The photochemistry of some quadrate Cr(III) complexes
| dc.contributor.author | Valentin, John Gwynfryn | en_US |
| dc.date.accessioned | 2024-08-15T20:10:56Z | |
| dc.date.available | 2024-08-15T20:10:56Z | |
| dc.date.copyright | 1970 | en_US |
| dc.date.issued | 1970 | |
| dc.degree.department | Department of Chemistry | |
| dc.degree.level | Master of Science M.Sc. | en |
| dc.description.abstract | The aquation quantum yields of [Cr(en)₂ox]⁺, [Cr(en)₂ox]⁻, cis-[Cr(en)₂Cl₂]⁺ and trans-[Cr(en)₂Cl₂]⁺ were measured in the visible region at pH 3.0 and at various wavelengths and temperatures. The results are interpreted in terms of empirical rules proposed by earlier workers. Both [Cr(en)₂ox]⁺ and [Cr(en)₂ox]⁻ were found to give protonated monodentate ethylenediamine complexes as primary photolysis products. The φₐ(en) were found to be (1.6 ± .2) x 10⁻¹ and (2.0 ± .9) x 10⁻² respectively. No oxalate photoaquation was observed for either complex. Cis-[Cr(en)₂Cl₂]⁺ was found to undergo both ethylenediamine and Cl⁻ photoaquation with φₐ(en) = (1.3 ± .2) x 10⁻¹ and φₐ(Cl⁻) = (1.5 ± 1.0) x 10⁻². Trans-[Cr(en)₂Cl₂]⁺ showed only Cl⁻ aquation φₐ(Cl⁻) = (3.2 ± .2) x 10⁻¹. It was found that photoaquation of [Cr en(ox)₂]⁻ and trans-[CR(en)₂Cl₂]⁺ was accompanied by stereochemical changes, requiring water attack trans to the leaving group. | en |
| dc.format.extent | 83 pages | |
| dc.identifier.uri | https://hdl.handle.net/1828/19972 | |
| dc.rights | Available to the World Wide Web | en_US |
| dc.title | The photochemistry of some quadrate Cr(III) complexes | en_US |
| dc.type | Thesis | en_US |
Files
Original bundle
1 - 1 of 1
Loading...
- Name:
- VALENTIN_John_Gwynfryn_MSC_1970_1157113.pdf
- Size:
- 22.5 MB
- Format:
- Adobe Portable Document Format