Open AccessCyanide complex of 1,3,5-trinitrobenzene in nonaqueous solvents
Author(s) -
A. R. Norris
Publication year - 1967
Publication title -
canadian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.323
H-Index - 68
eISSN - 1480-3291
pISSN - 0008-4042
DOI - 10.1139/v67-440
Subject(s) - chemistry , chloroform , cyanide , molar absorptivity , stability constants of complexes , mole , charge transfer complex , mole fraction , complex formation , equilibrium constant , reaction rate constant , ion , acetone , inorganic chemistry , kinetics , organic chemistry , physics , quantum mechanics , optics
The initial reversible interaction of 1,3,5-trinitrobenzene and cyanide ion has been studied spectrophotometrically in a number of nonaqueous solvents and found to result in the formation of a complex containing 1,3,5-trinitrobenzene and cyanide ion in a 1:1 ratio. At 25.3 °C, the equilibrium constants for complex formation (K) and the molar extinction coefficients (ϵ) of the complex were found to be 1.44 ± 0.15 × 10 5 l mole −1 and 2.24 ± 0.05 × 10 4 l mole −1 cm −1 and 3.35 ± 0.35 × 10 5 l mole −1 and 2.24 ± 0.05 × 10 4 1 mole −1 cm −1 respectively for acetone and chloroform solutions. The second-order rate constant governing formation of the complex in chloroform was found to be 2.25 × 10 2 l mole −1 s −1 at 25.0 °C. On the basis of the visible and infrared absorption data obtained for the complex in chloroform and 1,2-dimethoxy-ethane, the complex is considered to be a Meisenheimer-type complex rather than a "charge-transfer" complex.