✦ LIBER ✦
Mechanism of photosubstitution reactions of square-planar platinum(II) complexes. III. Steric effects on the photosubstitution mechanism of bromo(1,1,7,7-tetraethyldiethylenetriamine)platinum(II) complex ion [1]
✍ Scribed by C. Bartocci; A. Ferri; V. Carassiti; F. Scandola
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 457 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0020-1693
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✦ Synopsis
The photosubstitution reactions of Pt(Et4dien)Br' have been investigated in aqueous solution by irradiation with 313 nm light. Pt(Et4dien)Hz02' was always formed in acid or neutral solutions, independently of the presence of CT (up to 1 X IO* M) or Br-(up to 1 X 1 0e2 M). Pt(Et,dien)OH' was formed in alkaline (pH 12) solution. The photoreaction quantum yield was 4.0 X 1 0m3 in both acid and alkaline solutions, independently of the presence of outer ligands. The results are compared with those of similar unhindered complexes and a general discussion of the photosubstitution mechanism of this class of compounds is
given.