title: An elusive vinyl radical isolated as an appended unit in a five-coordinate Co(iii)-bis(iminobenzosemiquinone) complex formed via ligand-centered C-S bond cleavage.
abstract: Redox-active ligand H4Pra(edt(AP/AP)) experienced C-S bond cleavage during complexation reaction with Co(OAc)2·2H2O in the presence of Et3N in CH3OH in air. Thus, formed complex 1 was composed of two iminobenzosemiquinone radicals in its coordination sphere and an unprecedented stable tethered-vinyl radical. The complex has been characterized by mass, X-ray single crystal, X-band EPR, variable-temperature magnetic moment measurements and DFT based computational study.
authors.affiliation: Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India. cmukherjee@iitg.ernet.in.
authors.forename: Prasenjit
authors.initials: P
authors.lastname: Sarkar
authors.affiliation: Department of Physics, School of Physical Sciences, Sikkim University, Gangtok-737102, Sikkim, India.
authors.forename: Archana
authors.initials: A
authors.lastname: Tiwari
authors.affiliation: Department of Chemistry, Birla Institute of Technology and Science (BITS), Pilani-333031, Rajasthan, India.
authors.forename: Amrit
authors.initials: A
authors.lastname: Sarmah
authors.affiliation: Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal - 462 066, Madhya Pradesh, India.
authors.forename: Subhrajyoti
authors.initials: S
authors.lastname: Bhandary
authors.affiliation: Department of Chemistry, Birla Institute of Technology and Science (BITS), Pilani-333031, Rajasthan, India.
authors.forename: Ram Kinkar
authors.initials: RK
authors.lastname: Roy
authors.affiliation: Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India. cmukherjee@iitg.ernet.in.
authors.forename: Chandan
authors.initials: C
authors.lastname: Mukherjee