Bhadbhade, MM and Murthy, GS and Venkatesan, K and Ramamurthy, V (1984) Topochemical dimerization of non-parallel double bonds: 7-methoxycoumarin. In: Chemical Physics Letters, 109 (3). pp. 259-263.
1fulltext.pdf - Published Version
Restricted to Registered users only
Download (549Kb) | Request a copy
X-ray crystal structure analysis of 7-methoxycoumarin reveals that the reactive double bonds are rotated by about 65° with respect to each other, the centre-to-centre distance between the double bonds being 3.83 Å. In spite of this unfavourable arrangement, photodimerization occurs in the crystalline state yielding the syn-head-tail dimer as the only product. Lattice energy calculations on ground-state molecules in crystals throw light on the mechanism of the reaction.
|Item Type:||Journal Article|
|Additional Information:||Copyright for this article belongs Elsevier science.|
|Department/Centre:||Division of Chemical Sciences > Organic Chemistry|
|Date Deposited:||10 Feb 2010 05:33|
|Last Modified:||19 Sep 2010 05:38|
Actions (login required)