无机化学学报
無機化學學報
무궤화학학보
JOURNAL OF INORGANIC CHEMISTRY
2010年
5期
801-806
,共6页
双核镍配合物%1,2,3-三氮唑-4,5-二羧酸%晶体结构%氢键%磁性质
雙覈鎳配閤物%1,2,3-三氮唑-4,5-二羧痠%晶體結構%氫鍵%磁性質
쌍핵얼배합물%1,2,3-삼담서-4,5-이최산%정체결구%경건%자성질
dinuclear Ni(Ⅱ) complex%1,2,3-triazole-4,5-dicarboxylic acid%crystal structure%hydrogen bond%magnetic property
双核金属配合物对于生物化学和磁化学都是非常重要的.在本文中,1,2,3-三氮唑-4,5-二羧酸(H3tda)配体和硝酸镍在常温常压下反应得到了1个三氮唑桥联的双核镍配合物[Ni2(Htda)2(H2O)6]·4H2O(1),并通过元素分析、红外光谱、X-射线单晶衍射、热重分析以及超导量子干涉仪(SQUlD)对其晶体结构和磁、热性质进行了表征.晶体数据表明该配合物属三斜晶系,空间群为P(1).在配合物1中,2个1,2,3-三氮唑-4,5-二援酸配体利用2个相邻的氮原子桥联2个金属镍离子形成一个双桥的双核镍配合物.这些双核镍单元又通过体系中存在的大量的氢键相互作用形成了三维超分子骨架.磁性分析显示双核镍单元内镍镍之间存在反铁磁相互作用.
雙覈金屬配閤物對于生物化學和磁化學都是非常重要的.在本文中,1,2,3-三氮唑-4,5-二羧痠(H3tda)配體和硝痠鎳在常溫常壓下反應得到瞭1箇三氮唑橋聯的雙覈鎳配閤物[Ni2(Htda)2(H2O)6]·4H2O(1),併通過元素分析、紅外光譜、X-射線單晶衍射、熱重分析以及超導量子榦涉儀(SQUlD)對其晶體結構和磁、熱性質進行瞭錶徵.晶體數據錶明該配閤物屬三斜晶繫,空間群為P(1).在配閤物1中,2箇1,2,3-三氮唑-4,5-二援痠配體利用2箇相鄰的氮原子橋聯2箇金屬鎳離子形成一箇雙橋的雙覈鎳配閤物.這些雙覈鎳單元又通過體繫中存在的大量的氫鍵相互作用形成瞭三維超分子骨架.磁性分析顯示雙覈鎳單元內鎳鎳之間存在反鐵磁相互作用.
쌍핵금속배합물대우생물화학화자화학도시비상중요적.재본문중,1,2,3-삼담서-4,5-이최산(H3tda)배체화초산얼재상온상압하반응득도료1개삼담서교련적쌍핵얼배합물[Ni2(Htda)2(H2O)6]·4H2O(1),병통과원소분석、홍외광보、X-사선단정연사、열중분석이급초도양자간섭의(SQUlD)대기정체결구화자、열성질진행료표정.정체수거표명해배합물속삼사정계,공간군위P(1).재배합물1중,2개1,2,3-삼담서-4,5-이원산배체이용2개상린적담원자교련2개금속얼리자형성일개쌍교적쌍핵얼배합물.저사쌍핵얼단원우통과체계중존재적대량적경건상호작용형성료삼유초분자골가.자성분석현시쌍핵얼단원내얼얼지간존재반철자상호작용.
The dinuclear metal complexes are important not only for biochemistry but also for magnetochemistry. In this paper, a dinuclear Ni(Ⅱ) complex [Ni2(Htda)2(H2O)6]·4H2O (1) with 1,2,3-triazole-4,5-dicarboxylic acid (H3tda) as ligands has been synthesized and characterized by element analysis, IR spectra, single-crystal X-ray diffraction,thermo gravimetric analysis and superconducting quantum interference device (SQUID). The crystallographic data shows that complex 1 crystallizes in triclinic space group P1 with a=0.721 19(16) nm, b=0.812 81(18) nm, c=0.940 2(2) nm, a=109.526(4)°, β=91.868(4)°, y=103.304(4)°, V=0.501 88(19) nm3, C8H22N6Ni2O18, Mr=607.74, Dc=2.011 g·cm-3,μ(Mo Kα)=l.982 mm-1, F(000)=312, GOF=1.037, Z=1,the final R1=0.045 1 and wR2=0.117 7 for 1>2σ(1). In 1, two 1,2,3-triazole-4,5-dicarboxylic acid ligands bridge two Ni(Ⅱ) ions by two neighboring nitrogen atoms in triazole ring to form a dinuclear Ni(Ⅱ) unit, which is further connected with each others through plenty of hydrogen-bond interactions to construct a three-dimensional (3D) supramoleeular architecture. The magnetic study shows that the antiferromagnetie interactions exist between Ni(Ⅱ) ions in dinuclear Ni(Ⅱ) units. CCDC: 747631.
