title: (E)-7-(Pyren-1-yl)hept-6-enoic acid.
abstract: The title compound, C(23)H(20)O(2), is a precursor of a pyrene-based supra-molecular element for non-covalent attachment to a carbon nanotube. The asymmetric unit contains three independent mol-ecules. The carb-oxy-lic acid group in each of these mol-ecules serves as an inter-molecular hydrogen-bond donor and acceptor, generating the commonly observed double O-H⋯O hydrogen-bond motif in an eight-membered ring. Weaker C-H⋯O, π-π [centroid-centroid distance = 3.968 (4) Å] and C-H⋯π inter-actions are also found in the crystal structure.
authors: Department of Chemistry, Nanoscience Center, University of Jyväskylä, PO Box 35, FIN-40014 University of Jyväskylä, Finland.
authors: Arto
authors: A
authors: Valkonen
authors: Tanja
authors: T
authors: Lahtinen
authors: Kari
authors: K
authors: Rissanen
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