A NEW CRYSTAL FORM OF METHYL BACTERIOPHEOPHORBIDE-ALPHA

Authors
BARKIGIA KM GOTTFRIED DS
Citation
Km. Barkigia et Ds. Gottfried, A NEW CRYSTAL FORM OF METHYL BACTERIOPHEOPHORBIDE-ALPHA, Acta crystallographica. Section C, Crystal structure communications, 50, 1994, pp. 2069-2072
Citations number
33
Categorie Soggetti
Crystallography
Journal title
Acta crystallographica. Section C, Crystal structure communications → ACNP
ISSN journal
01082701
Volume
50
Year of publication
1994
Part
12
Pages
2069 - 2072
Database
ISI
SICI code
0108-2701(1994)50:<2069:ANCFOM>2.0.ZU;2-W
Abstract
The structure of a new crystal form of methyl bacteriopheophorbide a, C36H40N4O6, which does not contain benzene molecules of crystallizatio n, has been determined at 200 K. The molecule is slightly ruffled with maximum displacements from planarity of +/- 0.21 Angstrom in all five rings. The crystal packing is dominated by pi-pi interactions between pyrrole rings I and III of adjacent molecules, which are separated by 3.58 Angstrom.