CRYSTALLINE 1-1 INCLUSION COMPLEXES BETWEEN A ROOF-SHAPED DIAMIDE HOST AND METHANOL OR PROPIONIC-ACID - CRYSTAL-STRUCTURES AND MODES OF INTERACTION

The crystal structures of two inclusion complexes between anti-N,N'-di-t-butyl-9,10-dihydro-9,10-ethanoanthracene-11,12-dicarboxamide host and methanol [a = 11.8893(4), b = 18.0943(7), c = 12.6322(4) angstrom, beta = 108.47(3)-degrees, P2(1)/c, Z = 4] or propionic acid [a = 11.4580(8), b = 11.7614(9), c = 12.4675(8) angstrom, alpha = 95.37(3), beta = 109.70(3), gamma = 113.26(3)-degrees, P1BAR, Z = 2] as guests have been studied by X-ray diffraction. Closed loops of different sizes, formed via hydrogen-bond interactions between host and guest or between the hosts only, characterize both structures. The crystals with the propionic acid guest consist of hydrogen-bonded host: guest associates with 2:2 stoichiometry, while the methanol inclusion gives rise to infinite hydrogen-bonded chains.