CAJ | 학술논문

由于在信息存储、量子计算等方面存在潜在的应用,单分子磁体受到越来越多的国内外化学家、物理学家和材料学家的极大关注. 使用多齿螯合配体设计更高能垒的单分子磁体化合物是目前该领域研究的关键,本文使用两个多齿螯合配体2,2-二吡啶酮和三羟甲基乙烷与醋酸锰在乙腈溶液里反应,然后结晶、过滤,最终得到一个锰钠混合金属双聚体配合物,并对该化合物进行单晶结构、红外、磁性等表征. 单晶结构分析表明,该化合物属于单斜晶系P2∕c空间群,六个中心锰原子和四个钠离子形成一个单体,其中六个锰原子形成一个正八面体,四个钠离子连接在正八面体交替的四个面上,两个单体又通过两个氧原子桥连起来. 磁性研究表明,该化合物中锰原子之间为反铁磁性耦合.
유우재신식존저、양자계산등방면존재잠재적응용,단분자자체수도월래월다적국내외화학가、물이학가화재료학가적겁대관주. 사용다치오합배체설계경고능루적단분자자체화합물시목전해영역연구적관건,본문사용량개다치오합배체2,2-이필정동화삼간갑기을완여작산맹재을정용액리반응,연후결정、과려,최종득도일개맹납혼합금속쌍취체배합물,병대해화합물진행단정결구、홍외、자성등표정. 단정결구분석표명,해화합물속우단사정계P2∕c공간군,륙개중심맹원자화사개납리자형성일개단체,기중륙개맹원자형성일개정팔면체,사개납리자련접재정팔면체교체적사개면상,량개단체우통과량개양원자교련기래. 자성연구표명,해화합물중맹원자지간위반철자성우합.
Due to the potential applications in high-density information storage and in quantum computing, single molecule magnets have been attracted widely interests by chemists, physical scientists and material sci-entists from all over the world. Currently, the crucial thing is designing novel single molecule magnets com-plexes with higher blocking temperature using multidentate chelating ligands. Two chelating ligands of di-2-pyridyl ketone, 1,1,1-tris (hydroxymethyl)ethane were reacted with manganese acetate in MeCN, and a manganese-sodium mixed metal dimer cluster was obtained after crystallized and filtered, finally it was char-acterized by X-ray single crystal structural diffraction, infrared spectrum and magnetic investigation. Struc-tural investigation indicates that the complex crystallizes in the triclinic P2∕c space group; in the complex, a monomer contains six manganese ions and four sodium ions, in which six manganese ions form an regular oc-tahedron with four sodium ions located on the four alternating faces of the regular octahedron, then two monomers in the complex are linked by two oxygen atoms. Magnetic studies indicate that the overall antiferro-magnetic coupling interactions between Mn3+ions within the structure are present.