Ontology highlight
ABSTRACT:
SUBMITTER: Zheng C
PROVIDER: S-EPMC2968073 | biostudies-literature | 2008 Dec
REPOSITORIES: biostudies-literature
Acta crystallographica. Section E, Structure reports online 20081220 Pt 1
In the title compound, C(21)H(16)O(2), the six crystallographically independent mol-ecules (Z' = 6) all exist in the enolized form. Strong intra-molecular hydrogen bonds are observed: one approximate H-atom-centered O⋯H⋯O hydrogen bond, two tautomeric forms O-H⋯O (three mol-ecules) and O⋯H-O (two mol-ecules). Only one weak inter-molecular C-H⋯O hydrogen bond between two neighboring mol-ecules is observed in the crystal structure. In addition, eight very weak non-conventional inter-molecular C-H⋯ ...[more]