Shin JY. The synthesis and characterization of the octahedral Co
III complex of a pyrrolopyrrolizine derivative formed with dicyanovinylene-bis-(
meso-aryl)dipyrrin.
RSC Adv 2021;
11:2315-2319. [PMID:
35424195 PMCID:
PMC8693670 DOI:
10.1039/d0ra09452h]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 12/15/2020] [Indexed: 01/05/2023] Open
Abstract
A low spin state and diamagnetic CoIII complex 1 possessing pyrrolopyrrolizine ligands formed with dicyanovinylene-bis-(meso-aryl)dipyrrin was synthesized via the thermally activated metalation with CoCl2 and isolated via column chromatography. The nuclear magnetic resonance of complex 1 revealed diamagnetism, thereby confirming the structure of the octahedral CoIII-complex of strong-field ligands. The resulting molecular structure of 1 was elucidated by the X-ray diffraction analysis. An arrangement of two pyrrolizine-ligands for the metal chelation was found in the AB-BA order, which was distinct from the case observed during the formation of bis-NiII-expanded porphyrinoids.
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