Title

Crystal and molecular structure of 3,8,12-triethym4-formyl-2/7,13-tri- methyl-1 (15h)-tripyrrinone, a tripyrrolic aldehyde derived from aetiobiliverdin-ivγ

Document Type

Article

Publication Date

1-1-1978

Abstract

The structure of the title compound, a tripyrrolic compound derived from aetiobiliverdin-IVy has been determined from three-dimensional X-ray diffractometer data. The tripyrrolic skeleton shows only small deviations from planarity. Adjacent rings assume theZ-configuration with the nitrogen atoms syn. Bond lengths in the three rings are quite different. No intra- or inter-molecular hydrogen bonding is observed. The compound crystallizes in the orthorhombic space group Pna21 with cell dimensions a = 9.773(2), b = 11.468(2), c = 19.402(3) Â, Z = 4. The structure was solved by direct methods and refined by least-squares techniques to R 0.063 for 1 037 observed reflections. © 1978, Royal Society of Chemistry.

Publication Source (Journal or Book title)

Journal of the Chemical Society, Perkin Transactions 2

First Page

259

Last Page

263

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