In the title salt, C(26)H(29)N(2)(+)center dot Br(-),which may serve as a precursor for N-heterocyclic carbenes, the imidazolidine ring adopts a twist conformation with a pseudo-twofold axis passing through the N-C-N carbon and the opposite C-C bond. The N-C-N bond angle [113.0 (4)degrees] and C-N bond lengths [1.313 (6) and 1.305 (6) angstrom] confirm the existence of strong resonance in this part of the molecule. In the crystal, a C-H center dot center dot center dot Br interaction is present. The dihedral angle between the biphenyl rings is 64.3 (2)degrees and the phenyl rings make angles of 76.6 (3) and 18.5 (3)degrees with the plane of the imidazolidine ring.
C1 [Arslan, Hakan] Fayetteville State Univ, Dept Nat Sci, Fayetteville, NC 28301 USA.
[Arslan, Hakan] Mersin Univ, Fac Pharm, Dept Chem, TR-33169 Mersin, Turkey.
[VanDerveer, Don; Ozdemir, Smail] Clemson Univ, Dept Chem, Clemson, SC 29634 USA.
[Yasar, Sedat] Inonu Univ, Fac Sci & Arts, Dept Chem, TR-44280 Malatya, Turkey.
[Cetinkaya, Bekir] Ege Univ, Fac Sci, Dept Chem, TR-35100 Bornova, Turkey.