排序方式: 共有98条查询结果,搜索用时 495 毫秒
41.
关于二茂铁基与羰基相连的α,β-不饱和劳酮和硫化氢的亲核加成反应,我们曾有过报导。研究表明,由于二茂铁基的影响使该类加成反应与Michael加成反应规则不同。本文继续研究三茂铁基与烯基相连的α,β-不饱和芳酮和硫化氢的亲核加成反应,制得了四种尚未见报导的β-二茂铁基-β-或α-巯基丙酰基芳烃: 相似文献
42.
Zhu P Pan N Li R Dou J Zhang Y Cheng DY Wang D Ng DK Jiang J 《Chemistry (Weinheim an der Bergstrasse, Germany)》2005,11(5):1425-1432
Reaction of heteroleptic bis(phthalocyaninato) lanthanide compounds [(Pc)M{Pc(OC8H17)8}] [H2Pc=unsubstituted phthalocyanine; H2Pc(OC8H17)8 = 2,3,9,10,16,17,23,24-octakis(octyloxy)phthalocyanine] with monomeric complexes [(Pc)M(acac)] (Hacac=acetylacetone), both of which generated in situ, led to the isolation of heteroleptic phthalocyaninato-[2,3,9,10,16,17,23,24-octakis(octyloxy)phthalocyaninato] lanthainde(III) triple-decker complexes [(Pc)M{Pc(OC8H17)8}] (M=Gd-Lu) (1-8) as the sole product. Heterodinuclear analogues [(Pc)Lu{Pc(OC8H17)8}M(Pc)] (M=Gd-Yb) (9-15) were obtained in a similar manner from the reaction of [(Pc)M{Pc(OC8H17)8}] (M=Gd-Yb) and [(Pc)Lu(acac)]. The molecular structures of the herterodinuclear compound [(Pc)Lu{Pc(OC8H17)8}Er(Pc)] (13) and its homodinuclear counterparts [(Pc)M{Pc(OC8H17)8}M(Pc)] (M=Er, Lu) (5, 8) have been determined by X-ray diffraction analysis; these structures exhibit a symmetrical molecular structure with one inner planar Pc(OC8H17)8 ligand and two outer domed Pc ligands. In addition to various spectroscopic analyses, the electrochemistry of these compounds has also been studied by cyclic voltammetry (CV) and differential pulse voltammetry (DPV) methods, revealing the gradually enhanced pi-pi interactions among the phthalocyanine rings in the triple-deckers along with the lanthanide contraction. 相似文献
43.
A novel compound (NH4)2Y(H2O)8[PMo10V2O40]·10H2O has been prepared in an aqueous solution and characterized by elemental analysis, IR, and TG-DTG analysis. X-ray diffraction analysis was carried out on (NH4)2Y(H2O)8 [PMo10V2O40]·10H2O single crystal, which crystallizes in the monoclinic system of a space group P21/c with a=0.9871(3) nm,b=1.5424(5) nm, c=2.7924(9) nm, β= 94.183(5)° and Z=2. In the compound, a two-dimensional network is constructed by the PMo10V2O54-0 anion and the Y(H2O)83+ cation building blocks via hydrogen bonding exhibiting the porous structure. 相似文献
44.
Three dinuclear copper(i) complexes with the formula [Cu(2)(mu-X)(2)(1,2-(P(i)Pr(2))(2)-1,2-C(2)B(10)H(10))(2)] (X = Cl (), Br (), I ()) containing the closo carborane diphosphine ligand 1,2-(P(i)Pr(2))(2)-1,2-C(2)B(10)H(10) have been prepared and characterized by elemental analysis, FT-IR and X-ray structure determination. The X-ray structure analyses revealed that the three complexes were isostructural and crystallized in the monoclinic system and space group C2/m. The carborane cage ligand was coordinated bidentately to the Cu(i) center through its two phosphorus atoms, and the coordination geometry around each copper atom was distorted tetrahedral. Two halogen atoms bridged the metal centers forming a dimer structure [Cu(2)(mu-X)(2)(1,2-(P(i)Pr(2))(2)-1,2-C(2)B(10)H(10))(2)], which were linked into 2D supramolecular networks through novel C-HH-B dihydrogen bonding interactions. 相似文献
45.
The mononuclear complexes [Ag(H2L1)(Py)2](NO3) x H2O (1, H2L1 = 2,6-bis(5-methyl-1H-pyrazol-3-yl)pyridine) and [Ag(NO3)(L()] (2, L2 = 2,6-bis(5-methyl-1-isopropyl-1H-pyrazol-3-yl)pyridine), dinuclear complex [Ag2(H2L3)2(HL4)2] (3, H2L3 = 2,6-bis(5-phenyl-1H-pyrazol-3-yl)pyridine, HL4 = 6-(5-phenyl-1H-pyrazolyl-3-yl)picolinate), one-dimensional polymer {[Ag2(H2L1)2](NO3)2 x H2O}(n) (4), and hexanuclear clusters [Ag6(HL1)4](X)2 (X = NO3-, 5 ; BF4-, 6 ; ClO4-, 7) stabilized by pincer-like bispyrazolyl ligands have been prepared and characterized using (1)H NMR spectroscopy, elemental analysis, IR spectroscopy, luminescence spectroscopy and X-ray diffraction. In complex , there is a ligand unsupported Ag-Ag bond between the two silver atoms. Complex displays a one-dimensional polymer consisting of an infinite Ag-Ag chain and every two adjacent silver ions are bridged by an H2L1 ligand. Complexes and have the same Ag6 cores in which six silver atoms are held together by four HL1 and five Ag-Ag bonds, while complex was held together by six Ag-Ag bonds. The silver-silver distances in these complexes are found in the range of 2.874(1)-3.333(2) A for ligand supported, and 3.040(1) A for ligand unsupported Ag-Ag bonds, respectively. Complexes 3-7 are strongly luminescent due to either intraligand or metal-ligand charge transfer processes. 相似文献
46.
A novel triorganotin(IV) complex 1 has been synthesized and structurally characterized by elemental analysis, FT-IR, NMR (1H, 119Sn) spectra and X-ray crystallography. This complex displays a 3D network structure, which contains two types of chair form macrocycles. 相似文献
47.
Abstract
Three saccharinate salts (2-aminopyrimidine): (saccharin) (1), (4-phenylthiazol-2-amine): (saccharin) (2), and (2-methylquinoline): (saccharin) (3) were prepared and structurally characterized by X-ray crystallography. Salt 1 crystallizes in the monoclinic, space group P2(1)/c, with a = 7.1782(9) ?, b = 13.5105(16) ?, c = 12.2251(12) ?, β = 93.3410(10)°, V = 1183.6(2) ?3, Z = 4. Compound 2 crystallizes in the triclinic, space group P-1, with a = 7.4584(7) ?, b = 8.6930(9) ?, c = 12.9179(14) ?, α = 108.952(2)°, β = 91.7510(10)°, γ = 97.2280(10)°, V = 783.57(14) ?3, Z = 2. Compound 3 crystallizes in the monoclinic, space group P2(1)/c, with a = 7.781(8) ?, b = 19.4209(19) ?, c = 10.9719(12) ?, β = 107.7390(10)°, V = 1579.2(16) ?3, Z = 4. The different hydrogen bonding interaction modes of the saccharinate anions and the cations lead to 3D network structure, 3D staircase structure, and 3D ABAB layer structure for 1, 2, and 3 respectively. Despite variations in the cation shape on the aromatic N–heterocyclic compounds, there all existed strong intermolecular N–H⋯O(carbonyl) hydrogen bonds. In compounds 1, and 3 the N+–H⋯O interaction between the N+–H group of the cation and the C=O group of the saccharinate anion is the most important interaction in this family of salts. However, in 2, there was a N–H⋯O interaction between the amino proton and the C=O group of the saccharinate anion. At the next level, the aromatic C–H proton interacts with the sulfonyl O atom. There are also π–π interactions in compounds 1–2, there is CH3–π interaction in 3. Under these interactions the three compounds exhibit synthons I–III respectively. These interactions are responsible for the high-yielding supramolecular assembly of N-containing aromatic bases and the saccharinate into salts. 相似文献48.
Dan Wenyan Chen Jingtao Di Youying Kong Yuxia Wang Qiang Yang Weiwei Wang Daqi 《中国化学》2010,28(7):1097-1102
The complex (C11H18NO)2CuCl4 (s), which may be a potential effective drug, was synthesized. X‐ray crystallography, elemental analysis, and chemical analysis were used to characterize the structure and composition of the complex. Lattice energy and ionic radius of the anion of the complex were derived from the crystal data of the title compound. In addition, a reasonable thermochemical cycle was designed, and standard molar enthalpies of dissolution for reactants and products of the synthesis reaction of the complex were measured by an isoperibol solution‐reaction calorimeter. The enthalpy change of the reaction was calculated to be ΔrH?m=(2.69±0.02) kJ·mol?1 from the data of the above standard molar enthalpies of dissolution. Finally, the standard molar enthalpy of formation of the title compound was determined to be ΔrH?m[(C11 H18NO)2CuCl4, s]= ? (1822.96±6.80) kJ·mol?1 in accordance with Hess law. 相似文献
49.
Abstract
Hydrazine bridged imidazole (1) and its fumarate salt (2) have been synthesized and structurally characterized. Hydrazine bridged imidazole (1) crystallizes in the monoclinic, space group P2(1)/n, with a = 12.809(7) ?, b = 5.102(3) ?, c = 14.401(8) ?, β = 96.859(10)°, V = 934.3(9) ?3, Z = 2. In 1, the two imidazolyl rings are located anti-parallely above and below the benzene planes, respectively. This arrangement leads the imidazolyl rings to be in the trans conformation. In addition at each C=N bond, the larger groups linked to C and N atoms are located in the same side of the double bond, thus in the solid state the conformation of the bis-imidazole (1) is E, E. 相似文献50.
Jianmin Dou Qingliang Guo Libin Wu Dacheng Li Daqi Wang Huaisheng Wang Yantuan Li 《应用有机金属化学》2006,20(3):193-202
The reaction of [RuCl2(PPh3)3] with closo‐[B10H10]2? and C5H5FeC5H4COOH (FcCO2H) in refluxing CH2Cl2 solution affords three ruthenaborane clusters: [PPh3(H2O)(FcCO2)RuB10H8Cl] (1), [(PPh3)2ClRu(PPh3)(FcCO2)RuB10H9]·0.5CH2Cl2 (2 × 0.5CH2Cl2) and [PPh3(FcCO2)2RuB10H8] (3). All of these compounds are characterized by FT‐IR, NMR spectroscopic techniques, elemental analysis and single‐crystal X‐ray analysis. They are all based on a closo‐type 1:2:4:2:2 {RuB10} stack with the metal occupying the unique six‐connected apical position and can be considered as having isocloso structures derived from the complete capping of the open face of an arachano geometry to give a completely closed deltahedral cluster. Compounds 1 and 2 both have an exo‐polyhedral ferrocenecarboxylate that is attached with one {Ru? O} and one {B? O} bond each, resulting in one exo‐cyclic five‐membered Ru? O? C? O? B ring. There is in addition one exo‐polyhedral ruthenium atom bonded to the center {RuB10} cluster via one {Ru? Ru} linkage and two {RuHµB} bridges, which forms a closed exo‐polyhedral tetrahedron configuration in compound 2. Compound 3 has two exo‐polyhedral ferrocenecarboxylates to form two five‐membered Ru? O? C? O? B rings engendering a symmetrical conformation. All of these new 11‐vertex ruthenaboranes can be considered as having isocloso structures derived from the complete capping of the open face of an arachano geometry to give a completely closed deltahedral cluster. Copyright © 2006 John Wiley & Sons, Ltd. 相似文献