DC Field | Value | Language |
---|---|---|
dc.contributor.author | Hong, CS | ko |
dc.contributor.author | Son, SK | ko |
dc.contributor.author | Lee, Yoon Sup | ko |
dc.contributor.author | Jun, MJ | ko |
dc.contributor.author | Do, Youngkyu | ko |
dc.date.accessioned | 2008-03-05T07:05:19Z | - |
dc.date.available | 2008-03-05T07:05:19Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 1999-11 | - |
dc.identifier.citation | INORGANIC CHEMISTRY, v.38, no.24, pp.5602 - 5610 | - |
dc.identifier.issn | 0020-1669 | - |
dc.identifier.uri | http://hdl.handle.net/10203/3268 | - |
dc.description.abstract | A hydrogen- and covalent-bonded 3D array, [Mn(bpe)(H2O)(4)](n)(ClO4)(2n)(bpe)(4n)(H2O)(2n) (2) [bpe = 1,2-bis(4-pyridyl)ethane], a covalent-bonded 3D network, [Mn(bpe)(1.5)(H2O)(tp)](n)(H2O), (3) [tp = terephthalate], and a covalent-bonded 2D sheet, [Mn(bpe)(N-3)(2)](n) (4), have been synthesized and characterized by spectroscopic data and single-crystal X-ray diffraction studies. Complex 2 contains two types of packing bpe molecules: One type of bpe molecules (=N31-bpe and symmetry-related bpe) run along the chain direction, and the other type of bpe molecules (=N11-bpe and N21-bpe) are slanted to the chain linked by bridging bpe (=N1-bpe). The chain is coupled with hydrogen bonds via N31-bpe, while hydrogen bonds through packing bpe molecules of N11- and N21-bpe sew the chains, leading to a 3D interlocking network structure. The bpe ligands in 3 have an anti conformation for the bridging bpe and a gauche conformation for the capping bpe with a dihedral angle between the two pyridyl rings of 44.5 degrees. The tp ligand acts as a linker of three metal ions through the unidentate and bridging modes, leading to the formation of a 2D layer. The final molecular dimensionality in 3 is determined from adding bpe ligands to the 2D sheet connected by tp ligands, resulting in a covalent-bonded 3D array where the bridging bpe ligands link the tp-bridged layers. The manganese(II) center in 4 consists of four equatorial azido nitrogen atoms and two axial bpe nitrogen atoms. The one-dimensional chains formed by two azido bridging ligands are interconnected by bpe ligands, each of which has two pyridyl rings with a dihedral angle of 67 degrees, leading to a two-dimensional sheet. Variable-temperature magnetic susceptibility data of 2 and 4 have been fitted to the infinite-chain model (H = -J Sigma S-Ai.SAi+1) derived by Fisher under the molecular field approximation (J '). Obtained exchange parameters are J = -0.083 cm(-1), g = 2.0 for 2 and J = -12.5 cm(-1), g = 2.0, J' = 1.3 cm(-1) for 4. In the case of 3, the magnetic nature was interpreted by the dimer model (H = -JS(1).S-2), affording parameters J = -0.96 cm(-1), g 1.99, J' = -0.005 cm(-1). MO calculations on a hypothetical dimeric unit (NH3)(5)Mn-bpe-Mn(NH3)(5) are discussed to evaluate the magnetic nature for the bpe-bridged system 4. | - |
dc.description.sponsorship | The authors acknowledge financial support from the Korea Research Foundation in the program year of 1997 | en |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | MAGNETOSTRUCTURAL CORRELATIONS | - |
dc.subject | MAGNETIC-BEHAVIOR | - |
dc.subject | S=1 CHAIN | - |
dc.subject | NICKEL(II) | - |
dc.subject | AZIDO | - |
dc.subject | COMPLEXES | - |
dc.subject | NETWORK | - |
dc.subject | SYSTEM | - |
dc.title | High-dimensional manganese(II) compounds with noncovalent and/or covalent bonds derived from flexible ligands: Self-assembly and structural transformation | - |
dc.type | Article | - |
dc.identifier.wosid | 000084047000019 | - |
dc.identifier.scopusid | 2-s2.0-17144430550 | - |
dc.type.rims | ART | - |
dc.citation.volume | 38 | - |
dc.citation.issue | 24 | - |
dc.citation.beginningpage | 5602 | - |
dc.citation.endingpage | 5610 | - |
dc.citation.publicationname | INORGANIC CHEMISTRY | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Lee, Yoon Sup | - |
dc.contributor.localauthor | Do, Youngkyu | - |
dc.contributor.nonIdAuthor | Hong, CS | - |
dc.contributor.nonIdAuthor | Son, SK | - |
dc.contributor.nonIdAuthor | Jun, MJ | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | MAGNETOSTRUCTURAL CORRELATIONS | - |
dc.subject.keywordPlus | MAGNETIC-BEHAVIOR | - |
dc.subject.keywordPlus | S=1 CHAIN | - |
dc.subject.keywordPlus | NICKEL(II) | - |
dc.subject.keywordPlus | AZIDO | - |
dc.subject.keywordPlus | COMPLEXES | - |
dc.subject.keywordPlus | NETWORK | - |
dc.subject.keywordPlus | SYSTEM | - |
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