title: Carbatriphyrin(3.1.1)-A Distinct Coordination Approach of BIIIto Generate Organoborane and Weak C-H⋅⋅⋅B Interactions.
abstract: Carbatriphyrin(3.1.1) is the structural isomer of biphenylcorrole and achieved by switching the bonding mode of biphenyl unit from 3,3' to 2,3' which turns the corrole into a triphyrin analogue. The presence of a m-arene unit in the framework restricts the overall conjugation and thus leads to a nonaromatic macrocycle. The protonation experiments afford a trifluoroacetate ion complex. The coordination chemistry reveals that the bottom approach of boron(III) ion forms weak C-H⋅⋅⋅B interactions, however a top approach stabilizes the organoborane complex and the product distribution relies on the basicity of the proton scavengers. These results are unambiguously confirmed by single-crystal X-ray analyses.
authors.affiliation: School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, 752050, Odisha, India.
authors.forename: B
authors.initials: B
authors.lastname: Adinarayana
authors.affiliation: School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, 752050, Odisha, India.
authors.forename: Ajesh P
authors.initials: AP
authors.lastname: Thomas
authors.affiliation: School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, 752050, Odisha, India.
authors.forename: Prerna
authors.initials: P
authors.lastname: Yadav
authors.affiliation: School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, 752050, Odisha, India.
authors.forename: Vanga
authors.initials: V
authors.lastname: Mukundam
authors.affiliation: School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, 752050, Odisha, India.
authors.forename: A
authors.initials: A
authors.lastname: Srinivasan
keywords: carba derivatives; macrocycles; noncovalent interactions; organoboranes; triphyrins