10-(2-DIETHYLAMINOPROPYL)PHENOTHIAZINIUMYL TETRAOXORHENATE(VII) - ETHOPROPAZINIUMYL CATION PERRHENATE SALT, (C19H25N2S)+[REO4]- - SYNTHESIS AND CRYSTAL-STRUCTURE

An unusual ethopropaziniumyl cation salt of perrhenate has been prepared and characterized using elemental analysis, molar conductance, and u.v.-vis., i.r., and nmr spectral data. The crystal and molecular structure of the new ionic compound, (EPH)[ReO4] where EPH+ is protonated ethopropazine, has been elucidated by single-crystal X-ray crystallography. Crystals are monoclinic, space group P2(1)/c, in a unit cell with lattice parameters a = 10.866(3), b = 12.242(2), c = 16.01(1)degrees. Beta = 109.00(1)degrees, volume = 2014(2)angstrom3. The structure was solved using heavy-atom methods and refined to R = 0.024 with 3181 observed reflections. In the crystal, the ethopropaziniumyl cation, which is protonated at the terminal diethylamino nitrogen, is linked to the ReO4- ion through hydrogen bonding.