Synthesis and Crystal Structure of E-4,4’-Bis(N,N-di-n-butylamino)stilbene

1 INTRODUCTION Two-photon absorption is a subject which attracts fast-growing interest in chemistry, photonics, and biological imaging fields in the past decades1]. The two-photon techniques have wide applications, for example, optical power limiting2], two-photon opti- cal memory3], two-photon confocal imaging4] and up-conversion laser5]. Especially recently, the inte- rest has gradually been focused on studying two- photon initiated photopolymerization (TPIP) and exploring some pe…

Synthesis and Crystal Structure of E-4,4'-Bis(N,N-di-n-butylamino)stilbene

The title compound E-4,4'-bis(N,N-di-n-butylamino)stilbene (abbreviated to BDBAS) was synthesized by a simple and effective solvent-free wittig reaction with a higher yield.Its crystal structure was determined by a four-circle diffractometer.The crystal data: C30H46N2, Mr =434.69, monoclinic, space group P21/n, a = 9.7805(13), b = 14.3249(16), c = 10.0243(16)(。A), a =90.00, β = 98.639(11), γ = 90.00°, V = 1388.5(3)(。A)3, Z = 2, Dc = 1.040 g/cm3, F(000) = 480,μ(MoKa) = 0.059 mm-1, the final R = 0.0778 and wR = 0.2064.The results reveal that the molecule is a completely reverse π-conjugate system.