Crystal structure of a p-tert-butylcalix[8]arene – N-methyl-morpholine complex

✍ Scribed by Mecca, Tommaso; Consoli, Grazia Maria Letizia; Geraci, Corrada; Camalli, Mercedes; Campi, Gaetano; Spagna, Riccardo

• Book ID: 111671464
• Publisher: Oldenbourg Wissenschaftsverlag
• Year: 2009
• Tongue: English
• Weight: 190 KB
• Volume: 224
• Category: Article
• ISSN: 2194-4946
• DOI: 10.1524/zkri.2009.1142

✦ Synopsis

Abstract

p-tert-Butyl-calix[8]arene crystallizes with six molecules of N-methyl-morpholine in a triclinic lattice, space group __P__1 with a = 12.142(3) Å, b = 16.596(4) Å, c = 17.211(2) Å, α = 83.72(2)°, β = 80.66(2)°, γ = 69.55(2)°, Z = 1. The formation of hydrogen bonds with two molecules of N-methyl-morpholine, induces the calix[8]arene skeleton to adopt a chair-like conformation in which two 3/4-cone moieties are oriented above and below the mean molecular plane, respectively. The other four solvent molecules per unit cell simply fill the interstitial voids in a “like-tubular” solid state assembly built by p-tert-butylcalix[8]arene molecules piled along the a-axis direction.