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Journal articles on the topic 'Ammonium halide crystals'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Rehana, Tahira, N. Choudhary S., and M. Hasan M. "Study of cohesion and allied properties of ammonium halide crystals." Journal of Indian Chemical Society Vol. 88, Sep 2011 (2011): 1349–53. https://doi.org/10.5281/zenodo.5787873.

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University Department of Physics, T. M. Bhagalpur University, Bhagalpur-812 007, Bihar, India <em>Manuscript received 11 June 2010, accepted 31 December 2010</em> A study of cohesion and allied properties of ammonium halides has been carried out using an interionic potential which consists of long range coulomb interaction, van der Waals interaction (vdWI), due to di11ole-dipole und dipole-quadrupole interactions, three-body interaction (TBI) and a short range overlap repulsive interaction proposed by Ali et al. [Physica (B), 1991, 168, 121] operative up to second nearest neighbour. The values

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2

Tomkinson, J., and M. T. F. Telling. "Ammonium ions in alkali metal halide crystals: Tunnelling and spin relaxation." Physical Chemistry Chemical Physics 8, no. 38 (2006): 4434. http://dx.doi.org/10.1039/b608590c.

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3

Huang, Yundi, Pengfei Hu, Jianing Song, Yongle Li, and Alessandro Stroppa. "Molecular dynamics simulations of ferroelectricity in di-isopropyl-ammonium halide molecular crystals." Chemical Physics Letters 730 (September 2019): 367–71. http://dx.doi.org/10.1016/j.cplett.2019.06.019.

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4

Dávid, Anna, Julia Morát, Mengyun Chen, Feng Gao, Mats Fahlman, and Xianjie Liu. "Mapping Uncharted Lead-Free Halide Perovskites and Related Low-Dimensional Structures." Materials 17, no. 2 (2024): 491. http://dx.doi.org/10.3390/ma17020491.

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Research on perovskites has grown exponentially in the past decade due to the potential of methyl ammonium lead iodide in photovoltaics. Although these devices have achieved remarkable and competitive power conversion efficiency, concerns have been raised regarding the toxicity of lead and its impact on scaling up the technology. Eliminating lead while conserving the performance of photovoltaic devices is a great challenge. To achieve this goal, the research has been expanded to thousands of compounds with similar or loosely related crystal structures and compositions. Some materials are “re-d

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5

Gaida, Nico Alexander, Takuya Sasaki, Zheng Liu, et al. "Nanowire crystals of tantalum nitride grown in ammonium halide fluxes at high pressures." Applied Physics Letters 116, no. 12 (2020): 123102. http://dx.doi.org/10.1063/1.5140856.

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6

Dib, Eddy, Bruno Alonso, and Tzonka Mineva. "DFT-D Study of14N Nuclear Quadrupolar Interactions in Tetra-n-alkyl Ammonium Halide Crystals." Journal of Physical Chemistry A 118, no. 19 (2014): 3525–33. http://dx.doi.org/10.1021/jp502858n.

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7

Bock, Hans, та Sven Holl. "Wechselwirkungen in Molekülkristallen, 180 [1, 2]. σ-Donator/Akzeptor-Komplexe {S(CI)4···X⊖ }(X⊖ = I⊖ , SCN⊖ ) von Tetraiodthiophen in Tetra(n-butyl)ammoniumhalogenid-Salzen/Interaction in Molecular Crystals, 180 [1, 2]. -Donor/Acceptor Complexes {S(CI)4···X⊖} (X⊖= I⊖, SCN⊖ of Tetraiodothiophene in Tetra(n-butyl)ammonium Halide Salts". Zeitschrift für Naturforschung B 57, № 8 (2002): 835–42. http://dx.doi.org/10.1515/znb-2002-0801.

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Two donor/acceptor complexes between halide anion donors and the tetraiodothiophene acceptor with tetra(n-butyl)ammonium countercations, {(H9C4)4N⊕X⊖···(IC)4Sg (X⊖ = I⊖, SCN⊖) could be crystallized from acetone solutions of the components R4N⊕X$ and (IC)4S by using low-gradient techniques. Low temperature structural studies revealed that the molecule packing motifs are layers of halide anion/tetraiodothiophene patterns penetrated each by one of the four R4N⊕ n-butyl chains. The structure discussion emphasizes observed regularities such as the preferred coordination X⊖···I by the polyiodo accep

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Fillafer, Nicole, Tobias Seewald, Lukas Schmidt-Mende, and Sebastian Polarz. "Interfacial charge transfer processes in 2D and 3D semiconducting hybrid perovskites: azobenzene as photoswitchable ligand." Beilstein Journal of Nanotechnology 11 (March 17, 2020): 466–79. http://dx.doi.org/10.3762/bjnano.11.38.

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In the vast majority of studies on semiconductor particles ligands or capping agents are used that bind to the surface of the particles covering them with an electrically insulating shell. Since the transport of charge carriers and/or energy across interfaces is desirable for a variety of applications, the use of π-conjugated ligands becomes increasingly interesting. Among them are compounds that react to external stimuli. Molecular switches in particular are fascinating because the properties of the interfaces can be potentially adjusted as required. However, there is debate about how the pro

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Bock, Hans, та Sven Holl. "Wechselwirkungen in Molekülkristallen, 179 [1, 2]. σ-Donator/Akzeptor-Komplexe {I2C=CI2···X⊖ } (X⊖ = Cl⊖ , Br⊖ , I⊖ , SCN⊖ ) von Tetraiodethen in Tetra(n-butyl)ammoniumhalogenid-Salzen / Interaction in Molecular Crystals, 179 [1, 2]. σ-Donor/Acceptor Complexes {I2C=CI2···X⊖} (X⊖= Cl⊖, Br⊖, I⊖, SCN⊖) of Tetraiodoethene in Tetra(n-butyl)ammonium Halide Salts". Zeitschrift für Naturforschung B 57, № 7 (2002): 713–25. http://dx.doi.org/10.1515/znb-2002-0701.

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Four donor/acceptor complexes between halide anion donors and the tetraiodoethene acceptor molecule with tetra(n-butyl)ammoniumcountercations, {(H9C4)4N⊕X⊖···I2C=CI2)} (X⊖ = Cl⊖, Br⊖, I⊖, SCN⊖) could be crystallized from acetone solutions of the components R4N⊕X⊖ and I2C=CI2 by using low gradient techniques, and their structures determined at low temperature. Their molecule packing motif are layers of halide anion/tetraiodoethene patterns, which are penetrated by one of the four R4N⊕ n-butyl chains. The structure comparison, including analogous ones from an extensive Cambridge Structural Datab

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10

Varadwaj, Arpita, Pradeep R. Varadwaj, Helder M. Marques, and Koichi Yamashita. "The Pnictogen Bond, Together with Other Non-Covalent Interactions, in the Rational Design of One-, Two- and Three-Dimensional Organic-Inorganic Hybrid Metal Halide Perovskite Semiconducting Materials, and Beyond." International Journal of Molecular Sciences 23, no. 15 (2022): 8816. http://dx.doi.org/10.3390/ijms23158816.

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The pnictogen bond, a somewhat overlooked supramolecular chemical synthon known since the middle of the last century, is one of the promising types of non-covalent interactions yet to be fully understood by recognizing and exploiting its properties for the rational design of novel functional materials. Its bonding modes, energy profiles, vibrational structures and charge density topologies, among others, have yet to be comprehensively delineated, both theoretically and experimentally. In this overview, attention is largely centered on the nature of nitrogen-centered pnictogen bonds found in or

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11

Müller, Matthias, and Magnus R. Buchner. "Preparation and crystal structures of the beryllium ammines [Be(NH3)4]X2 (X = Br, I, CN, SCN, N3) and Be(NH3)2X'2 (X' = Cl, Br, I)." Chemical Communications 55, no. 91 (2019): 13649–52. http://dx.doi.org/10.1039/c9cc07712j.

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12

Hasegawa, Akio, Chien-Yu Chen, Tomoya Nakamura, Minh Anh Truong, Richard Murdey, and Atsushi Wakamiya. "Synthesis of (9-Triptycyl)Tin Halides for Application in Perovskite Solar Cells." ECS Meeting Abstracts MA2024-02, no. 59 (2024): 4004. https://doi.org/10.1149/ma2024-02594004mtgabs.

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Solar cells using ABX3-type perovskite semiconductors are attracting attention due to their high photoelectric conversion efficiency. However, since most of them use lead (Pb), there is a need to develop Pb-free perovskite solar cells from the viewpoint of environmental impact. Perovskites using tin (Sn) have shown promise as an alternative material for Pb-based perovskites, but many challenges remain in achieving high performance because Sn2+ is more susceptible to oxidation than Pb2+. We have previously improved the quality of Sn-based perovskite films by scavenging the Sn4+ ions1 and applyi

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13

Mann, S., and M. Jansen. "Ein neuer Zugang zu ionischen Thionylimiden. Einkristallstruktur von N(CH3)4NSO / A New Access to Ionic Thionylimides. Single Crystal Structure of N(CH3)4NSO." Zeitschrift für Naturforschung B 49, no. 11 (1994): 1503–6. http://dx.doi.org/10.1515/znb-1994-1109.

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AbstractSingle crystals of N(CH3)4NSO have been prepared via ion exchange from RbNSO or CsNSO and tetraalkylammonium halides in liquid ammonia and investigated by X-ray single crystal techniques (I4̅, a = 1137.6(1), c = 1134.9(2) pm, Z = 8, T = -100 °C). The crystal structure of N(CH3)4NSO is related to the CsCl-type of structure. Using the same preparative route NMe3BzNSO has been obtained. Its lattice powder data (orthorhombic primitive; a = 896.3(2), b = 1235.4(3), c = 1070.7(4) pm).

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14

Katayama, Tetsuro, and Akihiro Furube. "(Invited) Ultrafast Carrier Dynamics in a Quasi-Two-Dimensional Perovskite Crystal By Femtosecond Transient Absorption Microscopy." ECS Meeting Abstracts MA2025-01, no. 16 (2025): 1190. https://doi.org/10.1149/ma2025-01161190mtgabs.

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The phenomenon of superfluorescence using photoexcitation followed by induced synchronization of the dipoles is important not only from the fundamental viewpoint of understanding the interaction between light and matter but also from the applied viewpoint of realizing the high efficient light sources. Organic-inorganic lead halide perovskite materials have various attractive properties not only for solar cells[1] but also for LED and nanoscale lasers because of their wavelength tunability and low lasing threshold. Such an efficient lasing is indispensable for their applications, and the essent

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15

Borisova, Yu G., Sh Sh Dzhumaev, R. M. Sultanova, G. Z. Raskil’dina, and S. S. Zlotskii. "Synthesis and anticorrosive activity of tert-amines containing cycloacetal or gem-dichlorocyclopropane fragments and quaternary ammonium salts on their basis." Fine Chemical Technologies 20, no. 3 (2025): 193–202. https://doi.org/10.32362/2410-6593-2025-20-3-193-202.

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Objectives. The work set out to synthesize tertiary amines comprising derivatives of morpholine and piperidine containing a 1,3-dioxolane or gem-dichlorocyclopropane fragment, as well as quaternary ammonium salts based on them. In order to determine the process conditions (duration and temperature of the reaction) under which the maximum possible yield of the target quaternary ammonium salts is achieved, the effect of the halide structure on the yield of tert-amines and their subsequent salts was evaluated. The study also aimed to establish the structural and spatial structure of the obtained

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16

Katayama, Tetsuro, and Akihiro Furube. "Observation of Nonlinear Emission Dynamics in a Quasi-Two-Dimensional Perovskite Crystal By Femtosecond Transient Absorption Microscopy." ECS Meeting Abstracts MA2024-02, no. 52 (2024): 4875. https://doi.org/10.1149/ma2024-02524875mtgabs.

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INTRODUCTION The phenomenon of superfluorescence using photoexcitation followed by induced synchronization of the dipoles is important not only from the fundamental viewpoint of understanding the interaction between light and matter but also from the applied viewpoint of realizing the miniaturization of light sources. Organic-inorganic lead halide perovskite materials have various attractive properties not only for solar cells but also for LED and nanoscale lasers because of their wavelength tunability and low lasing threshold. Such an efficient lasing is indispensable for their applications,

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17

Mohammed Mahdi, Wadah, and Aref S. Baron. "Preparation and Characterization of Organic Inorganic Hybrid MAPbI2Br Perovskite." Journal of Kufa-Physics 13, no. 02 (2022): 1–8. http://dx.doi.org/10.31257/2018/jkp/2021/130201.

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In this work, perovskite compounds were prepared and studied by using chemical methods for methyl ammonium halide MABr and lead halide PbI2. The main objective of the study is to successfully prepare new types of perovskites using the one-step method by changing the weight ratios of lead halide PbI2 in a fixed weight ratio of methyl ammonium bromide MABr, where they were classified into samples P1 which represents MABr/PbI2 weight ratios (0.22:0.39)g, P4 which represents MABr/PbI2 weight ratios (0.22:0.59)g and P7 which represents MABr/PbI2 weight ratios (0.22:0.79)g and the impact of this cha

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18

Gieren, Alfred, and Michail Kokkinidis. "Structure Investigations of Agonists of the Natural Neurotransmitter Acetylcholine, V [1]. Structure-Activity Correlations for Cholinergic Stimulants Derived from Crystal Structures of Their Halides." Zeitschrift für Naturforschung C 41, no. 5-6 (1986): 627–40. http://dx.doi.org/10.1515/znc-1986-5-622.

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General features of crystal structures of halide salts of cholinergic stimulants can be interpreted in terms of substrate-receptor interactions. The monoatomic counterions in the crystal structures are discussed as models for the binding site of the receptor with respect to the ammonium group of the cholinergic neurotransmitters. In the crystal structures the anions occupy the tetrahedral faces of the quaternary trimethylammonio methyl or related groups in a specific geometry. Crystallographic and pharmacological evidence indicates that these groups should preferentially interact with the rece

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19

Woidy, Patrick, Antti J. Karttunen, Thomas G. Müller, and Florian Kraus. "The Unusual Coordination Sphere in the Octaammine Calcium(II) Ions of [Ca(NH3)8]Br2 and [Ca(NH3)8]I2 and the Thermal Decomposition of the Iodide to [Ca(NH3)6]I2." Zeitschrift für Naturforschung B 69, no. 11-12 (2014): 1141–48. http://dx.doi.org/10.5560/znb.2014-4134.

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We report on the synthesis and crystal structure of the octaammine calcium(II) halides [Ca(NH3)8]Br2, and [Ca(NH3)8]I2, which were synthesized by the reaction of the respective calcium( II) halides with dry liquid ammonia. The compounds form colorless crystals which crystallize isotypically at 123 K with Z = 4 in the orthorhombic space group Pnma with a = 12:0478(3), b = 7:4406(2), c = 15:7216(4) Å, V = 1409:33(6) Å3 for the bromide, and a = 12:1113(4), b = 7:7706(3), c = 16:7145(6) Å, V = 1573:0(1) Å3 for the iodide. Instead of the expected tetragonal antiprism for the eightfold-coordinated C

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20

Awano, T., and T. Matsuyama. "Color centers in mixed crystals of alkali silver halides and ammonium silver halides." Radiation Effects and Defects in Solids 134, no. 1-4 (1995): 389–93. http://dx.doi.org/10.1080/10420159508227255.

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21

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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22

Jaroszynski, Piotr, Michal Dabrowski, Petro Sadovy, Michal Bockowski, Robert Czernecki, and Tomasz Sochacki. "On Morphology of Aluminum–Gallium Nitride Layers Grown by Halide Vapor Phase Epitaxy: The Role of Total Reactants’ Pressure and Ammonia Flow Rate." Materials 17, no. 14 (2024): 3446. http://dx.doi.org/10.3390/ma17143446.

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The focus of this study was the investigation of how the total pressure of reactants and ammonia flow rate influence the growth morphology of aluminum–gallium nitride layers crystallized by Halide Vapor Phase Epitaxy. It was established how these two critical parameters change the supersaturation levels of gallium and aluminum in the growth zone, and subsequently the morphology of the produced layers. A halide vapor phase epitaxy reactor built in-house was used, allowing for precise control over the growth conditions. Results demonstrate that both total pressure and ammonia flow rate significa

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23

Knop, Osvald, Wolfgang J. Westerhaus, Michael Falk, and Werner Massa. "Infrared spectra of the ammonium ion in crystals. Part XIV. Hydrogen bonding and orientation of the ammonium ion in fluorides, with observations on the transition temperatures in cubic cryolite, elpasolite, and perovskite halides." Canadian Journal of Chemistry 63, no. 12 (1985): 3328–53. http://dx.doi.org/10.1139/v85-551.

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The ir spectra of the isotopic probe ion NH3D+ have been used to obtain information about the symmetry, orientation, and hydrogen-bonding involvement of the ammonium ion, between 10 K and room temperature, in NH4F, NH4HF2, (NH4)2[Cr(H2O)6]F5, NH4PF6, (NH4)3SiF7, the elpasolites (NH4)2BFeF6 (B = Na, K) and CS2NH4MF6 (M = Fe, Al), and the cryolites (NH4)3MF6 (M = Al, Cr, Fe). Several of these fluorides exhibit low-temperature transitions, some of which are evident in the probe-ion spectra. It is shown that relating the isotopically isolated ND stretching and bending frequencies to the [Formula:

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Johnston, Dean H., and Ikponmwosa Agho. "Crystal structures and hydrogen-bonding analysis of a series of solvated ammonium salts of molybdenum(II) chloride clusters." Acta Crystallographica Section E Crystallographic Communications 75, no. 11 (2019): 1705–11. http://dx.doi.org/10.1107/s205698901901380x.

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Charge-assisted hydrogen bonding plays a significant role in the crystal structures of solvates of ionic compounds, especially when the cation or cations are primary ammonium salts. We report the crystal structures of four ammonium salts of molybdenum halide cluster solvates where we observe significant hydrogen bonding between the solvent molecules and cations. The crystal structures of bis(anilinium) octa-μ3-chlorido-hexachlorido-octahedro-hexamolybdate N,N-dimethylformamide tetrasolvate, (C6H8N)2[Mo6Cl8Cl6]·4C3H7NO, (I), p-phenylenediammonium octa-μ3-chlorido-hexachlorido-octahedro-hexamoly

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25

Viger-Gravel, Jasmine, Ilia Korobkov, and David L. Bryce. "Crystal structure of tetraethylammonium chloride 3,4,5,6-tetrafluoro-1,2-diiodobenzene." Acta Crystallographica Section E Crystallographic Communications 71, no. 5 (2015): o319—o320. http://dx.doi.org/10.1107/s205698901500732x.

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Equimolar quantities of tetraethylammonium chloride (Et4NCl) and 3,4,5,6-tetrafluoro-1,2-diiodobenzene (o-DITFB oro-C6F4I2) have been co-crystallized in a solution of dichloromethane yielding a pure halogen-bonded compound, 3,4,5,6-tetrafluoro-1,2-diiodobenzene–tetraethyl ammonium chloride (2/1), Et4N+·Cl−·2C6F4I2, in the form of translucent needles. [(Et4NCl)(o-C6F4I2)2] packs in theC2/cspace group. The asymmetric unit includes one molecule of DITFB, one Et4N+cation located on a twofold rotation axis, and one chloride anion also located on a twofold rotation symmetry axis. This compound has a

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Lee, Yeo Kyung, Jonghyeok Yun, Junhee Kang, and Jong-Won Lee. "Phase-Structure-Property Relationships of Halide Coating Materials for Solid Composite Electrodes." ECS Meeting Abstracts MA2024-02, no. 8 (2024): 1173. https://doi.org/10.1149/ma2024-0281173mtgabs.

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Lithium-ion batteries (LIBs) have played a pivotal role in advancing energy storage technologies, enabling high-demand applications such as electric vehicles and renewable energy storage systems. Despite their widespread use, LIBs face significant challenges in terms of energy density and intrinsic safety issues. These challenges have spurred interest in all-solid-state batteries (ASSBs), which utilize solid electrolytes (SEs) to offer safe alternatives to conventional liquid electrolyte-based LIBs. Among the various types of SEs explored to date, halide SEs exhibit improved compatibility with

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Rudel, Stefan S., Sebastian A. Baer, Patrick Woidy, et al. "Recent advances in the chemistry of uranium halides in anhydrous ammonia." Zeitschrift für Kristallographie - Crystalline Materials 233, no. 12 (2018): 817–44. http://dx.doi.org/10.1515/zkri-2018-2066.

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Abstract This article presents an overview of recent advancements in the field of uranium chemistry, paying special attention to the preparation of starting materials and to the chemistry of uranium halides in liquid ammonia. Where suitable, insights into the chemistry of thorium are also presented. Herein, we report upon the crystal structures of several ammine complexes as well as their deprotonation products. Specific examples of hydrolysis products in liquid ammonia are showcased. Additionally, advancements in the preparation of uranium cyanides are presented.

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Ben Rhaiem, Tarek, and Habib Boughzala. "Crystal structure of a new hybrid antimony–halide-based compound for possible non-linear optical applications." Acta Crystallographica Section E Crystallographic Communications 71, no. 5 (2015): 498–501. http://dx.doi.org/10.1107/s2056989015007379.

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The hybrid title compound,catena-poly[[[bis(1,4-diazoniabicyclo[2.2.2]octane) [tetraachloridoantimonate(III)]-μ-chlorido-[tetrachloridoantimonate(III)]-μ-chlorido]] monohydrate], {(C6H14N2)2[Sb2Cl10]·H2O}n, is self-assembled into alternating organic and inorganic layers parallel to thebcplane. The anionic inorganic layer consists of infinite zigzag chains of corner-sharing [SbCl6]3−octahedra running along thebaxis. The organic part is made up of 1,4-diazoniabicyclo[2.2.2]octane dications (dabcoH22+). The water molecules in the structure connect inorganic and organic layers. Hydrogen-bonding in

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29

McNulty, Jason A., and Philip Lightfoot. "Structural chemistry of layered lead halide perovskites containing single octahedral layers." IUCrJ 8, no. 4 (2021): 485–513. http://dx.doi.org/10.1107/s2052252521005418.

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We present a comprehensive review of the structural chemistry of hybrid lead halides of stoichiometry APbX 4, A 2PbX4 or A A′PbX 4, where A and A′ are organic ammonium cations and X = Cl, Br or I. These compounds may be considered as layered perovskites, containing isolated, infinite layers of corner-sharing PbX 4 octahedra separated by the organic species. First, over 250 crystal structures were extracted from the CCDC and classified in terms of unit-cell metrics and crystal symmetry. Symmetry mode analysis was then used to identify the nature of key structural distortions of the [PbX 4]∞ lay

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30

Ho, I.-Hsiu, Yi-Jou Huang, Cheng-En Cai, Bo-Tau Liu, Tzong-Ming Wu, and Rong-Ho Lee. "Enhanced Photovoltaic Performance of Inverted Perovskite Solar Cells through Surface Modification of a NiOx-Based Hole-Transporting Layer with Quaternary Ammonium Halide–Containing Cellulose Derivatives." Polymers 15, no. 2 (2023): 437. http://dx.doi.org/10.3390/polym15020437.

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In this study, we positioned three quaternary ammonium halide-containing cellulose derivatives (PQF, PQCl, PQBr) as interfacial modification layers between the nickel oxide (NiOx) and methylammonium lead iodide (MAPbI3) layers of inverted perovskite solar cells (PVSCs). Inserting PQCl between the NiOx and MAPbI3 layers improved the interfacial contact, promoted the crystal growth, and passivated the interface and crystal defects, thereby resulting in MAPbI3 layers having larger crystal grains, better crystal quality, and lower surface roughness. Accordingly, the photovoltaic (PV) properties of

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31

Soe, Chan Myae Myae, G. P. Nagabhushana, Radha Shivaramaiah, et al. "Structural and thermodynamic limits of layer thickness in 2D halide perovskites." Proceedings of the National Academy of Sciences 116, no. 1 (2018): 58–66. http://dx.doi.org/10.1073/pnas.1811006115.

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In the fast-evolving field of halide perovskite semiconductors, the 2D perovskites (A′)2(A)n−1MnX3n+1 [where A = Cs+, CH3NH3+, HC(NH2)2+; A′ = ammonium cation acting as spacer; M = Ge2+, Sn2+, Pb2+; and X = Cl−, Br−, I−] have recently made a critical entry. The n value defines the thickness of the 2D layers, which controls the optical and electronic properties. The 2D perovskites have demonstrated preliminary optoelectronic device lifetime superior to their 3D counterparts. They have also attracted fundamental interest as solution-processed quantum wells with structural and physical properties

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32

Zinke, Julian, Clemens Bruhn та Ulrich Siemeling. "Ammonium and Phosphonium Salts Containing Monoanionic Iron(II) Half-Sandwich Complexes [Fe(η5-Cp*)X2]− (X = Cl − I)". Inorganics 11, № 11 (2023): 437. http://dx.doi.org/10.3390/inorganics11110437.

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Half-sandwich iron(II) dihalido complexes of the type [Fe(η5-Cp’)X2]− (Cp’ = C5H5 or substituted cyclopentadienyl) which are thermally stable at room temperature are extremely scarce, being limited to congeners containing the bulky C5H2-1,2,4-tBu3 ligand. We extended this to homologues [Fe(η5-Cp*)X2]− (X = Cl, Br, I) containing the particularly popular C5Me5 (Cp*) ligand. Corresponding ionic compounds ER4[Fe(η5-Cp*)X2] are easily accessible from FeX2, MCp* (M = Li, K) and a suitable halide source R4EX (E = N, P) in THF. Despite their high sensitivity towards air and moisture, the new compounds

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C. Kusumawardani and J. Ikhsan. "THE SYNTHESIS OF METHYLAMMONIUM LEAD IODIDE ON MESOPORE TiO2 THIN FILM APPLYING OSTWALD RIPENING PROCESS UNDER AMBIENT CONDITION." RASAYAN Journal of Chemistry 15, no. 03 (2022): 1678–85. http://dx.doi.org/10.31788/rjc.2022.1536890.

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Organometallic halide-based perovskite solar cells have played a significant role in the development of photovoltaic technology. The synthesis of the perovskite usually needs specific atmospheres, especially controlled humidity. Here, we demonstrate the synthesis of compact methylammonium lead iodide perovskite (MAPbI3) on TiO2 under ambient conditions through one and two-step spin-coating deposition methods, which both resulted in an unconverted PbI2 on the films. The two-step method provided a higher amount of PbI2 regarding the reaction of methyl ammonium iodide (MAI) with an outer layer of

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Li, Hao-Hong, Zhi-Rong Chen, Liang-Qia Guo, et al. "Synthesis, Characterization, and Electronic Structures of Organically Templated Lead Halides with One- and Two-Dimensional Hybrid Structures, [(nbq)(PbI3)]n and {[(CH3)3NC2H4N(CH3)3]3(Pb6I18)}n." Australian Journal of Chemistry 60, no. 8 (2007): 595. http://dx.doi.org/10.1071/ch07003.

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Two new organically templated lead(ii) iodide complexes, [(nbq)(PbI3)]n 1 and {[(CH3)3NC2H4N(CH3)3]3(Pb6I18)}n 2, have been synthesized in the presence of aromatic and aliphatic quaternary ammonium compounds, N-(n-butyl)quinolinium (nbq+) and [(CH3)3NC2H4N(CH3)3]2+, respectively, acting as structure-directing agents. Both 1 and 2 consist of uncoordinated structure-directing agents and inorganic moieties bound to the organic structure-directing agents. In 1, an inorganic (PbI3–)n one-dimensional polyanion chain is built up by face-sharing of distorted PbI6 tetrahedra. The inorganic framework of

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Kuz'menok, N. M., S. G. Mikhalyonok, А. S. Arol, et al. "Synthesis of Organotriphenylphosphonium Halides, Quaternary Ammonium Salts and Study of their Application as Surfactants Soluble in Liquid Crystals." Liquid Crystals and their Application 20, no. 1 (2020): 6–18. http://dx.doi.org/10.18083/lcappl.2020.1.6.

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Chukanov, Nikita V., Natalia V. Zubkova, Gerhard Möhn, et al. "Triazolite, NaCu2(N3C2H2)2(NH3)2Cl3·4H2O, a new mineral species containing 1,2,4-triazolate anion, from a guano deposit at Pabellón de Pica, Iquique Province, Chile." Mineralogical Magazine 82, no. 4 (2018): 1007–14. http://dx.doi.org/10.1180/minmag.2017.081.088.

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ABSTRACTThe new mineral triazolite is found in a guano deposit located on the Pabellón de Pica Mountain, Iquique Province, Tarapacá Region, Chile. Associated minerals are salammoniac, halite, dittmarite, joanneumite, chanabayaite, nitratine, natroxalate and möhnite. Triazolite occurs as deep blue prismatic crystals up to 0.1 mm × 0.15 mm × 0.75 mm and their radial aggregates up to 1.5 mm across. The mineral is brittle. Its Mohs hardness is 2.Dcalc= 2.028 g cm–3. The infrared spectrum shows the presence of 1,2,4-triazolate anion and ammonia and water molecules. Triazolite is optically biaxial (

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Li, Q., and T. C. W. Mak. "New Inclusion Compounds of Selenourea with Tetraethyl- and Tetra-n-propylammonium Halides." Acta Crystallographica Section B Structural Science 53, no. 2 (1997): 262–71. http://dx.doi.org/10.1107/s010876819601292x.

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Air-sensitive selenourea inclusion complexes tetraethylammonium chloride–selenourea (1/2), (C2H5)4N+.C1−.2[(NH2)2CSe] (1), tetra-n-propyl-ammonium chloride–selenourea (1/3), (n-C3H7)4N+.C1−.3[(NH2)2CSe] (2), tetra-n-propylammonium bromide–selenourea (1/3), (n-C3H7)4N+.Br−.3[(NH2)2CSe] (3), and tetra-n-propylammonium iodide–selenourea (1/1), (n-C3H7)4N+.I−.(NH2)2CSe (4), have been prepared and characterized by X-ray crystallography. Crystal data, Mo Kα radiation: (1), space group P21/n, Z = 4, a = 8.768 (5), b = 11.036 (6), c = 19.79 (1) Å, β = 96.92 (1)°, R F = 0.055 for 1468 observed data; (2

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Natkaniec, I., L. S. Smirnov, and L. A. Shuvalov. "Neutron-scattering study of the dynamics of ammonium in different phases of halides of K1−x (NH4)xHal mixed crystals." Crystallography Reports 50, no. 2 (2005): 254–61. http://dx.doi.org/10.1134/1.1887899.

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Abdallah, David J., Robert E. Bachman, Jerry Perlstein, and Richard G. Weiss. "Crystal Structures of SymmetricalTetra-n-Alkyl Ammonium and Phosphonium Halides. Dissection of Competing Interactions Leading to “Biradial” and “Tetraradial” Shapes." Journal of Physical Chemistry B 103, no. 43 (1999): 9269–78. http://dx.doi.org/10.1021/jp9910338.

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Alsoltani, Karrar, and Khalid H. Harbbi. "Effect of the Synthesis Time on Structural Properties of Copper Oxide." Ibn AL-Haitham Journal For Pure and Applied Sciences 36, no. 2 (2023): 181–90. http://dx.doi.org/10.30526/36.2.3024.

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The structural properties of the CuO nanopowder oxide prepared reflux techniquewithout any templates or surfactant, using copper nitrate hydrate (Cu(NO)3 3H2O) in deionizedwater with aqueous ammonia solution are reported. The Xrd analysis data and processing in originpro program used to get FWHM and integral width to study the effect of different synthesis timeswas studied on the structural properties. It was found that values of crystal sizes are 17.274nm,17.746nm, and 18.560nm, the size of nanoparticles is determined by Halder-Wagner, and 15.796nm, 15.851nm, and 16.52nm, were calculated by S

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Dou, Shi-qi, Hartmut Fuess, Helmut Paulus, and Alarich Weiss. "Halogen NQR and Crystal Structure of Ammonium Halides (R-NH3)+X- and (X–) (+H3NR´NH3+) (X–). R = (HOCH2)3C, R´ = CH2C(CH3)2CH2; X = I,Br." Zeitschrift für Naturforschung A 49, no. 1-2 (1994): 174–84. http://dx.doi.org/10.1515/zna-1994-1-227.

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AbstractThe 127I-NQR of(HOCH2)3CNH3+ I- was determined in the range 77 ≤ T/K ≤ 310. At T = 310 K the NQR signal fades out (Tm = 463 K). The 127I spectrum ( T =77 K.): v1 =29.195 MHz, v2 = 14.597 MHz, η(121l)=0, e QΦzz h-1 (127I) = 97.315 MHz, is in agreement with the crystal structure. The 127I NQR spectrum of 1,3-diammonium-2,2-dimethylpropane diiodide, (H3NCH2C(CH3)2CH2NH3)2+ ·2I- , is a quartet within the whole temperature range investigated, and the lines correspond to two crystallographically independent iodines: Space group P21/c, Z = 4, a = 731.2(3) pm, b = 689.0(3) pm, c = 2255.1(8) pm

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Ishihara, Hideta, Shi-qi Dou, Keizo Horiuchi, et al. "Isolated versus Condensed Anion Structure: the Influence of the Cation Size and Hydrogen Bond on Structure and Phase Transition in MX42- Complex Salts. 2,2-Dimethyl-1,3-propanediammonium Tetrabromocadmate(II) Monohydrate, Dimethylammonium Tetrabromozincate(II), and Dimethylammonium Tetrabromocadmate(II)." Zeitschrift für Naturforschung A 51, no. 9 (1996): 1027–36. http://dx.doi.org/10.1515/zna-1996-0909.

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Abstract In the course of work on the anion condensation of Cd and Zn halides, the crystal structures and 79,81 Br NQR spectra of 2,2-dimethyl-1,3-propanediammonium tetrabromocadmate(II) monohydrate (1) and dimethylammonium tetrabromozincate(II) (2), and 79-81 Br NQR spectra of dimethyl-ammonium tetrabromocadmate(II) (3) have been studied. An isolated [CdBr4]2- ion of the salt [H3NCH2C(CH3)2CH2NH3 ]CdBr4 • H2O (1) is formed, with polar orthorhombic space group Pbc21, Z = 4, a = 645.5(3), b = 1628.3(8), c -1389.5(6) pm. [(CH3)2 NH2 ]2ZnBr4 (2) has also an isolated anion lattice, with monoclinic

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Parfenyuk, Vladimir I., Mariya V. Tesakova, Mitar Lutovac, et al. "SURFACE PROPERTIES OF TITANIUM ALLOY VT 6 AFTER PLASMA ELECTROLYTIC TREATMENT." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 61, no. 3 (2018): 58. http://dx.doi.org/10.6060/tcct.20186103.5705.

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Surface modification of titanium alloy VT 6 in aqueous solution containing 5 wt% of ammonium hydrate and 10 wt% of ammonium chloride in a temperature range of 650- 900 ºC by plasma electrolitic treatment was carried out. Characterization of surface layers of the alloy after plasma electrolytic treatment was done by Fourier Transform Infrared spectroscopy (FTIR) and powder X-ray diffraction (XRD). The FTIR spectra were recorded on a spectrometer BrukerVertex80 at room temperature in the range of 7500-350 cm-1. The spectra show the presence of rutile phase on the alloy surface after the plasma e

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McGarvey, Bruce R., Andrzej Ozarowski, Zhigang Tian, and Dennis G. Tuck. "Tin and lead derivatives of a Schiff base – bis(orthoquinone) ligand." Canadian Journal of Chemistry 73, no. 7 (1995): 1213–22. http://dx.doi.org/10.1139/v95-149.

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The condensation of two molecules of 3,5-di-tert-butylcatechol (dbc) with ammonia under oxidizing conditions is believed to proceed via a keto-imine radical. Further condensation, and subsequent reaction with tin(II) or lead(II) halides, yields complexes of identical composition, M[dbqdi]2, where dbqdi is 3,5-di-tert-butyl-1,2-quinone-1-(2-hydroxy-3,5-di-tert-butylphenyl)imine anion; this name is used without prejudice as to the actual structure of the ligand. The two compounds differ in crystallographic and magnetic properties, and ESR measurements show that the tin compound has a triplet gro

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Zhang, Li-Yuan, Jia You, Qian-Wen Li, et al. "Preparation and Photocatalytic Properties of CdS/F–TiO2 Composites." Coatings 9, no. 12 (2019): 824. http://dx.doi.org/10.3390/coatings9120824.

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F–TiO2 was prepared by a simple precipitation method using titanium sulfate as the titanium source, hydrogen fluoride as the fluorine source and ammonia as the precipitant. CdS/F–TiO2 composites were prepared by hydrothermal synthesis of CdS and F–TiO2. The surface morphology, crystal phase composition, ultraviolet absorption band, fluorescence intensity, element composition, valence state, specific surface and pore structure of the samples were characterized by using field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), ultraviolet visible absorption spectrum (UV-Vis-A

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Cimek, Jarosław, Xavier Forestier, Ryszard Stepien, Mariusz Klimczak, and Ryszard Buczynski. "Synthesis conditions of ZBLAN glass for mid-infrared optical components." Photonics Letters of Poland 10, no. 1 (2018): 8. http://dx.doi.org/10.4302/plp.v10i1.804.

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We report on successful synthesis of ZBLAN glass. Different purity of zirconium tetrafluoride used for synthesis and fluorinating agents were analyzed to obtain high optical quality glass. Among fluorinating agents we used ammonium bifluoride, xenon difluoride and sulfur hexafluoride. The best results in form of synthetized glasses have transmission window extending from 0.2 to 8.0 um, which allows to fabricate fibers for mid-infrared applications. Full Text: PDF ReferencesR. Stępień, J. Cimek, D. Pysz, I. Kujawa, M. Klimczak, and R. Buczyński, Soft glasses for photonic crystal fibers and micr

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Tashiro, Shohei. "Helical ammonium halide framework constituting polar conglomerate crystals of 2-ethylanilinium chloride." CrystEngComm, 2025. https://doi.org/10.1039/d4ce01084a.

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Crystal engineering, which periodically aligns supramolecular synthons through intermolecular interactions, is a key technology for creating a variety of functional crystalline materials such as porous, polar, chiral, and elastic/plastic crystals....

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Koketayev, T. A., and A. K. Tussupbekova. "Polymorphic phase transitions and recombination luminescence in ammonium halide crystals." Physical Sciences and Technology 6, no. 2 (2019). http://dx.doi.org/10.26577/phst-2019-2-p10.

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Gassara, Mahdi, Naveen Harindu Hemasiri, Samrana Kazim, Ferdinando Costantino, Houcine Naïli, and Shahzada Ahmad. "Uncovering the Role of Electronic Doping In Lead-free Perovskite (CH3NH3)2CuCl4-xBrx and Solar Cells Fabrication." February 23, 2023. https://doi.org/10.5281/zenodo.7670834.

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Lead halide perovskites are attractive pigments to fabricate solar cells in the laboratory owing to their high power conversion efficiency. However, such materials also possess a high level of toxicity that is carcinogenic for humans and aquatic life due to the presence of Pb. Arguably, this hampers their acceptability for immediate commercialization. Here, we report the synthesis of two-dimensional copper-based perovskite as an environmentally benign alternative to lead-based perovskites. We evaluated their optoelectronic properties and photovoltaic parameters. The (CH<sub>3</sub>NH<sub>3</su

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Gao, Yi-Hong, Dong-Hui Wang, Feng-Xia Hu, et al. "Low pressure reversibly driving colossal barocaloric effect in two-dimensional vdW alkylammonium halides." Nature Communications 15, no. 1 (2024). http://dx.doi.org/10.1038/s41467-024-46248-1.

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AbstractPlastic crystals as barocaloric materials exhibit the large entropy change rivalling freon, however, the limited pressure-sensitivity and large hysteresis of phase transition hinder the colossal barocaloric effect accomplished reversibly at low pressure. Here we report reversible colossal barocaloric effect at low pressure in two-dimensional van-der-Waals alkylammonium halides. Via introducing long carbon chains in ammonium halide plastic crystals, two-dimensional structure forms in (CH3–(CH2)n-1)2NH2X (X: halogen element) with weak interlayer van-der-Waals force, which dictates interl

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