Relevant bibliographies by topics / Nickel diimine complex

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Academic literature on the topic 'Nickel diimine complex'

Author: Grafiati
Published: 4 June 2021
Last updated: 12 February 2022

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Journal articles on the topic "Nickel diimine complex"

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Xiao, An Guo, Shi Biao Zhou, Qing Yun Zheng, You Ming Shen, and Yong Bin Zhuan. "Study the Influences of ZnEt2 on Ethylene Chain Transfer Polymerization." Advanced Materials Research 602-604 (December 2012): 672–75. http://dx.doi.org/10.4028/www.scientific.net/amr.602-604.672.

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The influences of ZnEt2 on ethylene chain transfer polymerization were investigated in detail and the polymerization mechanism was thoroughly analyzed. The results indicated that ZnEt2 contributed greatly to increase the activity of α-diimine nickel complex/ZnEt2/MAO(MAO: methylaluminoxane). It was striking that α-diimine nickel complex/ZnEt2 catalyst system (1/100 mol/mol) exhibited 8.0 ×104g/mol∙h activity, it was possible the formation of the ion pairs of Nickel and Zinc was convenient for ethylene chain propagation, however, the ion pairs were unstable in ethylene polymerization.
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Padilla-Vélez, Omar, Kyle S. O’Connor, Anne M. LaPointe, Samantha N. MacMillan, and Geoffrey W. Coates. "Switchable living nickel(ii) α-diimine catalyst for ethylene polymerisation." Chemical Communications 55, no. 53 (2019): 7607–10. http://dx.doi.org/10.1039/c9cc03154e.

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Wang, Qi, and Peng Liu. "Dual bimodal polyethylene prepared by intercalated silicate with nickel diimine complex." Journal of Polymer Science Part A: Polymer Chemistry 43, no. 22 (2005): 5506–11. http://dx.doi.org/10.1002/pola.21030.

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Han, Yiqin, and Danfeng Zhang. "Copolymerization of ethylene with polar monomer by α - diimine nickel complex." IOP Conference Series: Materials Science and Engineering 231 (September 2017): 012140. http://dx.doi.org/10.1088/1757-899x/231/1/012140.

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Xue, Xinghua, Xuan Yang, Yizhi Xiao, Qixing Zhang, and Haihua Wang. "Ethylene polymerization using nickel α-diimine complex supported on SiO2/MgCl2 bisupport." Polymer 45, no. 9 (April 2004): 2877–82. http://dx.doi.org/10.1016/j.polymer.2004.02.048.

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Fassina, Viviane, Carolina Ramminger, Marcus Seferin, Raquel S. Mauler, Roberto F. de Souza, and Adriano L. Monteiro. "3-Benzyl-Nickel-Diimine Complex: Synthesis and Catalytic Properties in Ethylene Polymerization." Macromolecular Rapid Communications 24, no. 11 (July 2003): 667–70. http://dx.doi.org/10.1002/marc.200350009.

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de Souza, Caroline G., Roberto F. de Souza, and Katia Bernardo-Gusmão. "Effect of alkylaluminum cocatalyst on ethylene polymerization with nickel-α-diimine complex." Applied Catalysis A: General 325, no. 1 (May 2007): 87–90. http://dx.doi.org/10.1016/j.apcata.2007.03.007.

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Zhang, Zhigang, Shuying Wang, and Xindian Dong. "Photodynamic activity of a nickel diimine complex and its interaction with DNA." Transition Metal Chemistry 37, no. 4 (March 29, 2012): 379–83. http://dx.doi.org/10.1007/s11243-012-9599-y.

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Matthews, Morgan, Madison Sendzik, Adrienne Bruggeman, Claire Kearns, Allen G. Oliver, and Dominic C. Babbini. "Synthesis and crystal structure of a disubstituted nickel(II) bis[(dimethylaminophenylimino)ethyl]pyridine chloride complex." Acta Crystallographica Section E Crystallographic Communications 73, no. 8 (July 13, 2017): 1167–71. http://dx.doi.org/10.1107/s2056989017010088.

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The solvated title compound, bis[2,6-bis(1-{[4-(dimethylamino)phenyl]imino-κN}ethyl)pyridine-κN]nickel(II) dichloride–dichloromethane–water (1/2/2), [Ni(C25H29N5)2]Cl2·2CH2Cl2·2H2O, represents a nickel(II) bis(pyridine diimine) complex with electron-donating dimethylaminophenyl substituents. The complex crystallizes as a water/dichloromethane solvate with Z′ = 2, thus the asymmetric unit consists of two NiII complex cations, four chloride anions, four adventitious water and four dichloromethane solvent molecules. Around each octahedrally coordinated NiII cation, one pendant phenyl group on each of the two ligands has an intramolecular π–π interaction with the pyridine ring of the other chelating ligand. In the crystal, pairs of water molecules are hydrogen bonded to pairs of chlorine atoms. The dichloromethane solvent molecules are likewise hydrogen bonded to the chloride anions.
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Simon, Leonardo C., Raquel S. Mauler, and Roberto F. De Souza. "Effect of the alkylaluminum cocatalyst on ethylene polymerization by a nickel-diimine complex." Journal of Polymer Science Part A: Polymer Chemistry 37, no. 24 (December 15, 1999): 4656–63. http://dx.doi.org/10.1002/(sici)1099-0518(19991215)37:24<4656::aid-pola24>3.0.co;2-g.

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Dissertations / Theses on the topic "Nickel diimine complex"

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Peleška, Jan. "Kinetika koordinační polymerace 1-olefinů katalyzované diiminovými komplexy niklu." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2012. http://www.nusl.cz/ntk/nusl-233353.

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This Ph.D. thesis is focused on kinetic study of propene and hex-1-ene coordination polymerizations initiated by complex [(2-tBuC6H4)N=C(1,8-naphtalenediyl)C=N(2-tBuC6H4)]NiBr2 activated by simple organoaluminium compounds and on product properties. In first three parts proper activators are chosen in model polymerizations. The attention is paid to the reproducibility of polymerizations and analytical methods. The fourth part is focused on propene polymerization kinetics with the aim to define optimal reaction conditions, especially polymerization temperature and time. The four part concerns also properties of polymers. The fifth and sixth parts deal with hex-1-ene polymerization kinetics conducted at various activator/initiator molar ratios and various catalytic precursor concentrations, to find out kinetic orders with respect to catalyst and cocatalyst concentration. Last part is oriented on detail mechanistic investigation of nickel diimine complexes activation process. Results of measurements in presence or absence of monomer enabled to propose new interpretation of UV-vis spectra based on concrete structures of absorbing species.
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Rosa, Vitor João Salgueiro. "Synthesis, characterization and reactivity of new cobalt, palladium and nickel complexes bearing α-diimines and P, O ligands." Master's thesis, FCT - UNL, 2008. http://hdl.handle.net/10362/1771.

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This work describes the synthesis and characterization of a series of new α-diimine and P,O, β-keto and acetamide phosphines ligands, and their complexation to Ni(II), Co(II),Co(III) and Pd(II) to obtain a series of new compounds aiming to study their structural characteristics and to test their catalytic activity. All the compounds synthesized were characterized by the usual spectroscopic and spectrometric techniques: Elemental Analysis, MALDI-TOF-MS spectrometry, IR, UV-vis, 1H, 13C and 31P NMR spectroscopies. Some of the paramagnetic compounds were also characterized by EPR. For the majority of the compounds it was possible to solve their solid state structure by single crystal X-ray diffraction. Tests for olefin polymerization were performed in order to determine the catalytic activity of the Co(II) complexes. Chapter I presents a brief introduction to homogenous catalysis, highlighting the reactions catalyzed by the type of compounds described in this thesis, namely olefin polymerization and oligomerization and reactions catalyzed by the complexes bearing α-diimines and P,O type ligands. Chapter II is dedicated to the description of the synthesis of new α-diimines cobalt (II) complexes, of general formula [CoX2(α-diimine)], where X = Cl or I and the α-diimines are bis(aryl)acenaphthenequinonediimine) (Ar-BIAN) and 1,4-diaryl-2,3-dimethyl-1,4-diaza-1,3-butadiene (Ar-DAB). Structures solved by single crystal X-ray diffraction were obtained for all the described complexes. For some of the compounds, X-band EPR measurements were performed on polycrystalline samples, showing a high-spin Co(II) (S = 3/2) ion, in a distorted axial environment. EPR single crystal experiments on two of the compounds allowed us to determine the g tensor orientation in the molecular structure. In Chapter III we continue with the synthesis and characterization of more cobalt (II)complexes bearing α-diimines of general formula [CoX2(α-diimine)], with X = Cl or I and α-diimines are bis(aryl)acenaphthenequinonediimine) (Ar-BIAN) and 1,4-diaryl-2,3-dimethyl- 1,4-diaza-1,3-butadiene (Ar-DAB). The structures of three of the new compounds synthesized were determined by single crystal X-ray diffraction. A NMR paramagnetic characterization of all the compounds described is presented. Ethylene polymerization tests were done to determine the catalytic activity of several of the Co(II) complexes described in Chapter II and III and their results are shown. In Chapter IV a new rigid bidentate ligand, bis(1-naphthylimino)acenaphthene, and its complexes with Zn(II) and Pd(II), were synthesized. Both the ligand and its complexes show syn and anti isomers. Structures of the ligand and the anti isomer of the Pd(II) complex were solved by single crystal X-ray diffraction. All the compounds were characterized by elemental analysis, MALDI-TOF-MS spectrometry, and by IR, UV-vis, 1H, 13C, 1H-1H COSY, 1H-13C HSQC, 1H-13C HSQC-TOCSY and 1H-1H NOESY NMR when necessary. DFT studies showed that both conformers of [PdCl2(BIAN)] are isoenergetics and can be obtain experimentally. However, we can predict that the isomerization process is not available in square-planar complex, but is possible for the free ligand. The molecular geometry is very similar in both isomers, and only different orientations for naphthyl groups can be expected. Chapter V describes the synthesis of new P, O type ligands, β-keto phosphine, R2PCH2C(O)Ph, and acetamide phosphine R2PNHC(O)Me, as well as a series of new cobalt(III) complexes namely [(η5-C5H5)CoI2{Ph2PCH2C(O)Ph}], and [(η5- C5H5)CoI2{Ph2PNHC(O)Me}]. Treating these Co(III) compounds with an excess of Et3N, resulted in complexes η2-phosphinoenolate [(η5-C5H5)CoI{Ph2PCH…C(…O)Ph}] and η2- acetamide phosphine [(η5-C5H5)CoI{Ph2PN…C(…O)Me}]. Nickel (II) complexes were also obtained: cis-[Ni(Ph2PN…C(…O)Me)2] and cis-[Ni((i-Pr)2PN…C(…O)Me)2]. Their geometry and isomerism were discussed. Seven structures of the compounds described in this chapter were determined by single crystal X-ray diffraction. The general conclusions of this work can be found in Chapter VI.
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Huang, Che-Wei, and 黃哲偉. "Cobalt and Nickel Low-coordinate Complexes Supported by α-Diimine Ligand: Synthesis, Structure and Reactivity Study." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/76928761925433325042.

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碩士
國立清華大學
化學系
99
In this thesis, a series of low-coordinate α-diimine cobalt and nickel complexes were successfully synthesized and characterized. Reduction of (o,o’-iPr2C6H3-DAB)CoCl2 (o,o’-iPr2C6H3-DAB = 2.3-dimethyl-1,4-bis- (2,6-diisopropylphenyl)-1,4-diaza-1,3-butadiene) by one equivalent of KC8 in toluene afforded a dicobalt complex [(o,o’-iPr2C6H3-DAB)Co(μ-Cl)]2 (1). However, when the amount of KC8 was increased from one to two equivalent, a half-sandwich complex [(o,o’-iPr2C6H3-DAB)Co(η6-C7H8)] (2) was generated. Interestingly, two dimeric complexes [(o,o’-R2C6H3-DAB)Co]2 (R = iPr (3), Et (4)) were isolated, if the reduction of (o,o’-R2C6H3-DAB)CoCl2 (R = iPr, Et) was carried out in ether or THF. Both 2 and 3 reacted with white phosphorus to lead to the isolation of a P4-bridged dicobalt complex (μ-η4: η4-P4)[Co(o,o’-iPr2C6H3-DAB)]2 (5), where the bridging square planar P4 coordinate to each cobalt atom in an ?? fashion. Furthermore, treatment of both complexes 2 and 3 with elemental selenium produced [(o,o’-iPr2C6H3-DAB)Co(μ-Se)]2 (6), in which two elemental selenium atoms bridge two cobalt atoms. Reduction of (o,o’-iPr2C6H3-DAB)NiI2 by two equivalent of KC8 in toluene led to the isolation of an inverted-sandwich complex (μ-η3:η3-C7H8)[Ni(o,o’-iPr2C6H3-DAB)]2 (7). Interestingly, when the reduction was carried out in ether or THF, a Ni-Ni bonded complex [(o,o’-iPr2C6H3-DAB)Ni]2 (8) (Ni-Ni, 2.2946(8) A) was obtained. Notably, when the amount of KC8 was increased from two to three equivalent, an inverted-sandwich complex (μ-η3:η3-C6H6)[Ni(o,o’- iPr2C6H3-DAB)]2(Et2O)2(THF)2 (9) was obtained. Upon reduction of the less hindered (o,o’-Et2C6H3-DAB)NiI2 by two equivalent of KC8, a mononuclear distorted tetrahedral complex [Ni(o,o’-Et2C6H3-DAB)2] (10) was isolated. Reaction of complex 8 with white phosphorus yielded a P4-bridged dinuclear complex (μ-η4:η4-P4)[Ni(o,o’-iPr2C6H3-DAB)]2 (11), in which the structure is similar to 5. Treatment of 8 with COT (COT = 1,3,5,7-cyclooctatetraene) yielded trans-(η2,2,η2,2-COT)[Ni(o,o’- iPr2C6H3-DAB)]2 (12), where COT coordinates to each nickel atom by 1,5 and 3,7 position π-bond. Diphenylacetylene, phenylacetylene and benzonitrile were reduced to double bond by 8 upon coordination to nickel atom forming mononuclear square planar complexes (η2-X)[Ni(o,o’-iPr2C6H3-DAB)] (X = PhCCPh (13), HCCPh (14), NCPh (15)).
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Noël, Gilles Louis Lucien. "Pyrazolliganden mit Imin-Seitenarmen und ihre zweikernigen Palladium(II)- und Nickel(II)-Komplexe: neue bimetallische Katalysatoren für die Olefinpolymerisation." Doctoral thesis, 2005. http://hdl.handle.net/11858/00-1735-0000-0006-B0C8-6.

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5

Sachse, Anna. "Mechanistische Einblicke in die Aktivierung bimetallischer Präkatalysatoren für die Norbornenpolymerisation: Multinukleare Übergangsmetallkomplexe der Gruppen 9-11 mit a-Diimin Pyrazolatliganden." Doctoral thesis, 2009. http://hdl.handle.net/11858/00-1735-0000-0006-ACC8-1.

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Book chapters on the topic "Nickel diimine complex"

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Sung KIM, Jae, Deepak Chandran, Dae-Won Park, Chang-Sik Ha, and Il Kim. "Polymerization of 1,3-Butadiene with Nickel(II) α-Diimine Complexes Combined with Ethyialuminum Sesquischloride." In Science and Technology in Catalysis 2006, 525–26. Elsevier, 2007. http://dx.doi.org/10.1016/b978-0-444-53202-2.50122-6.

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