150063-91-5Relevant academic research and scientific papers
Hydrogen bonding properties and intermediate structure of N-(2-carboxyphenyl)salicylidenimine
Ligtenbarg, Alette G. J.,Hage, Ronald,Meetsma, Auke,Feringa, Ben L.
, p. 807 - 812 (1999)
The hydrogen bonding properties, the nature of the tautomeric structure and dimerization of N-(2-carboxyphenyl)-salicylidenimine 1 has been studied. The crystal and molecular structure of 1 has been determined by single-crystal X-ray diffraction analysis. This compound forms a dimer in the solid state, which is held together by two strong intermolecular O-H ... O bridges [O(1) ... O(2a) = 2.455(1) A]. This dimeric structure is further stabilized by two intramolecular N-H ... O hydrogen bonds [N(1) ... O(1) = 2.654(1) and N(1) ... O(2) = 2.663(1) A]. In this way, an eight-membered pseudocycle is created. However, in methanol or acetonitrile solution, no dimerization was observed according to 1H-NMR, IR and UV measurements. It was also found that this compound exists as an intermediate form between a phenol-imine and an o-quinoid structure. In addition, a derivative soluble in chloroform, 2-[2-hydroxy-5-(2-butyl)benzylideneamino]benzoic acid 3, was examined for comparison.
Mechanochemistry in action: Exploitation of internal acid catalysis in Solvent-free synthesis of imines and evaluation of radical scavenging activities of imino derivatives
Sarma, Madhushree Das,Ghosh, Subhojit
, p. 345 - 349 (2021/02/02)
Mechanochemical protocol has been exploited to accomplish the synthesis of imino derivatives from aromatic amines with acidic functionalities and different aromatic aldehydes in excellent to nearly quantitative yields. Presence of acidic groups in the aromatic amines has been found to have profound influence on the course of the reaction. The prepared imines were screened for in vitro antioxidant activity using 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical. Some of the prepared imino derivatives displayed good to moderate antioxidant property when compared with standard natural antioxidant (L-ascorbic acid).
Ligand coordination sphere effect of Schiff base cis-dioxomolybdenum(VI) complexes in selective catalytic oxidation of alcohols
Liu, Haiwen,Zhuo, Zihan,Zhang, Yan,Wei, Hang,Zhang, Wenxin,Li, Tong,Mao, Zuodong,Wang, Weili
, p. 1253 - 1261 (2021/08/13)
Several cis-dioxomolybdenum(VI) complexes with Schiff bases-derived ligands were synthesized and fully characterized. The catalytic performances of these complexes were tested in the alcohol oxidation under solvent-free condition using H2O2 as oxidant giving high results. The influence of the oxygen, sulfur, and nitrogen atom within the coordination sphere around the molybdenum center was studied (S?>?N?>?O). From this study, we suggest that there exists a relationship between the electronegativity of the atom and the catalytic performance in alcohol oxidation.
Study on the nematicidal activity and chemical structure of NO bidentate Schiff base some metal complexes
El-Attar, Mohamed S.,Abd El-Lattif, Nosa S.,Sadeek, Sadeek A.
, p. 610 - 622 (2019/11/03)
A series of Co(II), Cu(II), Y(III), Zr(IV), La(III), and U(VI) complexes derived from 2-(2-hydroxybenzylidinemine)-benzoic acid (L) ligand were synthesized. The mode of bonding of L and the structure of its metal complexes were investigated using differen
A new ternary Cu (II) complex with 4,7-dimethyl-1,10-phenanthroline and NOO-type tridentate Schiff base ligand: Synthesis, crystal structure, biomacromolecular interactions, and radical scavenging activities
Duygu
, (2020/09/15)
NOO-type tridentate Schiff base, N-salicylidene-2-aminobenzoic acid, (H2L), and its ternary Cu (II) complex containing H2L Schiff base and 4,7-dimethyl-1,10-phenanthroline (4,7-dmphen), [Cu(4,7-dmphen)(H2L)]27H
Synthesis, spectral characterization and biological evaluation of Cu(II) complexes with schiff bases derived from 2-aminobenzoic acid
Ahalya,Valarmathy,Subbalakshmi
, p. 913 - 916 (2018/03/13)
Schiff bases i.e., 2-[(2-hydroxy-3-methoxybenzylidene)amino]benzoic acid (L1) and 2-[(2-hydroxybenzylidene)amino]benzoic acid (L2) have been synthesized by the reaction of o-vanillin and salicylaldehyde with 2-aminobenzoic acid, resp
Spectroscopic, thermal analysis, and nematicidal evaluation of new mixed ligand complexes of bidentate Schiff base and 1,10 phenanthroline with some transition metals
El-Attar, Mohamed S.
, p. 1188 - 1198 (2018/06/01)
Mononuclear Co(II), Cu(II), Y(III), Zr(IV), La(III), and U(VI) complexes of 2-[(2-hydroxybenzylidene)-amino]-benzoic acid (H2L) ligand in presence of 1,10-phenanthroline (Phen) were synthesized and characterized by elemental analysis, spectrosc
Transition metal complexes of tridentate Schiff base ligand as efficient reusable catalyst for the synthesis of polycaprolactone and polylactide
Saravanamoorthy, Somasundaram,Velmathi, Sivan
, p. 344 - 352 (2017/01/18)
New Schiff base complexes of zinc (Zn(II)HBAB), cobalt (Co(II)HBAB) and iron (Fe(II)HBAB) are synthesized from transition metal salts and a tridentate ONO donor ligand, namely (E)-2-(2-hydroxybenzylideneamino)benzoic acid (HBAB), and fully characterized.
Magnetic study of a pentanuclear {co2IIICo 3II} cluster with a bent {coII3} motif
Lazzarini, Irene C.,Funes, Alejandro V.,Carrella, Luca,Sorace, Lorenzo,Rentschler, Eva,Alborés, Pablo
, p. 2561 - 2568 (2014/06/09)
We have synthesised and structurally characterised a new pentanuclear mixed-valent cobalt cluster of formula [CoII3Co III2(OH)2(piv)6(L) 2(H2O)4] (piv = tri
Magnetic study of a pentanuclear {Co2IIICo3II} cluster with a bent {CoII3} motif
Lazzarini, Irene C.,Funes, Alejandro V.,Carrella, Luca,Sorace, Lorenzo,Rentschler, Eva,Alborés, Pablo
, p. 2561 - 2568 (2015/04/27)
We have synthesised and structurally characterised a new pentanuclear mixed-valent cobalt cluster of formula [CoII3CoIII2(OH)2(piv)6(L)2(H2O)4] (piv = trime
