Cu(hfac)2 complexes with Ullman's diradical

Cu(hfac)2 complexes with Ullman's diradical Full article

Journal

New Journal of Chemistry
ISSN: 1144-0546

Output data

Year: 2026, Volume: 50, Number: 37, Pages: 16068–16074 Pages count : 7 DOI: 10.1039/d6nj02512a

Authors

Romanenko Galina ¹ , Fokin Sergey ¹ , Aidakova Kristina ¹ , Morozov Vitaly ¹ , Bogomyakov Artem ^1,2

Affiliations

1	International Tomography Center, SB RAS, Institutskaya Str., 3A, 630090, Novosibirsk, Russia
2	Novosibirsk State University, Pirogova Str., 1, 630090, Novosibirsk, Russia

The interaction of copper hexafluoroacetylacetonate Cu(hfac)2 with Ullmann's diradical, i.e., 2,2-bis(1-oxyl-3-oxide-4,4,5,5-tetramethylimidazolinyl) (L), was studied. Methods for the synthesis and preparation of the single crystals of three molecular complexes, [Cu(hfac)2(L)Cu(hfac)2], [Cu(hfac)2L][Cu(hfac)2(H2O)2], and [Cu(hfac)2(L)Cu(hfac)2]·C6H14, and the chain polymer, [Cu(hfac)2L], with trans-coordination of the diradical were developed. It was established that in the [Cu(hfac)2(L)Cu(hfac)2] molecule, a decrease in temperature induces a change in the direction of the elongated axis in the square bipyramid of the Cu atom. An analysis of the magnetic properties of [Cu(hfac)2(L)Cu(hfac)2] and [Cu(hfac)2L] and calculations of the exchange-interaction parameters between Cu and L and within L, carried out for all complexes, showed the dominance of the antiferromagnetic nature of the exchange interactions.

Romanenko G. , Fokin S. , Aidakova K. , Morozov V. , Bogomyakov A.
Cu(hfac)2 complexes with Ullman's diradical
New Journal of Chemistry. 2026. V.50. N37. P.16068–16074. DOI: 10.1039/d6nj02512a WOS Scopus OpenAlex

Submitted:	Jul 4, 2026
Accepted:	Aug 27, 2026
Published online:	Aug 28, 2026

≡ Web of science:	WOS:001873123100001
≡ Scopus:	2-s2.0-105050155172
≡ OpenAlex:	W7204550367