Academic literature on the topic 'M(CO3)2'

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Journal articles on the topic "M(CO3)2"

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Mamoun, Al Majthoub Moh`d. "A Novel Method for Synthesis of CoII, NiII, ZnII and AgI Transition Metal Carbonates using Methylurea Precursor." International Journal of Sciences Volume 2, no. 2013-09 (2013): 119–23. https://doi.org/10.5281/zenodo.3348446.

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CoII, NiII, ZnII and AgII carbonates; M(CO3)2 (M = CoII, NiII, and ZnII) and Ag2CO3 were obtained during the reaction of aqueous solutions of Co(NO3)2, Ni(NO3)2, Zn(NO3)2 and AgNO3 with methylurea at ~ 90 oC for twelve hours. The reaction products were characterized through their elemental analysis and infrared spectroscopy. The infrared spectra clearly show the characteristic bands due to carbonate ions. General reaction equations describing the formation of some transition carbonates were proposed.Read Complete Article at ijSciences: V2201308276
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Arefiev, Anton V., Anton Shatskiy, Altyna Bekhtenova та Konstantin D. Litasov. "Quench Products of K-Cа-Mg Carbonate Melt at 3 and 6 GPa: Implications for Carbonatite Inclusions in Mantle Minerals". Minerals 12, № 9 (2022): 1077. http://dx.doi.org/10.3390/min12091077.

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Alkali-rich carbonate melts are found as inclusions in magmatic minerals, mantle xenoliths, and diamonds from kimberlites and lamproites worldwide. However, the depth of their origin and bulk melt composition remains unclear. Here, we studied quench products of K-Cа-Mg carbonate melt at 3 and 6 GPa. The following carbonates were detected at 3 GPa: K2CO3, K2Cа(CO3)2 bütschliite (R32/m), o-K2Cа3(CO3)4 (P212121), K2Cа2(CO3)3 (R3), K2Mg(CO3)2 (R3m), Mg-bearing calcite, dolomite, and magnesite. At 6 GPa, the variety of quench carbonate phases includes K2CO3, K2Cа(CO3)2 bütschliite (R32/m), d-K2Cа3(
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Воробьева, С. Н., И. А. Байдина та И. В. Корольков. "Исследование кристаллической структуры димерного комплекса родия(III) [(NH3)6Rh2(μ-CO3)(μ-OH)2](NO3)2∙H2O". Журнал структурной химии 57, № 8 (2016): 1683. http://dx.doi.org/10.26902/jsc20160814.

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Получено и структурно охарактеризовано комплексное соединение состава [(NH3)6Rh2(m-CO3)(m-OH)2](NO3)2×H2O. Кристаллографические данные: a = 7,9103(16), b = 9,606(2), c = 11,283(2) Å, α = 103,206(4), β = 110,045(4), γ = 93,890(5)°, пространственная группа P-1, Z = 2, dвыч = 2,335 г/cм3. Кристаллическая структура представляет собой упаковку димерных комплексных катионов родия [Rh2(μ-OH)2(μ-CO3)(NH3)6]2+, нитрат-анионов и молекул кристаллизационной воды, связанных друг с другом системой водородных связей. Соединение исследовано методами ИК спектроскопии и РФА. Выделенная кристаллическая фаза плох
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Chen, Jiongquan, Zhihua Yang, Kui Wu, Yun Yang, and Shilie Pan. "Sr5(CO3)2(BO3)2: A new family member of isostructural mixed borate and carbonate Ba4M(BO3)2(CO3)2 (M = Ba, Sr) with isolated BO3 and CO3 groups." Journal of Molecular Structure 1247 (January 2022): 131382. http://dx.doi.org/10.1016/j.molstruc.2021.131382.

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Zhuravlev, Yurii N., and Victor V. Atuchin. "Comprehensive Density Functional Theory Studies of Vibrational Spectra of Carbonates." Nanomaterials 10, no. 11 (2020): 2275. http://dx.doi.org/10.3390/nano10112275.

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Within the framework of the density functional theory (DFT) and the hybrid functional B3LYP by means of the CRYSTAL17 program code, the wavenumbers and intensities of normal oscillations of MgCO3, CaCO3, ZnCO3, CdCO3 in the structure of calcite; CaMg(CO3)2, CdMg(CO3)2, CaMn(CO3)2, CaZn(CO3)2 in the structure of dolomite; BaMg(CO3)2 in the structure of the norsethite type; and CaCO3, SrCO3, BaCO3, and PbCO3 in the structure of aragonite were calculated. Infrared absorption and Raman spectra were compared with the known experimental data of synthetic and natural crystals. For lattice and intramo
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Tareen, J. A. K., A. R. Fazeli, B. Basavalingu, and G. T. Bhandage. "Thermodynamic Data for Dolomite and Kutnahorite from the Experimental Decarbonation Curves." Journal Geological Society of India 40, no. 6 (1992): 545–56. http://dx.doi.org/10.17491/jgsi/1992/400606.

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Abstract The P-T stability field of rhombohedral double carbonates, CaMg (CO3)2 (dolomite) and CaMn (CO3)2 (kutnahorite) has been studied up to 2 kb of PCO2. The dolomite decomposes to CaCO3 (ss)+MgO+CO2 and the kutnahorite to CaCO3 (ss)+MnO+CO2. The kutnahorite was considered to be completely disordered (R¯3C) near the decomposition temperature while the dolomite was found to be in ordered state at the decomposition temperature, though both were considered to stabilise with ordered structures at lower temperatures. The standard enthalpy and free energy data retrieved for the ordered dolomite
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Mahmoud, Mamdoh R., and Sameh H. Othman. "Efficient decontamination of naturally occurring radionuclide from aqueous carbonate solutions by ion flotation process." Radiochimica Acta 106, no. 6 (2018): 465–76. http://dx.doi.org/10.1515/ract-2017-2823.

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Abstract The present study evaluates the performance of ion flotation process for removal of uranyl tricarbonate complex, UO2(CO3)34−, which is the dominant species in many aqueous media particularly seawater, from aqueous solutions using cetyltrimethylammonium bromide, CTAB, as a cationic surfactant. Flotation of UO2(CO3)34− as a function in the solution pH is investigated in absence and in presence of carbonate. Removal percentage >99% is achieved in the pH range 8.5–11.5 in presence of 5×10−3 M carbonate. The influence of concentrations of ethanol (0.1–2% v/v) and CTAB (5×10−5–1.4×10−3 M
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Pokharel, Uttam R., Frank R. Fronczek, and Andrew W. Maverick. "Structural Rearrangement in Cyclic Cu(II) Pyridyltriazole Complexes: Oxidation of Dabco to Oxalate and CO2 Conversion to Carbonate." Molecules 30, no. 7 (2025): 1430. https://doi.org/10.3390/molecules30071430.

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Structural rearrangements in metal–organic supramolecules constructed from the coordination of Cu(II) with m-xpt (m-xylylenebis(pyridyltriazole)) are investigated upon their interaction with 1,4-diazabicyclo[2.2.2]octane (dabco) and carbon dioxide-enriched air. The binuclear [Cu2(m-xpt)2]4+ complexes react with dabco to produce a carbonate-bridged trinuclear complex, [Cu3(m-xpt)3(µ-CO3)]4+, and an oxalate-bridged binuclear complex, [Cu2(m-xpt)2(µ-C2O4)]2+, where carbonate and oxalate likely originate from CO2 and dabco, respectively. The trinuclear complex reassembles the original dimer upon t
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Scholze, Raphael, Samer Amayri, and Tobias Reich. "Modeling the sorption of Np(V) on Na-montmorillonite – effects of pH, ionic strength and CO2." Radiochimica Acta 107, no. 7 (2019): 615–22. http://dx.doi.org/10.1515/ract-2019-3109.

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Abstract Results from batch type experiments were modeled using the 2 SPNE SC/CE model developed by Bradbury and Baeyens. This work focused on the applicability of this model to the sorption of Np(V) on Na-montmorillonite under high saline conditions (0.1–3.0 M NaCl) in the pH range of 2–10 and in the presence of dissolved CO2 (p(CO2) = 10−3.3 atm). Under ambient air conditions two additional surface complexation species had to be taken into account, which are ternary species involving one carbonate ligand (≡SONpO2(CO3)2−, ≡SONpO2(CO3)Na−). The gained set of complexation parameters was success
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Kutlu, Ibrahim, Hans-J�rgen Kalz, Rudolf Wartchow, Hartmut Ehrhardt, Hinrich Seidel, and Gerd Meyer. "Kalium-Lanthanoid-Carbonate, KM(CO3)2 (M ? Nd, Gd, Dy, Ho, Yb)." Zeitschrift f�r anorganische und allgemeine Chemie 623, no. 11 (1997): 1753–58. http://dx.doi.org/10.1002/zaac.19976231115.

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Book chapters on the topic "M(CO3)2"

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Sposito, Garrison. "Soil Salinity." In The Chemistry of Soils. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780190630881.003.0016.

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A soil is salineif the electrical conductivity of its soil solution as obtained by extraction from a water-saturated soil paste (ECe) exceeds 4 dS m-1. (The measurement of electrical conductivity for a soil saturation extract is discussed in Methods of Soil Analysis,listed under For Further Reading at the end of this chapter.) According to this definition, about a quarter of the agricultural soils worldwide are saline, but values of ECe > 1 dS m-1 are encountered typically in arid-zone soils, which cover almost one-third of the global ice-free land area. Ions released into the soil solution
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