Heterometallic MIIRuIII2 compounds constructed from trans-[Ru(Salen)(CN)2]- and trans-[Ru(Acac)2(CN)2]-. Synthesis, structures, magnetic properties, and density functional theoretical study

Wai Fun Yeung, Pui Ha Lau, Tai Chu Lau, Hai Yan Wei, Hao Ling Sun, Song Gao, Zhi Da Chen, Wing Tak Wong

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Abstract

The synthesis, structures, and magnetic properties of four cyano-bridged MIIRuIII2 compounds prepared from the paramagnetic RuIII building blocks, trans-[Ru(salen)(CN) 2]- 1 [H2salen = N,N′- ethylenebis(salicylideneimine)] and trans-[Ru(acac)2(CN) 2]- (Hacac = acetylacetone), are described. Compound 2, {Mn(CH3OH)4[Ru(salen)(CN)2]2} · 6CH3OH·2H2O, is a trinuclear complex that exhibits antiferromagnetic coupling between MnII and RuIII centers. Compound 3, {Mn(H2O)2[Ru(salen)(CN) 2]2·H2O}n, has a 2-D sheetlike structure that exhibits antiferromagnetic coupling between Mn and Ru, leading to ferrimagnetic-like behavior. Compound 4, {Ni(cyclam)[Ru(acac) 2(CN)2]2}· 2CH3OH· 2H2O (cyclam = 1,4,8,11-tetraazacyclotetradecane), is a trinuclear complex that exhibits ferromagnetic coupling. Compound 5, {Co[Ru(acac) 2(CN)2]2}n, has a 3-D diamond-like interpenetrating network that exhibits ferromagnetic ordering below 4.6 K. The density functional theory (DFT) method was used to calculate the molecular magnetic orbitals and the magnetic exchange interaction between RuIII and MII (MnII, NiII) ions.
Original languageEnglish
Pages (from-to)6579-6590
Number of pages12
JournalInorganic Chemistry
Volume44
Issue number19
DOIs
Publication statusPublished - 19 Sep 2005
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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