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Artykuły w czasopismach na temat „Mixed-anions compounds”

Autor: Grafiati

Data publikacji: 1 lutego 2025

Data aktualizacji: 31 lipca 2025

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1

Shmelev, M. A., T. D. Shatrov, O. V. Zvereva, et al. "Mixed-Carboxylate Cadmium–Europium Compounds with Monocarboxylic Acid Anions." Russian Journal of Coordination Chemistry 50, no. 8 (2024): 557–66. http://dx.doi.org/10.1134/s1070328424600554.

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2

Koksharova, T. V., A. Yu Kovalyov, T. V. Mandzii, and Ye M. Fadieiev. "COORDINATION COMPOUNDS OF 3d-METALS 5-SULFOSALICYLATES." Odesa National University Herald. Chemistry 29, no. 1(87) (2024): 5–20. http://dx.doi.org/10.18524/2304-0947.2024.1(87).307855.

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The review is devoted to the characteristic of 3d-metal coordination compounds with 5-sulfosalicylate anions and their mixed- ligand complexes. Their preparation, structure, properties and applications are considered.

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3

Sánchez-Lara, Eduardo, Amalia García-García, Enrique González-Vergara, Javier Cepeda, and Antonio Rodríguez-Diéguez. "Magneto-structural correlations of cyclo-tetravanadates functionalized with mixed-ligand copper(ii) complexes." New Journal of Chemistry 45, no. 11 (2021): 5081–92. http://dx.doi.org/10.1039/d0nj06004f.

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Bimetallic materials based on tetravanadate anions and mixed ligand copper(ii) complexes were readily synthesized under non-hydrothermal conditions. The compounds show interesting structural and magnetic diversity mediated by copper symmetry.

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4

Mazhenov, N. A., and Z. R. Syzdykova. "The formation of the mixed anions PAsO7 in solid solutions Mg2P2O7 — Mg2As2O7." Bulletin of the Karaganda University. "Physics" Series 105, no. 1 (2022): 117–22. http://dx.doi.org/10.31489/2022ph1/117-122.

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The article presents structural features at formation of solid solutions of the isostructural Mg2P2O7 and Mg2As2O7 connections. In these compounds, complex Р2О7 4- anions, As2O2 4- , as well as the formation of complex PAsO7 4 anions, is not natural. The formation of solid solutions is confirmed by the linear dependence of x-ray debaegram and optical refractive indices, depending on the concentration of P/As. In the article, phosphates are involved in energy processes in cells. For the first time, the formation of mixed anions in polyphosphates has been proven. The oscillatory spectra of pyro

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5

Ehlich, Hendrik, Annette Schier, and Hubert Schmidbaur. "Preparation and Crystal Structure of Bis(isocyanide)gold(I) Bis(phenylene-1,2-dithiolato)aurates(III)." Zeitschrift für Naturforschung B 57, no. 8 (2002): 890–94. http://dx.doi.org/10.1515/znb-2002-0808.

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The reaction of (isocyanide)gold(I) chlorides [(RNC)AuCl, R = tBu, cHex] with phenylene- 1,2-dithiol and sodium methoxide (molar ratio 2:1:2) in methanol / dichloromethane leads to the formation of deep green mixed-valent salts [(RNC)2Au]+[Au(S2C6H4)2]- in ca. 35% yield. As determined by single crystal X-ray diffraction methods, the two compounds have entirely different supramolecular structures. For R = tBu stacked planar anions and rod-like cations form alternating layers, while for R = cHex alternating cations and anions are arranged in chains with long S- -Au contacts [3.422 Å].

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6

Fábry, Jan, Michaela Fridrichová, Michal Dušek, Karla Fejfarová, and Radmila Krupková. "Mixed crystals of 2-carbamoylguanidinium with hydrogen fluorophosphonate and hydrogen phosphite in the ratios 1:0, 0.76 (2):0.24 (2) and 0.115 (7):0.885 (7)." Acta Crystallographica Section C Crystal Structure Communications 68, no. 2 (2012): o76—o83. http://dx.doi.org/10.1107/s0108270111054114.

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The title compounds, 2-carbamoylguanidinium hydrogen fluorophosphonate, C2H7N4O+·HFO3P−, (I), 2-carbamoylguanidinium–hydrogen fluorophosphonate–hydrogen phosphite (1/0.76/0.24), C2H7N4O+·0.76HFO3P−·0.24H2O3P−, (II), and 2-carbamoylguanidinium–hydrogen fluorophosphonate–hydrogen phosphite (1/0.115/0.885), C2H7N4O+·0.115HFO3P−·0.885H2O3P−, (III), are isostructural with guanylurea hydrogen phosphite, C2H7N4O+·H2O3P−[Fridrichová, Němec, Císařová & Němec (2010).CrystEngComm,12, 2054–2056]. They constitute structures where the hydrogen phosphite anion has been fully or partially replaced by hydr

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7

Herberhold, Max, Guo-Xin Jin, Achim Müller та Michael Penk. "The Reactions of Dioxobis(acetylacetonato)moIybdenum, MoO2(acac)2, with Tetrathiomolybdate and Tetrathiotungstate. High Formation Tendency of the {Mvi(μ-S)2Miv} (μ-S )2MVI} Group and the [MVI,S3(S2)]2- Type Ligand (M = Mo, W)". Zeitschrift für Naturforschung B 46, № 1 (1991): 25–34. http://dx.doi.org/10.1515/znb-1991-0107.

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1Tetraphenylphosphonium tetrathiometalates, (PPh4)2MS4 (M = Mo, W), react with MoO2 (acac)2 (2:1) in boiling acetonitrile in redox processes to give mixed-crystal compounds (as expected) of the approximate composition (PPh4)2[Mo3O1.9S8.1] (1) and (PPh4)2[Mo1.4W1.6O1.3S8.3] (2), respectively. and 2 were characterized by single crystal X-ray structure analyses. The various anions o f 1 and 2 contain {MVI(μ-S)2MoIVO (μ-S )2MVI} cores (M = Mo (1); Mo, W (2); bond angle M ··· Mo ··· M = 151.3° (1) 152.2 - 154.3° (2)), which have high formation tendencies. The terminal positions are occupied by S an

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8

Černý, Radovan, Matteo Brighi, and Fabrizio Murgia. "The Crystal Chemistry of Inorganic Hydroborates." Chemistry 2, no. 4 (2020): 805–26. http://dx.doi.org/10.3390/chemistry2040053.

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The crystal structures of inorganic hydroborates (salts and coordination compounds with anions containing hydrogen bonded to boron) except for the simplest anion, borohydride BH4−, are analyzed regarding their structural prototypes found in the inorganic databases such as Pearson’s Crystal Data [Villars and Cenzual (2015), Pearson’s Crystal Data. Crystal Structure Database for Inorganic Compounds, Release 2019/2020, ASM International, Materials Park, Ohio, USA]. Only the compounds with hydroborate as the only type of anion are reviewed, although including compounds gathering more than one diff

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9

Schneider, Daniel, та Annette Schier. "Random Interstitial Halide Accommodation in an α,ω-Alkylidene-diammonium Template". Zeitschrift für Naturforschung B 59, № 11-12 (2004): 1395–99. http://dx.doi.org/10.1515/znb-2004-11-1205.

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N,N,N′,N′-Tetramethylethylenediammonium diiodide [Me2HNCH2]2I2 (1) as well as a set of I/Br- (2) and Br/Cl-mixed-halide salts (4 and 5) have been prepared, and their structures determined by single crystal X-ray diffraction. The results show the [Me2HNCH2]2 2+ dication to be a highly flexible template for halide inclusion, thereby tolerating the assembly of anions of different size, with phase widths of 0 ≤ x ≤ 2 for a monoclinic form with [Me2HNCH2]2I2−xBrx and 0 ≤ x ≤ 1 for a triclinic form with [Me2HNCH2]2Br2−xClx. The isotypic mixed halide compounds [Me2HNCH2]2IBr (2) and [Me2HNCH2]2BrCl (

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10

Matveev, Evgenii Yu, Varvara V. Avdeeva, Konstantin Yu Zhizhin, Elena A. Malinina, and Nikolay T. Kuznetsov. "Effect of Nature of Substituents on Coordination Properties of Mono- and Disubstituted Derivatives of Boron Cluster Anions [BnHn]2– (n = 10, 12) and Carboranes with exo-Polyhedral B–X Bonds (X = N, O, S, Hal)." Inorganics 10, no. 12 (2022): 238. http://dx.doi.org/10.3390/inorganics10120238.

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This review systematizes data on the coordination ability of mono- and disubstituted derivatives of boron cluster anions and carboranes in complexation with transition metals. Boron clusters anions [BnHn]2–, monocarborane anions [CBnHn–1]–, and dicarboranes [C2BnHn–2] (with non-functionalized carbon atoms) (n = 10, 12) containing the B–X exo-polyhedral bonds (X = N, O, S, Hal) are discussed. Synthesis and structural features of complexes known to date are described. The effect of complexing metal and substituent attached to the boron cage on the composition and structures of the final complexe

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11

Zelikman, V. M., K. I. Maslakov, I. A. Ivanin, and I. G. Tarkhanova. "Using Immobilized Hybrid Composites Based on Mixed Polyoxometalates As Catalysts for the Oxidation of Heteroatomic Compounds." Журнал физической химии 97, no. 9 (2023): 1239–47. http://dx.doi.org/10.31857/s0044453723090273.

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A set of silica gel-immobilized compounds is synthesized that consists of ethylimidazole cations and anions of phosphotungstic acid (lacunar (PW11) or mixed (PW11M), where M = Zn, Ni, Cu, Co, Mn). The composition and textural characteristics of the compounds are determined by physicochemical means (IR spectroscopy, XPS, SEM/EDX, adsorption). The synthesized heterogeneous composites are active in the oxidation of sulfur- and nitrogen-containing components of petroleum feedstocks with hydrogen peroxide. A comparative analysis is performed of the samples’ catalytic properties in the oxidation of

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12

Tukumova, Natalia V., Tatiana R. Usacheva, Tran Thi Dieu Thuan, Valentin A. Sharnin, and Concetta Giancola. "STABILITY OF COORDINATION COMPOUNDS OF SOME d-METAL IONS WITH SUCCINIC ACID ANION IN AQUEOUS-ETHANOL SOLVENTS." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 61, no. 9-10 (2018): 15–22. http://dx.doi.org/10.6060/ivkkt20186109-10.5778.

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The paper provides an overview of own data on complexation of nickel (II), cobalt (II) and cooper (II) ions with succinic acid anion in water-organic mixed solvents. Proper data are compared with data reported in literature for d-metal complexes with anions of maleic and succinic acids. The effect of aqueous ethanol solvent compositions on the stability of coordination compounds of M2+ with succinic acid anion as well as on рК values of stepwise succinic acid dissociation was carried out by a potentiometric titration at ionic strength of 0.1 maintained with sodium perchlorate at 298.15 ± 0.10

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13

Chondroudis, Konstantinos, and Mercouri G. Kanatzidis. "K4In2(PSe5)2(P2Se6) and Rb3Sn(PSe5)(P2Se6): One-Dimensional Compounds with Mixed Selenophosphate Anions." Journal of Solid State Chemistry 136, no. 1 (1998): 79–86. http://dx.doi.org/10.1006/jssc.1997.7659.

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14

Stüble, Pirmin, Angela Berroth, and Caroline Röhr. "Synthesis and crystal structure of new K and Rb selenido/tellurido ferrate cluster compounds." Zeitschrift für Naturforschung B 71, no. 5 (2016): 485–501. http://dx.doi.org/10.1515/znb-2015-0223.

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AbstractIn the course of a systematic study of alkali iron chalcogenido salts containing clusters [Fe4Q8] a series of new mixed-valent potassium and rubidium selenido and tellurido ferrates(II/III) was synthesized by carefully heating the pure elements enclosed in sample tubes under an argon atmosphere up to maximum temperatures of 800–900 °C. Their crystal structures have been determined by means of single crystal X-ray diffraction. The mixed-valent FeII/III tellurido ferrates A7[Fe4Te8] form three different structure types. All structures contain tetramers of four edge sharing [FeTe4] tetrah

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15

Mehrotra, Raj Narain. "Review on the Chemistry of [M(NH3)n](XO4)m (M = Transition Metal, X = Mn, Tc or Re, n = 1–6, m = 1–3) Ammine Complexes." Inorganics 11, no. 7 (2023): 308. http://dx.doi.org/10.3390/inorganics11070308.

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The preparation of ammine complexes of transition metals having oxidizing anions such as permanganate and perrhenate ions is a great challenge due to possible reactions between ammonia and oxidizing anions during the synthesis of these materials. However, it has an important role in both the development of new oxidants in organic chemistry and especially in the preparation of mixed-metal oxide catalyst precursors and metal alloys for their controlled temperature decomposition reactions. Therefore, in this paper, synthetic procedures to prepare ammonia complexes of transition metal permanganate

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16

Grossholz, Hagen, Dirk D. Zimmermann, Oliver Janka, and Thomas Schleid. "Oxidfluoridsulfide der Lanthanoide vom Formeltyp M6O2F8S3 (M=La–Nd, Sm, Gd) / Oxide Fluoride Sulfides of the Lanthanoids with the Formula M6O2F8S3 (M = La–Nd, Sm, Gd)." Zeitschrift für Naturforschung B 68, no. 7 (2013): 751–60. http://dx.doi.org/10.5560/znb.2013-3110.

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The lanthanoid(III) oxide fluoride sulfides M6O2F8S3 (M = La-Nd, Sm, Gd) can be obtained by reacting the rare-earth metals, their trifluorides and sesquioxides with elemental sulfur in appropriate molar ratios at 850 °C flux-assisted by NaCl in gas-tightly sealed niobium or tantalum ampoules. All compounds are colorless, except for those containing M = Pr with green, M = Nd with lilac and M = Sm with yellow color. They form transparent single crystals as needles or rods. The M6O2F8S3 representatives crystallize in a hexagonal structure (space group: P63/m; a≈1382 - 1326, c≈398 - 376 pm, c/a≈0:

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17

Luo, Zhong-Zhen, Chen-Sheng Lin, Wen-Dan Cheng, et al. "Syntheses, crystal and electronic structures, and characterizations of the mixed anions compounds Ba4In2Te2Q5 (Q = S, Se)." CrystEngComm 15, no. 23 (2013): 4773. http://dx.doi.org/10.1039/c3ce40487k.

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Matveev, Evgenii Yu, Varvara V. Avdeeva, Alexey S. Kubasov, Konstantin Yu Zhizhin, Elena A. Malinina, and Nikolay T. Kuznetsov. "Synthesis and Structures of Lead(II) Complexes with Hydroxy-Substituted Closo-Decaborate Anions." Inorganics 11, no. 4 (2023): 144. http://dx.doi.org/10.3390/inorganics11040144.

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Mixed-ligand lead(II) complexes with 2,2′-bipyridyl and [B10H9OH]2− or monosubstituted hydroxy-substituted closo-decaborate anions with a pendant hydroxy group, separated from the boron cage by an alkoxylic spacer of different lengths [B10H9O(CH2)xO(CH2)2OH]]2− (x = 2 or 5) have been synthesized. Compounds have been characterized by IR and multinuclear NMR spectroscopies. The structures of binuclear complex [Pb(bipy)2[B10H9OH]]2·CH3CN (1·CH3CN), mononuclear complex [Pb(bipy)2[B10H9O(CH2)2O(CH2)2OH]]·0.5bipy·CH3CN (2·0.5bipy·CH3CN), and polymeric complex [Pb(bipy)[B10H9O(CH2)5O(CH2)2OH]]n (3) h

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19

Tsujimoto, Yoshihiro, Yoshitaka Matsushita, Kazunari Yamaura, and Tetsuo Uchikoshi. "High-pressure Synthesis of New layered Oxyhalide Perovskites." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C762. http://dx.doi.org/10.1107/s2053273314092377.

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The development of transition metal oxides with perovskite-based structure has stimulated the search for mixed anion systems such as oxynitrides, oxyhalides and oxysulfides because incorporation of two different anions in one structure offers further opportunity to effectively induce chemical and physical properties that the pure oxides cannot possess. Such mixed anion phases, however, are difficult to be synthesized by a conventional high-temperature reaction. In this study, we have employed a high pressure technique to overcome this issue, and succeessfully synthesized a series of new layere

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20

Furqani, Firda, Lee Wah Lim, and Toyohide Takeuchi. "One-pot Facile Preparation of Amino-functionalized Silica Hybrid Monoliths for Mixed-mode Chromatography." Journal of the Indonesian Chemical Society 2, no. 2 (2019): 81. http://dx.doi.org/10.34311/jics.2019.02.2.81.

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Silica hybrid monolithic columns were prepared using two precursors, in which organo-functionalized trialkoxysilanes are mixed with tetraalkoxysilanes. In this study, several types of amino-functionalized silica hybrid monolithic columns were prepared via single-step “one-pot” approach, and the amount of silica precursors, porogens, as well as the reaction conditions were optimized. The preparation was carried out by mixing the silica precursors, i.e. tetraethoxysilane (TEOS) or tetramethoxysilane (TMOS) with amino precursors such as aminopropyltrimethoxysilane (APTES), aminoethylaminopropyl-t

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21

Lehner, Anna J., and Caroline Röhr. "Kalium-Doppelsalze mit den gemischten Trisulfidometallat-Ionen [MoOS3]2- und [WOS3]2- / Potassium Double Salts with the Mixed Trisulfidometalate Ions [MoOS3]2- and [WOS3]2-." Zeitschrift für Naturforschung B 68, no. 7 (2013): 761–77. http://dx.doi.org/10.5560/znb.2013-3108.

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In the course of the synthesis of mixed oxidosulfido molybdates and tungstates by passing H2S gas through solutions of the oxido metalates, several new salts containing the metalates [MOS3]2- besides further anions (halides X-, hydrosulfide SH- or thiosulfate S2O2-3) were obtained as well-formed crystals. Their crystal structures have been determined using single crystal X-ray data. The salts containing SH- as the additional anion crystallize with a new structure type (orthorhombic, space group Pmn21, M=Mo=W, TM =20=-125 °C: a=957.7(2)/954.15(2), b=636.2(2)/636.19(1), c=812.4(2)/809.88(2) pm,

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22

Kageyama, Keisuke, Yang Yang, Toki Kageyama, et al. "Kinetic Control of Anion Stoichiometry in Hexagonal BaTiO3." Inorganics 10, no. 6 (2022): 73. http://dx.doi.org/10.3390/inorganics10060073.

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The cubic oxyhydride perovskite BaTiO3−xHx, where the well-known ferroelectric oxide BaTiO3 is partially hydridized, exhibits a variety of functions such as being a catalyst and precursor for the synthesis of mixed-anion compounds by utilizing the labile nature of hydride anions. In this study, we present a hexagonal version, BaTi(O3−xHx) (x < 0.6) with the 6H-type structure, synthesized by a topochemical reaction using hydride reduction, unlike reported hexagonal oxyhydrides obtained under high pressure. The conversion of cubic BaTiO3 (150 nm) to the hexagonal phase by heat treatment at lo

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23

Atchekzaï, Jean, Bernard Bonnetot, Henri Mongeot, Sami Boufi, and Bernard Frange. "The reaction of boron trichloride – tertiary amine adducts with pseudohalide salts under phase transfer catalysis conditions." Canadian Journal of Chemistry 70, no. 10 (1992): 2520–25. http://dx.doi.org/10.1139/v92-319.

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The reaction of boron trichloride – tertiary amine adducts D•BCl3 with pseudohalide salts MX was investigated in a homogeneous medium or in two-phase systems under liquid/liquid or solid/liquid phase transfer catalysis conditions (PTC) as a potential route to the adducts D•BX3 (X = NCS, NCO). Best results were obtained with solid/liquid PTC with tetraglyme as catalyst. By suitable choice of the tertiary amine, solvent, and stoichiometry, the symmetric compounds D•BX3 were thus prepared with good yields, the same reaction leading either to mixed species D•BX3-nCln (n = 1, 2; X = NCS, NCO) or to

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24

Coles, Martyn P., and Peter B. Hitchcock. "Bicyclic Guanidinates in Mono- and Di-Valent Metal Complexes, Including Group 1/2 and Group 1/12 Heterometallic Systems." Australian Journal of Chemistry 66, no. 10 (2013): 1124. http://dx.doi.org/10.1071/ch12560.

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Complexes containing mono-, di-, and mixed mono-/di-valent metal centres supported by the [hpp]– anion (hppH = 1,3,4,6,7,8-hexahydro-2H-pyrimido[1,2-a]pyrimidine) are reported. Amine elimination from Mn(N{SiMe3}2)2 using the neutral guanidine is a clean route to the heteroleptic compound [Mn(hpp)(N{SiMe3}2)]2. Addition of 18-crown-6 to a solution of the hpp– potassium salt (hppK) enables the first potassium derivative of [hpp]– to be structurally analysed, showing that the crown ether restricts aggregation to afford a monometallic structure. Mixed lithium–magnesium and lithium–zinc compounds o

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Antipov, Evgeny V., Nellie R. Khasanova, and Stanislav S. Fedotov. "Perspectives on Li and transition metal fluoride phosphates as cathode materials for a new generation of Li-ion batteries." IUCrJ 2, no. 1 (2015): 85–94. http://dx.doi.org/10.1107/s205225251402329x.

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To satisfy the needs of rapidly growing applications, Li-ion batteries require further significant improvements of their key properties: specific energy and power, cyclability, safety and costs. The first generation of cathode materials for Li-ion batteries based on mixed oxides with either spinel or rock-salt derivatives has already been widely commercialized, but the potential to improve the performance of these materials further is almost exhausted. Li and transition metal inorganic compounds containing different polyanions are now considered as the most promising cathode materials for the

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Rawat, Ashima, and Ravindra Pandey. "Strain and Substrate-Induced Electronic Properties of Novel Mixed Anion-Based 2D ScHX2 (X = I/Br) Semiconductors." Nanomaterials 14, no. 17 (2024): 1390. http://dx.doi.org/10.3390/nano14171390.

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Exploration of compounds featuring multiple anions beyond the single-oxide ion, such as oxyhalides and oxyhydrides, offers an avenue for developing materials with the prospect of novel functionality. In this paper, we present the results for a mixed anion layered material, ScHX2 (X: Br, I) based on density functional theory. The result predicted the ScHX2 (X: Br, I) monolayers to be stable and semiconducting. Notably, the electronic and mechanical properties of the ScHX2 monolayers are comparable to well-established 2D materials like graphene and MoS2, rendering them highly suitable for electr

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Baroud, Najah, Syarifa Wahidah Al Idrus, and R. Rahmawati. "Characterization of methanol extract from Renggak (Amomum dealbatum Roxb) leaves and its application as an anion detector." Acta Chimica Asiana 7, no. 2 (2024): 534–40. https://doi.org/10.29303/aca.v7i2.192.

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Renggak (Amomum dealbatum Roxb) shows significant potential as a natural resource with applications in various fields, particularly in environmental sensing. This capability positions Renggak as a promising candidate for developing eco-friendly chemosensors, contributing to improved monitoring of these critical anions in the environment and health. Additionally, its diverse phytochemical profile suggests potential uses in medicinal applications, further enhancing its value as a multifaceted plant. This research focuses on the characterization of the methanol extract from Renggak (Amomum dealba

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Zhong, Kai-Long. "Tris(1,10-phenanthroline-κ2N,N′)iron(II) bis(2,4,5-tricarboxybenzoate) monohydrate and tris(2,2′-bipyridine-κ2N,N′)iron(II) 2,5-dicarboxybenzene-1,4-dicarboxylate–benzene-1,2,4,5-tetracarboxylic acid–water (1/1/2)". Acta Crystallographica Section C Crystal Structure Communications 68, № 9 (2012): m259—m264. http://dx.doi.org/10.1107/s0108270112034567.

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The title compounds, tris(1,10-phenanthroline-κ2N,N′)iron(II) bis(2,4,5-tricarboxybenzoate) monohydrate, [Fe(C12H8N2)3](C10H5O8)2·H2O, (I), and tris(2,2′-bipyridine-κ2N,N′)iron(II) 2,5-dicarboxybenzene-1,4-dicarboxylate–benzene-1,2,4,5-tetracarboxylic acid–water (1/1/2), [Fe(C10H8N2)3](C10H4O8)·C10H6O8·2H2O, (II), were obtained during an attempt to synthesize a mixed-ligand complex of FeIIwith an N-containing ligand and benzene-1,2,4,5-tetracarboxylic acidviaa solvothermal reaction. In both mononuclear complexes, each FeIImetal ion is six-coordinated in a distorted octahedral manner by six N a

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Govindasamy, Rathika, Sathiyapriya Thirumalaisamy, Kohila chandran, Manikandan Dhayalan, and Mika Sillanpaa. "Improved corrosion inhibition by heterocyclic compounds on mild steel in acid medium." Corrosion Reviews 40, no. 2 (2022): 137–48. http://dx.doi.org/10.1515/corrrev-2021-0045.

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Abstract A detailed comparative study on inhibitive behaviour against corrosion of mild steel in 1N H2SO4 IN HCl for the Schiff bases 2,6-diphenyl-3-methyl azinan-4-one (D3MA) (S1), 2,6-diphenyl-3-methyl azinan-4-one semicarbazone (D3MAS) (S2), 2,6-diphenyl azinan-4-one (DA) (S3) and 2,6-diphenylazinan-4-one semicarbazone (DAS) (S4) was investigated using gravimetric and potentiodynamic polarisation methods. The thermodynamic parameters for the mild steel corrosion and the synergistic behaviour of the inhibitors in the presence of anions and cations were determined and discussed. It was found

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Shmelev, Maxim A., Anastasia A. Levina, Aleksandr S. Chistyakov, et al. "Influence of the anion ratio in the composition of mixed benzoate/pentafluorobenzoate complexes of europium on the structure and photoluminescent properties." Mendeleev Communications 35, no. 1 (2025): 35–38. https://doi.org/10.71267/mencom.7566.

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Mixed carboxylate benzoate (bz)/pentafluorobenzoate (pfb) complexes with different ratios of pfb and bz anions in the {Eu(EtOH)<sub>2</sub>(pfb)(bz)<sub>2</sub>}<sub>n</sub> and {Eu(EtOH)(pfb)<sub>2</sub>(bz)}<sub>n</sub> compositions were obtained and structurally characterized. Changes in the pfb/bz ratio lead to changes in the geometry of the polymer chains and the lanthanide polyhedron, as well as to a rearrangement of the system of non-covalent interactions, which also affects the photoluminescent properties. The synthesized comp

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Mishchenko, Artem, Elena Trunova та Tamara Makotryk. "THERMODESTRUCTION OF Lа(III) COORDINATION COMPOUNDS WITH ALIPHATIC β-KETOESTERS". Ukrainian Chemistry Journal 87, № 8 (2021): 99–115. http://dx.doi.org/10.33609/2708-129x.87.08.2021.99-115.

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Mono- and mixed-ligand complexes of La (III) with aliphatic β-ketoesters were synthesized in the solid state. The complexes have the general formulas LаL2OH·H2O (L=meacac, etacac, alacac) and La(meacac)2X·nCH3OH(X = NO3, CH3COO; n = 1, 2). Their composition, structure, and thermal properties were established by chemical and thermal analysis, IR spectroscopy. It is shown that β-ketoesters are coordinated to the La (III) ion bidentate-cyclically into monoligand hydroxocomplexes. Ligand complexes with methylacetoacetate have an oligomeric structure. They consist of cationic fragments [La(meacac)

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Dzhurinskii, B. F., and G. V. Lysanova. "ChemInform Abstract: Lanthanide Compounds with Mixed Oxo Anions: Synthesis, Structure, and Existence Boundaries in the Series from Lathanum to Lutetium." ChemInform 30, no. 13 (2010): no. http://dx.doi.org/10.1002/chin.199913028.

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Frisch, Gero, and Caroline Röhr. "A5Fe3O6] (A = Rb, Cs), Cs[FeO2] und Cs8[Fe2O7]: Neue Oxoferrate der schweren Alkalimetalle / A5Fe3O6] (A = Rb, Cs), Cs[FeO2] and Cs8[Fe2O7]: New Oxoferrates of the Heavy Alkaline Metals." Zeitschrift für Naturforschung B 59, no. 7 (2004): 771–81. http://dx.doi.org/10.1515/znb-2004-0705.

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The title compounds were synthesized at a temperature of 775 K via reaction of Fe2O3 with elemental cesium and rubidium alone or in combination with their hyperoxides AO2 where required by stoichiometry. The structures of the dark-red crystals have been determined by single crystal x-ray diffraction (Cs[FeO2]: cubic, space group Fd3m, a = 839.2(2) pm, Z = 8, R1 = 0.0547 and A5[Fe3O6] (A = Cs: orthorhombic, space group P212121, a = 861.8(2), b = 870.7(2), c = 1658.7(3) pm, Z = 4, R1 = 0.0617 and A = Rb: tetragonal, space group I4̅2d, a = 862.01(8), c= 1504.7(2) pm, Z =4, R1= 0.0334). These thre

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Vassilyeva, Olga Yu, Elena A. Buvaylo, Vladimir N. Kokozay, and Brian W. Skelton. "Organic–inorganic hybrid mixed-halide Zn^II and Cd^II tetrahalometallates with the 2-methylimidazo[1,5-a]pyridinium cation." Acta Crystallographica Section E Crystallographic Communications 78, no. 4 (2022): 359–64. http://dx.doi.org/10.1107/s2056989022002420.

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Three isomorphous 0-D hybrid salts, namely, 2-methylimidazo[1,5-a]pyridinium trichloridoiodidozincate(II), (C8H9N2)2[ZnCl3.19I0.81] or [L]2[ZnCl3.19I0.81], (I), 2-methylimidazo[1,5-a]pyridinium dibromidodichloridocadmate(II), (C8H9N2)2[CdBr2.42Cl1.58] or [L]2[CdBr2.42Cl1.58], (II), and 2-methylimidazo[1,5-a]pyridinium trichloridoiodidocadmate(II), (C8H9N2)2[CdCl3.90I0.10] or [L]2[CdCl3.90I0.10], (III), are assembled from discrete 2-methylimidazo[1,5-a]pyridinium cations, L +, and mixed-halide tetrahalometallate anions. In the three structures, there are two crystallographically non-equivalent

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Martsinko, E. E., I. I. Seifullina, E. A. Chebanenko, and A. G. Pesaroglo. "MIXED-LIGAND GERMANIUM–LANTHANIDE COMPLEXES WITH 1-HYDROXYETHYLIDENEDIPHOSPHONIC ACID AND 2,2’-BIPYRIDINE." Odesa National University Herald. Chemistry 27, no. 3(83) (2023): 53–62. http://dx.doi.org/10.18524/2304-0947.2022.3(83).268690.

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There were developed the novel methods for the synthesis of six mixed- metal and mixed-ligand complexes of germanium and rare earth metals (Pr, Nd, Dy, Ho, Tm, Lu) with 1-hydroxyethylidenediphosphonic acid and 2,2´-bipyridine. The compounds have been characterized using various research methods: elemental analysis, mass spectrometry, electrical conductivity, thermogravimetry, IR spectroscopy. It has proved that all complexes are crystal hydrates, belong to heterometallic mixed ligand compounds [Ln(H2O)4(bipy)2]2 [Ge(m-hedp) (m- OH)]6⸱nH2O, Ln=Pr (1); Nd (2); Dy (3); Ho (4); Tm (5); Lu (6); n =

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Palamarchuk, M. S., E. A. Shelestyuk, E. A. Tokar’, and A. M. Egorin. "Sorption of Complex Co(II)-EDTA by Anion Exchange Resin AB-17-8 from Model Deactivating Solutions Containing Fe(III)-EDTA." Ecology and Industry of Russia 24, no. 6 (2020): 20–23. http://dx.doi.org/10.18412/1816-0395-2020-6-20-23.

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The results of studies of the sorption of EDTA complexes with ions Co(II) and Fe(III) on anion exchange resin AB-17-8 used in mixed filters of special water treatment apparatus of NPP are presented. The character of the sorption process of complexes Co(II)-EDTA and Fe(III)-EDTA in acidic media depending on the pH and salt background of solutions simulating deactivating solutions formed after the dissolution of iron oxide compounds containing cobalt radionuclides was studied. It has been shown that upon deactivation of spent ion-exchanged resins with acid solutions of EDTA salts, the secondary

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Pauwels, Damien, Alain Demourgues, Hervé Laronze, et al. "Structural features of new rare earth-based mixed anions (O, S, F) compounds: relationships between optical absorption and rare earth environment." Solid State Sciences 4, no. 11-12 (2002): 1471–79. http://dx.doi.org/10.1016/s1293-2558(02)00038-9.

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Androš, Lidija, Dubravka Matković-Čalogović, and Pavica Planinić. "A series of compounds containing various (oxalato)tantalate(v) complex anions – synthesis, properties and the mixed-metal oxide formation via thermal decomposition." CrystEngComm 15, no. 3 (2013): 533–43. http://dx.doi.org/10.1039/c2ce26391b.

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Kucha, H., and E. F. Stumpfl. "Thiosulphates as precursors of banded sphalerite and pyrite at Bleiberg, Austria." Mineralogical Magazine 56, no. 383 (1992): 165–72. http://dx.doi.org/10.1180/minmag.1992.056.383.03.

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AbstractBanded sphalerite from Bleiberg, Austria, contains ubiquitous relics of Fe-thiosulphates and Fesulphites up to 50 μm in size. Zn, Pb, Ni and As form admixtures ranging from a few to 12 wt.% in these compounds. It is suggested that banded sphalerite is formed by a replacement of banded thiosulphate and thiosulphite precursors. This suggestion is supported by a significant admixture of Fe 0.41-8.20 wt.%) and the presence of goethite inclusions in banded sphalerite. In contrast, crystalline ZnS intergrown with the banded variety is Ni-free and contains only 0.06-0.14 wt.% Fe.Banded pyrite

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Béres, Kende Attila, Zsolt Dürvanger, Zoltán Homonnay, et al. "Insight into the Structure and Redox Chemistry of [Carbonatotetraamminecobalt(III)] Permanganate and Its Monohydrate as Co-Mn-Oxide Catalyst Precursors of the Fischer-Tropsch Synthesis." Inorganics 12, no. 4 (2024): 94. http://dx.doi.org/10.3390/inorganics12040094.

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[Carbonatotetraamminecobalt(III)] permanganate monohydrate was synthesized first in the metathesis reaction of [Co(NH3)4CO3]NO3 and NaMnO4 in aqueous solution. Its thermal dehydration at 100 °C resulted in phase-pure [Co(NH3)4CO3]MnO4 (compound 1). Compounds 1 and 2 (i.e., the hydrated form) were studied with IR, far-IR, and low-temperature Raman spectroscopies, and their vibrational modes were assigned. The lattice parameters were determined by powder X-ray diffraction (PXRD) and single crystal X-ray diffraction (SXRD) methods for the triclinic and orthorhombic compounds 1 and 2, respectively

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Hoekstra, Ryan M., Yen-Ting Chen, Matthew D. Kiesz, et al. "Resonance Raman spectroscopic study of solvent-dependent coexistence of localized and delocalized dinitroaromatic radical anions." Canadian Journal of Chemistry 92, no. 10 (2014): 940–47. http://dx.doi.org/10.1139/cjc-2014-0058.

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Optical absorption spectra of three dinitroaromatic radical anions, 2,7-dinitro-9,9-dimethylfluorene (1•−), 4,4′-dinitrobiphenyl (2•−), and 4,4′-dinitrotolane (3•−) in solvents THF, HMPA, and MeCN show both an unresolved broad band characteristic of charge-localized mixed valence species (Robin-Day classification Class II), and a vibronically structured band of the delocalized species (Class III). With decreasing solvent reorganization energy, a greater portion of the compounds become charge-delocalized. In particular, 1•− with the greatest coupling, is almost entirely composed of the delocali

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Shafei, Gamal M. S. El. "Change of Structural and Adsorption Properties Due to Isomorphous Substitution in Hydrotalcite-like Materials." Adsorption Science & Technology 20, no. 8 (2002): 767–86. http://dx.doi.org/10.1260/026361702321104264.

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Samples of hydrotalcite-like compounds with the general formula [M2+1-xM3+x(OH)2]x+•Ax–•nH2O were prepared via coprecipitation through the addition of NaOH to mixed chloride salt solutions. On maintaining the M2+/M3+ ratio equal to three, it was possible to effect isomorphous substitution. This led to the preparation of different compounds which could be compared to the parent material in which M2+ = Ni and M3+ = Al. Other divalent cations used were Mg2+ and Zn2+ with Cr3+ and Fe3+ being employed as trivalent cations. The ratio between cations of the same charge was unity in all the isomorphou

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Kussainova, Bakytgul, Gaukhar Tazhkenova, Ivan Kazarinov, et al. "Adsorption of Bichromate and Arsenate Anions by a Sorbent Based on Bentonite Clay Modified with Polyhydroxocations of Iron and Aluminum by the “Co-Precipitation” Method." Molecules 29, no. 15 (2024): 3709. http://dx.doi.org/10.3390/molecules29153709.

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The physicochemical properties of natural bentonite and its sorbents were studied. It has been established the modification of natural bentonites using polyhydroxoxides of iron (III) (mod.1_Fe_5-c) and aluminum (III) (mod.1_Al_5-c) by the “co-precipitation” method led to changes in their chemical composition, structure, and sorption properties. It was shown that modified sorbents based on natural bentonite are finely porous (nanostructured) objects with a predominance of pores of 1.5–8.0 nm in size. The modification of bentonite with iron (III) and aluminum compounds by the “co-precipitation”

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Baranets, Sviatoslav, Gregory M. Darone, and Svilen Bobev. "Structural diversity among multinary pnictide oxides: a minireview focused on semiconducting and superconducting heteroanionic materials." Zeitschrift für Kristallographie - Crystalline Materials 237, no. 1-3 (2022): 1–26. http://dx.doi.org/10.1515/zkri-2021-2079.

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Abstract Incorporating different anions with varied ionic sizes and charges is a rapidly growing approach to bring out unusual physical properties among various classes of solid-state materials, pnictides and chalcogenides in particular. This minireview is focused on hetero-anionic materials based on the pnictogens, which have been demonstrated to offer an impressive diversity of crystal chemistry and electronic structures. In addition, many pnictide oxides or oxypnictides, over the course of the last decade, have been shown to exhibit a broad spectrum of superconducting, magnetic, and semicon

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Chen, Shuai, Zexu Xue, Nan Gao, Xiaomei Yang, and Ling Zang. "Perylene Diimide-Based Fluorescent and Colorimetric Sensors for Environmental Detection." Sensors 20, no. 3 (2020): 917. http://dx.doi.org/10.3390/s20030917.

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Perylene tetracarboxylic diimide (PDI) and its derivatives exhibit excellent thermal, chemical and optical stability, strong electron affinity, strong visible-light absorption and unique fluorescence on/off features. The combination of these features makes PDIs ideal molecular frameworks for development in a broad range of sensors for detecting environmental pollutants such as heavy metal ions (e.g., Cu2+, Cd2+, Hg2+, Pd2+, etc.), inorganic anions (e.g., F−, ClO4−, PO4−, etc.), as well as poisonous organic compounds such as nitriles, amines, nitroaromatics, benzene homologues, etc. In this rev

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Hernández-Fernández, Adrián, Eduardo Iniesta-López, Yolanda Garrido, Ioannis A. Ieropoulos, and Francisco J. Hernández-Fernández. "Microbial Fuel Cell Using a Novel Ionic-Liquid-Type Membrane-Cathode Assembly with Heterotrophic Anodic Denitrification for Slurry Treatment." Sustainability 15, no. 20 (2023): 14817. http://dx.doi.org/10.3390/su152014817.

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In this paper, microbial fuel cell technology with heterotrophic anodic denitrification, based on a new membrane-cathode assembly, was tested for slurry treatment and bioenergy production. Slurry is used due to its high chemical oxygen demand and a high content of nutrient compounds of nitrogen which can contaminate soil and water. The new membrane-cathode assembly systems were based on different ammonium and phosphonium cations combined with chloride, bistriflimide, phosphate, and phosphinate anions and a non-noble catalyst composed of copper and cobalt mixed-valence oxides. The influence of

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Qinjun Chen, Qinjun Chen, Guoqiang Lai Guoqiang Lai, Zanen Wu Zanen Wu, Xia Chen Xia Chen, Jinhui Zhang Jinhui Zhang, and Shibiao Wu Shibiao Wu. "Photodegradation of Norfloxacin on Ni0.5Cd0.5S/g-C3N4 Composites in Water." Journal of the chemical society of pakistan 47, no. 2 (2025): 193. https://doi.org/10.52568/001643/jcsp/47.02.2025.

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Widely used in hospital and animal farming, the large amounts of norfloxacin (NORF) were discharged into the water environment which caused severe pollution problems. Photocatalysis technology can decompose, mineralize most organic compounds, including NORF. In this paper, Ni0.5Cd0.5S(NCS), g-C3N4(CN) and their composites were prepared as photocatalysts. The composites were characterized by SEM, energy-disperse X-ray spectroscopy (EDS) and XRD. It was showed that NORF in water can be effectively removed by NCS/CN composites in visible light. The experimental results proved that the composites

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Dore, Elisabetta, Franco Frau, and Rosa Cidu. "Antimonate Removal from Polluted Mining Water by Calcined Layered Double Hydroxides." Crystals 9, no. 8 (2019): 410. http://dx.doi.org/10.3390/cryst9080410.

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Calcined layered double hydroxides (LDHs) can be used to remove Sb(V), in the Sb(OH)6− form, from aqueous solutions. Sorption batch experiments showed that the mixed MgAlFe oxides, obtained from calcined hydrotalcite-like compound (3HT-cal), removed Sb(OH)6− through the formation of a non-LDH brandholzite-like compound, whereas the mixed ZnAl oxides, resulting from calcined zaccagnaite-like compound (2ZC-cal), trapped Sb(OH)6− in the interlayer during the formation of a Sb(V)-bearing LDH (the zincalstibite-like compound). The competition effect of coexistent anions on Sb(OH)6− removal was HAsO

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Bilov, V. V., V. I. Markov, and V. V. Shipilo. "Hydroamination of n-butanol on Cu-containing anion-modified catalysts." Voprosy Khimii i Khimicheskoi Tekhnologii, no. 1 (March 2023): 50–55. http://dx.doi.org/10.32434/0321-4095-2023-146-1-50-55.

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The purpose of the work is to establish the relationship between the composition of new Cu-containing anion-modified compositions and their catalytic potential in the synthesis of dibutylamine, which is an important intermediate for the production of such significant products as medicines, insecticides, vulcanization accelerators for rubber compounds, multifunctional corrosion inhibitors, etc. Composite materials were prepared by thermal decomposition of a copper-ammonia-carbonate solution in the presence of chromate, molybdate, aluminum tungstate, aluminum metahydroxide, and lanthanum carbona

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DE PAULA, Márcio, and Regina Helena Porto FRANCISCO. "USE OF DUST X-RAY DIFFRACTION IN THE CHARACTERIZATION OF PEROVSKITAS TYPE FERRITES." Periódico Tchê Química 05, no. 9 (2008): 23–30. http://dx.doi.org/10.52571/ptq.v5.n09.2008.janeiro/4_pgs_23_30.pdf.

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The X-ray diffraction is one experimental method very important on characterization solids compounds. In the case of polycrystalline samples, the x-ray powder diffraction allows for the identification of the solid phase and the characterization of structural changes. The present paper was prepared any antiferromagnetic ceramic phases, bicalcic ferrite derivate (Ca2Fe2O5) by solid state reaction from pulverized reagents and mixed manually. These were heated in the Pt melting pan, in air oven at temperature between 1000 and 1450oC for 12h. The occurrence of reaction with reagents and the product

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