N,N,N′,N′,N′′-Pentamethyl-N′′-[3-(trimethylazaniumyl)propyl]guanidinium bis(tetraphenylborate) release_hqnv5dxvtjb6vjeqgwtvqbijxy

by Ioannis Tiritiris

Published in Acta Crystallographica Section E by International Union of Crystallography (IUCr).

2013   Volume 69, o292-o292

Abstract

In the crystal structure of the title salt, C<jats:sub>12</jats:sub>H<jats:sub>30</jats:sub>N<jats:sub>4</jats:sub><jats:sup>2+</jats:sup>·2C<jats:sub>24</jats:sub>H<jats:sub>20</jats:sub>B<jats:sup>−</jats:sup>, the C—N bond lengths in the central CN<jats:sub>3</jats:sub>unit of the guanidinium ion are 1.3388 (17), 1.3390 (16) and 1.3540 (17) Å, indicating partial double-bond character in each. The central C atom is bonded to the three N atoms in a nearly ideal trigonal-planar geometry and the positive charge is delocalized in the CN<jats:sub>3</jats:sub>plane. The bonds between the N atoms and the terminal<jats:italic>C</jats:italic>-methyl groups of the guanidinium moiety, all have values close to a typical single bond [1.4630 (16)–1.4697 (17) Å]. C—H...π interactions are present between the guanidinium H atoms and the phenyl C atoms of one tetraphenylborate ion. The phenyl rings form a kind of aromatic pocket, in which the guanidinium ion is embedded.
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Type  article-journal
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Date   2013-01-26
DOI  10.1107/s1600536813001992
PubMed  23424561
PMC  PMC3569815
Wikidata  Q42100763
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