Synthesis and Crystal Structure of a New Olefin-Cu(I) Coordination Polymer Assembled by Tetrazolium Ligand

A new complex has been synthesized by the reaction of CuBr and 1,4-bis(2-allyl-2 H-tetrazol-5-yl)benzene. The crystal structure of the resulting complex, [Cu_3(1,4-bis(2-allyl-2 H-tetrazol-5-yl)benzene)Br_3]_n(1), has been determined by single-crystal X-ray diffraction analysis. Complex 1 is of monoclinic system, space group P21/c with a = 10.983(7), b = 6.294(4), c = 17.606(10) ?, β = 102.465(6)°, V = 1188.4(3) ?~3 and Mr = 577.52. Structural analyses revealed complex 1 shows a three-dimensional(3 D) framework. The thermal stability and luminescent properties of the complex are also investigated.     

Two Low-temperature Phase Transition Compounds Based on Quinuclidine Derivatives with Fluorescence

Two phase transition materials[iPrQ]2MnBr4(1,iPrQ=N-isopropyl-quinuclidinium)and[iPrQ]₂MnCl₄(2)were synthesized and characterized.Dielectric measurements and differential scanning calorimetry showed that the two compounds underwent reversible phase transitions at ca.–47 and–37℃,respectively.Variable-temperature single-crystal X-ray diffraction suggested that the two compounds underwent the same phase transitions from space group C2/c to Cc but at different temperature.The variable crystal structures indicated that the structural phase transitions of the compound were ascribed to the torsional movement of quinuclidine ring and the disappearance of the c-slide plane.The second harmonic generation(SHG)response further proved this structural phase transition.Fluorescence tests showed that the two compounds have strong fluorescence.The strong variations in dielectric anomalies make compounds 1 and 2 suitable for promising switchable dielectric materials.     

单一手性锌配位聚合物：晶体结构，荧光及介电性质

在原位水热条件下,单一手性有机配体(S)-甲基-2-(4-氰基苯胺)-3-(4-羟基苯)丙酸甲酯与叠氮化钠和氯化锌反应,得到了一个新的四唑锌配位聚合物{[Zn(TBHPA)H2O].H2O}n(1,TBHPA=(S)-2-(4-(2H-tetrazol-5-yl)benzylamino)-3-(4-hydroxy-phenyl)propa-noic acid)。单晶结构表明该化合物结晶在手性空间群P212121,CD谱进一步证实该化合物固体粉末具有单一手性。倍频实验结果表明化合物1的SHG(倍频效应)响应大概是尿素的0.6倍。荧光测定结果显示该化合物在428 nm处有较强的荧光发射峰(激发波长319 nm)。另外,还研究了化合物1在室温条件下不同频率的介电常数变化。     

单一手性一价铜配位聚合物:晶体结构,荧光,SHG响应及介电性质(英文)

<正>Under hydrothermal conditions,homochiral ligand(4aR,8aR)-2,3-di(thiophen-2-yl)-decahydroquinoxaline (DTDCQ) reacted with CuBr to give 1D helical chain complexes[(DTHHQ)CuBr]_n(1).Single crystal X-ray determination shows that compound 1 crystallize in chiral space groups P2_12_12_1 and the experimental result indicated that 1 has SHG(second harmonic generation) active with approximate responses 0.4 times that of urea,Fluorescent analysis showed it exhibits one intense emission band at 377 nm when the exciting radiation was set at 340 nm. Dielectric constant of compound 1 were measured at different frequencies at room temperature.     

硬脂酸包覆滑石粉对水在环氧涂层中传输性能的影响

硬脂酸包覆滑石粉对水在环氧涂层中传输性能的影响;环氧树脂;硬脂酸;缓蚀剂;包覆;电化学阻抗谱     

Synthesis,Structure and Fluorescence of Olefin-Copper(Ⅰ) Coordination Polymers

The organic olefin ligand 2,5-dimethyl-1-(4-vinyl-benzyl)-piperazine reacts with CuX(X = Cl, Br) to obtain two novel olefin-copper(I) coordination polymers [C_(15)H_(22)N_2Cu_2Cl_3]n(1) and [C_(15)H_(20)N_2Cu_2Br_2]n(2). There are two types of CuX warp structures that have never been seen before in the presence of methanol under solvothermal conditions. The new olefin-copper(I) coordination complex crystallizes in the monoclinic space group P21/c to obtain compounds 1 and 2. Its unique green fluorescence effect can be applied to the LED field.     

Synthesis,Fluorescence and Dielectric Properties of Two Novel Compounds Based on Triethylenediamine Derivatives

Two compounds C_8H_(18)N_2Br_3Mn_(0.5)(1) and C_(12)H_(26)N_2Cl_4Mn(2) based on triethylenediamine derivatives were synthesized by solution method and were characterized by elemental analysis, infrared spectroscopy, single-crystal X-ray structure analysis, fluorescence test, circular dichroism(CD) analysis and dielectric measurement, respectively. According to single-crystal X-ray determination, compound 1 crystallizes in the cubic system, space group Pa3 with a = b = c = 13.7246(5) ?, Z = 24, V = 2585.2(3) ?~3; and compound 2 crystallizes in the orthorhombic system, space group P212121 with a = 7.9716(13), b = 15.309(3), c = 15.804(3) ?, Z = 4 and V = 1928.7(6) ?3. Fluorescent analysis of compound 1 showed an intense emission band at 670 nm when the exciting radiation was set at 378 nm and fluorescent analysis of compound 2 showed an intense emission band at 515 nm when the exciting radiation was set at 363 nm. Dielectric constants of compounds 1 and 2 were measured at different frequencies with temperature variation.     

Hydrothermal Syntheses,Crystal Structures,TGA and Electrochemistry Properties of Two Metal-organic Coordination Compounds Based on 4'-((1H-1,2,4-triazol-1-yl)methyl)-[1,1'-biphenyl]-2-carbonitril

Two novel metal-organic coordination compounds with molecular structures of {[Co(TMBC)4Cl2]·2H2O}(1) and {[Ni(TMBC)4Cl2]·2H2O}(2)(TMBC = 4'-((1H-1,2,4-triazol-1-yl)methyl)-[1,1'-biphenyl]-2-carbonitrile), have been synthesized under hydrothermal conditions of Co Cl2·6H2O and Ni Cl2·6H2O with 4'-((1H-1,2,4-triazol-1-yl)methyl)-[1,1'-biphenyl]-2-carbonitrile, respectively. Both compounds crystallize in triclinic systems, space group P 1. They are characterized by single-crystal X-ray diffraction analysis, elemental analysis, IR spectroscopy and TGA. Moreover, their electrochemical behaviors have also been studied in different electrolyte solutions, respectively.     

Syntheses and Crystal Structures of Pyridyl Substituted Dibenzo[b,e]-[1,4]diazepin-1-one Derivatives

A new series °f 11-pyridyl substituted dibenz°-diazepin-1-°ne derivatives 1 was synthesized by a tw° step cycl°c°ndensati°n reacti°n. All the c°mp°unds were characterized by IR,MS, and 1H NMR. And crystals °f 1a and 1b were °btained and determined by X-ray single-crystal diffracti°n. Crystal data °f 1a: C48H52N6O7, m°n°clinic system, space gr°up C2/c, a = 28.39(4), b =9.275(12), c = 16.84(2) A, β = 104.98(3)°, V = 4284(10) A3, Z = 4, F(000) = 1752, Dc = 1.279 g/cm3,R = 0.0603, and wR = 0.1314. Crystal data °f 1b: C24H21N3 O, m°n°clinic system, space gr°up P21/c,a = 11.625(5), b = 19.055(9), c = 8.741(4) A, β = 95.547(6)°, V = 1927.2(15) A3, Z = 4, F(000) =776, Dc = 1.266 g/cm3, R = 0.0494, and wR = 0.1287.     

两个基于四氮唑衍生物的配位聚合物的合成

在水热条件下,5-(4-吡啶基)四氮唑(4-PTZ)分别与氯化锌和氯化镉反应,得到2个基于此配体的配位聚合物,它们的分子式分别为{[Zn(4-PTZ)2Cl2]·4H2O}n(1)和{[Cd3(4-PTZ)2(H2O)2Cl6]·3H2O}n(2),且表现出不同的配位模式。这2个化合物均结晶在单斜晶系,化合物1的晶胞参数分别为:a=0.691 75(8)nm;b=2.668 8(3)nm;c=1.122 66(12)nm;β=93.535 0(10)°;V=2.068 7(4)nm3;Z=4;R1=0.031 8(I>2σ(I));w R2=0.082 9;空间群为P21/n。化合物2的晶胞参数分别为:a=1.897 13(13)nm;b=1.055 79(7)nm;c=1.446 49(10)nm;β=102.489 0(10)°;V=2.828 7(3)nm3;Z=4;R1=0.026 2(I>2σ(I));w R2=0.134 3;空间群为C2/c。通过元素分析、红外光谱分析和热重分析对该化合物进行了表征,另外荧光测定结果显示化合物1和2的固态粉末在室温下均表现出较强的紫外荧光发射特性。