ISSN:
0009-2940
Keywords:
Cobalt dithiolenes
;
Charge-transfer complexes
;
Electrical conductivity
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Charge-Transfer Complexes of Metal Dithiolenes, XVIII. - Ion Pairs of Dithiolene Cobaltates with Bipyridinium AcceptorsIon pair charge-transfer (IPCT) complexes of the type {A2+[Co(mnt)2]2-}, mnt2- = cis-1,2-dicyano-1,2-ethenedithiolate, A2+ = a bipyridinium derivative, posses IPCT bands in the range from 590 to 950 nm. An X-ray structure analysis of {BQ2+[Co(mnt)2]2-}, BQ2+ = 6,7,8,9-tetrahydrodipyrido[1,2-a:2,1-c][1,4]diazocinium, reveals that the strongly twisted acceptor and planar donor do not form mixed stacks, as usually observed in less twisted systems. Electrical conductivities of pressed powder pellets are in the range of 10-15 to 10-7 Ω-1 cm-1 and do not exhibit a simple correlation with the driving force of electron transfer between the ion pair components. The cis-trans isomerization of an ethene-bridged methyl viologen acceptor leaves the conductivity almost unchanged.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19951280315
