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Citation: Wang Yi-Xuan, Li Hong-Ping, Zhang Fu-Qiang, Zhao Jian-Ping, Dai Ming. A Spectral Study of Intermolecular Hydrogen Bonding for N-methylaniline or Diphenylamine with some Proton Acceptors[J]. Acta Physico-Chimica Sinica, ;1994, 10(03): 217-222. doi: 10.3866/PKU.WHXB19940306 shu

A Spectral Study of Intermolecular Hydrogen Bonding for N-methylaniline or Diphenylamine with some Proton Acceptors

1.
Henan Institute of Chemistry, Zhengzhou 450003

Received Date: 1 October 1992
Available Online: 15 March 1994

Infared Spectra of (N-methylaniline or diphenylamine + one of aprotic sol vents+CCL_4) have been measured at 298.15 K. The results show that stretching frequen cies v_(NH) of the associated complex A—H…B depend on the proton-accepting abilities of B, and the frequency shifts show a nearly linear dependence on electron donor num ber (DN) and also on nucleophilicity parameter (B~o). Equilibrium constants of some AB cross-associated complexes have been estimated from IR data. The equilibrium constant values show that diphenylamine as a proton donor is stronger than N-methylaniline. Morever, the related conclusions have been briefly discussed in terms of molecular structure and interactions between unlike molecules.
- N-methylaniline,
- Diphenylamine,
- Aprotic solvent,
- IR spectrum
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