CRYSTAL-STRUCTURE AND DESOLVATION KINETICS OF A METHANOL INCLUSION COMPOUND OF -9,10-DI-P-TERT-BUTYLPHENYL-9,10-DIHYDROANTHRACENE

The host y-9,10-di-p-tert-butyphenyl-9,10-dihydroanthracene (DDTBDA) f orms a 1:1 inclusion compound with methanol. The crystal structure, th ermal analysis and kinetics of desolvation, using isothermal thermogra vimetry is described. Space group: P (1) over bar, a = 10.036(3)Angstr om b = 12.174 (2), c = 13.294(4) Angstrom, alpha = 69.86(2)degrees, be ta = 70.20 (2) degrees, gamma = 79.09(2)degrees, Z = 2, V = 1430.0(6)( 3), D-c = 1.181 gcm(-3) number of reflections observed with l(rel) >2 sigma l(rel) = 2850, R1(l(rel) > 2 sigma l(rel)) = 0.0482. The extent of reaction, a vs. time curves were deceleratory and were best describ ed by the F1 reaction mechanism. An activation energy of 81(8) kJ.mol( -1)was obtained.