Straightforward synthesis and catalytic applications of rigid N,O-type calixarene ligands

2015 ◽  
Vol 13 (46) ◽  
pp. 11189-11193 ◽  
Author(s):  
Varun Rawat ◽  
Konstantin Press ◽  
Israel Goldberg ◽  
Arkadi Vigalok
Keyword(s):  
Catalytic Activity ◽  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Main Group ◽  
Late Transition Metal ◽  
Organic Transformations ◽  
One Step ◽  
Catalytic Applications ◽  
Late Transition

Here, we report a simple one-step access to new rigid N,O-calixarene ligands which is based on copper-catalized amination at the lower rim. We also present their main group and late transition metal complexes which show superior catalytic activity, in several organic transformations, compared with known metal calixarene complexes.

Hydrosilylation as an efficient tool for polymer synthesis and modification with methacrylates

RSC Advances ◽  
2015 ◽  
Vol 5 (8) ◽  
pp. 5879-5885 ◽  
Author(s):  
Nuttapol Risangud ◽  
Zhijian Li ◽  
Athina Anastasaki ◽  
Paul Wilson ◽  
Kristian Kempe ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Polymer Synthesis ◽  
Late Transition Metal ◽  
Efficient Tool ◽  
Silicon Compounds ◽  
Late Transition

Hydrosilylation is a well-established reaction for the preparation of organo-silicon compounds, in which vinyl groups react with silanes (Si–H) usually catalysed by late transition metal complexes, most often Pt(ii) complexes.

Electron-density distributions in selected ferrocenyl-pyrazolyl late transition-metal complexes

2018 ◽  
Vol 20 (17) ◽  
pp. 11682-11691
Author(s):  
M. A. Peck ◽  
G. R. Hearne ◽  
C. Obuah ◽  
J. Darkwa
Keyword(s):  
Mössbauer Spectroscopy ◽  
Transition Metal ◽  
Metal Complexes ◽  
Electron Density ◽  
Transition Metal Complexes ◽  
Mossbauer Spectroscopy ◽  
Late Transition Metal ◽  
Density Distributions ◽  
Mößbauer Spectroscopy ◽  
Late Transition

57Fe Mössbauer spectroscopy has been used to study electronic dispersions in complexes of Fe, Co, Ni and Pd anchored onto 3-ferrocenyl-5-methylpyrazolylmethylenepyridine and 3-ferrocenylpyrazolylmethylenepyridine ligands.

scholarly journals Metal Complexes of Schiff Bases of 3-Hydroxyquinoxaline-2-carboxaldehyde Encapsulated in Zeolite Y Cages: Potential Catalyst for Removing Phenol from Effluent Media

2021 ◽  
Vol 33 (11) ◽  
pp. 2746-2754
Author(s):  
N.R. Suja ◽  
T.K. Bindu Sharmila ◽  
S.R. Amrutha
Keyword(s):  
Catalytic Activity ◽  
Transition Metal ◽  
Metal Complexes ◽  
Schiff Bases ◽  
Transition Metal Complexes ◽  
Zeolite Y ◽  
Point Of View ◽  
Organic Transformations ◽  
Efficient Catalyst ◽  
Industrial Pollutants

Transition metal complexes are known to be efficient catalyst for many organic transformations. Encapsulation of metal complexes in zeolite cage brings many significant modifications in the structure of the metal complexes, which are very interesting from the catalytic point of view. This study aims in a comparative evaluation of the influence of structure of neat and encapsulated complexes in their catalytic activity. Phenol is one of the major industrial pollutants. Heterogenizing transition metal Schiff bases by encapsulation inside the zeolite would help to minimize the reuse problem of transition metal complexes. This article deals with the synthesis, characterization and catalytic activity studies of Co(II), Ni(II) and Cu(II) complexes of 3-hydroxyquinoxaline-2-carboxaldehyde with ethylenediamine (L1) and an o-phenylene diamine (L2).

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