Metal Complexes of Schiff Bases and β‐Ketoamines

Holm, R. H.; Everett, Grover W.; Chakravorty, Animesh

doi:10.1002/9780470166086.ch3

Cited by 651 publications

(107 citation statements)

References 253 publications

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“…All were used as received. The N,NB-ethylenebis(salicylideneiminato)]-nickel(II) complex was prepared from salicylaldehyde, ethanediamine and Nickel nitrate hexahydrate, as reported in the literature 15 and recrystallized in AN. Figure 1 shows the molecular structure of N,NB-ethylenebis(salicylideneaminato) nickel(II), [Ni(salen)] and synthesis course of Ni(salen) monomer.…”

Section: Reagents and Materialsmentioning

confidence: 99%

Understanding the Charge Storage Mechanism and Electrochemical Performance on the Poly[Ni(salen)]-modified Electrode Electropolymerized with Different Sweep Rate

Deng

et al. 2017

Electrochemistry

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Poly[Ni(salen)] films were electropolymerized on multiwalled carbon nanotubes (MWCNTs) in tetrabutylammonium perchlorate/acetonitrile by cyclic voltammetry method. And the employed scan rates were 5, 10, 20 and 40 mV s . The excellent electrochemical performance of poly[Ni(salen)] electropolymerized at 20 mV s −1 is ascribed to the better conductivity and superior diffusion ability according to the kinetics.

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Section: Reagents and Materialsmentioning

confidence: 99%

Understanding the Charge Storage Mechanism and Electrochemical Performance on the Poly[Ni(salen)]-modified Electrode Electropolymerized with Different Sweep Rate

Deng

et al. 2017

Electrochemistry

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“…32 In addition to diamide ligands, we also explored the use of ferrocene-derived Schiff base metal complexes for the ring-opening polymerization of cyclic esters. 17,[33][34][35][36] Schiff base metal complexes have found numerous uses in coordination chemistry and catalysis, [37][38][39][40][41][42] alkoxide yttrium complexes supported by such ligands being intensely researched as initiators for the ring-opening polymerization of cyclic esters. 17,[35][36][43][44][45][46][47][48][49][50] On the other hand, reports of structurally characterized alkyl or aryl rare earth complexes bearing an imine functionality in the backbone are rare, [51][52] the majority being represented by phosphinimine ligands.…”

Section: Introductionmentioning

confidence: 99%

Yttrium-Alkyl Complexes Supported by a Ferrocene-Based Phosphinimine Ligand

Brosmer

Diaconescu

2015

Organometallics

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The synthesis and characterization of two yttrium alkyl complexes supported by a bisphosphinimine ferrocene ligand, NP by NMR spectroscopy, electrochemical measurements, and elemental analysis. Reactivity studies were also carried out, however, the lack of prolonged thermal stability at ambient temperature of these molecules led to decomposition before the clean formation of reaction products could be observed.1

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“…Forexample, the Schiff base nickel(II)complex with N,O-donor ligands possesses potent inhibitory activity against urease [4]. Due to their structural and electronic characteristics, bis(salicylaldiminato)nickel(II) complexes, possessing the substituents R and X on the imino and aromatic moieties, have been widely investigated since early 1960s [5,6].I nterestingly, these complexes mayd isplay different structural arrangements, whosestability strongly depends on thesterichindrance of the R groupb ound to thei mino moiety. For example, when R is the linear n-butyl group avery small distortion from planarity is observed [7].…”

Section: Discussionmentioning

confidence: 99%

Refinement of the crystal structure of bis(N-n-butylsalicylaldiminato- k2N,O)nickel(II), Ni(C11H14NO)2

Mei¹,

Wang²,

Zhang³

2011

Zeitschrift Für Kristallographie - New Crystal Structures

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Source of materialSalicylaldehyde( 244 mg,2m mol) and n-butylamine (146 mg, 2mmol) were dissolved in an aqueous ethanol solution (10 mL). The mixture was stirred at room temperature for 1htogive aclear yellow solution, which was added to amethanol solution (10 mL) of NiCl 2 × 7H 2 O(512 mg, 2mmol). The mixture was stirred for another 30 min at room temperature to give abrown solution and then filtered. The filtrate was kept in air for 7days, forming dark blue block-shaped crystals. The crystals were isolated and dried in avacuumdesiccatorcontaininganhydrous CaCl 2 (yield 62 %).All reagents and solvents were used as obtained without further purification. Elemental analysis -found: C, 64.00 %; H, 6.92 %; N, 6.61 %; calculated forC 22 H 28 N 2 NiO 2 :C,64.26 %; H, 6.86 %; N, 6.81 %. IR data are available in the CIF file. DiscussionAll Hatoms were placed in geometrically idealized positions and constrained to ride on their parent atomswith d(C-H) =0.93-0.97 Åand U iso (H) =1.2 U eq (carrier) or 1.5 U eq (methyl groups). DiscussionNickel is an important urease-required element. Due to their biologically relevant important behaviors, many nickel complexes with Schiff base have been extensively investigated in the past decades [1][2][3]. Forexample, the Schiff base nickel(II)complex with N,O-donor ligands possesses potent inhibitory activity against urease [4]. Due to their structural and electronic characteristics, bis(salicylaldiminato)nickel(II) complexes, possessing the substituents R and X on the imino and aromatic moieties, have been widely investigated since early 1960s [5,6].I nterestingly, these complexes mayd isplay different structural arrangements, whosestability strongly depends on thesterichindrance of the R groupb ound to thei mino moiety. For example, when R is the linear n-butyl group avery small distortion from planarity is observed [7]. In the title crystal structure with the n-butyl group bound to the imino moiety, the Schiffbase Ni(II) complex has inversion symmetry; Ni(II) lieso nt he center of symmetry (symmetry code: 1-x,2-y,-z)and is four-coordinated by two Natoms and two O atomsf rom two bidentate Schiff base ligands, which affords a square planar trans-

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Metal Complexes of Schiff Bases and β‐Ketoamines

Cited by 651 publications

References 253 publications

Understanding the Charge Storage Mechanism and Electrochemical Performance on the Poly[Ni(salen)]-modified Electrode Electropolymerized with Different Sweep Rate

Understanding the Charge Storage Mechanism and Electrochemical Performance on the Poly[Ni(salen)]-modified Electrode Electropolymerized with Different Sweep Rate

Yttrium-Alkyl Complexes Supported by a Ferrocene-Based Phosphinimine Ligand

Refinement of the crystal structure of bis(N-n-butylsalicylaldiminato- k2N,O)nickel(II), Ni(C11H14NO)2

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