Charge transfer complex electric conductivity

Charcoal s. Carbon Charge transfer complexes, electrically conductive 32, 993 Chelates, s. Complex salts, inner Chelation... 

M.p. 296 C. Accepts an electron from suitable donors forming a radical anion. Used for colorimetric determination of free radical precursors, replacement of Mn02 in aluminium solid electrolytic capacitors, construction of heat-sensitive resistors and ion-specific electrodes and for inducing radical polymerizations. The charge transfer complexes it forms with certain donors behave electrically like metals with anisotropic conductivity. Like tetracyanoethylene it belongs to a class of compounds called rr-acids. tetracyclines An important group of antibiotics isolated from Streptomyces spp., having structures based on a naphthacene skeleton. Tetracycline, the parent compound, has the structure ... 

Other miscellaneous applications of malononitdle are the synthesis of 7,7,8,8-tetracyanoquinodimethane (46) which is a powerful electron acceptor in the formation of charge-transfer complexes which are of interest because of their conductivity of electricity (96), as well as of 2-chloroben2yhdene malononitnle [2698-41-1] (45) also known as CS-gas, which is a safe lachrymatory chemical used for self-defense devices (97). 

Compound 68 is known to form an electrically conducting organic metal with a large number of acceptor systems. When a toluene solution of enyne 67 and alkene 68 was refluxed for 2 days, the coupling product 70, rather than the expected charge transfer complex, was obtained in good yield (Eq. 31, Table 4). This reaction involves a metathetic process [19]. 

Wheland RC (1976) Correlation of electrical conductivity in charge-transfer complexes with redox potentials, steric factors, and heavy atom effects. J Am Chem Soc 98 3926-3930... 

In another approach, the fact that crystalline monomeric charge transfer complexes exhibit electrical conductivity led to preparation of polymeric charge transfer complexes. These can be obtained from a polymeric electron donor and a monomeric election acceptor or from a polymeric acceptor and a monomeric donor, the former type being the more common, These polymers are not crosslinked and some are soluble, but their conductivities are generally low,... 

Tellurapyranyl-4//-tellurapyrones 34 with TCNQ form charge-transfer complexes with a composition of 1 1 (R = Ph), 1 2, and 2 3 (R = Me). No individual crystalline complex was isolated in the reaction of TCNQ with 2,2, 6,6 -tetra-terf-butyltellurapyranyl-4//-tellurapyrone (83TL539). The oxidation potentials and electric conductivities of these complexes were measured, the latter being found to be relatively low as compared to most other charge-transfer complexes formed by TCNQ (83TL539 85T4853). 

With TCNQ in a solution of dimethylformamide (DMFA) the dimer 102 forms the 1 1 charge-transfer complex 103 (83IZV690). The crystal structure of 103 is represented by stacked alternate layers of the molecules of TCNQ and 102, the latter adopting a nonplanar conformation. The average distance between the layers is 3.37 A. The electrical conductivity measured for a monocrystal of the charge-transfer complex of 102-TCNQ is 10-7 ohm 1cm l. 

Wakayama, N., Hirooka, T. Effect of Chemisorption of Hydrogen on Electrical Conductivity of Perylene-Cesium Charge-Transfer Complexes. J. Catalysis <9, 383 (1967) ... 

Artificial bilayer lipid membranes (BLM) have an electrical conductivity of k = 10-14-10-12 S cm-1, less than cell membranes by a factor of 106. The conductivity is increased to physiological levels with the introduction of electron acceptors or proteins in the artificial membranes that form charge transfer complexes with the lipids, as for solid state lipids11. 

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