Conformationally Flexible Bis(9-fluorenylidene)porphyrin Diradicaloids,Angewandte Chemie International Edition

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Conformationally Flexible Bis(9-fluorenylidene)porphyrin Diradicaloids
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2017-09-18 11:39:00 , DOI: 10.1002/anie.201707480
Hejian Zhang ₁ , Hoa Phan ₁ , Tun Seng Herng ₂ , Tullimilli Y. Gopalakrishna ₁ , Wangdong Zeng ₁ , Jun Ding ₂ , Jishan Wu ₁

Affiliation

Protonation with a twist! A quinoidal bis(9-fluorenylidene)porphyrin and its Ni^II complex showed closed-shell saddle-shaped geometry in the crystalline state but they can be thermally populated to paramagnetic triplet species through geometric change. Protonation also dramatically changes the conformation and physical properties.

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