Family of carboxylate- and nitrate-diphenoxo triply bridged dinuclear Ni(II)Ln(III) complexes (Ln = Eu, Gd, Tb, Ho, Er, Y): synthesis, experimental and theoretical magneto-structural studies, and single-molecule magnet behavior

Inorganic Chemistry
Enrique ColacioEuan K Brechin

Abstract

Seven acetate-diphenoxo triply bridged M(II)-Ln(III) complexes (M(II) = Ni(II) and Ln(III) = Gd, Tb, Ho, Er, and Y; M(II) = Zn(II) and Ln(III) = Ho(III) and Er(III)) of formula [M(μ-L)(μ-OAc)Ln(NO(3))(2)], one nitrate-diphenoxo triply bridged Ni(II)-Tb(III) complex, [Ni(μ-L)(μ-NO(3))Tb(NO(3))(2)]·2CH(3)OH, and two diphenoxo doubly bridged Ni(II)-Ln(III) complexes (Ln(III) = Eu, Gd) of formula [Ni(H(2)O)(μ-L)Ln(NO(3))(3)]·2CH(3)OH have been prepared in one pot reaction from the compartmental ligand N,N',N"-trimethyl-N,N"-bis(2-hydroxy-3-methoxy-5-methylbenzyl)diethylenetriamine (H(2)L). Moreover, Ni(II)-Ln(III) complexes bearing benzoate or 9-anthracenecarboxylate bridging groups of formula [Ni(μ-L)(μ-BzO)Dy(NO(3))(2)] and [Ni(μ-L)(μ-9-An)Dy(9-An)(NO(3))(2)]·3CH(3)CN have also been successfully synthesized. In acetate-diphenoxo triply bridged complexes, the acetate bridging group forces the structure to be folded with an average hinge angle in the M(μ-O(2))Ln bridging fragment of ~22°, whereas nitrate-diphenoxo doubly bridged complexes and diphenoxo-doubly bridged complexes exhibit more planar structures with hinge angles of ~13° and ~2°, respectively. All Ni(II)-Ln(III) complexes exhibit ferromagnetic interactions between Ni(II...Continue Reading

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Citations

May 25, 2012·Inorganic Chemistry·Verónica GómezJean-Pierre Costes
May 18, 2013·Inorganic Chemistry·Vadapalli ChandrasekharJean-Pascal Sutter
Jan 21, 2015·Inorganic Chemistry·Kong-Qiu HuHui-Zhong Kou
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Jun 10, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Yan-Qiong SunYi-Ping Chen
May 28, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Itziar OyarzabalEnrique Colacio
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Oct 6, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·José RuizEnrique Colacio
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Feb 23, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Jean-Pierre CostesWolfgang Wernsdorfer

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