六羰基钼体系催化环烯的开环聚合

六羰基钼体系催化环烯的开环聚合刘德海，蔡潮钟（湛江师范学院化学系湛江５２４０４８）关键词环戊烯，环己烯，聚－蒎烯，聚萜烯，开环聚合，羰基钼催化体系，三氯化铝本工作在前文［１，２］基础上，研究了光照下Ｍｏ（ＣＯ）６／ＣＨｎＸ４－ｎ（ｎ＝０，１；Ｘ＝Ｃｌ...     

Convenient and One-pot Method for Synthesis of the Amino-methylene Bisphosphonic Acid Derivatives from Aldehydes

Bisphosphonic acids and their ester derivatives, carbon analogues of inorganic pyrophos- phate, are the most important organophosphorus compounds and exhibit unique physical and chemical properties in interaction with the alkaline earth cations or heavy m…     

Imino Diels-Alder reactions: an efficient one-pot synthesis of pyrano and furanoquinoline derivatives catalyzed by SbCl3

Antimony trichloride (SbCl₃) was found to be an efficient catalyst for the inverse electron demand imino Diels-Alder reactions of in situ generated N-benzylidenes with 3,4-dihydro-2H-pyran and 2,3-dihydrofuran to afford pyrano and furano[3,2-c]quinolines in excellent yields.     

BCl3-promoted synthesis of benzofurans

Lewis acidic nature of boron trichloride (BCl₃) to coordinate to the carbonyl functionality was exploited for the synthesis of benzofurans via dehydrative cyclization. This mild and efficient procedure allowed for facile access to a number of highly substituted benzofurans in a regioselective manner. The structural requirement for the successful cyclodehydration was examined in the cases, where competitive demethylation could occur.     

An Efficient Synthesis of 1,5-Benzodiazepine Derivatives by Lanthanide Trichloride-catalyzed Condensation of o-Phenylenediamine with α,β-Unsaturated Ketone under Mild Conditions

三氯化稀土有效地催化了邻苯二胺与一系列α,β-不饱和酮的反应,在温和条件下以中等到高的收率生成1,5-苯并二氮杂卓。     

四(三苯基氧化膦)二氯稀土(Ⅲ)-三氯化铜(Ⅱ)配合物的合成和谱学性质

合成了通式为[LnCl_2(Ph_aPO)_4][CuCl_3](Ln=La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Y)的12种新配合物,X射线衍射结构分析证实[GdCl_2(Ph_2PO)_4][CuCl_3]中Gd(Ⅲ)为六配位畸变八面体形,Cu(Ⅱ)为三配位平面三角形.测定了所有配合物的红外光谱、~(31)P NMR和Cu(Ⅱ)的顺磁共振谱,并对[LnCl_2(Ph_3PO)_4][CuCl_3]的生成进行了讨论.     

Iron trichloride as oxidizer in acid slurry for chemical mechanical polishing of Ge2Sb2Te5

The effect of iron trichloride （FeC13） on chemical mechanical polishing （CMP） of Ge2Sb2Te5 （GST） film is inves- tigated in this paper. The polishing rate of GST increases from 38 nm/min to 144 nm/min when the FeC13 concentration changes from 0.01 wt% to 0.15 wt%, which is much faster than 20 nm/min for the 1 wt% H2O2-based slurry. This polish- ing rate trends are inversely correlated with the contact angle data of FeCl3-based slurry on the GST film surface. Thus, it is hypothesized that the hydrophilicity of the GST film surface is associated with the polishing rate during CMP. Atomic force microscope （AFM） and optical microscope （OM） are used to characterize the surface quality after CMP. The chemical mechanism is studied by potentiodynamic measurements such as Ecorr and Icorr to analyze chemical reaction between FeCl3 and GST surface. Finally, it is verified that slurry with FeCl3 has no influence on the electrical property of the post-CMP GST film by the resistivity-temperature （RT） tests.     

Investigation of the anodic decomposition of the solid electrolyte RbCu4Cl3I2

The process of electrochemical decomposition of the solid electrolyte RbCu₄Cl₃I₂ at a vitreous carbon electrode has been investigated. The anodic decomposition of the electrolyte occurs in two steps. At first, the oxidizing electrode reaction of Cu⁺ ions to Cu²⁺ ions takes place at potentials higher than 0.57 V and a layer of decomposition products is formed on the electrode surface, including the divalent copper compound RbCuCl₃. Then the oxidizing reaction of I^– ions occurs at potentials higher than approximately 0.67 V, with deposition of an iodine layer onto the electrode surface. The deposition rate of the layers of decomposition products is controlled by instantaneous nucleation and two-dimensional growth of the deposit. The total thickness of the passivating layer of decomposition products on the anode is equal to ca. 1 μm. Electronic Publication     

三氯化锑和二氧杂环己烷配合物[SbCl_3·{(CH_2)_4O_2}_(1.5)]的合成与晶体结构(英文)

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三氯化锑和二氧杂环己烷配合物[SbCl3·{(CH2)4O2}1.5]的合成与晶体结构

New solid complex of the antimony trichloride and dioxane was obtained th rough a reaction of the dioxane and the absolute methanol solution of the antimony trichloride.The formula of the complex is[SbCl₃·{(CH₂)₄O₂}_1.5].The crystal structure of the complex belongs to cubic system,space group I-43d,a=17.1417(5)Å,Z =16.The trivalent antimony ion n ot only bonds directly to three chlorine anions,but also is coordinated by three oxygen atoms of th e dioxane molecules.Two oxygen atoms in a dioxane molecule will coordinate to different antimony ions,respectively.