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The Influence of d‐f Coupling on Slow Magnetic Relaxation in Ni II Ln III M III (Ln = Gd, Tb, Dy; M = Cr, Fe, Co) Clusters
Author(s) -
Zhou Hongbo,
Dong Rongyao,
Wang Zhuowei,
Wu Lei,
Liu Yashu,
Shen Xiaoping
Publication year - 2019
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201900263
Subject(s) - chemistry , crystallography , magnetic relaxation , relaxation (psychology) , cyanide , coupling (piping) , inductive coupling , magnetization , inorganic chemistry , materials science , magnetic field , physics , psychology , social psychology , quantum mechanics , metallurgy
Five heterotrimetallic 3d‐3d′‐4f complexes, [Ni(L)Dy(H 2 O) 4 ][Cr(CN) 6 ] · 3H 2 O ( 1 ), [Ni(L)Dy(H 2 O) 4 ][Fe(CN) 6 ] · 3H 2 O ( 2 ), [Ni(L)Dy(H 2 O) 4 ][Co(CN) 6 ] · 3H 2 O ( 3 ), [Ni(L)Tb(H 2 O) 4 ][Co(CN) 6 ] · 3H 2 O ( 4 ), and [Ni(L)Gd(H 2 O) 4 ][Co(CN) 6 ] · 3H 2 O ( 5 ) (H 2 L = N,N‐ethylenebis(3‐methoxysalicylaldiimine)), were prepared and characterized to study the influence of d‐f coupling on the magnetic behavior of such Ni II Ln III M III (Ln = Gd, Tb, Dy; M = Cr, Fe, Co) clusters. The X‐ray analysis revealed clearly their heterotrimetallic trinuclear structures, in which the [Ni(L)Ln(H 2 O) 4 ] 3+ moiety is further coordinated by one cyanide nitrogen atom from [M(CN) 6 ] 3– , forming the peculiar trinuclear Ni II Tb III M III entity. The magnetic measurements revealed the typical slow magnetic relaxation expected for these 3d–3d′–4f systems. Interestingly, the slow magnetic relaxation is highly affected by the d‐f magnetic coupling, which indeed highlights the importance of tuning the d‐f magnetic coupling to obtain improved magnetic properties.