Acta Cryst. (2012). E68, o3500
[ doi:10.1107/S160053681204860X ]

N,N,N',N'-Tetramethylguanidinium tetraphenylborate

I. Tiritiris

Abstract: In the title salt, C₅H₁₄N₃⁺·C₂₄H₂₀B^-, the C-N bond lengths in the central CN₃ unit are 1.3322 (11), 1.3385 (12) and 1.3422 (12) Å, indicating partial double-bond character. The central C atom is bonded to the three N atoms in a nearly ideal trigonal-planar geometry [N-C-N angles = 119.51 (8), 119.81 (9) and 120.69 (8)°] and the positive charge is delocalized in the CN₃ plane. The bond lengths between the N atoms and the terminal methyl groups all have values close to a typical single bond [1.4597 (12)-1.4695 (13) Å]. The crystal packing is caused by electrostatic interactions between cations and anions.

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