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991.
Cobalt(Ⅱ) can form complexes with Hdbm in different environments. Hdbm reacted with cobalt nitrate to give complex 1 [Co(dbm)2·2H2O]. When complex 1 reacted with pyridine, α-stilbazole or 4,4′-bipyridine respectively, complex 2 [Co(DBM)2Py2] (Py=pyridine), 3 [Co(DBM)2Sbz2] (Sbz=α-stilbazole) or 4 [Co(DBM)2BPy]n was obtained in turn through metathetical reaction. The coordination modes are octahedral polyhedrons. In the crystal structures, the two dbms take the plane position and two other donor molecules take the axial position. CCDC: 196070 for complex 2; 186859 for complex 3. 相似文献
992.
1 INTRODUCTION Supramolecular chemistry is based on the notion of creating novel structural and functional extended systems using noncovalent interactions between prefabricated molecular or ionic building blocks[1]. More recently, the design of supramolecular architec- tures by self-assembly of small building blocks has become a major research area[2, 3] due to their poten- tial applications in many fields such as selective clathration[4, 5], molecular recognition[6, 7], catalysis[8, 9] a… 相似文献
993.
994.
3,6-二(3-甲吡啶-2)-s-四嗪(DMPTZ,Ⅱ)和Ce(NO3)3.6H2O反应生成了一个新的配体L: N-(3-甲吡啶-2)-亚胺甲基-1-(3-甲吡啶-2)腙和一个新的单核配合物[Ce(L)(NO3)2(H2O)3].NO3 (Ⅲ). 用IR和X单晶衍射对化合物Ⅲ的单晶进行了分析. 该晶体属三斜晶系, 空间群为P-1, a = 7.133(4), b = 11.139(2), c = 14.572(3)Å, α= 102.13(2), β=99.81(3), γ=91.10(3), Z = 2, V = 1113.6(7) nm3, μ=2.123 mm-1, F(000)=630. 结果表明, 中心原子Ce3+具有十配位, 其中配体L是三齿配, 提供了三个配位N原子, 且Ce与三个配位N原子在同一平面; 在平面骨架的上方有三分子的H2O参与配位, 提供了三个配位O原子; 在下方有两个NO3-参与配位, NO3-是双齿配位, 提供了四个配位O原子, 且这四个O原子不在同一个平面上. 对DMPTZ在Ce(Ⅲ)的条件下的分解机理进行了简要的讨论. 相似文献
995.
The title complex has been synthesized by the reaction of silicotungstic acid, 1,10-phenanthroline (phen) monohydrate and cupric acetate. The crystal structure belongs to triclinic system, space group P1 with a=1.158 46(15) nm, b=1.658 8(2) nm, c=1.664 4(2) nm, α=82.090(2)°, β=76.001(2)°, γ=86.531(2)°, and V=3.072 6(7) nm3, Dc=3.887 g·cm-3, Z=2, F(000)=3 196. R1=0.086 7, wR2=0.185 8. The structure shows that the copper(Ⅱ) atom is coordinated with two nitrogen atoms from the one phen and three oxgygen atoms from three water, forming a distorted square-pyramid configuration The cyclic voltametric behavior of the complex is also reported. CCDC: 298807. 相似文献
996.
ZHOU Hui DU Shao-Wu 《结构化学》2007,26(6):711-716
The self-assembly reactions of MIICl2 (M = Ni, Co) with the flexible bix ligand [bix = 1,4-bis(imidazole-1-ylmethyl)benzene] yielded a 2D network [NiII(bix)2Cl2]n 1 and a 1D chain [CoII(bix)Cl2]n 2. Their crystal structures have been determined by X-ray single-crystal diffraction analysis. Complex 1 characters a two-dimensional grid-type structure and crystallizes in monoclinic, space group P21/c with a = 7.7231(7), b = 12.7787(9), c = 13.9374(13) , β = 105.419(4)o, C28H28Cl2N8Ni, Mr = 606.19, Ζ = 2, V = 1326.0(2) 3, Dc = 1.518 g/cm3, μ = 0.969 mm-1, F(000) = 628, R = 0.0429 and wR = 0.0783 for 2503 observed reflections (I > 2σ(I)). Compound 2 is a one-dimensional chain and crystallizes in orthorhombic, space group Pbca with a = 11.3696(6), b = 10.2128(6), c = 14.4943(9) , C14H14Cl2CoN4, Mr = 368.12, Z = 4, V = 1683.01(17) 3, Dc = 1.453 g/cm3, μ = 1.334 mm-1, F(000) = 748, R = 0.0317 and wR = 0.0800 for 1778 observed reflections (I > 2σ(I)). Magnetic properties of the title complexes were also investigated. 相似文献
997.
三氯化钇与茚基钠以 1∶2摩尔比于THF中 ,在 5 0℃下反应 ,歧化生成了离子型配合物 [(C9H7) 3 Yb] 2 Cl[Na·6THF](I) .X射线结构分析表明 ,配合物I是由阴离子 {[(C9H7) 3 Yb] 2 Cl}-及阳离子 [Na·6THF] 组成的离子对 ,阴离子由一个氯桥把两个 (C9H7) 3 Yb基团连接在一起 .配合物 [(C9H7) 3 Yb) 2 Cl] [Na·6THF]为三斜晶系 ,P1空间群 ,晶胞参数 ,a =1.0 682 (2 )nm ,b =1 2 687(3 )nm ,c=1 2 869(2 )nm ,α =87 2 2 3 (1)° ,β =81 75 5° ,γ =88 2 17° ,V =1 72 73 (1)nm3 ,Z =1.配合物I的结构用重原子法确定 ,用full matrixleast squares法修正 ,一致性因子为R =0 0 62 ,Rw =0 0 72 .配合物 {[(C9H7) 3 Yb] 2 Cl}[Na·6THF]与金属钠反应 ,生成 (C9H7) 2 Yb·2THF (II) .配合物II的分子结构经过了X射线的表证 . 相似文献
998.
999.
1000.
Reaction of COC12.6H20 with equimolar bis(3,5-dimethylpyrazolyl)methane (dmpzm) produced a mononuclear adduct [Co(dmpzm)Cl2] (1). Treatment of 1 with sodium dicyanamide (dca) afforded a polymeric complex [Co(dmpzm)(μ-dca)2]∞ (2). 1 and 2 were characterized by elemental analysis, IR spectra, thermogravimetric analysis and single-crystal X-ray diffraction. The cobalt atom in 1 adopts a distorted tetrahedral coordination geometry, bound to two N atoms of one dmpzm and two Cl atoms. Complex 2 has a 2D brick-wall network (extended along the bc plane) in which the { [Co(dmpzm)(μ-dca)]2} n^2n+ chains are interconnected by pairs of μ-dca anions along the c axis. The magnetic properties of 1 and 2 were also investigated. 相似文献