Preparation and Properties of Bis[μ-S-(2-tiolatoethyl)-diphenylphosphine][(2-thiolatoethyl)diphenyl-phosphine]dinickel(+1) Ion, a Novel Unsymmetrical Thiolate-bridged complex
✍ Scribed by Ernst Pfeiffer; Maurice L. Pasquier; Werner Marty
- Publisher
- John Wiley and Sons
- Year
- 1984
- Tongue
- German
- Weight
- 542 KB
- Volume
- 67
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
The kinetics of this reaction have been explored by repetitive VIS spectral scans. The transformation is at least hiphasic and the most rapid phase is completed to 90% or more in 6 5 min. The whole reaction sequence is finished in ca. 24 h. In these experiments, an isoshestic point at L = 375 nm between the species present after the most rapid phase and the final products was found. Accordingly, optical densities for Job's plots were recorded after 20 h at this wavelength, thus eliminating interference from intermediate reaction phases or possible slower side reactions.
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Good evidence for this mode of coordination has been found in the compound {Ni& + )-CH,SCH,CH,-P(Ph)CH2CHZCH2P(Ph)CH2CH2S], . I}C104 [9], with similar effects on the 3'F'-NMR spectra.