 | Acta Crystallographica Section B Acta Crystallographica Section B STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS |
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![[Figure 9]](og5057fig9mag.jpg)
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Figure 9
Schematic drawings of intramolecular steric hindrances for the SA molecules with (a) ortho-di-tert-butyl groups and (b) ortho-diisopropyl groups in the aniline rings. The distance ranges between the N atom and the nearest methyl C atoms of iPr/tBu were included (Fukuda et al., 2003  ). (c) Steric hindrance between the methyl group at the ortho position and the phenol group of the neighbouring molecule. There is an unusually short contact between the OH and the CH3 groups in a non-photochromic crystal with ortho-dimethyl groups in the aniline rings, the C⋯O distance being 3.204 (3) Å (Fukuda et al., 2003). |
![[Figure 9]](og5057fig9.jpg)
| STRUCTURAL SCIENCE CRYSTAL ENGINEERING MATERIALS |
ISSN: 2052-5206
