We consider a new plane problem of the potential theory outside symmetric T-shaped profile. In view symmetry profile, we reduce analyzed to mixed boundary-value in half with perpendicular cut whose solution is constructed by method partial domains use polar coordinates and Mellin integral transformation. The original reduced system two Wiener–Hopf equations completely regular infinite linear al...

In the crystal structure of the title salt, C(10)H(16)N(+)·ClO(4) (-), the 4-butyl-anilinium cation is mirror symmetric, the butyl C atoms and anilinium N atom and 1,4-position C atoms of the benzene ring being located on the mirror plane; the perchlorate anion is also mirror symmetric, with two O atoms and one Cl atom lying on the mirror plane. Trifurcated N-H⋯O hydrogen bonding is observed be...