Vanadyl phosphate intercalated with dimethyl sulfoxide

The dimethyl sulfoxide (DMSO) intercalate was prepared by replacing 2-propanol molecules in the corresponding VOPO4 intercalate with DMSO. The intercalate contains one DMSO molecule per formula unit. The diffractogram of the intercalate contains, besides of sharp (00l) reflections, a number of (hkl) diffraction lines giving evidence of a regular structure. The character of the bonding between the guest and the host layers in the DMSO intercalate was studied by infrared and Raman spectroscopies. The arrangement of the DMSO molecules in the interlayer space was simulated using a Cerius2 software package combined with a Supramol program. The DMSO molecules are anchored with their oxygens to the vanadium atoms of the host layer with the V–ODMSO distance 2.503 Å. The DMSO molecules are tilted to the host layer so that the angle of V⋯O=S is 135°. The structure of the DMSO intercalate is compared with that of the acetone intercalate studied earlier.