Hydrothermal synthesis, crystal structure and properties of complex [Co (odpa) (phen) 2 ( H2O )] · H2O

以4,4’-氧化二苯四羧酸二酐和1,10-邻菲啰啉为配体在水热条件下合成了标题配合物,并用元素分析、红外光谱、X-射线单晶衍射以及热重分析对配合物进行了表征.晶体结构分析表明配合物为三斜晶系,P-1空间群a=11.190(2)(A),b=12.587(2) (A),c=13.097(3)(A),α=102.688(3)°,β=105.751(2)°,γ =92.615(2)°,V =1721.1(6)A3,Z=2.配合物为单核结构,相邻的单核分子通过氢键的识别作用形成一维超分子双链.π…π堆积作用和C-H…π之间弱相互作用将邻近超分子双链的进一步扩展为三维超分子结构.     

新型镍配合物[Ni(C14H12N2)（H2O）（HCO2）2]·H2O合成及结构

溶解2,9’-二甲基邻菲咯啉的15ml乙醇水溶液中(v/v=2:1)加入新制备NiCO3沉淀,搅拌下再滴加入1.0mol/L的甲酸液,该溶液室温下静置缓慢蒸发5天,得到绿色块状的[Ni(C14H12N2)(H2O)(HCO2)2].H2O晶体。单晶X-射线衍射分析表明,该配合物晶体属三斜晶系,P-1空间群,晶胞参数为:a=7.399(2),b=10.373(2),c=11.442(2),α=82.42(3)°,β=81.77(3)°,γ=76.10(3)°,V=839.3(3)3,Z=2,C16H18NiN2O6,Mr=393.01。最后残差因子R1=0.0353,wR2=0.0835。中心金属离子Ni与邻菲咯啉配体的2个N原子及一个甲酸根中的2个O原子螯合形成八面体赤道面,轴向与结晶H2O与另一个甲酸根中的2个O原子与形成NiN2O4畸变八面体配位结构。     

4-甲基水杨酸铜(Ⅱ)配合物的合成与表征

采用溶剂热法合成了一个配合物[Cu(4-Me-SA)(Phen)]·2H2O(Phen=1,10-邻菲啰啉,4-Me-SA=4-甲基水杨酸),用X射线单晶衍射仪测定了该化合物的晶体结构,通过元素分析(EA),红外光谱(FTIR),紫外-可见光谱(UV-Vis),热分析(DSC-TGA)和荧光光谱(FS)对其结构和性质进行了分析与表征。结果表明:晶体属于单斜晶系,P2(1)/c空间群,晶胞参数a=0.8324(3)nm,b=1.2644(5)nm,c=1.7493(7)nm,α=90.00°,β=100.404(7)°,γ=90.00°,V=1 810.8(12)nm3,Z=4。配位原子分别来自于1个4-甲基水杨酸配体的2个氧原子和1个邻菲啰啉配体的2个氮原子,形成配位数为4的稳定结构。配合物中的氢键和π-π堆积作用使其自组装成1个稳定的三维立体结构。发光性能测试表明,该配合物具有荧光性质。     

邻菲咯啉衍生物的合成及条件优化

在邻菲咯啉和与其相关联而存在的各种金属离子的综合演化物之中,各种分子元素的组成模式具有不同程度的生物活性。因此设计合成具有生物活性的邻菲咯啉衍生物对寻找新型药物具有重要的意义。以邻菲咯啉(phen)为基本原料,邻菲咯啉二酮为配体,合成出二吡啶并[3,2-a:2’,3’-c]吩嗪(dppz)、二吡啶并[3,2-a:2’,3’-c]哇喔啉(dpq),并采用ESI-MS、~1H NMR等方法对这些化合物进行了表征;通过控制不同的反应条件(反应时间、温度、pH、投料比等),得到更适宜的合成路线。上述实验为开发抗肿瘤药物提供了一定的实验基础。     

4-甲基水杨酸铜(Ⅱ)配合物的合成与表征

采用溶剂热法合成了一个配合物[Cu(4-Me-SA)(Phen)]•2H2O(Phen = 1,10-邻菲啰啉,4-Me-SA = 4-甲基水杨酸）,用X-射线单晶衍射仪测定了该化合物的晶体结构,通过元素分析(EA),红外光谱(FTIR),紫外-可见光谱(UV-Vis),热分析(DSC-TGA)和荧光光谱(FS)对其结构和性质进行了分析与表征。结果表明：晶体属于单斜晶系,P2(1)/c空间群,晶胞参数a = 0.8324(3) nm,b = 1.2644(5) nm,c = 1.7493(7) nm,α = 90.00°,β = 100.404(7)°,γ = 90.00°,V = 1810.8(12) nm3, Z = 4。配位原子分别来自于1个4-甲基水杨酸配体的2个氧原子和1个邻菲啰啉配体的2个氮原子,形成配位数为4的稳定结构。配合物中的氢键和π-π堆积作用使其自组装成1个稳定的三维立体结构。发光性能测试表明该配合物具有荧光性质。     

乙醇合4,4′-(2-氟苯基)-双(3-甲基-1-苯基-5-吡唑啉酮)甲烷的合成及其晶体结构

标题化合物C27H23FN4O2(C2H5OH)是由2分子1-苯基-3-甲基-5-吡唑啉酮和1分子2-苯甲醛微波辐射4 m in,用乙醇重结晶得到。在该化合物的晶体结构中,一个结构单元包含1分子4,4′(2-氟苯基)双(1-苯基-3-甲基-5-吡唑啉酮)甲烷和1分子乙醇。结构通过X射线衍射法确定,其晶体属于单斜晶系,P21/c空间群,Mr=500.56,a=0.949 6(19)nm,b=2.217 4(4)nm,c=1.285 4(3)nm,β=100.71(3)°,V=2.659 5(10)nm3,dc=1.250 g/cm3,Z=4,F(000)=1 056,μ=0.087 mm-1,最终偏差因子分别为R=0.059 1,wR=0.149 9,分子之间通过相邻分子间形成的N—H…O和O—H…N氢键相连。     

Cu(Ⅱ)配合物[Cu(fiac)(1,10-phen)]·H_2O的合成、结构及性质研究

以5-氟水杨酸和邻菲罗啉为定向配体,与乙酸铜反应经溶剂热法合成了一个新的单核铜(Ⅱ)配合物[Cu(fiac)(1,10-phen)]·H2O(1)(Hfiac=5-氟水杨酸,1,10-phen=邻菲罗啉),并对结构进行了单晶X-射线衍射表征、元素分析和红外光谱分析。配合物1属于三斜晶系,Pī空间群,晶胞参数a=1.11401(6)nm,b=1.20947(10)nm,c=1.40478(17)nm;α=7.2680(11)°,β=75.090(9)°,γ=76.300(6)°,V=1719.6(3),Z=2,Dc=2.425g·cm-3,R1=0.0411,wR2=0.1108,S=1.110。配合物1中的Cu(Ⅱ)离子分别与来自二齿配体Hfiac上的两个O原子和来自邻菲罗啉配体上的两个N原子配位,形成平面构型。通过对配合物1的荧光性能研究,结果表明其具有一定的荧光特性。     

配合物[Cd(na)2(phen)2]·[Cd(na)2(phen)2]·3H2O的合成、晶体结构及荧光性质

用硝酸镉与1-萘甲酸、邻菲罗啉水热合成了配合物[Cd(na)2(phen)2]·[Cd(na)2(phen)2]·3H2O (Hna=1-萘甲酸,phen=1,10-邻菲罗啉),并用X-射线单晶衍射、红外、热重和元素分析进行了结构表征.结果表明,该配合物属三斜晶系,P-1空间群,晶胞参数为:a=1.27123(16) nm,b=1.6369(4) nm,c=1.9656(2)nm,α=75.613(2)°,β=84.363(2)°,γ=71.5380(10)°,Z=2,V=3.7572(8) nm3.配合物包含两个离散的单核[Cd(na)2(phen)2]子单元和三个结晶水分子,并通过分子间氢键形成三维超分子结构.在335 nm的紫外光激发下,配合物发射出源于Na-之间电子跃迁的荧光.     

基于[PW_(12)O_(40)]~(3-)的一个超分子化合物的合成与结构表征

利用水热合成方法合成了一种多酸化合物(C12N6H13.5)2(PW12O40)(1),通过元素分析、红外和X-射线单晶衍射对其结构进行了表征。1为单斜晶系,P2(1)/c空间群,a=2.21662(6)nm,b=0.97540(2)nm,c=2.60311(6)nm,β=91.893(2)°,V=5.3798(2)nm3,Z=4。氢键和π…π相互作用力将化合物连接成为三维的超分子结构。     

氢键构筑的3D超分子化合物的合成及晶体结构

在水热条件下合成了超分子化合物[Cu(phen)(HBTC)(H_2O)_2]·H_2O(phen为1,10-邻菲罗啉,H_3BTC为均苯三甲酸),并通过元素分析,红外(IR)光谱,热重(TG)和单晶X-射线衍射对其进行了表征。结构表明,该化合物属于单斜晶系,空间点群P2_1/c,晶胞参数a=1.233 38(18)nm,b=0.080 972(12)nm,c=2.032 2(3)nm,α=90°,β=90.266(2)°,γ=90°,V=2.029 5(5)nm~3,F(000)=1 036,Z=4。标题化合物的不对称单元由1个配合物分子[Cu(phen)(HBTC)(H_2O)_2]及1个结晶水分子组成,通过水分子间的氢键(O―H…O)连接成具有三维结构的超分子。     

Insect antifeedant properties of anthranoids from the genusVismia

Vismiones and ferruginins, representatives of a new class of lypophilic anthranoids from the genusVismia were found to inhibit feeding in larvae of species ofSpodoptera, Heliothis, and inLocusta migratoria.     

Direct observation of freeze-thaw instability of latex coatings via high pressure freezing and cryogenic SEM

Despite its industrial importance, the subject of freeze-thaw (F/T) stability of latex coatings has not been studied extensively. There is also a lack of fundamental understanding about the process and the mechanisms through which a coating becomes destabilized. High pressure (2100 bar) freezing fixes the state of water-suspended particles of polymer binder and inorganic pigments without the growth of ice crystals during freezing that produce artifacts in direct imaging scanning electron microscopy (SEM) of fracture surfaces of frozen coatings. We show that by incorporating copolymerizable functional monomers, it is possible to achieve F/T stability in polymer latexes and in low-VOC paints, as judged by the microstructures revealed by the cryogenic SEM technique. Particle coalescence as well as pigment segregation in F/T unstable systems are visualized. In order to achieve F/T stability in paints, latex particles must not flocculate and should provide protection to inorganic pigment and extender particles. Because of the unique capabilities of the cryogenic SEM, we are able to separate the effects of freezing and thawing, and study the influence of the rate of freezing and thawing on F/T stability. Destabilization can be caused by either freezing or thawing. A slow freezing process is more detrimental to F/T stability than a fast freezing process; the latter actually preserves suspension stability during freezing. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004 in Chicago, IL. Tied for first place in The John A. Gordon Best Paper Competition.     

Ethanol and (−)-α-Pinene: Attractant Kairomones for Bark and Ambrosia Beetles in the Southeastern US

In 2002–2004, we examined the flight responses of 49 species of native and exotic bark and ambrosia beetles (Coleoptera: Scolytidae and Platypodidae) to traps baited with ethanol and/or (−)-α-pinene in the southeastern US. Eight field trials were conducted in mature pine stands in Alabama, Florida, Georgia, North Carolina, and South Carolina. Funnel traps baited with ethanol lures (release rate, about 0.6 g/day at 25–28°C) were attractive to ten species of ambrosia beetles (Ambrosiodmus tachygraphus, Anisandrus sayi, Dryoxylon onoharaensum, Monarthrum mali, Xyleborinus saxesenii, Xyleborus affinis, Xyleborus ferrugineus, Xylosandrus compactus, Xylosandrus crassiusculus, and Xylosandrus germanus) and two species of bark beetles (Cryptocarenus heveae and Hypothenemus sp.). Traps baited with (−)-α-pinene lures (release rate, 2–6 g/day at 25–28°C) were attractive to five bark beetle species (Dendroctonus terebrans, Hylastes porculus, Hylastes salebrosus, Hylastes tenuis, and Ips grandicollis) and one platypodid ambrosia beetle species (Myoplatypus flavicornis). Ethanol enhanced responses of some species (Xyleborus pubescens, H. porculus, H. salebrosus, H. tenuis, and Pityophthorus cariniceps) to traps baited with (−)-α-pinene in some locations. (−)-α-Pinene interrupted the response of some ambrosia beetle species to traps baited with ethanol, but only the response of D. onoharaensum was interrupted consistently at most locations. Of 23 species of ambrosia beetles captured in our field trials, nine were exotic and accounted for 70–97% of total catches of ambrosia beetles. Our results provide support for the continued use of separate traps baited with ethanol alone and ethanol with (−)-α-pinene to detect and monitor common bark and ambrosia beetles from the southeastern region of the US.     

Methyl 2,4,6-decatrienoates Attract Stink Bugs and Tachinid Parasitoids

Halyomorpha halys (Stål) (Pentatomidae), called the brown marmorated stink bug (BMSB), is a newly invasive species in the eastern USA that is rapidly spreading from the original point of establishment in Allentown, PA. In its native range, the BMSB is reportedly attracted to methyl (E,E,Z)-2,4,6-decatrienoate, the male-produced pheromone of another pentatomid common in eastern Asia, Plautia stali Scott. In North America, Thyanta spp. are the only pentatomids known to produce methyl 2,4,6-decatrienoate [the (E,Z,Z)-isomer] as part of their pheromones. Methyl 2,4,6-decatrienoates were field-tested in Maryland to monitor the spread of the BMSB and to explore the possibility that Thyanta spp. are an alternate host for parasitic tachinid flies that use stink bug pheromones as host-finding kairomones. Here we report the first captures of adult and nymph BMSBs in traps baited with methyl (E,E,Z)-2,4,6-decatrienoate in central Maryland and present data verifying that the tachinid, Euclytia flava (Townsend), exploits methyl (E,Z,Z)-2,4,6-decatrienoate as a kairomone. We also report the unexpected finding that various isomers of methyl 2,4,6-decatrienoate attract Acrosternum hilare (Say), although this bug apparently does not produce methyl decatrienoates. Other stink bugs and tachinids native to North America were also attracted to methyl 2,4,6-decatrienoates. These data indicate there are Heteroptera in North America in addition to Thyanta spp. that probably use methyl 2,4,6-decatrienoates as pheromones. The evidence that some pentatomids exploit the pheromones of other true bugs as kairomones to find food or to congregate as a passive defense against tachinid parasitism is discussed.     

2007～2008年世界塑料工业进展

收集了2007年7月～2008年6月世界塑料工业的相关资料,介绍了2007～2008年国外塑料工业的发展情况,提供了世界塑料产量、消费量及全球各类树脂的需求量及产能情况.按通用热塑性树脂(聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂)、工程塑料(尼龙、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚)、特种工程塑料(聚苯·硫醚、液晶聚合物、聚醚醚酮)、通用热固性树脂(酚醛、聚氨酯、不饱和聚酯树脂、环氧树脂)不同品种的顺序,对树脂的产量、消费量、供需状况及合成工艺、产品应用开发、树脂品种的延伸及应用的进一步扩展等技术作了详细介绍.     

2005～2006年国外塑料工业进展

收集了2005年7月～2006年6月国外塑料工业的相关资料,介绍了2005—2006年国外塑料工业的发展情况。提供了世界塑料产量、消费量及全球各类树脂生产量以及各国塑料制品的进出口情况。作为对比,介绍了中国塑料的生产情况。按通用热塑性树脂（聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂）、工程塑料（聚酰胺、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚）、通用热固性树脂（酚醛、聚氨酯、不饱和树脂、环氧树脂）、特种工程塑料（聚苯硫醚、液晶聚合物、聚醚醚酮）的品种顺序,对树脂的产量、消费量、供需状况及合成工艺、产品开发、树脂品种的延伸及应用的扩展作了详细的介绍。