A study in Crystal engineering: Solid-state photodimerization of chloro- and methyl-coumarins

✍ Scribed by K. Gnanaguru; G.S. Murthy; K. Venkatesan; V. Ramamurthy

• Book ID: 103028018
• Publisher: Elsevier Science
• Year: 1984
• Tongue: English
• Weight: 366 KB
• Volume: 109
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(84)85730-9

✦ Synopsis

Use of chloro and methyl substitution in crystal cogincerin~ and their interchangeabiiity in terms of mode of packing b;lve been examined in a series of substituted coumarins. Photoreactivity in the solid state has been correlared with the crystallographic structures of these coumarins. The packing of chloro-substituted aromatic compounds has been investigated by analysing the arrangement of 132 compounds. Results substantiate the USC of the chloro group as ;L steering agent and show that the chloro and methyl goups are not always interchangeable.