Category: 14481-08-4

Reference of Bis(2,2,6,6-tetramethyl-3,5-heptanedionato)nickel(II). 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: Bis(2,2,6,6-tetramethyl-3,5-heptanedionato)nickel(II), is researched, Molecular C22H38NiO4, CAS is 14481-08-4, about Thermochemical properties of the chelate complexes of some 3d-electron elements with 2,2,6,6-tetramethylheptane-3,5-dione. Part II. Complexes of nickel(II), copper(II) and zinc(II). Author is Giera, Edward; Kakolowicz, Wladyslaw.

The standard molar enthalpies of formation of Ni(II), Cu(II) and Zn(II) complexes with 2,2,6,6-tetramethylheptane-3,5-dione (dipivaloylmethane, HDPM) were determined by solution calorimetry. The enthalpies of hypothetical dissociation processes of complexes in the gaseous phase were calculated to determine the mean bond dissociation energies 〈D〉(M-O) and the mean coordinate bond dissociation energies 〈DCB〉(M-O): M(DPM)2(g) = M(g) + 2DPM.(g) and M(DPM)2(g) = M2+(g) + 2DPM-(g), resp. The thermochem. crystal-field stabilization energies were determined for Fe(II), Co(II), Ni(II) and Cu(II) complexes.

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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.Bakovets, V. V. researched the compound: Bis(2,2,6,6-tetramethyl-3,5-heptanedionato)nickel(II)( cas:14481-08-4 ).SDS of cas: 14481-08-4.They published the article 《Adsorption of the nickel β-diketonates NKI, NKTE, NDPM, and their ligands on the surfaces of nickel and silicon》 about this compound( cas:14481-08-4 ) in Kolloidnyi Zhurnal. Keywords: adsorption nickel diketonate silicon surface; orientation effect diketonate adsorption interaction. We’ll tell you more about this compound (cas:14481-08-4).

The orientation effects during adsorption interaction of some Ni β-diketonates and the ligands with Ni or Si surfaces in Et2O solutions were assessed. On Ni the ketoiminate (NKI), trifluoroketoiminate (NKTF), these ligands, and also dipivaloylmethane (NDPM) are adsorbed plane-parallel to the surface, so that their radicals (CH3, CF3) are directed away from the surface. It is characteristic for the adsorption of Ni dipivaloylmethanate on Ni and Si that, of all the adsorbates considered on Si the CH3 and CF3 groups are directed towards the adsorbent surface.

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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, Inorganic Chemistry called The crystal and molecular structure of bis(2,2,6,6-tetramethylheptane-3,5-dionato)nickel(II), Author is Cotton, F. A.; Wise, J. J., which mentions a compound: 14481-08-4, SMILESS is CC(C)(C1=O[Ni+2]2(O=C(C(C)(C)C)[CH-]1)O=C([CH-]C(C(C)(C)C)=O2)C(C)(C)C)C, Molecular C22H38NiO4, Product Details of 14481-08-4.

The crystal and mol. structures of the title compound, also called bis(dipivaloylmethanido)nickel(II), Ni(DPM)2, have been determined in a single crystal x-ray diffraction study. The unit cell is monoclinic (space group P21/a) with a 10.70 ± 0.01, b 10.98 ± 0.02, c 10.39 ± 0.02 A., β 113° 16′ ± 15′, and Z = 2. As expected from earlier studies by C. and Fackler (CA 56, 4352h), the mols. are mononuclear, essentially planar, and centrosym. The Ni-O distances, 1.836 ± 0.005 A., are much shorter than those in a number of complexes in which Ni(II) is octahedrally coordinated by O atoms. This can be explained by the absence of electrons in the antibonding σ-M.O. with dxy symmetry. The orientation of the mols. in the unit cell is fully described for future reference in the reporting of polarized optical absorption studies of this substance and its isomorphous Cu(II) analog.

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Electric Literature of C22H38NiO4. 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: Bis(2,2,6,6-tetramethyl-3,5-heptanedionato)nickel(II), is researched, Molecular C22H38NiO4, CAS is 14481-08-4, about Studies in negative ion mass spectrometry. IX. Electron capture by a series of tris- and bis-(dipivaloylmethanato) metal chelates.

Electron capture data and neg. ion mass spectra are reported for ML2 and ML3 where L = dipivaloylmethane and M = Sc(III), Cr(III), Mn(III), Fe(III), Co(III), Al(III), Ga(III), In(III), Co(II), Ni(II), Cu(II), Zn(II). The principal ions observed were mol. ions and ligand ions. Reaction schemes are proposed for the formation of ligand ions and for fragment ions, which account for <0.1% of total ion currents. Variations in neg. ion mass spectra are attributed to the influence of the metal atom and its 3d electron configuration on the electron capture process. The use of neg. ion mass spectrometry in the area of ultratrace metal anal. is discussed and estimates of detection limits reported. This literature about this compound(14481-08-4)Electric Literature of C22H38NiO4has given us a lot of inspiration, and I hope that the research on this compound(Bis(2,2,6,6-tetramethyl-3,5-heptanedionato)nickel(II)) can be further advanced. Maybe we can get more compounds in a similar way.

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Foulds, Gary A.; Bennett, Alison M.; Thornton, David A.; Brown, Stephen J.; Clutterbuck, Linda M.; Hinton, Cassandra; Humphreys, Geoffrey B.; Masters, Anthony F. published the article 《Ligand donor atom and substituent effects in olefin oligomerization and isomerization catalyzed by nickel-based catalyst systems》. Keywords: olefin isomerization oligomerization catalyst; nickel based catalyst.They researched the compound: Bis(2,2,6,6-tetramethyl-3,5-heptanedionato)nickel(II)( cas:14481-08-4 ).Computed Properties of C22H38NiO4. 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:14481-08-4) here.

The olefin oligomerization and isomerization catalytic activities and selectivities of catalysts generated by combining [Ni(RC(X)CHC(Y)R)2]n (R = Me, X = Y = O, n = 3; X = O, Y = NH, n = 1; X = O, Y = S, n = 1; X = Y = S, n = 1; and R = tert-Bu, n = 1, X = Y = O; X = O, Y = S; X = Y = S) and [Ni(CH3C(S)CHC(S)CH3)(PR3)Cl] (R = alkyl, aryl) precursors with [Et6-xAl2Clx] (x = 0, 2, 3, 4, 6) co-catalysis have been compared. All catalysts exhibit some olefin isomerization activity, but only those generated from precursors containing oxygen-donor ligands exhibit olefin oligomerization activity. Olefin oligomerization is also favored by the use of [EtAlCl2]2 as a co-catalyst. Almost no activity for either olefin oligomerization or isomerization was observed when using [Ni(CH3C(S)CHC(S)CH3)2] as a catalyst precursor. However, extremely active olefin oligomerization and isomerization catalysts could be generated from [Ni(CH3C(S)CHC(S)CH3)(PBu3)Cl] and appropriate co-catalysts. The mol.-weight of the products could be controlled in these systems by varying the co-catalyst. The catalysts with the most sustained high activity were those generated from [Ni(CH3C(S)CHC(S)CH3)(PBu3)Cl].

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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Mechanisms of photoreactions in solution. XX. Quenching of excited states of benzophenone by metal chelates》. Authors are Hammond, George S.; Foss, Robert P..The article about the compound:Bis(2,2,6,6-tetramethyl-3,5-heptanedionato)nickel(II)cas:14481-08-4,SMILESS:CC(C)(C1=O[Ni+2]2(O=C(C(C)(C)C)[CH-]1)O=C([CH-]C(C(C)(C)C)=O2)C(C)(C)C)C).Recommanded Product: Bis(2,2,6,6-tetramethyl-3,5-heptanedionato)nickel(II). Through the article, more information about this compound (cas:14481-08-4) is conveyed.

Metal chelate compounds containing ligands derived from β-diketones show variable reactivity as quenchers in the photoreduction of benzophenone by benzhydrol. Reactivity varies both as a function of the nature of the central metal atom and of the ligand. There is no correlation between quenching activity and the magnetic properties of the ground states of the chelates. Two possible mechanisms for quenching are discussed but no selection between them is attempted.

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Ester – Wikipedia,
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In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Metalation of etioporphyrin I with nickel(II) 1,3-diketonates, published in 1973, which mentions a compound: 14481-08-4, Name is Bis(2,2,6,6-tetramethyl-3,5-heptanedionato)nickel(II), Molecular C22H38NiO4, Synthetic Route of C22H38NiO4.

Kinetic studies of the reaction H2L + NiL12 → NiL + 2HL1 (H2L = etioporphyrin I, HL1 = 2,4-pentanedione, 1,1,1-trifluoro-2,4-pentanedione, 1,1,1,5,5,5-hexafloro-2,4-pentanedione, 2,6-dimethyl-3,5-heptanedione, 2,2,6,6-tetramethyl-3,5-heptanedione, and 1,3-diphenyl-1,3-propanedione) show that the reaction is 1st-order with respect to H2L and either 1st-order or zero-order with respect to NiL12. The presence of trace amounts of H2O inhibits the reaction. NiL12 complexes serve as a metal source in the facile preparation of Ni porphyrins.

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Ester – Wikipedia,
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The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: Bis(2,2,6,6-tetramethyl-3,5-heptanedionato)nickel(II), is researched, Molecular C22H38NiO4, CAS is 14481-08-4, about Electronic spectra of planar chelate nickel(II) complexes, the main research direction is electronic spectra nickel complex; crystal field nickel complex.Name: Bis(2,2,6,6-tetramethyl-3,5-heptanedionato)nickel(II).

The electronic spectra of NiL2, where HL is dipivaloylmethane, N,N-diethyldithiocarbamic acid, di-Et dithiophosphoric acid, ethylmethylglyoxime, and dimethylglyoxime, were interpreted by crystal field and angular overlap methods. The real geometries of the complexes were used in these interpretations. The effect of the chelate angle (α) on the s-d mixing as well as that of the configurational and spin-orbital interaction on the transition energies were traced. The parameters derived from the d-d spectra anal. were used to interpret the charge transfer spectra and the d-photoionization energies, calculating the deviations from the d-multiplet baricenter.

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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Molecular association and electronic structures of Ni(II) chelates. I. Complexes of pentane-2,4-dione and some 1,5-di-substituted derivatives》. Authors are Cotton, F. A.; Fackler, J. P. jr..The article about the compound:Bis(2,2,6,6-tetramethyl-3,5-heptanedionato)nickel(II)cas:14481-08-4,SMILESS:CC(C)(C1=O[Ni+2]2(O=C(C(C)(C)C)[CH-]1)O=C([CH-]C(C(C)(C)C)=O2)C(C)(C)C)C).COA of Formula: C22H38NiO4. Through the article, more information about this compound (cas:14481-08-4) is conveyed.

The anomalous magnetic and spectral behavior of some planar Ni(II) complexes, under certain conditions, is due to the mol. association of the solute mol. in solvents of low coordinating power. The magnetic moment and spectrum of bis(2,6-dimethyl-3,5-heptanediono)Ni(II) dissolved in toluene depend on both temperature and concentration Spectral and magnetic data at 0-50° and 0.24-0.010M are presented with the thermodynamic parameters of the association process. The more highly hindered bis(2,2,6,6-tetramethyl-3,5-heptanediono)Ni(II) remains diamagnetic under all conditions. Bis(2,4-pentanediono)-Ni(II) is associated in noncoordinating solvents at ordinary temperature, with significant concentrations of red monomer occurring only at ∼200°. Structures for the polymeric species are considered. Ni(OAc)2.4H2O (1.5 g.) was dissolved in 10 ml. absolute MeOH and the solution added to 5 ml. of MeOH containing a slight excess of freshly distilled 2,6-dimethyl-3,5-heptanedione; 5 ml. of H2O was added, the product was removed by filtration, and vacuum dried at 100° over P2O5. The product was recrystallized from C2H4Cl2, sublimed in vacuo at 150° to give bis(2,6-dimethyl-3,5-heptanediono)Ni(II), m. 155° (sealed tube). Bis(2,2,6,6-tetramethyl-3,5-heptanediono) Ni(II), m. 217-21°, was prepared similarly.

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Electric Literature of C22H38NiO4. 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: Bis(2,2,6,6-tetramethyl-3,5-heptanedionato)nickel(II), is researched, Molecular C22H38NiO4, CAS is 14481-08-4, about Preparation of dense, ultra-thin MIEC ceramic membranes by atmospheric spray-pyrolysis technique. Author is Abrutis, A.; Teiserskis, A.; Garcia, G.; Kubilius, V.; Saltyte, Z.; Salciunas, Z.; Faucheux, V.; Figueras, A.; Rushworth, S..

Dense ceramic mixed ionic and electronic conducting membranes have been deposited by atm. spray-pyrolysis technique onto porous ceramic substrates. Perovskite oxide layers, i.e., manganites La1-xSrxMnO3, ferrites La1-xSrxFe1-y(Co,Ni)yO3, gallates La1-xSrxGa1-y(Co,Ni,Fe)yO3, cobaltites La1-xSrxCoO3 and related perovskites such as lanthanum nickelate La2NiO4 layers have been prepared The structure, morphol. and composition of the layers were characterized by XRD, SEM and WDS, resp. D. and gas tightness of the layers were studied as a function of deposition process parameters, film thickness (0.5-3 μm) and preparation procedure. The presence of cracks and defects due to thermo-mech. stresses applied during or after the preparation process were correlated with the membrane composition and the corresponding thermal expansion coefficient differences between substrates and membranes.

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