NMR-SPECTRA AND THE STRUCTURE OF THE GUEST SUBLATTICE IN THE MONOCATIONIC FORMS OF CLINOPTILOLITE AND HEULANDITE

The H-1 NMR spectra of the hydrated monocationic forms of clinoptiloli te M(6)[Al6Si30O72]. nH(2)O (M = Li Na, IZ Cs, NH4; n = 12-22) and M(3 )'[Al6Si30O72]. nH(2)O (M' = Mg Ca, ST, Ba; n = 20-24) and heulandite M(8)[Al8Si28O72]. 21H(2)O (M = Na, K) are divided into three types dif fering in the symmetry of censors of magnetic dipole-dipole interactio ns of protons in zeolite water molecules. On the basis of model calcul ations it is shown that water molecules in the Cs, K, and Ba forms of clinoptilolite and the K form of heulandite are ordered in structural positions.