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Syntheses, structures, and magnetic properties of cyano- and phenoxide-bridged Fe(iii)-Mn(iii) tetrameric assemblies formed by blocked fac-Fe tricyanide with aliphatic rings.
MedLine Citation:
PMID:  23450248     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Three tetranuclear clusters [(TpMe,mt3)Fe(CN)3Mn(L)]2 (, L = 5-Clacphmen; , L = 5-Clsalen; , L = 5-MeOsalen; TpMe,mt3 = hydrotris(3-methyl-4,5-propylene-5-methylpyrazol-1-yl)borate) were prepared by assembling the fac-Fe tricyanide with the corresponding Mn Schiff bases. The assembled molecules are linked by cyanide and phenoxide bridges. Weak π-π contacts between molecules are evident in these clusters. Compounds exhibit slow relaxation of the magnetization. The phenoxide linkers mediate ferromagnetic coupling between the Mn centers, which is ascribed to the long axial Mn-O* length. The overall magnetic exchange coupling nature of the Fe-C[triple bond, length as m-dash]N-Mn route is accounted for by the important structural parameters of bridging pathways such as Mn-Ncyano length, Mn-Ncyano-Ccyano angle, and Ceq-FeMn-Neq (eq = equatorial) torsion angle.
Authors:
Kyung Jin Cho; Dae Won Ryu; Kwang Soo Lim; Woo Ram Lee; Jin Wuk Lee; Eui Kwan Koh; Chang Seop Hong
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-3-1
Journal Detail:
Title:  Dalton transactions (Cambridge, England : 2003)     Volume:  -     ISSN:  1477-9234     ISO Abbreviation:  Dalton Trans     Publication Date:  2013 Mar 
Date Detail:
Created Date:  2013-3-1     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101176026     Medline TA:  Dalton Trans     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Chemistry, Korea University, Seoul 136-713, Korea. cshong@korea.ac.kr.
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