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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.

作者信息

Sarkar Prasenjit, Tiwari Archana, Sarmah Amrit, Bhandary Subhrajyoti, Roy Ram Kinkar, Mukherjee Chandan

机构信息

Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India.

Department of Physics, School of Physical Sciences, Sikkim University, Gangtok-737102, Sikkim, India.

出版信息

Chem Commun (Camb). 2016 Aug 23;52(70):10613-6. doi: 10.1039/c6cc02751b.

DOI:10.1039/c6cc02751b
PMID:27439588
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.

摘要

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