ISSN:
0021-8383
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Tetrathiafulvalenes. XIX. Synthesis and Properties of Electron Conducting Poly-Dithiolene Complexes with Ethylene Tetrathiolat and Tetrathiafulvalene Tetrathiolat as Bridge Ligands[1,3]-Dithiolo[4,5-d]-1,3-dithiol-2,5-dione 7 and 5-(5-oxo[1,3]-dithiolo[4,5-d]1,3-dithiole-2-ylidene)[1,3]-dithiolo[4,5-d]1,3-dithiol-2-one 8 were synthesised from 1,3-dithiole-2-thione-4,5-dithiolat. The ligands react with salts of iron, cobalt, nickel, palladium, platinum and copper to give the polymer complexes 22a-g and 23a-e, respectively. Irradiation of 7 in the presence of iron penta-, dicobalt octa- or nickel tetracarbonyl gives the corresponding dithiolene complexes 21a-c.The amorphous insoluble polymer complexes from types 21, 22, and 23 have been characterised by i.r.-spectroscopy, susceptibility and conductivity measurements.The nickel complexes have the highest electrical conductivity (σRT ∼ 10-1Ω-1cm-1, pellets) with a very low activation energy (0,045 eV, 100-300 K)A high electron delocalization in the direction of the polymer chain and an easy charge transfer from chain to chain is supposed.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/prac.19833250612
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