Experimental Crystal data

R factor = 0.020; wR factor = 0.049; data-to-parameter ratio = 19.1. In the title quaternary ammonium salt, C55H61N4 +I, all three N,N-dibenzylethanamine, –(CH2)2N(CH2C6H5)2, groups have different conformations. The N—C—C—N torsion angles are significantly different [89.86 (13), 162.61 (10) and 175.70 (10)] and the dihedral angles between the phenyl rings in these groups are different as well [58.21 (4), 43.73 (4) and 76.72 (5)]. In the crystal, the I anions fill empty spaces between the bulky cations. The cations and anions are linked by weak C—H I interactions, forming a chain along [110]. Related literature For related ligand structures, see: Farrell et al. (2003). For the application of similar ligands coordinating to copper in the catalysis of atom-transfer radical polymerization or clic