ibrabbas7

Prof. Dr. Ibrahim A. Abbas

Professor - Department of Mathematics

Faculty of science

Address: Sohag University, Egypt.

307

Like
10 50 85 201 5 17 15.1K 30.2K
276

Newly Added
  • Courses 10
  • Course Supplements 50
  • Courses Tasks 85
  • Publications 201
  • Office hours 5
  • Announcements 17
  • File uploaded 63
  • Downloaded Times 2478

Publications Which contain the keyword: salt effects

Kinetic study of the base-catalyzed hydrolysis of novel high-spin hydrophobic Fe(II) – azomethine amino acid chelates: Salt and structure effects on the reactivity

2018-11-28 21:25:18 Keywords structure effects, salt effects,
Kinetic study of the base-catalyzed hydrolysis of novel high-spin hydrophobic Fe(II) – azomethine amino acid chelates: Salt and structure effects on the reactivity
The effect of salts on reactivity of basic hydrolysis of Fe(II) chelates bis(naphthylidenealanate) (nali), bis(naphthylidenephenylalanate) (nphali), bis(naphthylideneaspartate) (nasi), (naphthylidene histidinate) (nhi), bis(naphthylidene arginate) (nari) has been studied in aqueous media containing alkali metal halides, LiBr, NaCl, KBr, tetramethylammonium bromide (TMAB), tetraethylammonium bromide (TEAB), and tetrabutylammonium bromide (TBAB). The suggested mechanism of the base hydrolysis involves the parallel attack of OH−ions ... Read more

Kinetic Screening for the Acid‐Catalyzed Hydrolysis of Some Hydrophobic Fe(II) Schiff Base Amino Acid Chelates and Reactivity Trends in the Presence of Alkali Halide and Surfactant

2018-09-11 15:52:38 Keywords salt effects, Fe(II) Schiff Base Amino Acid, Acid‐Catalyzed Hydrolysis, Kinetic Screening,
Kinetic Screening for the Acid‐Catalyzed Hydrolysis of Some Hydrophobic Fe(II) Schiff Base Amino Acid Chelates and Reactivity Trends in the Presence of Alkali Halide and Surfactant
Kinetics of acid‐catalyzed hydrolysis of some high‐spin Fe(II) Schiff base amino acid complexes were followed spectrophotometrically at 298 K under pseudo–first‐order conditions. The studied ligands were derived from the condensation of 5‐bromosalicylaldehyde with different four amino acids (phenylalanine, aspartic acid, histidine, and arginine). The acid hydrolysis reaction was studied in aqueous media and in the presence of different concentrations of ... Read more

Kinetic study of the base-catalyzed hydrolysis of novel high-spin hydrophobic Fe(II)-azomethine amino acid chelates: Salt and structure effects on the reactivity

2018-09-11 16:51:41 Keywords salt effects, Hydrophobic, Hydrophilic, Kinetics, Reactivity, reaction mechanism, base hydrolysis, aqueous solution,
Kinetic study of the base-catalyzed hydrolysis of novel high-spin hydrophobic Fe(II)-azomethine amino acid chelates: Salt and structure effects on the reactivity
The effect of salts on reactivity of basic hydrolysis of Fe(II) chelates bis(naphthylidenealanate) (nali), bis(naphthylidenephenylalanate) (nphali), bis(naphthylideneaspartate) (nasi), (naphthylidene histidinate) (nhi), bis(naphthylidene arginate) (nari) has been studied in aqueous media containing alkali metal halides, LiBr, NaCl, KBr, tetramethylammonium bromide (TMAB), tetraethylammonium bromide (TEAB), and tetrabutylammonium bromide (TBAB). The suggested mechanism of the base hydrolysis involves the parallel attack of OH−ions ... Read more

Salt Effects on the reactivity of the base-catalysed hydrolysis of some novel low-spin hydrophobic Fe(II)-amino acid azomethine chelates

2018-08-29 20:23:24 Keywords Fe(II) complexes, salt effects,
Salt Effects on the reactivity of the base-catalysed hydrolysis of some novel low-spin hydrophobic Fe(II)-amino acid azomethine chelates
Salt effects on the reactivity of base hydrolysis of Fe(II) chelates [naphthylideneisoleucinate (nili), naphthylideneleucinate (nli), naphthylideneserinate (nsi), salicylideneisoleucinate (sili), salicylideneleucinate (sli), salicylidenemethioninate (smi), and salicylidenetryptophanate (sti)] have been investigated in aqueous media containing alkali metal halides and tetra-n-butylammonium bromide (TBAB). NaCl and NaBr exhibited different reactivity trends from those of KBr and TBAB. The observed patterns vary markedly with complex ... Read more

  • «
  • 1
  • »