Articles with "covalency" as a keyword



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Copper oxide/graphitic carbon nitride composite for bisphenol a degradation by boosted peroxymonosulfate activation: Mechanism of Cu-O covalency governs.

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Published in 2021 at "Journal of colloid and interface science"

DOI: 10.1016/j.jcis.2021.06.099

Abstract: Surface structure can govern heterogeneous catalysis, resulting in its critical role in nonradical reactions. Here, we explored whether Cu-O covalency plays a critical role in controlling the inherent properties of copper oxide/graphitic carbon nitride (CuO-CN).… read more here.

Keywords: oxide graphitic; copper oxide; covalency; graphitic carbon ... See more keywords
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Synthesis of Trapen Ligand-Based U(IV) and Th(IV) 2-Phosphaethynolate Complexes and Comparison of Covalency with Corresponding Ti(IV) Analogues.

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Published in 2022 at "Inorganic chemistry"

DOI: 10.1021/acs.inorgchem.2c02263

Abstract: The involvement of the 2-phosphaethynolate anion species with ambident nucleophilic properties serves as an essential protocol for synthesizing oxygen-bound or phosphorus-bound complexes. This work mainly describes the synthesis and characterization of U, Th, and Ti… read more here.

Keywords: synthesis trapen; covalency; phosphaethynolate; phosphaethynolate complexes ... See more keywords

Covalency Competition in the Quadruple Perovskite CdCu3Fe4O12.

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Published in 2017 at "Inorganic chemistry"

DOI: 10.1021/acs.inorgchem.7b01405

Abstract: Cadmium ions (Cd2+) are similar to calcium ions (Ca2+) in size, whereas the Cd2+ ions tend to form covalent bonds with the neighboring anions because of the high electronegativity. The covalent Cd-O bonds affect other… read more here.

Keywords: perovskite cdcu3fe4o12; quadruple perovskite; covalency; covalency competition ... See more keywords
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Uncovering Heavy Actinide Covalency: Implications for Minor Actinide Partitioning.

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Published in 2019 at "Inorganic chemistry"

DOI: 10.1021/acs.inorgchem.8b03358

Abstract: Across the actinide period, the stability of the trivalent oxidation state predominates in the heavy actinides, making their chemical nature close to that of rare earth elements. The resemblance in their chemistry poses difficulties in… read more here.

Keywords: minor actinide; chemistry; covalency; heavy actinide ... See more keywords
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29Si NMR Spectroscopy as a Probe of s- and f-Block Metal(II)-Silanide Bond Covalency.

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Published in 2021 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.1c03236

Abstract: We report the use of 29Si NMR spectroscopy and DFT calculations combined to benchmark the covalency in the chemical bonding of s- and f-block metal-silicon bonds. The complexes [M(SitBu3)2(THF)2(THF)x] (1-M: M = Mg, Ca, Yb,… read more here.

Keywords: nmr spectroscopy; metal; covalency; spectroscopy ... See more keywords
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Actinide covalency measured by pulsed electron paramagnetic resonance spectroscopy.

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Published in 2017 at "Nature chemistry"

DOI: 10.1038/nchem.2692

Abstract: Our knowledge of actinide chemical bonds lags far behind our understanding of the bonding regimes of any other series of elements. This is a major issue given the technological as well as fundamental importance of… read more here.

Keywords: paramagnetic resonance; pulsed electron; electron paramagnetic; covalency ... See more keywords
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The duality of electron localization and covalency in lanthanide and actinide metallocenes†

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Published in 2020 at "Chemical Science"

DOI: 10.1039/c9sc06114b

Abstract: Previous magnetic, spectroscopic, and theoretical studies of cerocene, Ce(C8H8)2, have provided evidence for non-negligible 4f-electron density on Ce and implied that charge transfer from the ligands occurs as a result of covalent bonding. Strong correlations… read more here.

Keywords: electron localization; edge; localization covalency; duality electron ... See more keywords

Covalency in AnCl2 (An = Th-No).

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Published in 2022 at "Dalton transactions"

DOI: 10.1039/d2dt00315e

Abstract: A potential connection has previously been proposed between the emergence of unexpected covalent behaviour in various transcurium complexes and the increasing stability of the +2 oxidation state in the later members of the actinide series.… read more here.

Keywords: covalency ancl2; series; energy; covalency ... See more keywords

Covalency between the uranyl ion and dithiophosphinate by sulfur K-edge X-ray absorption spectroscopy and density functional theory.

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Published in 2022 at "Journal of synchrotron radiation"

DOI: 10.1107/s160057752101198x

Abstract: The dithiophosphinic acids (HS2PR2) have been used for the selective separation of trivalent actinides (AnIII) from lanthanides (LnIII) over the past decades. The substituents on the dithiophosphinic acids dramatically impact the separation performance, but the… read more here.

Keywords: covalency; dithiophosphinic acids; aniii lniii; edge ... See more keywords

Anti-Electrostatic Pi-Hole Bonding: How Covalency Conquers Coulombics

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Published in 2022 at "Molecules"

DOI: 10.3390/molecules27020377

Abstract: Intermolecular bonding attraction at π-bonded centers is often described as “electrostatically driven” and given quasi-classical rationalization in terms of a “pi hole” depletion region in the electrostatic potential. However, we demonstrate here that such bonding… read more here.

Keywords: covalency; hole bonding; anti electrostatic; attraction ... See more keywords