Synthesis, Structure and Luminescent Property of a New Zn(Ⅱ) Coordination Polymer Based on 1,3,5-Benzenetricarboxylate and 4,4'-Bipyridine Ligands

A new Zn（II） coordination polymer [Zn3（BTC）2（4,4＇-bpy）（CO）2]n （1, H3BTC = 1,3,5-benzenetricarboxylic acid, 4,4＇-bpy = 4,4＇-bipyridine） has been prepared through urothermal reaction of zinc nitrate hexahydrate with 1,3,5-benzenetricarboxylic acid and 4,4＇-bipyridine, and characterized by elemental analysis, IR spectroscopy, TGA and powder XRD, and its crystal structure was determined by single-crystal X-ray diffraction analysis. The title compound crystallizes in the monoclinic system, space group C2/c, with a = 10.262（3）, b = 18.838（5）, c = 15.083（4）/k, fl = 99.203（4）°, V = 2878.3（14） A3, C30H14Zn3N2O14, Mr= 822.54, Z = 4, Dc = 1.898 g/cm3,μ = 2.561 mm-1,F（000） = 1640, R = 0.0363 and wR = 0.0932 for 2828 observed reflections （I 〉 2σ（I））. X-ray analysis shows that the asymmetric unit of the title compound contains two crystallographically unique Zn（lI） atoms which are connected by BTC3- ligands and 4,4＇-bpy coligands to form a 3D framework with 1D channels. The solid luminescence of ligand and the title complex was also studied at room temperature.

Synthesis and blue light-emitting properties of 4,4'-bis(diphenylamino)-quinque(p-phenyl)s

An excellent organic blue light-emitting diode based on 4,4＇-bis（diphenylamino）-quinque（p-phenylene）s （OPP（5）-NPh） with a maximum luminance of up to 5000 cd/m^2 and a luminanous efficiency of 1.3 cd/A was reported. This diode was made by using a wide band-gap hole-blocking layer, F-TBB instead of PBD in the OLED devices. We attribute the good performance to the one trade-off involved in the use of F-TBB to obtain higher luminance is the increased turn-on voltages and slightly decreased device efficiencies.

In situ Alkylation of 4,4'-Bipyridine in Hydrothermal Synthesis of an Iodoplumbate Inorganic-organic Hybrid with Fluorescence

A novel 1-D iodoplumbate hybrid, 2（Pb3I9）^3＊·3（C14H18N2）^2＋ 1, has been hydrothermally synthesized and characterized by IR spectra, TGA and single-crystal X-ray diffraction. Complex 1 crystallizes in monoclinic, space group P21/c, with a = 12.057（2）, b = 14.024（3）, c = 24.742（5） A, β = 90.48（3）°, V = 4183.6（14） A^3, Z = 4, R= 0.0477 and wR = 0.0800. The title compound consists of 1-D chains （Pb3I9）n^3n＊ parallel to the [100] direction and stacks of alkylated 4,4＇-bipyridium cations running along the [011] direction. Each anionic chain is surrounded by six arrays of alkylated 4,4＇-bipyridium cations through extensive C-H…I atypical hydrogen-bonding interactions to afford an interesting 3-D supramolecular network. Significant fluorescent property of the compound was observed at room temperature.

Synthesis and Crystal Structure of 4,4′-Diamino-N,N′-diethyl Bisbenzenesulfamide

A new compound of 4,4＇-diamino-N,V＇-diethyl bisbenzenesulfamide （C18H26N4O4S2, Fw = 426.55） has been synthesized and its structure was determined by X-ray crystallography method. The crystal belongs to the monoclinic system, space group P21/c with a = 10.0623（9）, b = 13.6759（13）, c =15.5309（14） A, β = 100.482（2）°, V= 2101.6（3） A^3, Dc = 1.348 g/cm^3, F（000） = 904, μ = 0.285 mm^-1, Z = 4, the final R = 0.0512 and wR = 0.1363 for 3485 observed reflections with I 〉 2σ（I）. The structure of the title compound is pseudo secondary axisymmetric, and the two sulfamide-groups show distorted tetrahedral configurations.

Synthesis and Crystal Structure of 4,4'-(4-(1-Naphthyl)-4-phenyl-1,3-butadienylidene)-bis[N,N-diethylbenzenamine]

The title compound （C40H42N2） has been synthesized by the reaction of l-（l- naphthyl）-l-phenyl-3-chloropropylene and bis（4-（diethylamino） phenyl）methanone, and characterized by IR, ^1H NMR, MS and X-ray diffraction analysis. The crystal belongs to the monoclinic system, space group P21/c with a = 17.047（3）, b = 10.807（2）, c = 18.494（4） A, β = 105.727（4）°, V= 3279.4（11） A^3, Mr = 550.76, Z = 4, Dc = 1.115 g/cm^3,μ（MoKa） = 0.085 mm^-1, F（000） = 1184, the final R = 0.0625 and wR = 0.1384 for 2276 observed reflections （1 〉 2σ（I））. X-ray analysis reveals that the butadiene fragment adopts a planar cisiod conformation and makes a dihedral angel of 69.4（2）° with the naphthalene ring.

Synthesis and Crystal Structure of a New Mononuclear Copper(Ⅱ) Complex with 4,4′,6,6′-Tetrabromo-2,2′- [ethylenedioxybis(nitrilomethylidyne)]diphenol

A new mononuclear Cu（II） complex, [Cu（L）] （H2L = 4,4′,6,6v-tetrabromo-2,2′- [ethylenedioxybis（nitrilomethylidyne）]diphenol）, has been synthesized and structurally characterized. X-ray crystal structure of the complex reveals that the Cu（Ⅱ） ion is four-coordinated by two oxygen atoms and two nitrogen atoms from L2- unit. Crystallographic data： monoclinic, space group P21/n with a = 14.076（2）, b = 6.9801（14）, c = 19.858 （2） A, β= 107.613（2）°, C16n10Br4CuN2O4, Mr = 677.44, V = 1859.6（5） A3, Dc = 2.420 g/cm3,μ = 9.796 mm^-1, F（000） = 1284, Z = 4, the final R = 0.0516 and wR = 0.0938 for 1879 observed reflections with I 〉 2σ（/）. The dihedral angel between the two coordination planes of Cu（1）-N（2）--O（4） and Cu（1 ）-N（ 1 ）-O（3）） is 30.08（6）°.

Synthesis and Crystal Structure of (2S,5S)-1-Aza-2- (2-pyridyl)-3-oxa-4,4-diphenylbicyclo [3.3.0] Octane

The title compound (C23H22N2O) 3 has been synthesized by the reaction of (S)- (-)-1,1-diphenyl-2-pyrrolidinemethanol 1 with 2-pyridinecarboxaldehyde 2 in refluxing benzene catalyzed by TsOH, and its structure was determined by single-crystal X-ray diffraction. The crystal belongs to orthorhombic, space group P212121 with a = 8.4747(8), b = 10.8829(10), c = 19.777(2) , Mr = 342.43, V =1824.0(3) 3, Dc = 1.247 g/cm3, Z = 4, m = 0.077 mm-1 and F(000) = 728. The structure was solved by direct methods and refined by full-matrix least-squares techniques to the final R = 0.0497 and wR = 0.0927.

A Novel Layered Complex with Rhomboidal Channels:Hydrothermal Synthesis,Crystal Structure,and Properties of Cu(4,4'-bipy)_2(H_2PO_4)_2(H_2O)_2 (bipy=bipyridine)

The combination of both 4,4′-bipyridine(4,4′-bipy) and dihydrogen phosphate anion ligands with copper(Ⅱ) results in the formation of a novel layered compound Cu(4,4′-bipy)_2(H_2PO_4)_2(H_2O)_2. The crystal structure comprises discrete neutral Cu(4,4′-bipy)_2(H_2PO_4)_2(H_2O)_2 units. The copper atom,located on the crystallographic twofold axis,is coordinated with two nitrogen atoms of terminal 4,4′-bipy ligands and two water molecules at the equatorial positions,and two dihydrogen phosphate oxygen atoms at the axial positions,forming an elongated octahedron. The complex is a two-dimensional distorted rhomboidal network possessing two kinds of rhomboids with dimensions of ca . 1.6792 nm×0.3203 nm and 1.2778 nm×0.3198 nm,respectively. The two-dimensional networks are stacked parallelly on each other along c -axis to give an extended three-dimensional channel network with an interlayer distance of ca . 0.5030 nm. Crystal data: triclinic,space group P -_1,a =1.0253(2) nm,b =1.4501(3) nm,c =0.79715(16) nm, α =97.91(3)°,β = 90.99(3)° ,γ =85.54(3)°,V =1.1703(4) nm 3,Z =2,R =0.0892,wR =0.2451.

A Novel Method for Synthesizing 4,4′-Bis(hydroxymethyl)-2,2′-bipyridine

There are several paths for synthesizing 4,4′ bis(hydroxymethyl) 2,2′ bipyridine, but most of them need strict experimental conditions that are not easy to be overcome. We designed a simple way to prepare this product via the oxidation of 4,4′ bismethyl 2,2′ bipyridine, followed by esterification and reduction. The yield increases and the reaction conditions become genial in contrast to those of other methods. The molecular structure of the final product was confirmed by means of elemental analysis, IR, 1H NMR and MS spectra.

4,4'-二氨基三苯胺的合成与纯化

以苯胺和对硝基氯苯为原料,K2CO3作催化剂,合成出了中间产物4,4'-二硝基三苯胺(DNTPA).将中间产物用10%(质量分数)的Pd/C催化剂加氢催化还原,得到纯度为96.6%的目标产物4,4'-二氨基三苯胺(DATPA),合成总产率为38%.与其它方法相比,该方法原料便宜易得,纯度很高,产物可作为反应的单体原料.

3,3′-二氰基-4,4′-偶氮呋咱(DCAF)合成及晶体结构

以3-氨基4-酰胺肟基呋咱（AAOF）为原料，经两步氧化得到3，3’-二氰基-4，4＇-偶氮呋咱（DCAF），并通过红外光谱、核磁共振光谱、元素分析等方法对产物进行了结构表征；同时，探讨了高锰酸钾氧化反应的关键影响因素，确定了适宜的反应条件：初始反应温度低于-5℃，HCl与CNAF的物料比30：1—40：1，反应时间为4h；首次培养得到了DCAF单晶，X射线单晶衍射分析结果表明：DCAF晶体属三斜晶系，空间群P-1，a=1．8297（11）nm，b=0．588（3）nm，c=0．9069（5）nm，V=0．8853（9）nm^-1，Z=4，Da=1．622g·cm^-1，F（000）=432，μ（MoKα）=0．131mm^-1，R1=0．1039，wR=0．2420。

2,2′,4,4′-四羟基二苯甲酮的合成

以2,4-二羟基苯甲酸和间苯二酚为原料,无水氯化锌与三氯氧磷为复合催化剂,环丁砜为溶剂,通过Friedel-Crafts反应合成了紫外线吸收剂2,2′,4,4′-四羟基二苯甲酮,同时研究了催化剂、原料配比、温度、时间及溶剂用量对该C-酰化反应的影响,得到较好的工艺条件为:原料n(酚)∶n(酸)为1 4∶1 0,复合催化剂m(POCl3+ZnCl2)∶m(原料)为1 4∶1 0,其中m(POCl3)∶m(ZnCl2)为1 33∶1,溶剂m(环丁砜)∶m(原料)为0 6∶1 0,70℃下反应2 2h,产品收率可达87%以上。

紫外线吸收剂4,4′-二羟基二苯甲酮的合成

以对羟基苯甲酸和苯酚为原料,氯化锌、三氯氧磷为催化剂,通过FriedelCrafts反应合成了紫外线吸收剂中间体4,4′-二羟基二苯甲酮。实验考察了反应温度、反应时间、原料配比、溶剂诸因素对产品收率的影响。结果表明:在n(对羟基苯甲酸):n(苯酚)=11.5、反应温度70°C、反应时间2.5h的优化条件下,产物收率为49.1%,产品纯度达到99.8%。产物结构经红外光谱IR、紫外光谱UV、质谱MS进行了表征。

4,4′-二硝基双呋咱醚的合成与表征

以3,4-二氨基呋咱(DAF)为原料,经Caro-acid氧化生成二硝基呋咱(DNF),碱性条件下DNF分子间硝基醚化后合成目标化合物4,4′-二硝基双呋咱醚(FOF-1)。采用红外光谱、质谱、元素分析及核磁共振进行了结构表征;初步探讨了硝基分子间醚化合成FOF-1的反应机理;优化了氧化、分子间醚化工艺,确定了最佳合成条件:氧化反应时间为3.5h,H2SO4的起始浓度为51.7%,醚化反应时间为2.5h,水质量分数小于0.03%。总收率达到42%,纯度为99.6%。

3,3′-二氰基-4,4′-偶氮氧化呋咱合成与表征

以丙二睛为原料,经过亚硝化、肟化、氧化环化以及偶氮偶合四步反应合成了3,3′-二氰基-4,4′-偶氮氧化呋咱,上述四个反应过程收率分别为79.0%,86.8%,61.3%和71.9%,全程收率为30.2%,并采用红外光谱、核磁共振、元素分析等进行了结构表征;初步探讨了氧化环化合成氧化呋咱的反应机理,研究了其关键影响因素,优化了反应条件,最后确定适宜反应条件为:料比n(过氧化铅)∶n(1-氨基-2-氰基二肟)为4∶1,反应时间4 h,收率达到61.3%。

3-氨基-4-硝基呋咱和3,3'-二硝基-4,4'-偶氮呋咱的合成研究

3-氨基-4-硝基呋咱(ANF)及其衍生物是一类重要的含能材料.ANF的制备首先以乙二醛、盐酸羟胺和氢氧化钠为原料,经过两步反应制得3,4-二氨基呋咱(DAF),采用新的氧化体系过氧化氢/甲烷磺酸/钨酸钠混合物(H2O2/CH3SO3H/Na2WO4)代替原氧化体系过氧化氢/硫酸/过硫酸铵混合物[H2O2/H2SO4/(NH4)2S2O8]氧化DAF以67%的产率获得了ANF.然后在单电子氧化体系高锰酸钾/盐酸混合物作用下ANF发生氧化反应以54.7%的产率得到3,3'-二硝基-4,4'-偶氮呋咱(DNAzF).研究表明过氧化氢/甲烷磺酸/钨酸钠混合物是制备氨基硝基单/多呋咱非常有效的氧化体系.

2,2′,6,6′-四甲基-4,4′-二苯氧基二苯砜的合成与表征

以2,6-二甲基苯酚与4,4′-二氯二苯砜为原料,环丁砜为溶剂,通过亲核取代反应,合成出了2,2′,6,6′-四甲基-4,4′-二苯氧基二苯砜(o-M2DPODPS),对其进行了IR、DSC、MS、1H-NMR等表征分析.实验证明该化合物具有预期的结构,具有较高的熔点和纯度.

4,4’-双(膦酸二甲酯)甲基联苯合成工艺研究

以亚磷酸三甲酯与卤代烷为原料合成了4,4’-双(膦酸二甲酯)甲基联苯,考察了配料比、反应时间、反应温度及溶剂量对4,4’-双(膦酸二甲酯)甲基联苯收率的影响。结果表明,合成4,4’-双(膦酸二甲酯)甲基联苯的最佳条件为:双氯甲基联苯∶亚磷酸三甲酯(摩尔比)=3∶1,反应时间2 h,反应温度110℃,溶剂量160 mL,在此工艺条件下4,4’-双(膦酸二甲酯)甲基联苯收率可达91.5%,产品含量达98.6%。

一种合成3,3′-二氨基-4,4′-氧化偶氮呋咱的新方法

以3,4-二氨基呋咱为原料,经过中间体3-氨基-4-甲酰胺基呋咱或3,4-二甲酰胺基呋咱,以1,4-二氧六环为溶剂,30%双氧水为氧化剂,加热回流4h,得到产物3,3′-二氨基-4,4′-氧化偶氮呋咱(DAOAF),产率分别为97%或89%。并通过1H NMR、13C NMR、IR和EI对产物进行了表征。

4,4'—双(3-氨基苯氧基)二苯甲酮及其聚醚醚酮酰亚胺的合成

在N,N—二甲基甲酰胺和甲苯的混合溶剂体系中,4,4'—二氟二苯甲酮(DFBP)与3—氨基苯酚(3AP)在无水碳酸钾的作用下发生化学反应,合成得到了4,4'—双(3-氨基苯氧基)二苯甲酮(443BAPOBP)单体。通过熔点测试、高效注注液相色谱(HPLC)、傅立叶红外(FT-IR)以及元素分析对443BAPOBP进行了表征,并且在N,N-二甲基乙酰胺溶剂中,443BAPOBP与均苯四甲酸二酐(PMDA)聚合成得到了新型的聚醚醚酮酰亚胺(PEEKI)树脂及其薄膜。