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Two Heterometallic Ionic Compounds with Isolated [3d] and [4f] Complex Units: Field‐Induced Single‐Ion Magnet (SIM) Behavior Observed from a Mononuclear Dysprosium(III) Complex
Author(s) -
Nayak Sanjit,
Novitchi Ghenadie,
Hołyńska Małgorzata,
Dehnen Stefanie
Publication year - 2014
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.201402114
Subject(s) - chemistry , dysprosium , lanthanide , magnetic relaxation , crystallography , cationic polymerization , magnetization , ion , single crystal , relaxation (psychology) , hydrogen bond , inorganic chemistry , magnetic field , molecule , polymer chemistry , social psychology , psychology , physics , organic chemistry , quantum mechanics
Two new complexes, [Fe 3 (μ 3 ‐O)(inicH) 6 (H 2 O) 3 ][Gd(NO 3 ) 6 ] · (NO 3 ) 4 · n H 2 O ( 1 ) and [Fe 3 (μ 3 ‐O)(inicH) 6 (H 2 O) 3 ][Dy(NO 3 ) 5 (H 2 O)] · (NO 3 ) 5 · n (H 2 O) ( 2 ) with two isolated complex moieties, were generated when isonicotinic acid was treated with iron(III) nitrate and the corresponding lanthanide(III) nitrate in water. The structures were determined by single‐crystal X‐ray diffraction studies. In these compounds, the anionic lanthanide complexes are encapsulated by trinuclear [Fe 3 (μ 3 ‐O)(inicH) 6 (H 2 O) 3 ] 7+ cationic cluster units, which is facilitated by hydrogen‐bonding interactions. Investigation of the magnetic properties reveals that 2 shows slow relaxation of magnetization at low magnetic field ( H dc = 1.0 kOe), with an energy barrier of 23 K originating from a single [Dy(NO 3 ) 5 (H 2 O)] 2– anion.