TY - JOUR

T1 - 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)

AU - Ovcharenko, Victor

AU - Fursova, Elena

AU - Letyagin, Gleb

AU - Morozov, Vitaly

AU - Bogomyakov, Artem

AU - Romanenko, Galina

N1 - This investigation was financially supported by the Russian Science Foundation (grant 23-13-00014). Публикация для корректировки.

PY - 2023

Y1 - 2023

N2 - 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.

AB - 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.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85176097310&origin=inward&txGid=f5434cdc91e0230eae885b94d2c46512

UR - https://www.mendeley.com/catalogue/d6d112d4-27fc-3111-8b7a-2f3b84169540/

U2 - 10.1039/d3ce00912b

DO - 10.1039/d3ce00912b

M3 - Article

VL - 25

SP - 6194

EP - 6203

JO - CrystEngComm

JF - CrystEngComm

SN - 1466-8033

IS - 44

ER -