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Synthesis and Crystal Structure of Ammonium Cyanimide NH 4 HCN 2
Author(s) -
Roßmeier Thomas,
Korber Nikolaus
Publication year - 2006
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200500348
Subject(s) - ammonium , salt (chemistry) , chemistry , hydrogen bond , ammonia , crystal structure , acceptor , ion , crystallography , atmospheric temperature range , liquid ammonia , inorganic chemistry , crystal (programming language) , single crystal , molecule , organic chemistry , physics , computer science , condensed matter physics , meteorology , programming language
The compound NH 4 HCN 2 ( 1 ) was prepared by the reaction of H 2 CN 2 with liquid ammonia. The ammonium salt 1 was characterized by a low temperature single‐crystal X‐ray structure analysis. The anionic part of the structure consists of HCN 2 − anions, which are connected via N–H···N bonds (H···N distance: 2.47Å, DHA: 165°). The N–H···N hydrogen bonds of the ammonium ion to the anions range from 2.00 to 2.14Å (DHA = Donor···Acceptor angles: 165–176°), all N–H···N interactions together give rise to a three‐dimensional network. 1 decomposes quantitatively to dicyandiamide at room temperature.