The title compound {4,4',4 )tris(2,6-dimethylphenol)-1,3,5,7-tetraazat
ricyclo (1/1), C27H33NO3.C6H12N4} crystallizes in the space group <R(3
)over bar>, with hydrogen-bonded layers perpendicular to the symmetry
axes. All molecules lie on threefold rotation axes. Each triphenol mol
ecule is hydrogen bonded to three hexamethylenetetramine molecules and
each hexamethylenetetramine molecule is hydrogen bonded to three trip
henol molecules. The hydrogen bonds are similar to those found in othe
r adducts of hexamethylenetetramine with phenols.