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Synthesis, Structure, and Catalytic ...

Alkhamis, Khlwd M.

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Synthesis, Structure, and Catalytic Activity of Copper Cu(II) and Manganese Mn(III) Complexes of Schiff Base Ligands.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Synthesis, Structure, and Catalytic Activity of Copper Cu(II) and Manganese Mn(III) Complexes of Schiff Base Ligands./
Author:	Alkhamis, Khlwd M.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2018,
Description:	119 p.
Notes:	Source: Dissertation Abstracts International, Volume: 79-10(E), Section: B.
Contained By:	Dissertation Abstracts International79-10B(E).
Subject:	Inorganic chemistry. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10824795
ISBN:	9780438037823

Synthesis, Structure, and Catalytic Activity of Copper Cu(II) and Manganese Mn(III) Complexes of Schiff Base Ligands.
Alkhamis, Khlwd M.

Synthesis, Structure, and Catalytic Activity of Copper Cu(II) and Manganese Mn(III) Complexes of Schiff Base Ligands. - Ann Arbor : ProQuest Dissertations & Theses, 2018 - 119 p.

Source: Dissertation Abstracts International, Volume: 79-10(E), Section: B.

Thesis (Ph.D.)--Howard University, 2018.

Schiff base ligands were synthesized by condensation reaction between 2-(aminomethyl)pyridine and salicylaldehyde or salicylaldehyde substituents such as 5-chloro salicylaldehyde, 3-methoxy salicylaldehyde, 5-bromosalicylaldehyde, and 3-ethoxy salicylaldehyde. Copper and manganese complexes of the ligands were synthesized by complexation of the ligands with copper (II) chloride [CuCl2] and manganese (II) perchlorate hydrate [Mn(ClO4) 2.6H2O] respectively. The ligands and complexes were characterized by several analytical techniques such as FT-IR, 1HNMR, Gas chromatography, UV-Visible, and Atomic absorption. In addition, X-ray crystallography was used to determine the structure of [CuL1\.Cl]. The crystal structure is found to be a square pyramidal with four donor groups from six potential donors with an axial chloride group. Copper and manganese complexes were used as catalysts for the epoxidation of 1-hexene using hydrogen peroxide (H2O2) as an oxidant for the epoxidation reaction. Copper complexes were found to be poor catalysts for producing 1,2-epoxy hexane. However, a high yield of epoxide was obtained by using manganese catalysts in the presence of acetonitrile. The temperature effect on the epoxide yield was studied by carrying out the reaction at 25°C and 30°C and showed that higher epoxide yield was obtained at room temperature. Substituent effects reveal that ligands with electron withdrawing substituents like chloro and bromo gave a higher epoxide yield than electron donating substituents (methoxy and ethoxy).

ISBN: 9780438037823Subjects--Topical Terms:

3173556
Inorganic chemistry.

Synthesis, Structure, and Catalytic Activity of Copper Cu(II) and Manganese Mn(III) Complexes of Schiff Base Ligands.
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520 $a Schiff base ligands were synthesized by condensation reaction between 2-(aminomethyl)pyridine and salicylaldehyde or salicylaldehyde substituents such as 5-chloro salicylaldehyde, 3-methoxy salicylaldehyde, 5-bromosalicylaldehyde, and 3-ethoxy salicylaldehyde. Copper and manganese complexes of the ligands were synthesized by complexation of the ligands with copper (II) chloride [CuCl2] and manganese (II) perchlorate hydrate [Mn(ClO4) 2.6H2O] respectively. The ligands and complexes were characterized by several analytical techniques such as FT-IR, 1HNMR, Gas chromatography, UV-Visible, and Atomic absorption. In addition, X-ray crystallography was used to determine the structure of [CuL1\.Cl]. The crystal structure is found to be a square pyramidal with four donor groups from six potential donors with an axial chloride group. Copper and manganese complexes were used as catalysts for the epoxidation of 1-hexene using hydrogen peroxide (H2O2) as an oxidant for the epoxidation reaction. Copper complexes were found to be poor catalysts for producing 1,2-epoxy hexane. However, a high yield of epoxide was obtained by using manganese catalysts in the presence of acetonitrile. The temperature effect on the epoxide yield was studied by carrying out the reaction at 25°C and 30°C and showed that higher epoxide yield was obtained at room temperature. Substituent effects reveal that ligands with electron withdrawing substituents like chloro and bromo gave a higher epoxide yield than electron donating substituents (methoxy and ethoxy).
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