Category: 18362-64-6

COA of Formula: C9H16O2. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 2,6-Dimethyl-3,5-heptanedione, is researched, Molecular C9H16O2, CAS is 18362-64-6, about Structure and NIR-luminescence of ytterbium(III) beta-diketonate complexes with 5-nitro-1,10-phenanthroline ancillary ligand: assessment of chain length and fluorination impact. Author is Martin-Ramos, Pablo; Pereira da Silva, Pedro S.; Lavin, Victor; Martin, Inocencio R.; Lahoz, Fernando; Chamorro-Posada, Pedro; Ramos Silva, Manuela; Martin-Gil, Jesus.

Seven new tris(β-diketonate)ytterbium(III) complexes with the general formula [Yb(β-diketonate)3(5NO2phen)] [the β-diketone is 4,4,4-trifluoro-1-(2-naphthyl)-1,3-butanedione (1), 4,4,4-trifluoro-1-(2-furyl)-1,3-butanedione (2), 1,1,1-trifluoro-2,4-pentanedione (3), 1,1,1-trifluoro-5,5-dimethyl-2,4-hexanedione (4), 1,1,1,5,5,6,6,7,7,7-decafluoro-2,4-heptanedione (5), 2,4-hexanedione (6) or 2,6-dimethyl-3,5-heptanedione (7), and 5NO2phen = 5-nitro-1,10-phenanthroline] were synthesized and characterized by elemental anal., attenuated total reflectance-FTIR and photoluminescence spectroscopy. Single crystal x-ray structures have been determined for three fluorinated complexes (3-5) and ground state geometries of the other four complexes have been predicted using the Sparkle/PM6 model (1-2, 6-7). These exptl. and semi-empirical structures reveal octacoordination around the Yb3+ ion. Photoluminescence studies and lifetime measurements show that the increase in the fluorinated β-diketonate chain length is associated with a decrease in Yb3+ luminescence intensity of the 2F5/2 → 2F7/2 transition at ∼980 nm and the 2F5/2 excited state lifetime, while the ligand lifetime value remains almost unaffected. Finally, fluorination of the ligands is only advised when the complexes are to be used for co-doping with isostructural Er3+ complexes for optical amplifiers, since it leads to a slight decrease in luminescence intensity for the same β-diketonate chain length.

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Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Polyhedron called Extraction of nickel in the presence of ammonia with β-diketones containing phenyl and alkyl groups, Author is Koshimura, Hideo; Okubo, Teiji, which mentions a compound: 18362-64-6, SMILESS is CC(C)C(CC(C(C)C)=O)=O, Molecular C9H16O2, Recommanded Product: 18362-64-6.

The extraction of Ni chelates with β-diketones containing either alkyl or Ph groups was examined in the absence and in the presence of NH3 in the aqueous solution, in order to define the effect of substituents and the coordinating effect of NH3 on the extraction In the extraction of Ni chelates in the presence of NH3 the extracted species NH3 are [NiA2(NH3)2] (A: β-diketone anion) and NH3 acts both as adduct-forming in the organic phase and as masking reagent in the aqueous phase.

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Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Fackler, John P. Jr.; Mittleman, Martin L.; Weigold, Helmut; Barrow, Gordon M. published an article about the compound: 2,6-Dimethyl-3,5-heptanedione( cas:18362-64-6,SMILESS:CC(C)C(CC(C(C)C)=O)=O ).Quality Control of 2,6-Dimethyl-3,5-heptanedione. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:18362-64-6) through the article.

The uv electronic spectra of several Ni(II) β-ketoenolates in CHCl3 and hydrocarbon solvents are described and are shown to be consistent with the assignment of Cotton and Wise for the about 233- and 268-mμ bands. The vapor uv spectrum of Ni(II) acetylacetonate also shows these bands, as expected for a planar species. The ir spectra of CO2 matrix-isolated acetylacetonates of Cu(II), Ni(II), Co(II), and Zn(II) are reported between 650 and 2200 cm.-1 These spectra suggest the existence of similar (planar) structures for the Ni(II) and Cu(II) monomeric species and similar (tetrahedral) structures for the Zn(II) and Co(II) complexes. Since previous ir studies of metal acetylacetonates have ignored the fact that the anhydrous complexes are polymeric, it is fortunate that only minor differences exist between the spectra of the matrix-isolated Cu(II) complex, the complex which has received the greatest study, and the crystalline material.

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Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Quality Control of 2,6-Dimethyl-3,5-heptanedione. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 2,6-Dimethyl-3,5-heptanedione, is researched, Molecular C9H16O2, CAS is 18362-64-6, about H2O2-mediated oxidative formation of amides from aromatic amines and 1,3-diketones as acylation agents via C-C bond cleavage at room temperature in water under metal-free conditions. Author is Sun, Xi; Wang, Min; Li, Pinhua; Zhang, Xiuli; Wang, Lei.

1,3-Diketones, as novel acylation agents, reacted with aromatic amines promoted by com. available H2O2 (30% aqueous) as the sole oxidant at room temperature under metal-free conditions in water, leading to a novel and rapid amide bond formation strategy. The reported method is high-yielding, simple and mild, and is the first example of the use of 1,3-diketones as acylation agents via C-C bond cleavage.

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Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

COA of Formula: C9H16O2. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 2,6-Dimethyl-3,5-heptanedione, is researched, Molecular C9H16O2, CAS is 18362-64-6, about Steric crowding effect of 1,3-diketonates on the structures and the solution behaviors of nickel(II) mixed-ligand complexes. Author is Arakawa-Itoh, Machiko; Shibata, Masayo; Linert, Wolfgang; Fukuda, Yutaka.

Seven nickel(II) mixed-ligand diketonate complexes, containing bulky substituents, [Ni(RCOCHCOR)(diamine)X] and [Ni(RCOCHCOR)(diamine)][Y] [R = Me, Et, iPr; amine = Me2NCH2CH2NMe2 (tmen), 1,1′-(1,2-ethanediyl)bis(piperidine) (dipe); X = NO3, Y = BPh4, BF4] were prepared The crystal structures were analyzed: nitrate complexes have a six-coordinated octahedral structure with a bidentate-coordinated NO3-, and each tetraphenylborate complex has a four-coordinated square-planar structure. The ligand field strength of [Ni(RCOCHCOR)(diamine)]BPh4 in the solid state increases in the order: [Ni(iPrCOCHCOiPr)(dipe)]BPh4 < [Ni(EtCOCHCOEt)(dipe)]BPh4 < [Ni(iPrCOCHCOiPr)(tmen)]BPh4 = [Ni(EtCOCHCOEt)(tmen)]BPh4. In solution, the change of the color depending on the donor/acceptor ability of the solvent, i.e., solvatochromism was observed When DMSO was added to a solution of [Ni(RCOCHCOR)(diamine)]BPh4 in inert 1,2-dichloroethane, the adduct formation constants are in the order: [Ni(iPrCOCHCOiPr)(dipe)]BPh4 < [Ni(EtCOCHCOEt)(dipe)]BPh4 << [Ni(iPrCOCHCOiPr)(tmen)]BPh4 = [Ni(EtCOCHCOEt)(tmen)]BPh4, reflecting the difference in steric hindrance of the ligands rather than the difference in ligand field strength. The steric crowding effect of 1,3-diketonates was observed in the solid state and solution when bulky dipe is used as diamine. As far as I know, this compound(18362-64-6)COA of Formula: C9H16O2 can be applied in many ways, which is helpful for the development of experiments. Therefore many people are doing relevant researches.

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Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Hall, John Robert; Swile, G. A. published the article 《1H NMR spectra of some β-dicarbonyl complexes of trimethylplatinum(IV)》. Keywords: PMR dicarbonyl complex platinum; dicarbonyl complex platinum PMR; platinum dicarbonyl complex; carbonyl platinum complex; trimethyl platinum complex; methyl platinum complex.They researched the compound: 2,6-Dimethyl-3,5-heptanedione( cas:18362-64-6 ).Safety of 2,6-Dimethyl-3,5-heptanedione. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:18362-64-6) here.

Variable-temperature NMR spectra of a number of dimeric β-dicarbonyl complexes of trimethylplatinum(IV), where β-dicarbonyl = malondialdehyde, aceto acetaldehyde, acetylacetone, and diisobutyrylmethane, have been recorded in CDCl3. Results indicate that above room temperature, rapid dissociation of the bond between Pt and the γ-C atom of the β-dicarbonyl ligand occurs.

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Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Quality Control of 2,6-Dimethyl-3,5-heptanedione. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 2,6-Dimethyl-3,5-heptanedione, is researched, Molecular C9H16O2, CAS is 18362-64-6, about Kinetics of proton transfer of 3,5-heptanedione, 2,6-dimethyl-3,5-heptanedione, and dibenzoylmethane with amines in 50% dimethyl sulfoxide-50% water. Effect of steric crowding and π-overlap on intrinsic rate constants. Author is Bernasconi, Claude F.; Ohlberg, Douglas A. A.; Stronach, Michael W..

Rates of reversible deprotonation of 3,5-heptanedione (I), 2,6-dimethyl-3,5-heptanedione (II), and dibenzoylmethane (III) by several primary aliphatic amines, by piperidine and morpholine, and by hydroxide ion (I and III only) have been measured in 50% Me2SO-50% water (volume/volume) at 20°. Apparent pKa’s as well as the pKa values of the keto and the enol forms, and the enolization equilibrium constants (KT) were also determined The pKa and KT values show the same trends observed previously in water. The intrinsic rate constants for the reactions of I and II with a given family of amines (primary aliphatic or secondary alicyclic) are the same and also equal to those for the reaction of acetylacetone (IV) with the same amines determined previously. These results indicate that steric effects play an insignificant role in the reactions of I, II, and IV. The intrinsic rate constants for the deprotonation of III are approx. three fold lower than for I, II, and IV. This reduction is shown not be caused by a steric effect but by π-overlap with the Ph groups in the enolate ion.

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Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Schweitzer, George K.; Benson, Edmund W. published an article about the compound: 2,6-Dimethyl-3,5-heptanedione( cas:18362-64-6,SMILESS:CC(C)C(CC(C(C)C)=O)=O ).Application In Synthesis of 2,6-Dimethyl-3,5-heptanedione. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:18362-64-6) through the article.

N.M.R. data were gathered on a series of β-diketone which may be viewed as derivatives of 2,4-pentanedione in which the Me groups are replaced by Et, iso-Pr, and tert-Bu groups. These data are interpreted to identify the amounts of the keto and enol forms present in the pure liquid

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Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Safety of 2,6-Dimethyl-3,5-heptanedione. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 2,6-Dimethyl-3,5-heptanedione, is researched, Molecular C9H16O2, CAS is 18362-64-6, about Silica sulfuric acid mediated acylation of amines with 1,3-diketones via C-C bond cleavage under solvent-free conditions.

An inexpensive silica sulfuric acid (SSA) mediated acylation of amines with 1,3-diketones via C-C bond cleavage was realized under solvent and transient metal free conditions. In this chem., both catalytic aerobic oxidative and hydrolyzed C-C bond cleavage were coexisted. Furthermore, the activation of mol. oxygen by non-transient metal catalyst (SSA) was disclosed.

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Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Synthetic Route of C9H16O2. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 2,6-Dimethyl-3,5-heptanedione, is researched, Molecular C9H16O2, CAS is 18362-64-6, about Microwave-assisted organic synthesis of a high-affinity pyrazolo-pyrimidinyl TSPO ligand.

A dramatically improved total synthesis of the high-affinity translocator protein (TSPO) ligand DPA-714 (I), featuring microwave-assisted organic synthesis (MAOS), was reported. Compared with previously described approaches, this MAOS method dramatically reduced overall reaction time without adversely effecting reaction yields.

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Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica