naglaa_abdallah

Naglaa Youssef Abdallah

مدرس - Lecturer

كلية العلوم

العنوان: جامعه سوهاج - كليه العلوم- قسم النبات والميكروبيولوجى

1

إعجاب
6 1 2 18 4 3 294 179
100

أضيف حديثا
  • المقررات الدراسية 6
  • ملحقات المقررات الدراسية 1
  • واجبات المقررات الدراسية 2
  • المنشورات و المؤلفات 18
  • ساعات مكتبية 4
  • الاعلانات 3
  • عدد الملفات المرفوعه 1
  • كل التنزيلات 4

المنشورات و المؤلفات التي تحتوي علي الكلمة المفتاحية: Kinetics

Reactivity trends of hydroxide ion attack on high spin Fe(II) complexes in some mixed aqueous solvents: Gibb’s Free Energy of Transfer and initial-transition state analysi

2018-09-06 08:23:13 الكلمات المفتاحية Initial state-transition state, Gibb’s Free Energy of Transfer, Chelate, Solvolysis, Kinetics, base hydrolysis,
Reactivity trends of hydroxide ion attack on high spin Fe(II) complexes in some mixed aqueous solvents: Gibb’s Free Energy of Transfer and initial-transition state analysi
The kinetics of hydroxide ion attack on bis(bromosalicylidene alanate)iron (II) (bsali), bis(bromosalicylidene phenylalanate)iron(II) (bsphali), bis(bromosalicylidene aspartate)iron(II) (bsasi), (bromosalicylidene histidinate)iron(II) (bshi), bis(bromosalicylidene arginate)iron(II) (bsari) have been reported in different binary aqueous solvent mixtures at 298 K. The observed reactivity trends are discussed in terms of the hydrophilic and hydrophobic forms of the complexes investigated, as well as the transfer chemical potentials ... إقراء المزيد

Hydrophobicity, reactivity trends of base catalyzed hydrolysis of some novel high spin Fe(II) chelates in some binary aqueous solvent mixtures: Initial-transition state analysis

2018-09-11 12:55:55 الكلمات المفتاحية Solvent, Hydrophobic, Hydrophilic, Kinetics, Hydration, Solvolysis, Reactivity, Initial state-transition state,
Hydrophobicity, reactivity trends of base catalyzed hydrolysis of some novel high spin Fe(II) chelates in some binary aqueous solvent mixtures: Initial-transition state analysis
Rate constants for the base hydrolysis of bis(naphthylidene alanate)iron (II) (nali), bis(naphthylidene phenylalanate)iron(II) (nphali), bis(naphthylidene aspartate)iron(II) (nasi), (naphthylidene histidinate)iron(II) (nhi), bis(naphthylidene arginate)iron(II) (nari) have been reported in different binary aqueous solvent mixtures at 298 K. The observed reactivity trends are discussed in terms of the hydrophilic and hydrophobic forms of the complexes investigated, as well as the transfer chemical potentials ... إقراء المزيد

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 الكلمات المفتاحية 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 ... إقراء المزيد

Kinetics, reactivity, initial-transition state analysis and thermodynamic parameters of base-catalyzed hydrolysis of coumalic acid in solvents with different polarities

2018-09-11 12:45:20 الكلمات المفتاحية Isokinetic temperature, Transition state, Initial state, Transfer chemical potential, Activation energy barrier, Base-catalyzed hydrolysis, Coumalic acid, Kinetics, aqueous-methanol, aqueous-acetone,
Kinetics, reactivity, initial-transition state analysis and thermodynamic parameters of base-catalyzed hydrolysis of coumalic acid in solvents with different polarities
Base-catalyzed hydrolysis of coumalic acid (COU) in binary aqueous-methanol and aqueous-acetone mixtures has been studied kinetically at a temperature range from 283 to 313 K. Moreover, the change in the activation energy barrier of COU from water to water–methanol and water–acetone mixtures is estimated from the kinetic data. Solvent effects on reactivity trends have been analyzed into initial and transition ... إقراء المزيد

Kinetics of base hydrolysis of some chromen-2-one indicator dyes in different solvents at different temperatures

2018-08-30 19:39:42 الكلمات المفتاحية Kinetics, Activation energy barrier, solvent effect, base hydrolysis mechanism, Hydroxy-chromen-2-ones,
Kinetics of base hydrolysis of some chromen-2-one indicator dyes in different solvents at different temperatures
Base hydrolysis of 7-hydroxy-2H-chromen-2-one (HC) and 7-hydroxy-2H-chromen-2-one-4-acetic acid (HCA) in aqueous-methanol and aqueous-acetone mixtures were studied kinetically at temperature range from 283 to 313 K. The activation parameters of the reactions were evaluated and discussed. Moreover, the change in the activation energy barrier of the investigated compounds from water to water-methanol and water-acetone mixtures was estimated from the kinetic data. ... إقراء المزيد