Methyl 9-diethylamino-2,2-bis(4-methoxyphenyl)-2H-benzo[h]chromene-5-carboxylate
2011
Crystal Structure of a New Photochromic Material
publication
Evidence: moderate
Author Information
Author(s): Kim Moon-Hwan, Park Hee-Moon, Kim Chong-Hyeak
Primary Institution: Korea Research Institute of Chemical Technology
Hypothesis
The study investigates the crystal structure of methyl 9-(dimethylamino)-2,2-bis(4-methoxyphenyl)-2H-benzo[h]chromene-5-carboxylate as a new photochromic material.
Conclusion
The compound exhibits a specific arrangement of its molecular groups that contributes to its photochromic properties.
Supporting Evidence
- The compound's methyl carboxylate and dimethylamino groups are almost coplanar with the naphthopyran ring system.
- The dihedral angle between the methyl carboxylate and dimethylamino groups is very small, indicating a close spatial arrangement.
- The pyran ring has an envelope conformation, which is important for its chemical properties.
Takeaway
Scientists studied a new chemical compound that can change color when exposed to light, which could be useful for making special glasses.
Methodology
The compound was synthesized and its crystal structure was analyzed using X-ray diffraction.
Digital Object Identifier (DOI)
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