共查询到20条相似文献,搜索用时 15 毫秒
1.
利用水热法合成了标题配合物Cu4(dhbd)2(dpphen)4•2H2O]•8H2O(H4dhbd=2,3-二羟基丁二酸, dpphen=4,7-二苯基-1,10-邻菲咯啉), 通过元素分析、红外光谱、热分析、X射线单晶衍射等技术对其进行了表征. 晶体结构分析表明, 由于水的配位阻断, 2,3-二羟基丁二酸根仅通过单羟基氧桥联两个U形双核亚单元形成具有一个对称中心的双U形四核结构, 其中U型亚单元包含晶体学上不对称的2个Cu(II)原子、1个2,3-二羟基丁二酸根(dhbd)、2个4,7-二苯基-1,10-邻菲咯啉(dpphen)和1个配位H2O分子. 毗邻的四核单元通过配位H2O分子和配位羟基O原子形成的R22(8)型环形氢键桥的连接, 沿a轴方向构建了四核单元交替相连的一维超分子链; 链间籍苯环的π-π堆积作用和晶格水分子氢键链的连接进一步扩展为具有隧道的三维结构. 配合物中呈现了一种2,3-二羟基丁二酸与过渡金属配位的新方式. 变温磁化率研究表明标题配合物具有弱的反铁磁耦合作用. 相似文献
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采用水热法合成了标题配位聚合物{[Cu2(dhbd)(bipy)2]•10H2O}n (H4dhbd=2,3-二羟基丁二酸, bipy=2,2'-联吡啶), 通过元素分析、红外光谱、热分析、X射线单晶衍射等技术对其进行了表征.配合物属单斜晶系, 空间群C2/c, a=2.1965(4) nm, b=1.0671(2) nm, c=1.3662(3) nm, β=93.50(3)°, Z=4, R=0.0388.晶体的基本构建基元包含10个结晶H2O分子和由两个Cu(II)原子、一个采用双二齿螯合配位的2,3-二羟基丁二酸根、两个2,2'-联吡啶形成具有C2旋转轴的U形双核单元, 相邻的两个方向相反的U形双核单元通过双羧基O桥联形成沿c轴延伸的一维链; 链间籍C—H…O和O—H…O氢键扩展为三维结构.配合物中呈现了一种2,3-二羟基丁二酸与过渡金属配位的新方式. 相似文献
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合成了铜(II)与羟基丁二酸和2,2'-联吡啶形成的配位聚合物{[Cu(malate)(2,2'-bipy)]•3H2O}∞ (其中malate=羟基丁二酸根, 2,2'-bipy=2,2'-联吡啶), 通过X射线衍射测定了单晶结构, 并进行了元素分析、红外光谱、紫外光谱、热分析等研究. 配合物属单斜晶系, 空间群P2(1)/c; 晶胞参数: a=0.70132(10) nm, b=1.9730(3) nm, c=1.18998(16) nm, β=94.551(3)°; Z=2; 最终偏离因子R=0.0483. 配合物中每个铜(II)原子与来自2,2'-联吡啶的两个氮原子和两个羟基丁二酸根的三个氧原子配位, 形成畸变的三角双锥结构单元. 每个羟基丁二酸根以R构型方式桥联两个三角双锥结构单元, 沿a轴方向无限延伸形成一维链. 两条平行链以面对面的方式重叠, 彼此吡啶环之间存在强的(-(相互作用, 加之C吡啶环—H…O羧基弱相互作用形成新颖的梯状双链结构, 比邻的梯状双链又通过分子间O羟基-H…O羧基氢键沿a轴方向共同构筑了具有隧道的三维结构. 相似文献
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合成了铜(II)与羟基丁二酸和2,2'-联吡啶形成的配位聚合物{[Cu(malate)(2,2'-bipy)]•3H2O}∞ (其中malate=羟基丁二酸根, 2,2'-bipy=2,2'-联吡啶), 通过X射线衍射测定了单晶结构, 并进行了元素分析、红外光谱、紫外光谱、热分析等研究. 配合物属单斜晶系, 空间群P2(1)/c; 晶胞参数: a=0.70132(10) nm, b=1.9730(3) nm, c=1.18998(16) nm, β=94.551(3)°; Z=2; 最终偏离因子R=0.0483. 配合物中每个铜(II)原子与来自2,2'-联吡啶的两个氮原子和两个羟基丁二酸根的三个氧原子配位, 形成畸变的三角双锥结构单元. 每个羟基丁二酸根以R构型方式桥联两个三角双锥结构单元, 沿a轴方向无限延伸形成一维链. 两条平行链以面对面的方式重叠, 彼此吡啶环之间存在强的(-(相互作用, 加之C吡啶环—H…O羧基弱相互作用形成新颖的梯状双链结构, 比邻的梯状双链又通过分子间O羟基-H…O羧基氢键沿a轴方向共同构筑了具有隧道的三维结构. 相似文献
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N-苯甲酰苯丙氨酸(BpheO)与Cu(bpy)Cl2发生取代反应,在水中合成了双核铜(Ⅱ)配合物[Cu2(BpheO)4(bpy)2]·2H2O(bpy:2,2′-联吡啶)。晶体属三斜晶系,P1空间群,晶胞参数:a=10.681(2)?,b=12.320(2)?,c=16.525(2)?;α=110.23(1)°,β=76.98(1)°,γ=105.49(1)°,V=1945.0(6)?3,Z=1,F(000)=786,Dc=1.291 g/cm3, μ=0.61 mm-1。Cu与bpy的二个氮原子和BpheO的三个氧原子构成五配位略有畸变的四方锥多面体。经元素分析、IR、ESR和TG-DTA对配合物的性质进行了研究。 相似文献
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在乙腈溶液中, 由混合价三核锰配合物[Mn3O(ClCH2COO)6(py)2]•(H2O) (py为吡啶)与2,2′-联吡啶(bipy)反应合成了混合价(Mn3IIIMnII)四核锰配合物[Mn4O2(ClCH2COO)7(bipy)2]•H2O. 采用元素分析、红外光谱、热分析和X射线单晶衍射法确定了其组成和结构. 标题化合物晶体属于三斜晶系, 空间群P-1, 晶胞参数: a=0.89854(13) nm, b=1.4027(2) nm, c=1.9037(3) nm, α=93.518(3)°, β=96.736(3)°, γ=94.875(3)°, V=2.3680(6) nm3, Z=2, Dc=1.734 g/cm3, F(000)=1238, GOF=1.036, R1=0.0592, wR2=0.1162 [I>2σ(I)]. 在标题化合物中, 配位结构单元中心为一蝶型[Mn4(μ3-O)2]7+多核簇, 含有2个Mn3(μ3-O)单元, 具有近似C2对称轴. 4个Mn离子均为六配位, 外围配体为7个氯乙酸根和2个2,2′-联吡啶, 处于变形的八面体环境. 变温磁化率研究表明标题化合物在整体上表现为反铁磁性耦合作用, 但在低温下的磁相互作用较为复杂. 相似文献
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一维链状配位聚合物[M(H2bpb)(H2O)4](SO4)2·6H2O[M=Zn(Ⅱ),Cu(Ⅱ)]的合成及晶体结构表征 总被引:3,自引:0,他引:3
设计并合成了一个含吡啶基团的柔性配体:N,N′-Bis(3-pyridylmethyl)-1,4-benzenedimethylamine(bpb)。通过bpb与硫酸锌及硫酸铜反应得到了两个新型具有一维链状结构的配位聚合物:[M(H2bpb)(H2O)4](SO4)2·6H2O[M=Zn(Ⅱ) 1,Cu(Ⅱ) 2]。X-射线晶体结构测定表明,这两个 相似文献
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在水溶液中合成了离子型配合物[Ni(phen)2(H2O)2][Ni(PDC)2]•7H2O (H2PDC=吡啶-2,6-二甲酸, phen=1,10-菲啰啉). 通过元素分析、红外光谱、单晶X射线衍射以及热重分析对配合物进行了表征. 晶体数据解析表明, 化合物属于三斜晶系, 空间群为P1, a=1.0092(4) nm, b=1.4599(6) nm, c=1.4933(5) nm, α=73.982(2)°, β=78.652(2)°, γ=75.184(3)°, V=2.0256(13) nm3, Z=2, F(000)=1004, μ=1.014 mm-1, R1=0.0538, wR2=0.1493. 配合物中的结晶水分子形成一个(H2O)12水簇, (H2O)12水簇通过氢键连接为二维水网, 最终构成三维超分子网络. 相似文献
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在乙腈溶液中, 由混合价三核锰配合物[Mn3O(ClCH2COO)6(py)2]•(H2O) (py为吡啶)与2,2′-联吡啶(bipy)反应合成了混合价(Mn3IIIMnII)四核锰配合物[Mn4O2(ClCH2COO)7(bipy)2]•H2O. 采用元素分析、红外光谱、热分析和X射线单晶衍射法确定了其组成和结构. 标题化合物晶体属于三斜晶系, 空间群P-1, 晶胞参数: a=0.89854(13) nm, b=1.4027(2) nm, c=1.9037(3) nm, α=93.518(3)°, β=96.736(3)°, γ=94.875(3)°, V=2.3680(6) nm3, Z=2, Dc=1.734 g/cm3, F(000)=1238, GOF=1.036, R1=0.0592, wR2=0.1162 [I>2σ(I)]. 在标题化合物中, 配位结构单元中心为一蝶型[Mn4(μ3-O)2]7+多核簇, 含有2个Mn3(μ3-O)单元, 具有近似C2对称轴. 4个Mn离子均为六配位, 外围配体为7个氯乙酸根和2个2,2′-联吡啶, 处于变形的八面体环境. 变温磁化率研究表明标题化合物在整体上表现为反铁磁性耦合作用, 但在低温下的磁相互作用较为复杂. 相似文献
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过渡金属-碱土金属铜钙四核配合物Cu2Ca2L2(H2O)6·2H2O的合成和晶体结构 总被引:1,自引:2,他引:1
The transition metal and alkaline earth metal tetranuclear complex Cu2Ca2L2(H2O)6·2H2O where H4L represents the Schiff base N-3-carboxylsalicylideneglycylglycine was prepared and its crystal structure was determined by the single-crystal X-ray diffraction method at room temperature. It crystallizes in the monoclinic system, space group C2/c. The lattice parameters are a=2.128 2(2) nm, b=1.231 73(14) nm, c=1.32342(15) nm, β=93.619(2)°, Mr=939.81, Dc=1.803Mg·m-3, F(000)=1 928, Z=4 with R1=0.046 6. Each copper atom is coordinated by two nitrogen atoms, one carboxylate oxygen atom and one phenolic oxygen atom, in a square-planner manner. And each calcium atom is coordinated by three water oxygen atoms, three carboxylate oxygen atoms and one phenolic oxygen atom in a distorted pentagonal bipyramid. Two pentagonal bipyramids are connected by two carboxyl groups. CCDC: 239969. 相似文献
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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(SQUID)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P1。在配合物1中,2个1,2,3-三氮唑-4,5-二羧酸配体利用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。 相似文献
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在水溶液中合成了离子型配合物[Ni(phen)2(H2O)2][Ni(PDC)2]•7H2O (H2PDC=吡啶-2,6-二甲酸, phen=1,10-菲啰啉). 通过元素分析、红外光谱、单晶X射线衍射以及热重分析对配合物进行了表征. 晶体数据解析表明, 化合物属于三斜晶系, 空间群为P1, a=1.0092(4) nm, b=1.4599(6) nm, c=1.4933(5) nm, α=73.982(2)°, β=78.652(2)°, γ=75.184(3)°, V=2.0256(13) nm3, Z=2, F(000)=1004, μ=1.014 mm-1, R1=0.0538, wR2=0.1493. 配合物中的结晶水分子形成一个(H2O)12水簇, (H2O)12水簇通过氢键连接为二维水网, 最终构成三维超分子网络. 相似文献
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A copper(Ⅱ) complex [Cu2(m-MBA)4(2,2′-bipy)2(H2O)]·H2O with m-methylbenzoic acid (m-MBA), 2,2′-bipyridine (2,2′-bipy) and water molecule has been synthesized by means of hydrothermal way and characterized. Crystal data for this complex: monoclinic, space group C2/c, a=2.591 8(5) nm, b=1.414 2(3) nm, c=1.790 8(4) nm, β=131.80(3)°, V=4.893 3(17) nm3, Dc=1.379 g·cm-3, Z=4, F(000)=2 104 , Final GooF=1.034, R1=0.065 6, wR2=0.197 6. The crystal structure shows that two neighboring copper(Ⅱ) ions are linked together by two bridging-chelating m-methylbenzoic acid groups, one bridging water molecule, forming a cage structure and the Cu(Ⅱ)-Cu(Ⅱ) bond distance is 0.366 7 nm. Each copper(Ⅱ) ion is coordinated with two nitrogen atoms of one 2,2′-bipyridine molecule and four oxygen atoms from three m-methylbenzoic acid molecules and one water molecule, repectiveley, forming a distorted octahedral coordination geometry. The cyclic voltammetric behavior of the Complex was also investigated. CCDC: 648619. 相似文献
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The coordination polymer [Zn(HCOO)2(H2O)2]∞ has been synthesized using hydrothermal method and characterized by X-ray single crystal diffraction, elemental analysis, FTIR spectroscopy and TG-DTG analyses. The coordination polymer crystallizes in monoclinic, P21/c space group with crystal parameters of α=0.8688(1) nm, b= 0.7143(6) nm, c=0.9305(2) nm, β=97.61(5)°, V=0.5724(2) nm^3, Z=4, μ(Mo Kα)=42.50 cm^-1. The polymer features with two kinds of zinc centers: one is hexa-coordinated by four water ligands, two oxygen atoms of two formates and the other is coordinated by six oxygen atoms of six formates. By the formates as space linkers, three-dimensional frameworks were formed. Based on thermal analyses, thermal decomposition mechanisms were predicted that at the first step the polymer lost two coordination water molecules and at the second step lost two formates companied by the formation of some kinds of materials. 相似文献
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[Cu(TO)2(H2O)4](PA)2 was prepared by mixing the aqueous solution of 1,2,4-triazol-5-one(TO) and Cu(PA)2. The molecular structure and crystal structure of the title complex was determined by X-ray single crystal diffraction method. The crystal is triclinic, space group with a=0.7321(1)nm,b=0.7474(2)nm,c=1.3649(3)nm;α=88.65(2)°,β=85.63(1)°,γ=63.35(1)°;V=0.6655(2)nm3,Z=1. The Cu2+ coordinated with two TO molecule through its 2-nitrogen atom and four water molecules and showed an octahedral configuration. 相似文献
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The complex {[Co(4,4′-bpy)(H2O)4](Fum)·4H2O}n(where 4,4′-bpy = 4,4′-bipyridine and Fum = fumarate) was synthesized and characterized by X-ray diffraction. The complex consists of one-dimensional chains containing cobalt(Ⅱ) ions bridged by 4,4′-bpy molecules. The six-coordination of Co2+ is achieved by means of four water molecules. The fumarate is not coordinated to cobalt ion while it forms hydrogen bonds with coordinated and non-coordinated water molecules and extends the structure into three-dimensional hydrogen bonding network. CCDC: 190488. 相似文献
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一维链状配位聚合物[Cu3(TFSSB)2·(H2O)4·4H2O]n的合成和晶体结构 总被引:4,自引:0,他引:4
The title complex [Cu3(TFSSB)2·(H2O)4·4H2O]n (TFSSB=taurine 3-formylsalicylic schiff base) was synthesized by TFSSB and copper(Ⅱ) acetate monohydrate in ethanol solution and the crystal structure was determined by X-ray diffraction method. The crystal belongs to monoclinic system, space group P21 / n,with cell parameters: a=0.927 9(6) nm, b=1.173 0(2) nm, c=1.471(2) nm, β=106.96(2)°, and V=1.531(2) nm3, Z=2, Dc=1.890 g·cm-3, μ=2.291 mm-1, F(000)=882, R1=0.025 9, wR2=0.065 9. The Cu1 is five-coordinate, the Cu2 is four-coordinate. CCDC: 253298. 相似文献
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The new complex formulated [CU(HDPC)2]·(HOx)2·6H2O(HDPC- is pyridine-2,6-dicarb-oxylate,Hoxis 8-Hydroxyquindine) has been synthesized and the crystal structure was determined by X-ray diffraction .The crystal structure of the complex belongs to monoclinic system with space group C2/c. a=18.423(3)Å, b=10.384(2)Å,c=19.139(2)Å, α=γ=90°, β=111.050(10)°, V=3417.0(9)Å3, Z=4, Dc=1.544Mg·m-3, μ=0.722mm-1. In the crystal Cu(Ⅱ) ion is six coordinated to form a distorted octahedron. 相似文献
20.
ZnO, 丙二酸及4,4'-bipy按物质的量之比1∶3∶0.3溶于H2O和DMF混合溶剂中(体积比4∶1), 形成的无色溶液在50 ℃反应 3 d, 得到了标题化合物{[Zn2(mal)2(4,4'-bipy)(H2O)2]•2(H2O)0.25}∞ (mal=丙二酸根), 对其进行了元素分析、红外光谱和X射线衍射表征, 测定了晶体结构. 该聚合物属单斜晶系, P21/n空间群, a=0.71215(16) nm, b=1.8685(4) nm, c=0.73890(17) nm, β=91.486(5)°, V=0.9829(4) nm3, Z=4, Dc=1.811 g/cm3, Mr=268.03, F(000)=542, μ=25.02 cm-1. 最终偏离因子R1=0.0499, wR2=0.1374. 该化合物中Zn原子和三个丙二酸根中的4个O原子、一个水分子和4,4'-bipy的一个N原子配位, 形成的ZnNO5八面体通过4,4'-bipy和丙二酸根桥联, 组成一种新颖的三维多孔结构, 其孔道中充填游离水分子. 此外还研究了该聚合物的热性质. 相似文献