do eletrodo de mercúrio, buscando-se assim esclarecer os fenômenos determinantes na extensão da atuação do ligante como mediador facilitando a etapa de transferência de elétrons do eletrodo para o metal. Os resultados obtidos nas duas séries de experimentos mostraram ser a extensão da atuação do ligante como mediador dependente do metal estudado. No primeiro caso a adição gradativa de azoteto às soluções que contêm os cátions metálicos causa a antecipação progressiva da onda de redução dos metais Co(II) e Ni(II), o deslocamento para potenciais progressivamente mais negativos no caso dos metais Mn(II) e Fe(II) e, para o Zn(II), uma pequena antecipação em baixas concentrações do ligante e em seguida o aumento de sobretensão. Tendo-se apenas o ligante adsorvido na superficie do eletrodo, verifica-se a diminuição da sobretensão de redução dos metais Co(II) e Ni(II), um pequeno aumento no caso do metal Zn(II) e a completa eliminação da reação de eletrodo para o Mn(II). As diferenças observadas nos dois experimentos, comprovaram a importância do fenômeno de complexação na superficie do eletrodo para que se verifique a atuação do ligante como mediador. No entanto, apesar da necessidade de ocorrer a interação do metal com o ligante para facilitar a reação de transferência de elétrons, o complexo formado na superficie do eletrodo não pode ser termodinamicamente mais estável que o aquo-íon do metal, pois neste caso ao invés da diminuição da sobretensão de redução do metal irá se registrar o deslocamento do potencial de redução diretamente para potenciais mais negativos.
The electrochemical behaviour of cobalt(II), nickel(II), manganese(II), iron(II) and zinc(II) was studied in the presence of azide in two conditions: varying the ligand concentrations in solution from 0.0 to 2.0 mol/L and just pre-adsorbing it onto the mercury electrode surface, in order to evaluate the determining aspects on the extent of the action of the ligand as a mediator in facilitating electron transfer. The results obtained in the two sets of experiments showed to what extent the action of the ligand as a mediator is dependent on the metal studied. In the first case, the addition of azide to solutions of these metaIs causes the following: a progressive anticipation in the reduction waves of Co(lI) and Ni(II); the shift towards more negative potentials for Mn(II) and Fe(II); and for Zn(TT) a small shift towards more positive potentials at low azide concentrations followed by a shift towards more negative potentials. The experiments carried out with the pre-adsorption ofthe azide onto the mercury surface showed the shift of the reduction waves of Co(lI) and Ni(II) towards more positive potentials, a small shift towards more negative potentials for Zn(II) and the complete elimination of the electrode reaction for Mn(II). The differences observed in the two experiments proved the importance of the complexation phenomenon onto the electrode surface in order to occur the action of the ligand as a mediator. However, inspite of the need of the interaction between metal and ligand to facilitate the electron transfer, the complex formed onto the electrode surface cannot be thermodynamically more stable than its metal aquo-ion, as in this case it will be observed the shift of the reduction potential towards more negative potentials.
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Murray, Karen J. "Acceleration of Cr(III) and Co(II) oxidation by Mn(II)-oxidizing bacteria /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2005. http://wwwlib.umi.com/cr/ucsd/fullcit?p3191987.

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PIMENTEL, AMANDA MAURO RODRIGUES. "REMOVAL OF CO(II) AND MN(II) FROM AQUEOUS SOLUTIONS USING R. OPACUS BIOMASS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2011. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=19096@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
A busca por tecnologias alternativas e de baixo custo operacional para a remoção de metais em efluentes tem direcionado a atenção para a biossorção. Recentemente vários materiais de origem biológica, como bactérias e resíduos agro-industriais têm sido utilizados para a remoção de íons metálicos de efluentes industriais. A biossorção de metais pesados por espécies biológicas envolve vários mecanismos que, em geral, dependem das espécies biológicas utilizadas e do processamento da biomassa. O cobalto e o manganês são amplamente utilizados em muitas aplicações industriais, e consequentemente, estão presentes nos efluentes provenientes de vários processos industriais, como por exemplo na mineração e produção de ligas. O objetivo deste trabalho foi investigar a eficiência do Rhodococcus opacus, que apresenta vários grupamentos fenólicos e carboxílicos (capazes de interagir com íons metálicos em solução), como adsorvente para a remoção de Co(II) e Mn(II) de soluções aquosas, visando futuras aplicações para o tratamento de efluentes. A caracterização física da superfície do R. opacus foi realizada com MEV, potencial zeta e análises de FTIR. A biomassa, R. opacus, foi previamente tratada com 0,1 mol.L(-1) NaOH e usada em todos os experimentos de biossorção. Todos os testes de biossorção foram realizados em batelada e os parâmetros avaliados foram: pH, concentração da biomassa e do metal, tempo de contato e temperatura. Os melhores valores de pH para a biossorção de Co(II) e Mn(II) foram 7,0 e 5,0, respectivamente. Para ambos os metais estudados, a capacidade de biossorção específica foi maior em soluções contendo baixas concentrações de metais. Para os dois metais, o processo de biossorção foi melhor descrito pelo modelo de Langmuir e pelo modelo cinético de pseudo segunda ordem. Os parâmetros termodinâmicos como DeltaG, DeltaS e DeltaH foram calculados e os processos de biossorção para a remoção do Co(II) e do Mn(II) a partir de soluções aquosas foram consideradas reações endotérmicas e exotérmicas, respectivamente. Este trabalho mostra que o R. opacus pode ser aplicado para a remoção de íons de Co(II) e Mn(II) de soluções aquosas. Após 180 minutos de contato da biomassa com as soluções contendo Co(II) e Mn(II), 84 por cento e 97 por cento dos íons metálicos presentes em solução foram removidos.
The search for alternative technologies and low operating cost for removal of heavy metals from effluent has directing attention to biosorption. Recently, various biological materials, such as bacteria and agro‐waste, have been used for removal of metallic ions from industrial effluents. Biosorption of heavy metals by biological species involves several mechanisms that, in general, depending on the type of specie used and biomass processing procedure. Cobalt and manganese are widely used in many industrial applications, consequently they are present in effluent derived from various industrial processes, for example: mining, alloy production. The objective of this work is to investigate the efficiency of Rhodococcus opacus, which presents various phenolic and carboxylic groups (able to interact with metal ions in solution), as an adsorbent for the removal of Co(II) and Mn(II) from aqueous solutions, aiming future applications for the treatment of effluents. Surface physical characterization of R. opacus was carried by MEV, zeta potential and FTIR analysis. The biomass, R. opacus, was previously treated with 0.1 mol.L(-1) NaOH solution and used in all biosorption experiments. All the biosorption tests were carried out in batch and the parameters evaluated were: pH, concentration of biomass and metal, contact time and temperature. The best pH value for biosorption of Co(II) and Mn(II) were 7.0 and 5.0 respectively. For both metal studied, the specific biosorption capacity was higher in solutions containing low metals concentrations. For both metals, the biosorption process was better described by the Langmuir and pseudo-second-order kinetic models. The thermodynamics parameters, such as DeltaG, DeltaS and DeltaH were calculated and the biosorption process for Co(II) and Mn(II) removal from the aqueous solutions were considered endothermic and exothermic reactions, respectively. This work shown the R. opacus can be applied for removal Co(II) and Mn(II) ions from aqueous solutions. After 180 min contact of biomass with solutions containing Co(II) and Mn(II), 84 per cent and 97 per cent of the metallic ion present in the solutions were removed.
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Vallejo, Adriana Cossu. "Síntese, caracterização e estudo do comportamento térmico dos 3-metoxibenzoatos de Mn(II), Co(II), Ni(II), Cu(II) e Zn(II), no estado sólido /." Araraquara [s.n.], 2004. http://hdl.handle.net/11449/97870.

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Orientador: Massao Ionashiro
Banca: Salvador Claro Neto
Banca: Mercedes de Moraes
Resumo: Os 3-metoxibenzoatos de Mn (II), Co (II), Ni (II), Cu (II) e de Zn (II), foram preparados fazendo-se reagir os respectivos carbonatos básicos com ácido 3-metoxibenzoico, ambos em suspensão aquosa à temperatura de ebulição. Os compostos assim obtidos foram estudados através da complexometria com EDTA, Termogravimetria (TG) e difratometria de raios X pelo método do pó. As curvas TG foram obtidas em atm de ar sintético e em cadinho de Pt para a amostra e referencia. Os resultados obtidos por termogravimetria (TG), complexometria com EDTA, possibilitaram estabelecer a estequiometria e o grau de hidratação dos compostos, que apresentaram fórmula geral: M(3-MeO-BZ) 2 nH2O com n= 0,5; 1,0;1,5 e 2,0. As curvas TG também permitiram verificar a estabilidade térmica, bem como o processo de decomposição térmica, destes compostos. Os difratogramas de raios X, pelo método do pó, mostraram que todos os compostos possuem estrutura cristalina, com exceção do composto níquel, obtidos no estado não cristalino.
Abstract: The 3-methoxybenzoates of Mn (II), Co (II), Ni (II), Cu (II) and Zn (II) were prepared by reacting the respective basic carbonates with methoxybenzoates acid, both in aqueous suspension in a heating temperature. The compounds therefore obtained were studied by complexometric (EDTA), thermogravimetry, derivative thermogravimetry and differential thermal analysis (TG. DTG, DTA) and X-Ray diffractometry. The curves (TG) were obtained in atmosphere synthetic air and in Platinum crucible as samples and references. The results obtained by thermogravimetry (TG) and complexometric (EDTA) enabled to establish the stoichiometry and the hydration degree of these compounds which presented the general formula: M(3-MeO-BZ)2 nH2O with n=0,5; 1,0; 1,5 and 2,0. Also the curves (TG) permitted to verify as the thermal stability as the decomposition process of these compounds. The X-Ray powder patterns made possible to show that all the compounds had crystalline structure, except the Nickel (II) compound, shapeless by itself.
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Carvalho, Cláudio Teodoro de. "Síntese, caracterização e estudo do comportamento térmico dos 2-metoxibenzoatos de Mn(II), Co(II), Ni(II), Cu(II) e Zn(II) no estado sólido /." Araraquara : [s.n.], 2006. http://hdl.handle.net/11449/97865.

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Orientador: Massao Ionashiro
Banca: João Olimpio Tognolli
Banca: Salvador Claro Neto
Resumo: Carbonatos de Mn(II), Co(II), Ni(II), Cu(II) e Zn(II) foram preparados por adição lenta da solução saturada de hidrogeno carbonato de sódio com gotejamento contínuo às soluções dos respectivos cloretos metálicos, exceto para o cobre, até a total precipitação do íon metálico. Os precipitados foram lavados com água destilada para eliminar os íons cloretos e teste qualitativo com solução de AgNO3/HNO3 foi realizado para confirmar a ausência destes, e após isso, foi mantida em suspensão. Os compostos no estado sólido foram preparados pela mistura dos respectivos carbonatos metálicos com o ácido 2-metoxibenzóico (2-MeO-HBz). A suspensão aquosa foi aquecida lentamente próximo da ebulição até neutralização total dos carbonatos. As soluções resultantes depois de arrefecidas foram mantidas em banho de gelo para recristalizar o ácido em excesso e filtradas. Assim, as soluções aquosas dos metoxibenzoatos metálicos foram concentradas em banho maria e o precipitado seco resultante deste processo colocado em um dessecador contendo cloreto de cálcio. O composto de cobre devido a sua baixa solubilidade foi preparado pela adição lenta com gotejamento contínuo de solução do 2-metoxibenzoato de sódio 0.1 mol L-1 à solução de sulfato de cobre, até a total precipitação do íon cobre e o precipitado lavado com água destilada para eliminação do íon sulfato e teste qualitativo de confirmação realizado com BaCl2 0.1 mol L-1, em seguida filtrada em papel de filtro Whatman 40 e o precipitado após seco foi colocado em dessecador contendo cloreto de cálcio. Os compostos sintetizados foram investigados por meio de espectroscopia de infravermelho, difratometria de raio X pelo método do pó, termogravimetria e análise térmica diferencial simultânea (TG-DTA), termogravimetria, termogravimetria derivada (TG/DTG), calorimetria exploratória diferencial (DSC) e outros métodos de análise.
Abstract: Carbonates of Mn (II), Co (II), Ni (II), Cu (II) and Zn (II) were prepared by adding slowly with continuous stirring saturated sodium hydrogen carbonate solution to the corresponding metal chloride solutions (except copper), until total precipitation of the metal ions. The precipitates were washed with distilled water until elimination of chloride ions (qualitative test with AgNO3/HNO3 solution) and maintained in aqueous suspension. olid state Mn (II), Co (II), Ni (II) and Zn (II) compounds were prepared by mixing the respective metal carbonates with 2-methoxybenzoic acid 99% (2-MeO-HBz) obtained from Aldrich, in slight excess. The aqueous suspension was heated slowly up to near ebullition, until total neutralization of the respective carbonates. The resulting solutions after cooled were maintained in an ice bath to recrystallize the acid in excess and filtered through a Whatman nº 40 filter paper. Thus, the aqueous solutions of the respective metal 2-methoxybenzoates were evaporated in a water bath until near dryness and kept in a desiccator over calcium chloride. The copper compound due to its low solubility was prepared by adding slowly, with continuous stirring, the aqueous solution of Na-2-MeO-Bz 0.1 mol L-1 to the respective metal sulphate solution, until total precipitation of the metal ions. The precipitate was washed with distilled water until elimination of the sulphate ion, filtered through and dried on Whatman no42 filter paper, and kept in a desiccator over anhydrous calcium chloride, under reduced pressure to constant mass. The compounds were investigated by means of infrared spectroscopy, X-Ray powder diffractometry, simultaneous thermogravimetry and differential thermal analysis (TG-DTA), Thermogravimetry derivative termogravimetry (TG/DTG), differential scanning calorimetry (DSC) and other methods of analysis.
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Carvalho, Cláudio Teodoro de [UNESP]. "Síntese, caracterização e estudo do comportamento térmico dos 2-metoxibenzoatos de Mn(II), Co(II), Ni(II), Cu(II) e Zn(II) no estado sólido." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/97865.

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Carbonatos de Mn(II), Co(II), Ni(II), Cu(II) e Zn(II) foram preparados por adição lenta da solução saturada de hidrogeno carbonato de sódio com gotejamento contínuo às soluções dos respectivos cloretos metálicos, exceto para o cobre, até a total precipitação do íon metálico. Os precipitados foram lavados com água destilada para eliminar os íons cloretos e teste qualitativo com solução de AgNO3/HNO3 foi realizado para confirmar a ausência destes, e após isso, foi mantida em suspensão. Os compostos no estado sólido foram preparados pela mistura dos respectivos carbonatos metálicos com o ácido 2-metoxibenzóico (2-MeO-HBz). A suspensão aquosa foi aquecida lentamente próximo da ebulição até neutralização total dos carbonatos. As soluções resultantes depois de arrefecidas foram mantidas em banho de gelo para recristalizar o ácido em excesso e filtradas. Assim, as soluções aquosas dos metoxibenzoatos metálicos foram concentradas em banho maria e o precipitado seco resultante deste processo colocado em um dessecador contendo cloreto de cálcio. O composto de cobre devido a sua baixa solubilidade foi preparado pela adição lenta com gotejamento contínuo de solução do 2-metoxibenzoato de sódio 0.1 mol L-1 à solução de sulfato de cobre, até a total precipitação do íon cobre e o precipitado lavado com água destilada para eliminação do íon sulfato e teste qualitativo de confirmação realizado com BaCl2 0.1 mol L-1, em seguida filtrada em papel de filtro Whatman 40 e o precipitado após seco foi colocado em dessecador contendo cloreto de cálcio. Os compostos sintetizados foram investigados por meio de espectroscopia de infravermelho, difratometria de raio X pelo método do pó, termogravimetria e análise térmica diferencial simultânea (TG-DTA), termogravimetria, termogravimetria derivada (TG/DTG), calorimetria exploratória diferencial (DSC) e outros métodos de análise.
Carbonates of Mn (II), Co (II), Ni (II), Cu (II) and Zn (II) were prepared by adding slowly with continuous stirring saturated sodium hydrogen carbonate solution to the corresponding metal chloride solutions (except copper), until total precipitation of the metal ions. The precipitates were washed with distilled water until elimination of chloride ions (qualitative test with AgNO3/HNO3 solution) and maintained in aqueous suspension. olid state Mn (II), Co (II), Ni (II) and Zn (II) compounds were prepared by mixing the respective metal carbonates with 2-methoxybenzoic acid 99% (2-MeO-HBz) obtained from Aldrich, in slight excess. The aqueous suspension was heated slowly up to near ebullition, until total neutralization of the respective carbonates. The resulting solutions after cooled were maintained in an ice bath to recrystallize the acid in excess and filtered through a Whatman nº 40 filter paper. Thus, the aqueous solutions of the respective metal 2-methoxybenzoates were evaporated in a water bath until near dryness and kept in a desiccator over calcium chloride. The copper compound due to its low solubility was prepared by adding slowly, with continuous stirring, the aqueous solution of Na-2-MeO-Bz 0.1 mol L-1 to the respective metal sulphate solution, until total precipitation of the metal ions. The precipitate was washed with distilled water until elimination of the sulphate ion, filtered through and dried on Whatman no42 filter paper, and kept in a desiccator over anhydrous calcium chloride, under reduced pressure to constant mass. The compounds were investigated by means of infrared spectroscopy, X-Ray powder diffractometry, simultaneous thermogravimetry and differential thermal analysis (TG-DTA), Thermogravimetry derivative termogravimetry (TG/DTG), differential scanning calorimetry (DSC) and other methods of analysis.
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Books on the topic "Mn(II)"

1

American Bar Association. Section of Natural Resources, Energy, and Environmental Law. Environmental challenges in animal feedlot operations: CAFO Roundtable II : May 12, 1999, Minneapolis, MN. [Chicago?]: American Bar Association, Section of Natural Resources, Energy, and Environmental Law, 1999.

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Beachy, Eli R. World War II in Medina County, Ohio: At home & overseas. Charleston, SC: The History Press, 2014.

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Yang, Heesun. Syntheses and applications of Mn-doped II-VI semiconductor nanocrystals. 2003.

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Book chapters on the topic "Mn(II)"

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Ioannidis, N., V. V. Barynin, and V. Petrouleas. "Progressive Reduction of the Mn-Catalase Mn(III)-Mn(III) State to the Mn(II)-Mn(III) and Mn(II)-Mn(II) States by Nitrogen Monoxide." In Photosynthesis: Mechanisms and Effects, 1323–26. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-3953-3_312.

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Emerson, David. "Microbial Oxidation of Fe(II) and Mn(II) at Circumneutral pH." In Environmental Microbe-Metal Interactions, 31–52. Washington, DC, USA: ASM Press, 2014. http://dx.doi.org/10.1128/9781555818098.ch2.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of heterobimetallic Mn(II)-Cd(II) complex with dithiofuroate." In Magnetic Properties of Paramagnetic Compounds, 695–96. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-54228-6_394.

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Salomon, Eitan, Gernot Renger, and Nir Keren. "Mn Transport and the Assembly of Photosystem II." In Bioenergetic Processes of Cyanobacteria, 423–42. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-0388-9_15.

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Veeramani, Harish, Eleanor J. Schofield, Elena Suvorova, Jonathan O. Sharp, John R. Bargar, and Rizlan Bernier-Latmani. "Environmental implications of Mn(II)-reacted biogenic UO2." In Uranium, Mining and Hydrogeology, 755–62. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-87746-2_98.

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Smith, P. J., K. A. Åhrling, M. R. Razeghifard, and R. J. Pace. "Structural Model for the Mn Centre Within Photosystem II, Including a Mn Dimer/YZ Complex." In Photosynthesis: Mechanisms and Effects, 1363–66. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-3953-3_321.

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Dietl, Tomasz. "III-V and II-VI Mn-Based Ferromagnetic Semiconductors." In Advances in Solid State Physics, 413–26. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-540-44838-9_29.

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Allakhverdiev, S. I., M. S. Karacan, G. Somer, N. Karacan, E. M. Khan, S. Y. Rane, S. Padhye, V. V. Klimov, and G. Renger. "Reconstitution of the Water-Oxidizing Complex in Mn-Depleted Photosystem II Complexes by Using Synthetic Binuclear Mn-Complexes." In Photosynthesis: from Light to Biosphere, 1225–28. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-009-0173-5_287.

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Sharmin, Eram, Manawwer Alam, Deewan Akram, and Fahmina Zafar. "Mn(II) and Zn(II) Containing Linseed Oil-Based Poly (Ester Urethane) as Protective Coatings." In Chemistry and Industrial Techniques for Chemical Engineers, 67–77. Series statement: Innovations in physical chemistry: monographic series: Apple Academic Press, 2020. http://dx.doi.org/10.1201/9780429286674-5.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of Mn(II)-Cu(II) complex with [di(4-bromo-2-iminomethyl-6-methylaminomethylphenolate)]." In Magnetic Properties of Paramagnetic Compounds, 595–96. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-54228-6_333.

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Conference papers on the topic "Mn(II)"

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Qiuyun Chen, Dongfang Zhou, Hao Chen, and Juan Wang. "Selective adsorption of Mn(II) ions using Mn(II) ion imprinted silica modified by di(2-picolyl)amine." In 2011 International Conference on Remote Sensing, Environment and Transportation Engineering (RSETE). IEEE, 2011. http://dx.doi.org/10.1109/rsete.2011.5966187.

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Blackwell–Whitehead, R. J., J. C. Pickering, G. Nave, and H. R. Jones. "High resolution Fourier transform spectroscopy of Mn I, Mn II and Ti I." In Fourier Transform Spectroscopy. Washington, D.C.: OSA, 2005. http://dx.doi.org/10.1364/fts.2005.fwa3.

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Lin, Shaohua, Huijun He, Rui Zhang, and Jierui Li. "Removal of Fe (II) and Mn (II) from Aqueous Solution by Palygorskite." In 2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring (CDCIEM). IEEE, 2011. http://dx.doi.org/10.1109/cdciem.2011.341.

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Suvorova, Elena. "Biogenic Mn(II)-coated UO2 nanoparticles: TEM experiment and modeling." In European Microscopy Congress 2020. Royal Microscopical Society, 2021. http://dx.doi.org/10.22443/rms.emc2020.845.

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Kent, P. R. C. "Ferromagnetism and carrier polarization of Mn-doped II-IV-V2 chalcopyrites." In PHYSICS OF SEMICONDUCTORS: 27th International Conference on the Physics of Semiconductors - ICPS-27. AIP, 2005. http://dx.doi.org/10.1063/1.1994622.

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Subhi, Deena Sa’ady Mohammed, Lina Ihsan Khaleel, and Mustafa A. Alheety. "Preparation, characterization and H2 storage capacity of newly Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) mixed ligand complexes of paracetamol and saccharine." In 2ND INTERNATIONAL CONFERENCE ON MATERIALS ENGINEERING & SCIENCE (IConMEAS 2019). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0000077.

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van Genuchten, Case M., and Arslan Ahmad. "IMPACT OF OXIDIZING AGENT ON GROUNDWATER ARSENIC TREATMENT BY AS(III), FE(II) AND MN(II) CO-OXIDATION." In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-359557.

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Joshi, Gaurav, K. K. Verma, D. D. Gudesaria, and N. Bhojak. "Microwave assisted synthesis, spectral, magnetic and bioevolution of few Mn (II)-amide complexes." In INTERNATIONAL CONFERENCE ON CONDENSED MATTER AND APPLIED PHYSICS (ICC 2015): Proceeding of International Conference on Condensed Matter and Applied Physics. Author(s), 2016. http://dx.doi.org/10.1063/1.4946719.

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Guoting Li, Wang Ning, and Shao Jian. "Effect of ultraviolet irradiation and hydrogen P eroxide on the degradation of orange II using Fe(III) and Mn(II)." In 2011 International Symposium on Water Resource and Environmental Protection (ISWREP). IEEE, 2011. http://dx.doi.org/10.1109/iswrep.2011.5893530.

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Kurbatov, D., V. Kosyak, A. Opanasyuk, and V. Starikov. "Optical properties of II-Mn-VI films obtained by close-spaced vacuum sublimation technique." In 2011 IEEE 11th International Conference on Laser and Fiber-Optical Networks Modeling (LFNM). IEEE, 2011. http://dx.doi.org/10.1109/lfnm.2011.6144991.

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Reports on the topic "Mn(II)"

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Bayat, N. Mn Oxide Biogenesis and Metal Sequestration in the Presence of Co (II) and Cu (II) By Bacillus SG-1 Bacterial Spores. Office of Scientific and Technical Information (OSTI), February 2004. http://dx.doi.org/10.2172/826724.

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Bargar, John R. In Situ Characterization of Mn(II) Oxidation by Spores of the Marine Bacillus sp. strain SG-1. Office of Scientific and Technical Information (OSTI), April 2000. http://dx.doi.org/10.2172/763761.

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Dalmasso, E. A. Study of the Mn-binding sites in photosystem II using antibodies raised against lumenal regions of the D1 and D2 reaction center proteins. Office of Scientific and Technical Information (OSTI), April 1992. http://dx.doi.org/10.2172/7045147.

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Dalmasso, Enrique Agustin. Study of the Mn-binding sites in photosystem II using antibodies raised against lumenal regions of the D1 and D2 reaction center proteins. Office of Scientific and Technical Information (OSTI), April 1992. http://dx.doi.org/10.2172/10160818.

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