title: Two polymorphs of a beta-lactam (trans-13-azabicyclo[10.2.0]tetradecan-14-one). Concomitant crystal polymorphism and isostructurality.
abstract: Two polymorphs of trans-13-azabicyclo[10.2.0]tetradecan-14-one display a unique example of isostructurality, differing only in the orientation of a given hydrogen bond with respect to the beta-lactam bond. This slight difference can be attributed to the twofold rotation of the carbocyclic macroring of C2 symmetry, which in the crystal structure is hardly noticeable.
authors.affiliation: Institute of Structural Chemistry, Chemical Research Center, Hungarian Academy of Sciences, PO Box 17, Budapest 114, H-1525, Hungary.
authors.forename: László
authors.initials: L
authors.lastname: Fábián
authors.forename: Alajos
authors.initials: A
authors.lastname: Kálmán
authors.forename: Gyula
authors.initials: G
authors.lastname: Argay
authors.forename: Gábor
authors.initials: G
authors.lastname: Bernáth
authors.forename: Zsuzsanna Cs
authors.initials: ZC
authors.lastname: Gyarmati