 | Acta Crystallographica Section B Acta Crystallographica Section B STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS |
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![[Figure 3]](na0118fig3mag.jpg)
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Figure 3
ORTEPII (Johnson, 1976  ) drawings of the asymmetric units. Thermal ellipsoids are drawn at the 40% probability level. The molecular conformation is stabilized by intramolecular hydrogen bonds (dashed lines) and attractive dipole–dipole interactions. Note the conformational changes around Csp3—Csp2 bonds that take place upon substitution. The Ts,a conformation of BOH1 (two independent molecules) and BOH2 illustrates a change in conformation when the carboxyl group is replaced by a primary (BOH1) or secondary (BOH2) amide function. The Ts,s conformation of BOH3 and the Ta,s conformation of BN13 and BN23 illustrate that tertiary amides adopt the s conformation independent of the substituent at the other end of the molecule. The Ta,a conformation of BOM1 and the Ts,s conformation of BOM3 show that the methylester group adjusts its orientation to mimic the conformation adopted by the other terminal group. |
![[Figure 3]](na0118fig3.jpg)
| STRUCTURAL SCIENCE CRYSTAL ENGINEERING MATERIALS |
ISSN: 2052-5206
