A complex between C-methylcalix[4] resorcinarene and triethylammonium nitrate

The synthesis and crystal structure of the complex formed by the all-cis ep imer of C-methylcalix[4]resorcinarene (1) and triethylammonium nitrate are reported. "1(HNEt3+)(4) . (NO3-)(4)(2)", crystallizes in the monoclinic spa ce group P2(1)/n, a=25.796(2), b= 16.6048(11), c=29.5659(10) Angstrom, beta =94.636(4)degrees, V= 12623(2) Angstrom(3), Z= 8. Refinement led to a final conventional R-1 value of 0.128 for 12428 reflections and 1473 parameters. The resorcinarene displays the usual bowl-type shape, with four hydroxyl p rotons involved in intramolecular hydrogen bonds, whereas the remaining fou r make hydrogen bonds with four bridging nitrate ions, which results in the formation of infinite chains. Those chains are arranged so as to form laye rs, between which the triethylammonium ions and the remaining nitrate ions are hydrogen-bonded one to another.