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. Author manuscript; available in PMC: 2019 Dec 21.
Published in final edited form as: Org Lett. 2018 Dec 11;20(24):8082–8085. doi: 10.1021/acs.orglett.8b03439

Figure 3.

Figure 3.

Internal bond angles (∠) at the two benzyne carbons, reflecting the computed ring distortion of the benzynes 8a-f derived from each of the poly-ynes 6a-f {DFT: [SMD(benzene)//M06-2X/6-311+G(d,p)}.