Tag: 477.6473

Multifunctional properties of {Cu^II₂Ln^III₂} systems involving nitrogen-rich nitronyl nitroxide: single-molecule magnet behavior, luminescence, magnetocaloric effects and heat capacity was written by Li, Hongdao;Jing, Pei;Lu, Jiao;Xi, Lu;Wang, Qi;Ding, Lifeng;Wang, Wen-Min;Song, Zhenjun. And the article was included in Dalton Transactions in 2021.Application In Synthesis of copper(ii)hexafluor-2,4-pentanedionate This article mentions the following:

A series of nitrogen-rich nitronyl nitroxide radical PPNIT (1)-based (PPNIT = 2-(1-(pyrazin-2-yl)-1H-pyrazole)-4,4,5,5-tetramethyl-imidazoline-1-oxyl-3-oxide) 3d -4f ring-shaped tetranuclear clusters [Ln₂Cu₂(hfac)₁₀(PPNIT)₂(H₂O)₂]·CHCl₃ (Ln^III = Gd 2, Tb 3, Dy 4; hfac = hexafiuoroacetylacetonate) with multifunctional properties were isolated. The magnetic behavior, luminescence and heat capacity of the 3d -4f complexes were studied, displaying interesting multiple properties of the mol. materials. The Gd derivative shows a magnetocaloric effect with the maximum entropy change (-ΔS_m) of 15.3 J kg^-1 K^-1 at 2 K for ΔH = 70 kOe. The Tb cluster exhibits spin glass behavior and the characteristic fluorescence emission of the Tb^III ion, while the Dy cluster exhibits SMM behavior, and the heat capacity was studied. Notably, in nitronyl nitroxide radical-metal systems, the study of diverse properties is still scarce so far. This work can pave the way towards the synthesis of multifunctional materials that combine SMM behavior, and optical or/and thermodn. properties. In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Application In Synthesis of copper(ii)hexafluor-2,4-pentanedionate).

copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4) belongs to copper catalysts. The applications of Copper-based nanoparticles have received great attention due to the earth-abundant, low toxicity and inexpensive. Due to these characteristics, copper nanoparticles have generated a great deal of interest especially in the field of catalysis. Application In Synthesis of copper(ii)hexafluor-2,4-pentanedionate

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Spin-state-correlated optical properties of copper(IIII)-nitroxide based molecular magnets was written by Barskaya, Irina Yu.;Veber, Sergey L.;Suturina, Elizaveta A.;Sherin, Peter S.;Maryunina, Kseniya Yu.;Artiukhova, Natalia A.;Tretyakov, Evgeny V.;Sagdeev, Renad Z.;Ovcharenko, Victor I.;Gritsan, Nina P.;Fedin, Matvey V.. And the article was included in Dalton Transactions in 2017.Application of 14781-45-4 This article mentions the following:

Mol. magnets based on copper(II) ions and stable nitroxide radicals exhibit promising switchable behavior triggered by a number of external stimuli; however, their spin-state-correlated optical properties vital for photoinduced switching were not profoundly studied to date. Herein, the electronic absorption spectra of single crystals of three representatives of this unique family were studied exptl. and theor. in the visible and near-IR regions. The color of the complexes is mainly determined by optical properties of the nitroxide radicals, whereas the Cu(hfac)₂ fragment contributes to the near-IR range with the intensity smaller by an order of magnitude. The thermochromism of these complexes evident upon thermal spin state switching is mainly caused by a spectral shift of the absorption bands of the nitroxides. The vibrational progression observed in the visible range for single crystals as well as for solutions of pure nitroxides is well reproduced by DFT calculations, where the C-C stretching mode governs the observed progression. The anal. of the spectra of single crystals in the near-IR region reveals changes in the energy and in the intensity of the copper(II) d-d transitions, which are well reproduced by SOC-NEVPT2 calculations and owe to the flip of the Jahn-Teller axis in the coordination environment of copper. Further strategies for designing bidirectional magnetic photoswitches using these appealing compounds are discussed. In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Application of 14781-45-4).

copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4) belongs to copper catalysts. The applications of Copper-based nanoparticles have received great attention due to the earth-abundant, low toxicity and inexpensive. It is clear from the impact copper catalysis has had on organic synthesis that copper should be considered a first line catalyst for many organic reactions.Application of 14781-45-4

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

A novel nitronyl nitroxide and its copper complexes: Synthesis, structures and magnetic properties was written by Yang, Meng;Xie, Shangfang;Liang, Xiaohong;Zhang, Yandie;Dong, Wen. And the article was included in Inorganica Chimica Acta in 2019.Computed Properties of C10H2CuF12O4 This article mentions the following:

A new nitronyl nitroxide NIT-5Im-3Py (1) and its copper complexes [Cu(hfac)₂]₄(NIT-5Im-3Py)₂ (2), [Cu(hfac)₂NIT-5Im-3Py]_n (3) (NIT-5Im-3Py = 2-(5-(1-imidazole)-3-pyridyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide; hfac = hexafluoroacetylacetonate) were successfully synthesized and the mol. structures were elucidated by single-crystal x-ray structural anal. In complex 2, NIT-3Py-5Im acts as bridge ligand to link four Cu(II) ions leading to {Cu₄} complex while complex 3 displays a 1-dimensional-chain structure. Magnetic studies show that antiferromagnetic interactions dominate in complex 2, while there exist strong ferromagnetic interactions between Cu(II) and coordinated NO group in complex 3. In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Computed Properties of C10H2CuF12O4).

copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4) belongs to copper catalysts. The applications of Copper-based nanoparticles have received great attention due to the earth-abundant, low toxicity and inexpensive. It is clear from the impact copper catalysis has had on organic synthesis that copper should be considered a first line catalyst for many organic reactions.Computed Properties of C10H2CuF12O4

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

A new mononuclear terbium and copper cocrystalline nitronyl nitroxide complex: synthesis, structure and magnetic properties was written by Shi, Jian Yun;Ma, Zhi Long;Tian, Li. And the article was included in Journal of Molecular Structure in 2021.Application of 14781-45-4 This article mentions the following:

One 2p-3d-4f multispin complex [Cu(hfac)(4-Me-3-NITtrz)₂][Tb(hfac)₄]·H₂O (1) was 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, I4 space group. The central Cu^II ion is six-coordinated in tensile octahedron configuration finished by two bidentate radical ligands and one bidentate hfac anion, while Tb^III ion exhibited as distorted triangular dodecahedron geometry (D_2d) finished by eight oxygen atoms from four bischelate hfac anions. Magnetic studies show that Cu(II) ion and the NO group are antiferromagnetically coupled with coupling constants of J_Cu-rad = 1.76-1.99 cm^-1, and strong antiferromagnetic exchange interactions between the two intramol. radicals with J_rad-rad = -12.88∼-10.42 cm^-1 exist in 1. In addition, a.c. magnetic susceptibilities were further measured. In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Application of 14781-45-4).

copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4) belongs to copper catalysts. The applications of Copper-based nanoparticles have received great attention due to the earth-abundant, low toxicity and inexpensive. Copper nanoparticles can also catalyze the coupling reaction of nitrogen-containing nucleophiles, phenols, thiols, xanthogenates, selenium ruthenium nucleophiles and the like.Application of 14781-45-4

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Magnetic relaxation in [Ln(hfac)₄]^– anions with [Cu(hfac)-radical]_nⁿ⁺ cation chains as counterions was written by Sun, Juan;Yang, Meng;Xi, Lu;Ma, Yue;Li, Licun. And the article was included in Dalton Transactions in 2018.Product Details of 14781-45-4 This article mentions the following:

Using a new nitronyl nitroxide radical Nit-Ph-PyIm, two novel 3d-4f complexes with the formula {[Ln(hfac)₄]^–[Cu(hfac)(Nit-Ph-PyIm)]⁺}_n (Ln^III = Gd 1, Dy 2) have been isolated (Nit-Ph-PyIm = 2-[4-[2-(2-pyridinyl)-1H-imidazol-1-yl]-phenyl]-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide; hfac = hexafluoroacetylacetonate). Interestingly, for both compounds, there are discrete [Ln(hfac)₄]^– anions while [Cu(hfac)-radical]_nⁿ⁺ chains serve as counter-ions in which the Nit-Ph-PyIm radicals link [Cu(hfac)]⁺ units through their NO groups and imidazolyl pyridine moieties. The [Cu(hfac)(Nit-Ph-PyIm)]⁺ unit is diamagnetic owing to the strong antiferromagnetic coupling between the Cu(II) ion and the equatorially coordinated NO group. Complex 2 shows field-induced slow magnetization relaxation, arising from [Dy(hfac)₄]^– anions that exhibit distorted square-antiprism (D_4d) geometries. In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Product Details of 14781-45-4).

copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4) belongs to copper catalysts. The applications of Copper-based nanoparticles have received great attention due to the earth-abundant, low toxicity and inexpensive. Copper of different valence states can be used to catalyze the coupling reaction, especially the Ullmann coupling reaction. Product Details of 14781-45-4

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

A metal-radical hetero-tri-spin SCM with methyl-pyrazole-nitronyl nitroxide bridges was written by Huang, Xiaohui;Wang, Kang;Han, Jing;Xie, Junfang;Li, Licun;Sutter, Jean-Pascal. And the article was included in Dalton Transactions in 2021.Electric Literature of C10H2CuF12O4 This article mentions the following:

The preparation, crystal structures, and magnetic properties of a family of hetero-tri-spin 1-D coordination polymers with the formula [Ln(hfac)₃Cu(hfac)₂(4-NIT-MePyz)₂] (Ln = Gd, 1, Tb, 2, Dy, 3; hfac = hexafluoroacetylacetonate; 4-NIT-MePyz = 2-{4-(1-methyl)-pyrazolyl}-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) are reported. In these complexes, the 4-NIT-MePyz radical acts as a linker to bridge the CuII and LnIII ions through its pyrazole and aminoxyl groups to form a chain structure. Magnetic properties typical of spin-chains are observed for Dy and Tb derivatives but single-chain magnet (SCM) behavior was evidenced only for the Tb compound which is characterized by an energy gap for demagnetization Δτ/kB of 31 K. In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Electric Literature of C10H2CuF12O4).

copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4) belongs to copper catalysts. Copper catalyst has received great attention owing to the low toxicity and low cost. Copper of different valence states can be used to catalyze the coupling reaction, especially the Ullmann coupling reaction. Electric Literature of C10H2CuF12O4

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Supramolecular heptanuclear Ln-Cu complexes involving nitronyl nitroxide biradicals: structure and magnetic behavior was written by Xi, Lu;Jin, Chao-Yi;Song, Hong-Wei;Wang, Xiao-Tong;Li, Li-Cun;Sutter, Jean-Pascal. And the article was included in Dalton Transactions in 2022.Computed Properties of C10H2CuF12O4 This article mentions the following:

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 NITPh-Tzbis (NITPh-Tzbis = 5-(1,2,4-triazolyl)-1,3-bis(1′-oxyl-3′-oxido-4′,4′,5′,5′-tetramethyl-4,5-hydro-1H-imidazol-2-yl)benzene). These hetero-tri-spin complexes are composed of two biradical-bridged dinuclear [LnCu(hfac)₅(NITPhTzbis)] units and one trinuclear [Ln₂Cu(hfac)₈(NITPhTzbis)₂] unit which form a heptanuclear supramol. structure through π-π interactions. Magnetic susceptibility investigations indicate that ferromagnetic exchange interactions dominate at low temperature for this supramol. system which can be attributed to the Ln-nitroxide exchange and intramol. NIT···NIT coupling mediated by the m-phenylene moiety. The DyCu derivative was found to exhibit a slow magnetic relaxation behavior. In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Computed Properties of C10H2CuF12O4).

copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4) belongs to copper catalysts. The evolution of transition metal catalysts has attained a stage of civilization that authorizes for an extensive scope of chemical bonds formation partners to be combined efficiently. The copper-mediated C-C, C-O, C-N, and C-S bond formation is a part of one oldest reaction, emphasizing the Ullmann cross-coupling reaction.Computed Properties of C10H2CuF12O4

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Copper-catalyzed N-H insertion reactions from sulfoxonium ylides was written by Furniel, Lucas G.;Burtoloso, Antonio C. B.. And the article was included in Tetrahedron in 2020.Synthetic Route of C10H2CuF12O4 This article mentions the following:

The first use of copper(II) as an efficient catalyst for N-H insertion reactions between anilines and α-carbonyl sulfoxonium ylides is described. Products, 39 arylglycine derivatives, were obtained in yields up to 97% employing a simple and fast exptl. procedure. In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Synthetic Route of C10H2CuF12O4).

copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4) belongs to copper catalysts. The applications of Copper-based nanoparticles have received great attention due to the earth-abundant, low toxicity and inexpensive. It is clear from the impact copper catalysis has had on organic synthesis that copper should be considered a first line catalyst for many organic reactions.Synthetic Route of C10H2CuF12O4

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Cu-Ln compounds based on nitronyl nitroxide radicals: synthesis, structure, and magnetic and fluorescence properties was written by Yang, Meng;Sun, Juan;Guo, Jianni;Sun, Guifang;Li, Licun. And the article was included in CrystEngComm in 2016.Computed Properties of C10H2CuF12O4 This article mentions the following:

Three series of nitronyl nitroxide radical 3d-4f compounds, namely, [Ln(hfac)₃Cu(hfac)₂NIT-5Br-3Py]_n (Ln^III = La (1), Pr (2)), [Ln(hfac)₃Cu(hfac)₂NIT-5Br-3Py] (Ln^III = Gd (3), Tb (4), Dy (5)) and [Ln(hfac)₃Cu(hfac)₂(NIT-5Br-3Py)₂]_n (Ln^III = Gd (6), Tb (7), Dy (8); NIT-5Br-3Py = 2-(5-bromo-3-pyridyl)-4,4,5,5-tetramethyl-imidazoline-1-oxyl-3-oxide; hfac = hexafluoroacetylacetonate) have been successfully obtained. Single crystal x-ray crystallog. anal. reveals that complexes 1 and 2 consist of 1D chains built up by Ln(hfac)₃ units bridged by the radical ligands through their NO moieties and the addnl. Cu ions are coordinated to the nitrogen atoms of the radicals. Complexes 3–5 are rare hetero-binuclear Cu-Ln compounds bridged by the nitronyl nitroxide radicals while complexes 6–8 possess one-dimensional chain structures with a repeating [Cu-Rad-Ln-Rad] sequence. DC magnetic studies show ferromagnetic interaction between the Ln^III ion and the coordinated NO group in compounds 3–8. Tb-Cu derivatives (complexes 4 and 7) display frequency dependent ac magnetic susceptibilities, indicating slow magnetic relaxation behavior. The room-temperature photoluminescence spectra of complexes 4 and 7 exhibit strong characteristic emissions in the visible region. In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Computed Properties of C10H2CuF12O4).

copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4) belongs to copper catalysts. The transition metal-catalyzed chemical transformation of organic electrophiles and organometallic reagents has turned up as an exceedingly robust synthetic tool. These ligands enable the reaction promoted in mild condition. The reaction scope has also been greatly expanded, rendering this copper-based cross-coupling attractive for both academia and industry. Computed Properties of C10H2CuF12O4

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Microwave-assisted copper-catalyzed stereoselective ring expansion of three-membered heterocycles with α-diazo-β-dicarbonyl compounds was written by Li, Siqi;Chen, Xingpeng;Xu, Jiaxi. And the article was included in Tetrahedron in 2018.Recommanded Product: 14781-45-4 This article mentions the following:

Microwave-assisted copper-catalyzed stereoselective ring expansions of three-membered heterocycles with α-diazo-β-dicarbonyl compounds were investigated. Reaction of mono-substituted and cis-2-R¹-3-R²-substituted thiiranes [R¹ = H, R² = n-Bu, n-hexyl, PhCH₂CH₂; R¹R² = (CH₂)₄] with α-diazo-β-dicarbonyl compounds R³C(O)C(:N₂)C(O)R⁴ [R³ = Me, R⁴ = MeO, EtO; R³R⁴ = (CH₂)₃, CH₂CMe₂CH₂] generated the corresponding 3-acyl-5,6-dihydro-1,4-oxathiines and trans-3-acyl-5,6-dihydro-1,4-oxathiines I with high stereospecificity through an intramol. SN2 process. In the presence of copper(II) hexafluoroacetylacetonate, mono-substituted and cis-2-R⁵-3-R⁶-substituted oxiranes [R⁵ = H, R⁶ = Ph, PhCH₂, PhCH₂CH₂, PhOCH₂, etc.; R⁵R⁶ = (CH₂)₄, (CH₂)₆] and α-diazo-β-dicarbonyls R⁷C(O)C(N₂)C(O)R⁸ (R⁷ = Me, R⁸ = Me, MeO, EtO, Ph; R⁷ = Ph, R⁸ = EtO) gave rise to 2-acyl-5,6-dihydro-1,4-dioxines and cis-3-acyl-5,6-dihydro-1,4-dioxines II stereoselectively via an intimate ion-pair mechanism. The current method provides a direct and simple strategy in efficient preparation of 3-acyl-5,6-dihydro-1,4-oxathiines and 2-acyl-5,6-dihydro-1,4-dioxines, which are important agents in medicinal and agricultural chem., from readily available thiiranes and oxiranes, resp. In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Recommanded Product: 14781-45-4).

copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4) belongs to copper catalysts. The evolution of transition metal catalysts has attained a stage of civilization that authorizes for an extensive scope of chemical bonds formation partners to be combined efficiently. Copper nanoparticles can catalyze the Ullmann coupling reaction in a wide range of applications.Recommanded Product: 14781-45-4

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”