Document Detail


A magnetically isolated cuprate spin-ladder system: synthesis, structures, and magnetic properties.
MedLine Citation:
PMID:  25030616     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
We synthesized and characterized two magnetically isolated spin ladders, Cu2(CO3)(ClO4)2(NH3)6 () and Cu2(CO3)(ClO4)2(H2O)(NH3)5 (), which are the first examples of carbonate bridging molecular spin ladders. Compounds and form a ladder configuration by stacking a structural unit composed of two Cu(2+) ions and one CO3(2-), where the Cu-O-Cu interactions form the rungs and legs of each ladder and the counter anions (ClO4(-)) occupy the space between the ladders and ensure their magnetic isolation. A S = 1/2 magnetically isolated spin-ladder model with a ladder-rung magnetic interaction J1/kB = 364 K (where J is defined as positive for antiferromagnetic interactions) and a ladder-leg magnetic interaction J2/kB = 27.4 K accurately predicts the temperature dependence of the molar magnetic susceptibility for . The ladder configuration of is similar to that of except that the CO3(2-) is alternately skewed in different directions in the stacked structural unit. Interestingly, this minor structural variation in results in its remarkably different magnetic behavior; the magnetic susceptibility curve of is accurately described by an alternating chain model with J3/kB = 7.26 K and J4/kB = 4.42 K.
Authors:
Xiao Zhang; Sadafumi Nishihara; Yuki Nakano; Erina Yoshida; Chisato Kato; Xiao-Ming Ren; Kseniya Yu Maryunina; Katsuya Inoue
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-7-17
Journal Detail:
Title:  Dalton transactions (Cambridge, England : 2003)     Volume:  -     ISSN:  1477-9234     ISO Abbreviation:  Dalton Trans     Publication Date:  2014 Jul 
Date Detail:
Created Date:  2014-7-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101176026     Medline TA:  Dalton Trans     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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