Synthesis, X-ray structure and magnetic properties of the apically functionalized monocapped cobalt(II) tris-pyridineoximates possessing SMM behaviour

Alexander S Belov; Svetlana A Belova; Nikolay N Efimov; Veronika V Zlobina; Valentin V Novikov; Yulya V Nelyubina; Yan V Zubavichus; Yan Z Voloshin; Alexander A Pavlov

doi:10.1039/d2dt04073e

Synthesis, X-ray structure and magnetic properties of the apically functionalized monocapped cobalt(II) tris-pyridineoximates possessing SMM behaviour

Dalton Trans. 2023 Mar 7;52(10):2928-2932. doi: 10.1039/d2dt04073e.

Authors

Alexander S Belov^{1

2}, Svetlana A Belova^{1

2}, Nikolay N Efimov¹, Veronika V Zlobina², Valentin V Novikov^{3

4}, Yulya V Nelyubina^{2

4}, Yan V Zubavichus⁵, Yan Z Voloshin^{1

2}, Alexander A Pavlov^{2

4

6}

Affiliations

¹ Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., 119991 Moscow, Russia. alex90pavlov@mail.ru.
² Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova st., 119334 Moscow, Russia.
³ Moscow Institute of Physics and Technology, National Research University, Institutsliy per. 9, Dolgoprudny, 141700 Moscow Region, Russia.
⁴ BMSTU Center of National Technological Initiative "Digital Material Science: New Material and Substances", Bauman Moscow State Technical University, 2nd Baumanskaya st. 5, 105005, Moscow, Russia.
⁵ Synchrotron Radiation Facility SKIF, G.K. Boreskov Institute of Catalysis of the Siberian Branch of the Russian Academy of Sciences, 1 Nikolskii pr., 630559 Koltsovo, Russia.
⁶ National Research University Higher School of Economics, 101000 Moscow, Russia.

PMID: 36811361
DOI: 10.1039/d2dt04073e

Abstract

The title cobalt(II) pseudoclathrochelate complexes possess an intermediate trigonal prismatic-trigonal antiprismatic geometry. As follows from PPMS data, they exhibit an SMM behaviour with Orbach relaxation barriers of approximately 90 K. Paramagnetic NMR experiments confirmed a persistence of these magnetic characteristics in solution. Therefore, a straightforward apical functionalization of this 3D molecular platform for its targeted delivery to a given biosystem can be performed without substantial changes.