thirty nine novel 1,2,3,4-tetrahydropyrimidinone (thione)s were subjected to conformational studies. density functional theory at b3lyp/6-31 g* was performed as the computational method of high accuracy. important dihedral angles and bond lengths were investigated and the values obtained were explainable. results of this work confirm a twisted boat tetrahydropyrimidine ring conformation with an...

The Cover Feature illustrates the pathways undergone by ditellurocines from solid state (represented stones) to solution water cascade). Once ditellurocine crystals/stones roll down in cascade, metamorphosis occurs, cubic-like arrangement a caterpillar (less stable chair conformation) then lying butterfly (transition state) and flying (more boat conformation). More information can be found Full...