Articles with "hfac" as a keyword



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A new mononuclear terbium and copper cocrystalline nitronyl nitroxide complex: synthesis, structure and magnetic properties

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Published in 2021 at "Journal of Molecular Structure"

DOI: 10.1016/j.molstruc.2020.129012

Abstract: Abstract One 2p-3d-4f multispin complex [Cu(hfac)(4-Me-3-NITtrz)2][Tb(hfac)4]·H2O (1) has been obtained based on a functionalized nitronyl nitroxide radical 4-Me-3-Nit-trz (in which, 4-Me-3-Nit-trz = 2-[3-(4-methyl-l,2,4-triazolyl)]-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide, hfac = hexafluoroacetylacetone). Complex 1 crystallizes in tetragonal system, I 4 ¯ space group. The central… read more here.

Keywords: nitronyl nitroxide; terbium copper; new mononuclear; structure ... See more keywords

A Manganese (II) Dimer Bearing the Reduced Derivatives of Nitronyl Nitroxides

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Published in 2021 at "Polyhedron"

DOI: 10.1016/j.poly.2021.115427

Abstract: Abstract We report the synthesis, magnetic EPR and conducting properties of a new manganese complex [MnII(hfac)2(IMHPhOPh)]2[MnII(hfac)3](IMH2PhOPh) (1), containing the reduced forms (IMHPhOPh and IMH2PhOPh) of the NIT-PhOPh radical (NIT-PhOPh = 2,4‘-benzoxo-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide). Magnetic susceptibility studies reveal… read more here.

Keywords: mnii hfac; hfac imhphoph; dimer bearing; manganese dimer ... See more keywords

Mechanochemical Syntheses of Ln(hfac)3(H2O)x (Ln = La-Sm, Tb): Isolation of 10-, 9-, and 8-Coordinate Ln(hfac)n Complexes

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Published in 2022 at "Inorganic Chemistry"

DOI: 10.1021/acs.inorgchem.2c01274

Abstract: Volatile lanthanide coordination complexes are critical to the generation of new optical and magnetic materials. One of the most common precursors for preparing volatile lanthanide complexes is the hydrate with the general formula Ln(hfac)3(H2O)x (x… read more here.

Keywords: hfac; syntheses hfac; spectroscopy; h2o isolation ... See more keywords

Heterometallic Molecular and Ionic Isomers

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Published in 2024 at "Inorganic Chemistry"

DOI: 10.1021/acs.inorgchem.4c03849

Abstract: Numerous descriptions of structural isomerism in metal complexes do not list any molecular vs ionic isomers. At the same time, one of the most striking examples of structural isomerism in organic chemistry is molecular urea,… read more here.

Keywords: spectroscopy; chemistry; molecular ionic; acac ... See more keywords

Dinuclear Heteroleptic Erbium Complexes for Improving Molecular-Based Light Upconversion in Solution?

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Published in 2025 at "Inorganic chemistry"

DOI: 10.1021/acs.inorgchem.4c05481

Abstract: In an attempt to boost molecular-based excited-state absorption (ESA) via cross-relaxation (CR), the back-to-back ditridentate polyaromatic 2,2',6,6'-tetrakis(1-methyl-1H-benzo[d]imidazole-2-yl)-4,4'-bipyridine ligand (L4) was reacted with neutral [Ln(hfac)3] lanthanide cargoes (Ln = Y, Eu, and Er and H-hfac =… read more here.

Keywords: dinuclear heteroleptic; molecular based; solution; erbium ... See more keywords

Position Assignment and Oxidation State Recognition of Fe and Co Centers in Heterometallic Mixed-Valent Molecular Precursors for the Low-Temperature Preparation of Target Spinel Oxide Materials.

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Published in 2017 at "Inorganic chemistry"

DOI: 10.1021/acs.inorgchem.7b01032

Abstract: A series of mixed-valent, heterometallic (mixed-transition metal) diketonates that can be utilized as prospective volatile single-source precursors for the low-temperature preparation of MxM'3-xO4 spinel oxide materials is reported. Three iron-cobalt complexes with Fe/Co ratios of… read more here.

Keywords: temperature preparation; low temperature; coii hfac; coii ... See more keywords

Three-Dimensional Supramolecular Architectures with MnII Ions Assembled from Hydrogen Bonding Interactions: Crystal Structures and Antiferromagnetic Properties

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Published in 2022 at "ACS Omega"

DOI: 10.1021/acsomega.1c05285

Abstract: Two novel cocrystal MnII compounds were successfully synthesized. The composition of two kinds crystals correspond to [Mn(hfac)2La2·Mn(hfac)2La(H2O)·Mn(hfac)2(H2O)2] (1) and [Mn(hfac)2Lb2·Mn(hfac)2(H2O)2·0.5(C6H14)] (2) [La = 1,3-bis(1′-oxyl-3′-oxido-4′,4′,5′,5′-tetramethyl-4,5-dihydro-1H-imidazol-2-y1)benzene; Lb = 1-(1′-oxyl-4′,4′,5′,5′-tetramethylimidazolin-2-yl)-3-(1′-oxyl-3′-oxo-4′,4′,5′,5′-tetramethylimidazolin-2-yl)benzene; hfac = hexafluoroacetylacetonato). Surprisingly, the compounds were not… read more here.

Keywords: hfac; mnii ions; architectures mnii; three dimensional ... See more keywords

Modulating the magnetization dynamics in Ln-Cu-Rad hetero-tri-spin complexes through cis/trans coordination of nitronyl nitroxide radicals around the metal center.

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Published in 2021 at "Dalton transactions"

DOI: 10.1039/d1dt00090j

Abstract: Self-assembling the novel nitronyl nitroxide radical NIT-3Py-5-Ph (2-(5-phenyl-3-pyridyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) with Ln(hfac)3·2H2O and Cu(hfac)2 (hfac = hexafluoroacetylacetonate) resulted in two heterometallic complexes with formula [LnCu(hfac)5(NIT-3Py-5-Ph)2] (Ln = Gd 1, Dy 2), in which two NIT-3Py-5-Ph radicals are… read more here.

Keywords: nitronyl nitroxide; nit 3py; 3py 4py; center ... See more keywords

Supramolecular heptanuclear Ln-Cu complexes involving nitronyl nitroxide biradicals: structure and magnetic behavior.

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Published in 2022 at "Dalton transactions"

DOI: 10.1039/d2dt00220e

Abstract: Four novel heptanuclear Ln-Cu complexes with the formula [Ln2Cu(hfac)8(NITPhTzbis)2][LnCu(hfac)5(NITPhTzbis)]2 (LnCu = YCu 1, TbCu 2, DyCu 3 and HoCu 4; hfac = hexafluoroacetylacetonate) were successfully constructed by employing the triazole functionalized nitronyl nitroxide biradical ligand… read more here.

Keywords: hfac; hfac nitphtzbis; structure; supramolecular heptanuclear ... See more keywords

Ferrocenyl-substituted nitronyl nitroxide in the design of one-dimensional magnets.

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Published in 2024 at "Dalton transactions"

DOI: 10.1039/d3dt03858k

Abstract: By the reaction of M(hfac)2 (M = Mn(II), Co(II), Cu(II), and Zn(II); hfac is the hexafluoroacetylacetonate anion) and ferrocenyl-substituted nitronyl nitroxide (L), we succeeded in the synthesis of stable heterospin complexes: mononuclear [Zn(hfac)2L], trinuclear {[Cu(hfac)2]3L2}… read more here.

Keywords: hfac hfac; substituted nitronyl; nitronyl nitroxide; one dimensional ... See more keywords

A Soft-Switching Current-Fed Resonant Inverter for HFAC EV Auxiliary Electrical System

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Published in 2025 at "IEEE Transactions on Transportation Electrification"

DOI: 10.1109/tte.2024.3467918

Abstract: High-frequency alternating current (HFAC) power distribution systems have been widely used for many industrial occasions, including electric vehicles (EVs) received much attention. HF inverters are the core of HFAC system connected to the HFAC bus,… read more here.

Keywords: voltage; system; hfac; resonant inverter ... See more keywords