In continuation of our work on heavy metal remediation using Moringa seed powder, this study exam... more In continuation of our work on heavy metal remediation using Moringa seed powder, this study examines the mechanisms of metal sorption on water extracts of Moringa oleifera (MO) seed powder using extended X-ray absorption fine structure (EXAFS). Chromium(III) is hydrolysed to form a mixture of [Cr3(OH)4(H2O)10]5+ and [Cr(OHx)2 ]n n(2x-3)+ complexes, x = 1 or 2. The chromium(III) complexes are octahedral with mean Cr-O bond distance of 1.97(2) A. Copper (II) forms complexes with ligands with oxygen and/or nitrogen donor atoms, most likely amino and carboxylate groups. Copper(II) retain the typical Jahn-Teller distortion with Cu-O/N bond distances of 1.97(2) and 2.21(4) A. Furthermore, a CuC distance at 2.96 A, and a corresponding Cu-O-C 3-leg scattering path at 3.10 A are observed as well, strongly supporting that a large fraction of carboxylate groups are bound to the copper(II) ion on the equatorial plane. Mercury (II) forms mainly linear complexes with nitrogen donor ligands, ...
The first methyltin(iv) solvate, formed through slow oxidation in organic medium (dmso), has been... more The first methyltin(iv) solvate, formed through slow oxidation in organic medium (dmso), has been structurally determined in solution and solid state.
Application and further structure elucidation of Pd(0)-CalB CLEA biohybrid catalyst- Chemoenzymat... more Application and further structure elucidation of Pd(0)-CalB CLEA biohybrid catalyst- Chemoenzymatic dynamic kinetic resolution of primary benzylic amines
In continuation of our work on heavy metal remediation using Moringa seed powder, this study exam... more In continuation of our work on heavy metal remediation using Moringa seed powder, this study examines the mechanisms of metal sorption on water extracts of Moringa oleifera (MO) seed powder using extended X-ray absorption fine structure (EXAFS). Chromium(III) is hydrolysed to form a mixture of [Cr3(OH)4(H2O)10]5+ and [Cr(OHx)2 ]n n(2x-3)+ complexes, x = 1 or 2. The chromium(III) complexes are octahedral with mean Cr-O bond distance of 1.97(2) A. Copper (II) forms complexes with ligands with oxygen and/or nitrogen donor atoms, most likely amino and carboxylate groups. Copper(II) retain the typical Jahn-Teller distortion with Cu-O/N bond distances of 1.97(2) and 2.21(4) A. Furthermore, a CuC distance at 2.96 A, and a corresponding Cu-O-C 3-leg scattering path at 3.10 A are observed as well, strongly supporting that a large fraction of carboxylate groups are bound to the copper(II) ion on the equatorial plane. Mercury (II) forms mainly linear complexes with nitrogen donor ligands, ...
The first methyltin(iv) solvate, formed through slow oxidation in organic medium (dmso), has been... more The first methyltin(iv) solvate, formed through slow oxidation in organic medium (dmso), has been structurally determined in solution and solid state.
Application and further structure elucidation of Pd(0)-CalB CLEA biohybrid catalyst- Chemoenzymat... more Application and further structure elucidation of Pd(0)-CalB CLEA biohybrid catalyst- Chemoenzymatic dynamic kinetic resolution of primary benzylic amines
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