spectroscopic study of the interaction between tcnq and cryptand 222 in chloroform solution

the interaction between 4, 7, 13, 16, 21, 24 - hexaoxa-1,10 - diazabicyclo [8.8.8] hexacosane (c222) and 7,7,8,8- teracyanoquinodimethane (tcnq) has been studied in chloroform at 25°c. the results indicate a two step mechanism. at the first step, two adducts (assign as p1 and p2) are formed through equilibrium reactions. in continue and through nonequilibrium reactions the adducts are converted to a final product (assign as p3). based on the comparison of the spectra of c222-tcnq mixture with that of na-18c6-tcnq mixture, the c222+tcnq¯, c222+tcnq¯tcnqo and (c222+)2(tcnq¯)2 are suggested as the p1, p2, and p3, respectively. ir specra of c222 and tcnq are compared with the spectrum of solid 1:1 tcnq-c222 complex and the effect of complexation on absorption bands are discussed.