Mobile F atoms react with NH₃ molecules in an argon matrix at temperatures T = 7 - 35 K. The open-shell NH₂ - HF complex was observed by EPR and infrared spectroscopies as the main product of this reaction. The hyperfine constants of the NH₂ - HF complex a_N = 1,20 mT, a_H = 2,40 mT, and a_F = 0,70 mT were determined from the EPR spectra of samples using NH₃, ¹⁵NH₃ and ND₃ isotopomers. Prominent features of the infrared spectrum of NH₂ - HF are a strongly red-shifted HF stretching mode (DELTA nu approx - 720 cm^-1 relative to that for isolated HF) and strong absorptions at 791 and 798 cm^-1 attributed to HF librational modes in the complex. Quantum chemistry calculations reveal that the hydrogen-bonded NH₂ - HF complex has a planar C_{2 nu} structure and a binding energy of 51 kJ/mol. Calculated hyperfine constants and vibrational frequences of the complex are in good agreement with those observed in the EPR and IR experiments.

  Якщо, ви не знайшли інформацію про автора(ів) публікації, маєте бажання виправити або відобразити більш докладну інформацію про науковців України запрошуємо заповнити "Анкету науковця"