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Bis-benzimidazole diamide iron(III) complexes as mimics of phenoxazinone synthase

Paper ID Volume ID Publish Year Pages File Format Full-Text
50987 46824 2012 6 PDF Available
Title
Bis-benzimidazole diamide iron(III) complexes as mimics of phenoxazinone synthase
Abstract

New Bis Benzimidazole diamide ligands-N,N′-Bis(2-Methylbenzimidazolyl) pyridinediamide [GBPA = L1] and N-Picolylated-N,N′-Bis(2-Methylbenzimidazolyl) hexandiamide [Pic-GBHA = L2] have been synthesized and utilized to prepare Fe(III) complexes. The X-ray structure of the ligand L2 crystallizes in the monoclinic space group P21/n. The complexes were suitable as catalyst for the oxidation of 2-aminophenol (OAPH) to 2-aminophenoxazine-3-one (APX) (phenoxazinone synthase activity) with dioxygen at ambient temperature. Kinetic measurements revealed dependence on the substrate concentration with respect to the corresponding catalyst. The results show that the oxidation of OAP is not dependent upon E1/2 values of the respective complexes.

► N-Picolyl Benzimidazole diamide are used to prepare iron complexes. ► Iron complexes are used for the oxidation of o-aminophenol. ► Oxidation is independent of E1/2 values of complexes. ► Reaction follows 1st order kinetics with respect to substrate.

Keywords
Iron(III); Benzimidazole diamides; Phenoxazinone synthase activity
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 17, 5 January 2012, Pages 140–145
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
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Any Questions? feel free to contact us