Encasing the paramagnetic copper(<scp>ii</scp>)-ion by the ring-contracted corrin ligand of vitamin B<sub>12</sub>
The d<sup>9</sup>-Cu(II)-corrin cupribyrate (Cuby) was synthesized in 93% crystalline yield by rapid chelation of Cu<sup>2+</sup>-ions by the metal-free corrin-ligand of vitamin B<sub>12</sub>. Single crystals of the EPR-active Cuby allowed for the first X-ray structure determination of a Cu-corrin. SCF-calculations provided insights complementary to the experimental data of Cuby and indicated an out-of-plane displacement of the reduced d<sup>10</sup>-Cu(I)-ion, consistent with the observed reductive activation of Cuby towards loss of its Cu-center.
Authors
- Stephan Hohloch (ORCID: https://orcid.org/0000-0002-5353-0801)
- Klaus Wurst (ORCID: https://orcid.org/0000-0002-8774-9051)
- Klaus Roman Liedl (ORCID: https://orcid.org/0000-0002-0985-2299)
- Dennis F. Dinu
- Markus Wiedemair (ORCID: https://orcid.org/0000-0001-8528-3238)
- Bernhard Kräutler (ORCID: https://orcid.org/0000-0002-2222-0587)
- Christoph Kieninger (ORCID: https://orcid.org/0000-0002-2808-6534)
- Marc‐Kevin Zaretzke
- Martin Bröring (ORCID: https://orcid.org/0000-0001-6807-6579)
- Daniel Leitner (ORCID: https://orcid.org/0000-0002-1470-9761)
- L. Peters
Institutions
- Universität Innsbruck (AT)
- Technische Universität Braunschweig (DE)
Publication Details
- Journal
- Chemical Communications
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5cc02129d
- Citations
- 3
- Primary Topic
- Porphyrin Metabolism and Disorders
- Type
- article
- Field-Weighted Citation Impact
- 2.42
Funders
- Austrian Science Fund