Tamer El Malah,â¡a Artur Ciesielski,â¡b Luc Piot,b Sergey I. Troyanov,c Uwe Mueller,d Steffen Weidner,e ... data. See. DOI: 10.1039/c1nr11434d. â¡ Both authors contributed equally to this work ... structure is highly conserved in its anti,anti conformation and ..... G. Ungar and V. S. K. Balagurusamy, Science, 1997, 278, 449; (d).