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Bibliografías temáticas / Anions peu coordinants

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Literatura académica sobre el tema "Anions peu coordinants"

Autor: Grafiati

Publicado: 11 de enero de 2025

Última modificación: 31 de julio de 2025

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Artículos de revistas sobre el tema "Anions peu coordinants"

1

Ohse, Lothar, and Wolfgang Brockner. "Schwingungsberechnungen des Hexathiometadiphosphatanions P2S62-." Zeitschrift für Naturforschung A 43, no. 5 (1988): 494–96. http://dx.doi.org/10.1515/zna-1988-0515.

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A normal coordinate analysis for the Hexathiometadiphosphate anion P2S62- was performed, based on a simple initial force field. The force field was refined by adjusting the symmetry force constants to approximate the observed frequencies. The final force field, potential energy distribution (PED) and mean amplitudes of vibration are also given. Based on the normal coordinate analysis a new assignment of the P2S62- frequencies is proposed.

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2

Cyvin, S. J., B. N. Cyvin, C. Wibbelmann, R. Becker, W. Brockner, and M. Parensen. "Synthesis, Vibrational Spectra and Normal Coordinate Analysis of Cesium-Hexathiohypodiphosphate Cs4P2S6." Zeitschrift für Naturforschung A 40, no. 7 (1985): 709–13. http://dx.doi.org/10.1515/zna-1985-0710.

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The title compound has been prepared by elemental synthesis at high temperatures and also by reaction of Na4P2S6 · 6H2O with CsCl in aqueous solution. Both reaction products have closely related vibrational spectra which are assigned on the basis of a P2S64- anion with perturbed D3d symmetry. A normal coordinate analysis has been performed using a force Field with 4 initial force constants. The refined force Field, potential energy distribution (PED), mean amplitudes of vibration and Coriolis coupling constants are given.

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3

Parensen, M., and W. Brockner. "Schwingungsspektren und Normalkoordinatenanalyse des P2Se64–-Anions in den konformeren staggered- und eclipsed-Anordnungen in TL4P2Se6und Na4P2Se6." Zeitschrift für Naturforschung A 41, no. 10 (1986): 1233–37. http://dx.doi.org/10.1515/zna-1986-1010.

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Na4P2Se6 has been prepared by elemental synthesis at high temperatures and characterized by vibrational spectroscopy. The vibrational frequencies of Na4P2Se6 are assigned on the basis of eclipsed P2Se64- conformers with D3h symmetry, those of Tl4P2Se6 on the basis of staggered P2Se64- units with D3d symmetry. A normal coordinate analysis has been performed for both conformers. The refined force field, potential energy distribution (PED), mean amplitudes of vibration an Coriolis coupling constants are given.

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4

Sarkar, Jagannath. "Genomics of Brevibacterium strains reveal adaptations necessary to acclimatize in different marine environments." June 7, 2024. https://doi.org/10.5281/zenodo.13624149.

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<strong>ABSTRACT</strong> Microbes are ubiquitous throughout the seawater and underlying sediment, which covers the vast region of the earth surface. Strains of different genera under the phylum <em>Actinobacteria</em> are ubiquitous all-over different environments of the earth surfaces. A well-studied aerobic genus, <em>Brevibacterium</em>, under the phylum also found to be omnipresent in both marine and terrestrial environments, ranging from coastal to open ocean. Which raise question, whether marine strains are phylogenetically distinct from others or not, and what are the special genomic a

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Tesis sobre el tema "Anions peu coordinants"

1

Azrou, Djamila. "Enhanced reactivity of vinyl cations using extremely weakly coordinating anions." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASF067.

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Les chimistes organiciens sont toujours confrontés à de nouveaux défis, notamment ceux concernant la réactivité d'intermédiaires difficiles à contrôler, tels que les cations vinyliques. Le manque de compréhension concernant l'influence du contre-ion sur leur stabilité et leur réactivité a limité leur utilisation. Ce projet de thèse vise à utiliser des sels métalliques contenant des anions faiblement coordinants pour mieux comprendre ces interactions afin d'élargir leur champ d'applications en catalyse homogène. Dans un premier temps, nous avons étudié la chimie des anions d'indium portant des

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