Results 21 to 30 of about 95,990 (357)

Synthesis, spectroscopic and antimicrobial properties of Co(II), Ni (II) and Cu(II) complexes of (E)-N’-(2-hydroxy -5-nitrobenzylidene)isonicotinohydrazide)

open access: yesJournal of Applied Sciences and Environmental Management, 2017
The objective of this study is to investigate the antimicrobial activity of novel Schiff base metal complexes. The resistance of micro-organisms to classical antimicrobial compounds poses a challenge to effective management and treatment of some ...
Tolulope M. Fasina   +2 more
doaj   +1 more source

Synthesis, crystal structure and characterization of 3-thiophene aldehyde thiosemicarbazone and its complexes with cobalt(II), nickel(II) and copper(II) [PDF]

open access: yes, 2009
The reaction of cobalt(II), nickel(II), copper(II) chlorides and bromides with 3-thiophene aldehyde thiosemicarbazone (3TTSCH) leads to the formation of a series of new complexes: [Co(3TTSC)2], [Ni(3TTSC)2], [CuCl(3TTSC)]2, [CuBr(3TTSC)]2 and [CuBr2 ...
G. Bouet   +3 more
core   +2 more sources

Spin-crossover, mesomorphic and thermoelectrical properties of cobalt(II) complexes with alkylated N3-Schiff bases [PDF]

open access: yes, 2015
Three new cobalt(ii) complexes, [Co(L12)2](BF4)2 (1), [Co(L14)2](BF4)2·H2O (2) and [Co(L16)2](BF4)2·H2O (3), where L12-16 are N3-Schiff bases appended with linear C12-16 carbon chains at the nitrogen atoms, were obtained in good yields by facile one-pot ...
Abdullah, N   +9 more
core   +2 more sources

Coordination diversity of new mononucleating hydrazone in 3d metal complexes: synthesis, characterization and structural studies [PDF]

open access: yesJournal of the Serbian Chemical Society, 2006
The mononucleating hydrazone ligand LH3, a condensation product of salicyloylhydrazine and (2-formylphenoxy)acetic acid, was synthesized and its coordination behavior with first row transition metal(II) ions was investigated by isolating and elucidating ...
Baligar Rajesh S., Revankar Vidyanand K.
doaj   +3 more sources

Bi- and tri-dentate imino-based iron and cobalt pre-catalysts for ethylene oligo-/polymerization [PDF]

open access: yes, 2013
Recent progress on the use of iron and cobalt complex pre-catalysts for ethylene reactivity is reviewed. The review is organized in terms of the denticity of the chelate ligands employed, with particular reference to the influence of the ligand ...
Feng, Chun   +6 more
core   +1 more source

Elucidation of a Low Spin Cobalt(II) System in a Distorted Tetrahedral Geometry [PDF]

open access: yes, 2002
We have prepared a series of divalent cobalt(II) complexes supported by the [PhBP_3] ligand ([PhBP_3] = [PhB(CH_2PPh_2)_3]-) to probe certain structural and electronic phenomena that arise from this strong field, anionic tris(phosphine) donor ligand. The
Allen, Matthew J.   +4 more
core   +1 more source

Cobalt(II) Complexes with N,N,N-Scorpionates and Bidentate Ligands: Comparison of Hydrotris(3,5-dimethylpyrazol-1-yl)borate Tp* vs. Phenyltris(4,4-dimethyloxazolin-2-yl)borate ToM to Control the Structural Properties and Reactivities of Cobalt Centers

open access: yesMolecules, 2018
Scorpionate ligands Tp* (hydrotris(3,5-dimethylpyrazol-1-yl)borate) and ToM (tris(4,4-dimethyloxazolin-2-yl)phenylborate) complexes of cobalt(II) with bidentate ligands were synthesized.
Toshiki Nishiura   +4 more
doaj   +1 more source

reparation of Cobalt Oxide (Co3O4) Nanoparticles Using Thermal [PDF]

open access: yesشیمی کاربردی روز, 2014
In this research, cobalt oxide (Co3O4) nanoparticles were successfully prepared by solid state thermal decomposition of cobalt(II) Schiff base complexes [Co(Me2salpn)(py)] and [Co(Me2salpn)(pip)] at 450 ºC for 3.5 h.
Aliakbar Dehno Khalaji, Zahra Dehnavi
doaj   +1 more source

Ligand Substitution Dynamics [PDF]

open access: yes, 1968
Substitution of a ligand in an inner sphere complex by an outside group is the most fundamental reaction in metal ion ...
Gray, Harry B., Langford, Cooper H.
core   +1 more source

Cobalt(II) Complexes of Nitrile‐Functionalized Ionic Liquids [PDF]

open access: yesChemistry – A European Journal, 2010
AbstractA series of nitrile‐functionalized ionic liquids were found to exhibit temperature‐dependent miscibility (thermomorphism) with the lower alcohols. Their coordinating abilities toward cobalt(II) ions were investigated through the dissolution process of cobalt(II) bis(trifluoromethylsulfonyl)imide and were found to depend on the donor abilities ...
Nockemann, Peter   +13 more
openaire   +3 more sources

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