A novel tridentate Schiff base dioxo-molybdenum(VI) complex: Synthesis, crystal structure and catalytic performance in green oxidation of sulfides by urea hydrogen peroxide

Polyhedron ◽  
2009 ◽  
Vol 28 (4) ◽  
pp. 733-738 ◽  
Author(s):  
Iran Sheikhshoaie ◽  
Abdolreza Rezaeifard ◽  
Niaz Monadi ◽  
Samira Kaafi
Keyword(s):  
Crystal Structure ◽  
Hydrogen Peroxide ◽  
Schiff Base ◽  
Catalytic Performance ◽  
Oxidation Of Sulfides ◽  
Green Oxidation ◽  
Urea Hydrogen Peroxide ◽  
Tridentate Schiff Base

Preparation of Immobilized Chromium Schiff Base Complexes and their Catalytic Performance for Olefins Epoxidation

2014 ◽  
Vol 692 ◽  
pp. 240-244
Author(s):  
Gong De Wu ◽  
Xiao Li Wang ◽  
Zhi Li Zhai
Keyword(s):  
Hydrogen Peroxide ◽  
Schiff Base ◽  
Elemental Analysis ◽  
Catalytic Performance ◽  
Schiff Base Complexes ◽  
Metal Centers ◽  
Chemical Measurements ◽  
Physico Chemical ◽  
Immobilized Complexes ◽  
Mcm 41

A series of transition metal alanine-salicylaldehyde Schiff base chromium (III) complexes immobilized on MCM-41 were prepared and characterized by various physico-chemical measurements such as FIIR, XRD, HRTEM, N2 sorption and elemental analysis. The immobilized complexes were effective and stable catalysts for the epoxidation of styrene and cyclohexene with 30% hydrogen peroxide. Moreover, the metal centers were found to play important roles in the catalytic performance of immobilized complex catalysts.

scholarly journals Synthesis, Characterization, and Crystal Structure of [Co4(CH3CO2)2L4]2[BPh4]4·0.5H2O, Where HL = 4-(Salicylaldiminato)antipyrine

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Ramadan M. El-mehdawi ◽  
Abdussalam N. EL-dewik ◽  
Mufida M. Ben-Younes ◽  
Fathia A. Treish ◽  
Ramadan G. Abuhmaiera ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Single Crystal ◽  
Elemental Analysis ◽  
Schiff Base Ligand ◽  
Title Complex ◽  
Single Crystal Diffraction ◽  
X Ray ◽  
Tridentate Schiff Base

The title complex was isolated as a red solid from the reaction of 4-(salicylaldiminato)antipyrine, HL, and cobalt (II) acetate in ethanol. The complex has been characterized by elemental analysis, FTIR, UV-Vis, and X-ray single crystal diffraction. Two crystallographically different cationic units, A and B, of the title complex are found. Both units are essentially isostructural; nevertheless, small differences exist between them. Both units contain four cobalt atoms arranged at the corners of distorted cubane-like core alternatively with phenoxy oxygen of the Schiff base. In both cases, one cobalt binds to three coordinated sites from the corresponding tridentate Schiff base ligand, and the fourth one was bonded by the acetate oxygen, and the fifth and the sixth donor sites come from the phenolate oxygen of another Schiff base ligand.

ChemInform Abstract: Copper-Schiff Base Complex Catalyzed Oxidation of Sulfides with Hydrogen Peroxide.

ChemInform ◽  
2014 ◽  
Vol 45 (28) ◽  
pp. no-no
Author(s):  
Prasanta Gogoi ◽  
Mukul Kalita ◽  
Tirtha Bhattacharjee ◽  
Pranjit Barman
Keyword(s):  
Hydrogen Peroxide ◽  
Schiff Base ◽  
Schiff Base Complex ◽  
Base Complex ◽  
Oxidation Of Sulfides ◽  
Catalyzed Oxidation

Manganese Schiff Base Immobilized on Graphene Oxide Complex and Its Catalysis for Epoxidation of Styrene

2021 ◽  
Vol 43 (1) ◽  
pp. 57-57
Author(s):  
Shuisheng Wu Shuisheng Wu ◽  
Donghui Lan Donghui Lan ◽  
Nianyuan Tan Nianyuan Tan ◽  
Ran Wang Ran Wang ◽  
Chak Tong Au Chak Tong Au ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Schiff Base ◽  
Graphene Oxide ◽  
Catalytic Performance ◽  
Covalent Modification ◽  
Styrene Epoxidation ◽  
Solid Supports ◽  
Structures And Properties ◽  
Ft Ir ◽  
Coordination Reaction

Immobilization of metal complexes on solid supports is an efficient approach to circumvent the drawbacks of homogeneous catalysis. In this paper, using graphene oxide as carrier, manganese Schiff base supported on graphene oxide (Salen Mn-GO) was prepared through aminosilane covalent modification as well as salicylaldehyde condensation and coordination reaction. The structures and properties of the composite were examined by FT-IR, XRD, XPS, TEM, TG techniques, and the catalytic performance of Salen Mn-GO in styrene epoxidation was explored. The effects of catalyst and styrene amount as well as that of reaction time on the performance of the catalyst were investigated. The results showed that Salen Mn-GO has excellent catalytic activity and reusability for epoxidation of styrene in the presence of hydrogen peroxide. Finally, the mechanism of styrene epoxidation catalyzed by Salen Mn-GO has been preliminarily discussed.

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