STRUCTURE AND IR-SPECTRA OF N,N,N',N'-TETRAAMYL-1,2-DIAMMONIUM-ETHANEDI[HYDROGEN-BIS(PENTACHLOROPHENOLATE)]

The structure of N,N,N',N'-tetraamyl-1,2-diammonium-ethane di[hydrogen -bis(pentachlorophenolate)] has been determined by X-ray diffraction m ethods at two temperatures: 298 K and 110 K. The crystals are triclini c, space group P1BAR, with a = 12.290(7), b = 11.719(7), c = 21.470(14 ) angstrom, alpha = 82.35(6), beta = 81.06(6), gamma = 73.60(7)-degree s, V = 2917(4) angstrom3 at 110 K. Two crystallographically independen t (C22N2H50)2+ cations occupy centres of symmetry. Both cations are co nnected by N+-H...O- hydrogen bonds.with (C6Cl50)- anions. The distanc es between hydrogen bonded N+ and O- atoms are 2.614(7) and 2.637(9) a ngstrom. Furthermore the (C6Cl50)- anions form O-...H-O hydrogen bonds with pentachlorophenol molecules of 2.526(6) and 2.537(6) angstrom O- ...O distances. The ionic character of the O-H...O-...H-N+ hydrogen bo nds has been confirmed by IR spectroscopy.