Abstract: Bimolecular complexes [ML2(MeOH)2][ML2(EtOH)2], where M is CoII, NiII or CoII0.5NiII0.5 and L is a deprotonated enaminoketone 4-(3′,3,3′-trifluoro-2′-oxopropylidene)-2,2,5,5-tetramethyl-3-imidazolidin-1-oxyl, were found to be isolated in the solid phase from a solution containing MeOH and EtOH in the ratio 1 : 10. Their solids have a layered-polymer structure due to hydrogen bonds between the OH-groups of the coordinated ROH molecules and nitroxide groups of the neighboring [ML2(ROH)2] molecules. The peculiar crystal structures of [ML2(MeOH)2][ML2(EtOH)2] have ordered alternation of methanol- and ethanol-containing supramolecular layers. Detailed crystallochemical analysis showed that during the formation of [ML2(MeOH)2][ML2(EtOH)2] crystals, the MeOH containing layer is significantly deformed in comparison with the [ML2(MeOH)2] structure. This indicates that the ethanol-containing layer determines the crystal formation, while the {ML2(MeOH)2} layer “adjusts” to it. Magnetochemical study of the bimolecular complexes [ML2(MeOH)2][ML2(EtOH)2] revealed magnetic ordering at low temperatures.

Cite: Ovcharenko V. , Fursova E. , Letyagin G. , Morozov V. , Bogomyakov A. , Romanenko G.
Alternating [ML2(MeOH)2] and [ML2(EtOH)2] layers in low-temperature ferromagnets [ML2(MeOH)2][ML2(EtOH)2] (M = CoII, NiII or CoII0.5NiII0.5)
CrystEngComm. 2023. V.25. N44. P.6194-6203. DOI: 10.1039/d3ce00912b WOS Scopus OpenAlex

Dates:

Submitted:	Sep 14, 2023
Published online:	Nov 1, 2023
Published print:	Nov 28, 2023

Identifiers:

Web of science:	WOS:001094138000001
Scopus:	2-s2.0-85176097310
OpenAlex:	W4388112852

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Web of science	1

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