Add time:09/03/2019 Source:sciencedirect.com
A novel calix[4]arene derivative, 26,28-bis(cyanomethoxy)-25,27-dihydroxycalix[4]arene (1), was synthesized and its crystal structure has been determined. The crystals, obtained by recrystallization from acetone, are triclinic, space group P-1, with a=10.1160(17)Å, b=11.996(2)Å, c=13.148(2)Å, and α=63.331(3)°, β=74.392(4)°, γ=85.077(4)°. As compared with a similar compound, 5,11,17,23-tetra-tert-butyl-26,28-bis(cyanomethoxy)-25,27-dihydroxycalix[4]arene (2), compound 1 shows a different configuration of the 1,3-bis(cyanomethoxy) groups attached to the lower rim.
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