- Silver(I)-pyridinyl Schiff base complexes: Synthesis, structural characterization and reactivity in ring-opening polymerisation of ε-caprolactone
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Reactions of AgO2C2F3with 2-pyridinyl Schiff base ligands bore five novel complexes of the type [(AgO2C2F3)2.L2]: where L?=?L1, (E)-N-(1-(pyridin-2-yl)ethylidene)anili
- Njogu, Eric M.,Omondi, Bernard,Nyamori, Vincent O.
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p. 160 - 170
(2017/01/03)
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- PYRIDINE COMPLEX OF ZIRCONIUM, CATALYTIC SYSTEM COMPRISING SAID PYRIDINE COMPLEX OF ZIRCONIUM AND PROCESS OF (CO)POLYMERIZATION OF CONJUGATED DIENES
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Pyridine complex of zirconium having general formula (I): ? Said pyridine complex of zirconium having general formula (I) may advantageously be used in a catalytic system for the (co)polymerization of conjugated dienes.
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Page/Page column 28
(2016/04/09)
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- Topological Evolution in Mercury(II) Schiff Base Complexes Tuned through Alkyl Substitution – Synthesis, Solid-State Structures, and Aggregation-Induced Emission Properties
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From two series of Schiff base ligands, (E)-N-(pyridine-2-yl)(CMe=NPhR) and (E)-N-(pyridine-2-yl)(CH=NPhR) [R = H, L1a, L1b; 2-CH3, L2a, L2b; 4-CH3, L3a, L3b; 2,6-(CH3)2, L4a, L4b; 2,6-(C2H5/sub
- Dong, Yu-Wei,Fan, Rui-Qing,Wang, Xin-Ming,Wang, Ping,Zhang, Hui-Jie,Wei, Li-Guo,Song, Yang,Du, Xi,Chen, Wei,Yang, Yu-Lin
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p. 3598 - 3610
(2016/08/09)
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- Chelate [2-(iminoethyl)pyridine N-oxide]metal complexes - Synthesis and structural comparison with their chemically related 2-(iminoethyl)pyridine- derived systems
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The N,O-chelate ligands 2-(iminoethyl)pyridine N-oxide (2a) and 2-(iminoethyl)-6-isopropylpyridine N-oxide (2b) were prepared by conventional synthetic routes, the latter involving a variant of the Reissert-Henze reaction. Treatment of 2a with FeCl2 resulted in a deoxygenation reaction of the ligand and formation of the salt (bis{2-(iminoethyl)-pyridine}FeCl] +[FeCl4]- (18a). In contrast, the reaction of 2a with PdCl2 or CoCl2 cleanly furnished the six-membered chelate [κN,O-2(iminoethyl)pyridine N-oxide]MCl2 complexes (19a, M = Pd) or (20a, M = Co), respectively, which were both characterised by X-ray diffraction. Treatment of 2b with [NiBr2 (dme)], followed by crystallisation from THF, gave the complex [κN,O-2b)NiBr2(THF)] (21b), which features a distorted trigonal-bipyramidal coordination geometry of the central metal atom. The reaction of 2a with [NiBr2(dme)] gave the structurally related complex [(κN,O-2a)NiBr2(κO-2a)] (21a). The N,O-chelate Pd complex 19a was shown to be an active catalyst for the Suzuki coupling reaction. The ligand systems 2a,b and their related 2-(iminoethyl)-pyridines 3a,b and a variety of metal complexes of ligands 3 were also prepared and characterised for comparison by X-ray diffraction. Wiley-VCH Verlag GmbH & Co. KGaA, 2006.
- Nienkemper, Katrin,Kotov, Vasily V.,Kehr, Gerald,Erker, Gerhard,Froehlich, Roland
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p. 366 - 379
(2007/10/03)
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- Pyridinylimine-based nickel(II) and palladium(II) complexes: Preparation, structural characterization and use as alkene polymerization catalysts
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Preparation of four dimeric nickel(II) complexes and three monomeric palladium(II) complexes bearing didentate pyridinylimine ligands is described. The solid-state structures of these compounds have been determined by single-crystal X-ray diffraction. After activation with methylaluminoxane (MAO) the nickel compounds were used as catalysts in ethylene polymerization producing nearly linear or primarily methyl-branched polymers. The effect of ligand environment was most evident on degree of branching, while catalytic activity and molecular weight of the polymer were more dependent on the general catalyst composition as well as reaction conditions. Activation of the dichloropalladium(II) complexes with MAO yields highly active catalysts for the polymerization of bicyclo[2.2.1]hept-2-ene (norbornene) whereas only low conversions (4.
- Laine, Timo V.,Piironen, Ulla,Lappalainen, Kristian,Klinga, Martti,Aitola, Erkki,Leskel?, Markku
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p. 112 - 124
(2007/10/03)
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