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Tetranuclear Ru2Ln2 complexes of heavier lanthanides (Gd, Tb, Dy, Ho, Lu) with [RuNO(NO2)4OH]2− anion, combining SMM properties and photoswitchable Ru-NO group. / Kostin, Gennadiy A.; Borodin, Alexander O.; Kuratieva, Natalia V. и др.
в: Inorganica Chimica Acta, Том 479, 01.07.2018, стр. 135-140.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Tetranuclear Ru2Ln2 complexes of heavier lanthanides (Gd, Tb, Dy, Ho, Lu) with [RuNO(NO2)4OH]2− anion, combining SMM properties and photoswitchable Ru-NO group
AU - Kostin, Gennadiy A.
AU - Borodin, Alexander O.
AU - Kuratieva, Natalia V.
AU - Bogomyakov, Artem S.
AU - Mikhailov, Artem A.
N1 - Publisher Copyright: © 2018 Elsevier B.V.
PY - 2018/7/1
Y1 - 2018/7/1
N2 - Five new heterometallic complexes with a {Ln[RuNO(µ-NO2)4(µ3-OH)]2Ln} (Ln = Gd, Tb, Dy, Ho, Lu) core were prepared by the reaction of Na2[RuNO(NO2)4OH] with lanthanide nitrates. Investigation of magnetic properties showed that magnetic interactions between lanthanide ions become apparent at temperatures lower than 40–50 K, while at temperatures higher than 100 K the dependencies of magnetic susceptibility of the complexes are well explained by the presence of two non-interacting paramagnetic centres. Frequency dependencies of magnetic susceptibility for the dysprosium complex in the temperature range 10–30 K revealed single molecule magnet (SMM) properties with a thermally activated slow magnetic relaxation process. The anisotropy barrier is 89.4 cm−1 (112 K) and τ0 = 7.6 × 10−7 s. Irradiation of the Dy2Ru2 complex with blue light (443 nm) at 80 K resulted in the formation of nitrosyl linkage isomers of the RuNO fragment; the Td of reverse isomerisation is 195 K.
AB - Five new heterometallic complexes with a {Ln[RuNO(µ-NO2)4(µ3-OH)]2Ln} (Ln = Gd, Tb, Dy, Ho, Lu) core were prepared by the reaction of Na2[RuNO(NO2)4OH] with lanthanide nitrates. Investigation of magnetic properties showed that magnetic interactions between lanthanide ions become apparent at temperatures lower than 40–50 K, while at temperatures higher than 100 K the dependencies of magnetic susceptibility of the complexes are well explained by the presence of two non-interacting paramagnetic centres. Frequency dependencies of magnetic susceptibility for the dysprosium complex in the temperature range 10–30 K revealed single molecule magnet (SMM) properties with a thermally activated slow magnetic relaxation process. The anisotropy barrier is 89.4 cm−1 (112 K) and τ0 = 7.6 × 10−7 s. Irradiation of the Dy2Ru2 complex with blue light (443 nm) at 80 K resulted in the formation of nitrosyl linkage isomers of the RuNO fragment; the Td of reverse isomerisation is 195 K.
KW - INDUCED METASTABLE STATES
KW - HETEROMETALLIC COMPLEXES
KW - PHOTOCHROMIC CATION
KW - LINKAGE ISOMERS
KW - RUTHENIUM
KW - POLYOXOMETALATE
KW - FAMILY
KW - NI
KW - CO
KW - LN
UR - http://www.scopus.com/inward/record.url?scp=85046123692&partnerID=8YFLogxK
U2 - 10.1016/j.ica.2018.04.006
DO - 10.1016/j.ica.2018.04.006
M3 - Article
AN - SCOPUS:85046123692
VL - 479
SP - 135
EP - 140
JO - Inorganica Chimica Acta
JF - Inorganica Chimica Acta
SN - 0020-1693
ER -
ID: 12948694