Two New Supramolecular Assemblies Obtained by Reaction Between Saccharin and Long Chain Diamines

E. E. CASTELLANO; O. E. PIRO; B. S. PARAJÓN-COSTA; E. J. BARAN

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B - A JOURNAL OF CHEMICAL SCIENCES

Verlag

Año: 2009 vol. 64b p. 1041 - 1045

0932-0776

The crystal structures of heptamethylenediammonium bis(saccharinate) monohydrate, [H3N-(CH2)7-NH3](sac)2×H2O (1) and octamethylenediammonium bis(saccharinate) hemihydrate, [H3N-(CH2)8-NH3](sac)2×0.5H2O (2), were determined by single-crystal X-ray diffraction methods. Compound 1 crystallizes in the triclinic space group P`1 with 2 molecules per unit cell and 2 in the monoclinic, space group P21/a with Z = 4. The saccharinate moiety is planar in both compounds presenting bonding characteristics comparable to those found in other saccharinate salts. The ionic crystals are further stabilized by an extensive H-bonding network, which links the anions and cations into an infinite three-dimensional supramolecular assembly. The FTIR spectra of the adducts are briefly discussed in comparison with those of the constituent molecules.