Iron(II) and Cobalt(II) Complexes with 2,6-Bis(1,4-Diphenyl-5-Hydroxy-1H-Pyrazol-3-yl)pyridine: Synthesis, Structures, and Spin States View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2020-05-14

AUTHORS

I. A. Nikovskii, A. V. Polezhaev, D. Yu. Aleshin, E. K. Mel’nikova, P. V. Dorovatovskii, Yu. V. Nelyubina

ABSTRACT

The reactions of 2,6-bis(1,4-diphenyl-5-hydroxy-1H-pyrazol-3-yl)pyridine (L), which is the first representative of a series of 2,6-bis(pyrazol-3-yl)pyridine ligands bearing substituents in positions 1 and 4 of the pyrazol-3-yl ring, with the divalent iron and cobalt salts afford new Со(II) and Fe(II) complexes: [Co(L)2](ClO4)2 (I) and [Fe(L)2](ClO4)2 (II). The compounds are isolated in the individual state and characterized by elemental analysis, NMR spectroscopy, and X-ray diffraction analysis (CIF files CCDC nos. 1967892 (I) and 1967893 (II)). According to the data obtained, the transition metal ion in complexes I and II exists in the high-spin state (S = 3/2 for Co(II) and S = 2 for Fe(II)) in a range of 120–345 K, and the proposed modification of the ligand does not lead to the temperature-induced spin transition in both the solution and crystalline state. More... »

PAGES

317-325

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s1070328420050048

DOI

http://dx.doi.org/10.1134/s1070328420050048

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1127598795


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