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On the Structure of the Cation N 2 H 7 ⊕ with an NH ċ N Hydrogen Bond in the Monoammonia Adduct of Ammonium Iodide
Author(s) -
Berthold Hans Joachim,
Preibsch Wolfgang,
Vonholdt Elke
Publication year - 1988
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198815241
Subject(s) - adduct , chemistry , hydrogen bond , ammonium iodide , iodide , crystallography , bond length , ammonium , crystal structure , solid state , hydrogen , x ray crystallography , diffraction , inorganic chemistry , molecule , organic chemistry , physics , optics
In spite of the great importance of the NH ċ N hydrogen bridge in chemistry and biochemistry, the solid‐state structure of the simplest system containing this bond, [H 3 NH ċ NH 3 ] ⊕ , was previously unknown. Single crystal X‐ray diffraction studies on NH 4 I · NH 3 have shown that the interaction NH 4 ⊕ċ NH 3 leads to the formation of the cation N 2 H 7 ⊕ . The N N distance determined by least squares refinement is 269(5) pm, somewhat shorter than the equilibrium distance of 273.1 pm calculated in 1982 by Scheiner and Harding .