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Unique Inclusion Properties of Crystalline Powder p-tert-Butylthiacalix[4]arene toward Alcohols and Carboxylic Acids

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journal contribution
posted on 01.07.2011, 00:00 by Naoya Morohashi, Shintaro Noji, Hiroko Nakayama, Yasutaka Kudo, Shinya Tanaka, Chizuko Kabuto, Tetsutaro Hattori
Powdery crystals of p-tert-butylthiacalix[4]arene (2) selectively include EtOH from 1:1 mixtures of MeOH–EtOH and EtOH–PrOH, and EtCO2H from HCO2H–EtCO2H. On the other hand, no acid is included from HCO2H–MeCO2H, even though MeCO2H is included from the neat acid. The origins of these phenomena are discussed based on X-ray analysis of inclusion crystals prepared separately by crystallization.

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