Relevant bibliographies by topics / Manganese chromate crystals

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  1. Journal articles
  2. Dissertations / Theses

Academic literature on the topic 'Manganese chromate crystals'

Author: Grafiati
Published: 4 June 2021
Last updated: 28 July 2025

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Journal articles on the topic "Manganese chromate crystals"

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Semenaka, Valentyna V., Oksana V. Nesterova, Vladimir N. Kokozay, Irina V. Omelchenko та Oleg V. Shishkin. "Hexakis(dimethylformamide-κO)manganese(II) (dimethylformamide-κO)pentakis(thiocyanato-κN)chromate(III)". Acta Crystallographica Section E Structure Reports Online 68, № 6 (2012): m823. http://dx.doi.org/10.1107/s1600536812023069.

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The title compound, [Mn(C3H7NO)6][Cr(NCS)5(C3H7NO)], was obtained unintentionally as a product of an attempted synthesis of heterometallic complexes based on Reineckes anion using manganese powder, Reineckes salt and 1-(2-hydroxyethyl)tetrazole as starting materials. The crystal structure of the complex consists of an [Mn(dmf)6]2+ cation and a [Cr(NCS)5(dmf)]2− anion (dmf = dimethylformamide). The MnII and CrIII atoms show a slightly distorted octahedral MnO6 and CrN5O coordination geometries with adjacent angles in the range 85.29 (13)–95.96 (14)°.
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2

Chand, Prem, Jilson Mathew, Alex Punnoose, B. P. Maurya, and R. J. Singh. "An EPR study of manganese(II) complexes in potassium chromate single crystal." Spectrochimica Acta Part A: Molecular Spectroscopy 49, no. 11 (1993): 1621–27. http://dx.doi.org/10.1016/0584-8539(93)80119-u.

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Mataev, M. M., N. B. Abisheva, Zh Y. Tupsinova, and M. R. Abdraymova. "Synthesis and structural study of multiferroics in the Gd x Bi 1−x Cr 0.5 Fe 0.5 O 3 system (x=0.1, 0.2, 0.5)." BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series 130, no. 1 (2020): 81–87. http://dx.doi.org/10.32523/2616-6771-2020-130-1-82-88.

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The synthesis of compounds was carring out in the system of gadolinium chromite - ferrites doped with bismuth. The citrate-nitrate method was chosen as the synthesis method. An X-ray phase analysis was performed to study the formation of new phases. Based on the results of x-ray phase analysis, it was determined that the obtained compounds in the chromiteferrite system are crystallized in orthorhombic syngony with the Pbnm(62) spatial group. It is showing that when nitric acid is using as a precipitator, can be obtaining single-phase powders. In addition, the structure and parameters of elemen
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Cheng, Xia Wei, Zheng Yi Jiang, Dong Bin Wei, et al. "Effect of Water Vapor on Oxidation of Ferritic Stainless Steel 21Cr-0.6Mo-Nb-Ti in Simulated Reheating Environment." Advanced Materials Research 690-693 (May 2013): 280–89. http://dx.doi.org/10.4028/www.scientific.net/amr.690-693.280.

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High temperature oxidation of ferritic stainless steel 21Cr-0.6Mo-Nb-Ti was carried out isothermally at 1100 oC under different water vapour content conditions in an electrical furnace. Water vapour does accelerate the formation of oxide scale of stainless steel 21Cr-0.6Mo-Nb-Ti, however, it is not significant. Some oxide grains consist of spinel crystal structure, which should be spinel Manganese Chromite. In dry air atmosphere, the grain of the spinel is more and bigger than that in wet air. No breakaway oxidation occurs in the experiment indicating that 21Cr-0.6Mo-Nb-Ti has very high oxidat
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Kolo, Kamal, and Alain Préat. "In Vitro Experimental Observations on Fungal Colonization, Metalophagus Behavior, Tunneling, Bioleaching and Bioweathering of Multiple Mineral Substrates." Minerals 13, no. 12 (2023): 1540. http://dx.doi.org/10.3390/min13121540.

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This study reports on experimental observations during fungi–mineral substrate interactions. Selected mineral substrates of biotite, muscovite, bauxite, chromite, galena, malachite, manganite, and plagioclase were exposed in vitro to free fungal growth under open conditions. The interaction produced strong biochemical and biomechanical alterations to the mineral substrates. Specifically, reported here is a three-dimensional thigmotropic colonization pattern of the mineral surfaces that suggested a possible pattern of fungal metalophagus behavior. Authigenic secondary mineral biomineralization
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Новоселов, К. А., Е. В. Белогуб, И. А. Блинов, and Д. А. Артемьев. "Detrital chrome spinels of the udokan sedimentary basin in transbaikalia." Геология и геофизика 65, no. 5 (2024): 694–709. http://dx.doi.org/10.15372/gig2023173.

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Удоканский осадочный бассейн является уникальной геологической структурой, вмещающей множество месторождений и проявлений медистых песчаников. Детритовый хромшпинелид присутствует в метапесчаниках сакуканской свиты на Удоканском и Ункурском месторождениях, которые тяготеют к прослоям «естественного шлиха». Минерал образует реликтовые включения в кристаллах магнетита. Состав его отличается высокими концентрациями цинка (до 11.62 мас. % ZnO) и марганца (до 6.32 мас. % MnO) при практически полном отсутствии магния. По сравнению с ассоциирующим магнетитом, хромит существенно обогащен германием (до
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Huang, Juanjuan, Adam P. Tornheim, Xianbo Shi, et al. "Dispersive X-ray absorption spectroscopy using independent grazing-incidence focusing and convexly bent Bragg-crystal dispersing optics." Journal of Synchrotron Radiation 32, no. 4 (2025): 1068–84. https://doi.org/10.1107/s1600577525004953.

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We present a modular instrument for dispersive X-ray absorption spectroscopy (DXAS) developed for the Advanced Spectroscopy Beamline at Sector 25 of the Advanced Photon Source. The setup employs a double-multilayer monochromator to provide X-rays with a broad energy bandwidth, Kirkpatrick–Baez mirrors for focusing, a convexly bent Bragg-crystal polychromator for energy dispersion, and a pixel-array detector to resolve all X-ray energies and collect their intensity simultaneously, thereby enabling acquisition of a full X-ray absorption spectrum in a single shot. The use of separate optics for X
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Kanižaj, Lidija, Pavla Šenjug, Damir Pajić, Luka Pavić, Krešimir Molčanov, and Marijana Jurić. "Magnetic and Electrical Behaviors of the Homo- and Heterometallic 1D and 3D Coordination Polymers Based on the Partial Decomposition of the [Cr(C2O4)3]3− Building Block." Materials 13, no. 23 (2020): 5341. http://dx.doi.org/10.3390/ma13235341.

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One-dimensional (1D) oxalate-bridged homometallic {[Mn(bpy)(C2O4)]·1.5H2O}n (1) (bpy = 2,2’-bipyridine) and heterodimetallic {[CrCu3(bpy)3(CH3OH)(H2O)(C2O4)4][Cu(bpy)Cr(C2O4)3]·CH2Cl2·CH3OH·H2O}n (2) coordination polymers, as well as the three-dimensional (3D) heterotrimetallic {[CaCr2Cu2(phen)4(C2O4)6]·4CH3CN·2H2O}n (3) (1,10-phenanthroline) network, have been synthesized by a building block approach using a layering technique, and characterized by single-crystal X-ray diffraction, infrared (IR) and impedance spectroscopies and magnetization measurements. During the crystallization process pa
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Novoselov, K. A., E. V. Belogub, I. A. Blinov, and D. A. Artem’ev. "Detrital Chrome Spinels of the Udokan Sedimentary Basin in Transbaikalia." Russian Geology and Geophysics, December 12, 2023. http://dx.doi.org/10.2113/rgg20234632.

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Abstract ––The Udokan sedimentary basin is a unique geological structure containing many copperstone deposits and occurrences. A detrital chrome spinel is identified in the metasandstones of the Sakukan Formation at the Udokan and Unkur deposits, which tend to interlayers of natural heavy mineral concentrates. The mineral forms relict inclusions in magnetite crystals. Its composition is distinguished by high concentrations of zinc (up to 11.62 wt.% ZnO) and manganese (up to 6.32 wt.% MnO) with an almost complete absence of magnesium. In comparison with the associated magnetite, chromite is sig
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Dissertations / Theses on the topic "Manganese chromate crystals"

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Li, Zhigang. "Formation et simulation de l'image en microscopie electronique a haute resolution : application a la structure de composes de type "lamellaire"." Toulouse 3, 1987. http://www.theses.fr/1987TOU30282.

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Cette these etudie trois problemes specifiques de la microscopie electronique a haute resolution : le transfert du contraste des images, leur interpretation au moyen de simulations et l'application de cette technique a la determination des structures locales dans les materiaux cristallins, au niveau atomique. Obtention de resultats originaux en ce qui concerne la microstructure de materiaux de type lamelllaire : dans les composes de type re::(6) se::(8) cl::(2), avant et apres insertion d'hydrazine, dans les composes de type mps::(3) et dans taps::(6)se
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