Some complexes of Pt (II) and Pd (II) with sulphur ligands
| dc.contributor.author | Ono, Reiko | en_US |
| dc.date.accessioned | 2024-08-15T16:36:57Z | |
| dc.date.available | 2024-08-15T16:36:57Z | |
| dc.date.copyright | 1983 | en_US |
| dc.date.issued | 1983 | |
| dc.degree.department | Department of Chemistry | en_US |
| dc.degree.level | Master of Science M.Sc. | en |
| dc.description.abstract | A monophenylthio-bridged complex cis-[Pt₂Cl₂(µ-Cl)(µ-SPh)(PEt₃)₂] has been prepared. A three dimensional X-ray structure analysis of the complex showed that it had cis geometry. The dihedral angle between the two square planes is 157.1°. The unit cell is orthorhombic, space group Pbca. The cell dimensions are: a = 23.389(5) Å, c = 8.154(2) Å, V_cell = 5407(2) ų at 23±2° C. Positional parameters and anisotropic temperature factors of the non-hydrogen atoms of the molecule were refined by the least-squares method. Reaction of Me₃SiSPh with [PD₂(µ-Cl)₂(PPh₃)₄](BF₄)₂ yielded [PD₂(µ-Cl)(µ-SPh)(PPh₃)₄](BF₄)₂ which was characterized by ³¹P{¹H} NMR techniques. Reactions of Me₃SiSPh with [M₂(µ-Cl)₂(PEt₃)₄](BF₄)₂ (M = Pd or Pt) under the same reaction conditions yielded a 1:1 mixture of [M₂(µ-SPh)₂(PEt₃)₄](BF₄)₂ and [MCl₂(PEt₃)₂]. The structure of a trinuclear complex [Pt₃S₃(PMe₂Ph)₆](BEt₄)₂ has been studied using NMR and X-ray diffraction techniques. The ³¹P{¹H} ¹⁹⁵Pt{¹H} NMR spectra are reported. The ²J(Pt-Pt) coupling constant falls within the range 452-484 Hz. The ¹J(Pt-P) coupling constant is 3201 Hz, which is similar to the value obtained for complexes of the type [Pt₂Cl₂(µ-SPh)₂L₂], where L is PMe₃, PMe₂Ph, PEt₃ or PⁿPr₃. The asymmetric unit of the crystal is one half of the molecular formula. The unit cell is monoclinic, space group C2/c. The cell dimensions at 23±2° C are: a = 15.447(2) Å, b = 18.033(3) Å, c = 26.505(5) Å, ß = 96.73(2)° and V_cell = 7332(2) ų. Full-matrix least squares refinement converged at R = 0.0545. | |
| dc.format.extent | 120 pages | |
| dc.identifier.uri | https://hdl.handle.net/1828/19185 | |
| dc.rights | Available to the World Wide Web | en_US |
| dc.title | Some complexes of Pt (II) and Pd (II) with sulphur ligands | en_US |
| dc.type | Thesis | en_US |
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