Article: Weak ferromagnetism in chiral diamond-like neutral networks: Mn(2-pymS)2 and Co(2-pymS)2 (2-pymSH = 2-mercaptopyrimidine)

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TitleWeak ferromagnetism in chiral diamond-like neutral networks: Mn(2-pymS)2 and Co(2-pymS)2 (2-pymSH = 2-mercaptopyrimidine)
AuthorsZhang, J1 2 4
Gao, S4
Zhang, XX3
Wang, ZM4
Che, CM1
KeywordsBridging ligands
Chemical formulae
Complex 1
Critical temperatures
Diamond-like
Issue Date2012
PublisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/dalton
CitationDalton Transactions, 2012, v. 48 n. 9, p. 2626-2631 [How to Cite?]
DOI: http://dx.doi.org/10.1039/c2dt11738j
AbstractThe reactions of 2-mercatopyrimidine with MCl(2) (M = Mn(2+) or Co(2+)) in solvothermal conditions result single crystals of Mn(2-pymS)(2)1 and Co(2-pymS)(2)2. The two complexes both have the diamond-like topology frameworks, which could be traced back to the similar way of pyrimidine rings acting as the asymmetric bridging ligands. Interestingly, although they have similar chemical formulas, structural analysis by single-crystal X-ray diffraction studies reveals that the sulfur atoms play different roles in 1 and 2. For 1, the Mn ion lies in a distorted octahedral environment bonded to four nitrogen atoms and two sulfur atoms, whereas the Co ion in a distorted tetrahedral environment only coordinates to nitrogen atoms of pyrimidine ligands in the case of Co(2-pymS)(2)2. More interestingly, although magnetic measurements for both complex 1 and 2 indicate long range magnetic ordering and spin canting below the critical temperature (20 K for 1 and 42.9 K for 2), a hysteresis loop can be observed even at 40 K, which is just below the T(C) for complex 2, which is distinctly harder than 1.
ISSN1477-9226
2011 Impact Factor: 3.838
2011 SCImago Journal Rankings: 0.254
DOIhttp://dx.doi.org/10.1039/c2dt11738j
ReferencesReferences in Scopus
DC Field
Value
dc.contributor.authorZhang, J
dc.contributor.authorGao, S
dc.contributor.authorZhang, XX
dc.contributor.authorWang, ZM
dc.contributor.authorChe, CM
dc.date.accessioned2012-10-08T03:23:57Z
dc.date.available2012-10-08T03:23:57Z
dc.date.issued2012
dc.description.abstractThe reactions of 2-mercatopyrimidine with MCl(2) (M = Mn(2+) or Co(2+)) in solvothermal conditions result single crystals of Mn(2-pymS)(2)1 and Co(2-pymS)(2)2. The two complexes both have the diamond-like topology frameworks, which could be traced back to the similar way of pyrimidine rings acting as the asymmetric bridging ligands. Interestingly, although they have similar chemical formulas, structural analysis by single-crystal X-ray diffraction studies reveals that the sulfur atoms play different roles in 1 and 2. For 1, the Mn ion lies in a distorted octahedral environment bonded to four nitrogen atoms and two sulfur atoms, whereas the Co ion in a distorted tetrahedral environment only coordinates to nitrogen atoms of pyrimidine ligands in the case of Co(2-pymS)(2)2. More interestingly, although magnetic measurements for both complex 1 and 2 indicate long range magnetic ordering and spin canting below the critical temperature (20 K for 1 and 42.9 K for 2), a hysteresis loop can be observed even at 40 K, which is just below the T(C) for complex 2, which is distinctly harder than 1.
dc.description.natureLink_to_subscribed_fulltext
dc.identifier.citationDalton Transactions, 2012, v. 48 n. 9, p. 2626-2631 [How to Cite?]
DOI: http://dx.doi.org/10.1039/c2dt11738j
dc.identifier.doihttp://dx.doi.org/10.1039/c2dt11738j
dc.identifier.epage2631
dc.identifier.hkuros205151
dc.identifier.issn1477-9226
2011 Impact Factor: 3.838
2011 SCImago Journal Rankings: 0.254
dc.identifier.issue9
dc.identifier.pmid22266787
dc.identifier.scopuseid_2-s2.0-84863261190
dc.identifier.spage2626
dc.identifier.urihttp://hdl.handle.net/10722/168649
dc.identifier.volume48
dc.languageeng
dc.publisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/dalton
dc.publisher.placeUnited Kingdom
dc.relation.ispartofDalton Transactions
dc.relation.referencesReferences in Scopus
dc.subjectBridging ligands
dc.subjectChemical formulae
dc.subjectComplex 1
dc.subjectCritical temperatures
dc.subjectDiamond-like
dc.titleWeak ferromagnetism in chiral diamond-like neutral networks: Mn(2-pymS)2 and Co(2-pymS)2 (2-pymSH = 2-mercaptopyrimidine)
dc.typeArticle
Author Affiliations
  1. The University of Hong Kong
  2. Chinese Academy of Sciences
  3. Hong Kong University of Science and Technology
  4. Peking University