IR AND 13C-NMR SPECTRAL PROPERTIES OF THE LAYERED INCLUSION COMPOUND BIS(THIOUREA)HEXAMETHYLENETETRAMINE

Abstract

The structure of the 1: 2 adduct of hexamethylenetetramine and thiaurea was reanalyzed reinterpreting X-ray diffractian data and providing additianal IR and NMRspectrascapic features. The praduct is thus described as supramalecular commensurate host-guest complex carresponding ta the intercalatian of hexamethylenetetramine in a layered thiaurea matrix. FT-IR spectra evidence a simultaneaus strengthening of bath C-N and C-S bands, that appearing as a pattern characteristic for described layered thiourea matrix. 13CPMAS-NMRspectra of the intercalated hexamethylenetetramine 15 essentially determined by nuclear dipolar magnetic interactions and hast-guest chemical interactions arising from 13C-14N residual dipolar interactian not averaged to zero by MAS-NMRand from the magnetic nan-equivalence of the guest carban atoms caused by the hydrogen bonding interaction with the thiourea matrix .