ISSN:
1572-901X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Summary Complexes of the general formula [Pt(SS) (NN)], where SS is dddt (5,6-dihydro-1,4-dithiin-2,3-dithiolate) or pddt (6,7-dihydro-5H-1,4-dithiepin-2,3-dithiolate) and NN is bipy (2,2′-bipyridine) or phen (1,10-phenanthroline), were prepared by the reaction of [PtCl2(NN)] with dithiolate ligands. The1H-n.m.r. spectra shows upfield shifts in the bipy or phen signals upon substitution of the chlorides in [PtCl2(bipy)] or [PtCl2(phen)] by dddt or pddt. The u.v.-vis. spectra exhibits intense intramolecular ligand-to-ligand charge transfer bands ca. 600 nm. Cyclic voltammograms show a reversible oxidation step, assigned to [Pt(SS) (NN)]0/[Pt(SS)(NN)]+. When the complexes were partially oxidized by I2, two broad e.s.r. signals atg∥ = 1.91,g⊥ = 2.02 appeared. Raman spectra show the presence of I 3 − and I5/− in the iodine-doped complexes. The electrical conductivities of the neutral mixed ligand complexes (10−9-10−10S cm−1) are raised to 10−7–10−8S cm−1 by I2 doping.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00980415
Permalink