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Meso-Free Boron(III)subchlorin and Its μ-Oxo Dimer with Interacting Chromophores
Brijesh Chandra1, Rahul Soman1, B Sathish Kumar1
1School of Chemistry, University of Hyderabad, Hyderabad 500046, India.
Abstract:
Meso-free B(III)subchlorin 1 has been realized exclusively for the first time from meso-ethoxycarbonyl-substituted tripyrrane along with the first subchlorin dimer 2 as its μ-oxo analogue via a facile one-pot approach. The subchlorin is highly stable toward oxidation; hence, it was not contaminated with the corresponding subporphyrin analogue 3. The subchlorin (56%) and its dimer (30%) exhibit singlet oxygen generation ability for the first time. The B-O-B dimer displays strong exciton coupling between the two macrocycles.
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