Crystal structure ofN′′-(2-ethoxy-2-oxoethyl)-N,N,N′,N′-tetramethyl-N′′-[3-(1,3,3-trimethylureido)propyl]guanidinium tetraphenylborate
2015 ◽
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pp. o1026-o1027
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In the title salt, C16H34N5O3+·C24H20B−, the C—N bond lengths in the cation are 1.3368 (16), 1.3375 (18) and 1.3594 (17) Å, indicating partial double-bond character. 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 CN3plane. In the crystal, weak C—H...O contacts are observed between neighbouring guanidinium ions and between guanidinium ions and tetraphenylborate anions. In addition, C—H...π interactions involving guanidinium H atoms and aromatic rings of the anion are present. The phenyl rings form aromatic pockets, in which the cations are embedded. This leads to the formation of a two-dimensional supramolecular pattern along theabplane.
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