在二氯甲烷溶液里〔Cu（CH3CN）4〕〔MF6〕与碘化四丁铵的反应

在本实验中，研究了「Ｃｕ（Ｃｈ３ＣＮ）４」「ＭＦ６」与碘化四丁铵（Ｃ４Ｈ９）４ＮＩ在二氯甲烷（ＣＨ２Ｃｌ２）中的反应，研究结果表明，在ＣＨ２Ｃｌ２里，（Ｃ４Ｈ９）４ＮＩ水未能把「Ｃｕ（ＣＨ３ＣＮ）４」「Ｍ０Ｆ６」和「Ｃｕ（ＣＨ３ＣＮ）４」「ＷＦ６」中的Ｍ０和Ｗ还原成Ｍ０和Ｗ盐，通过分析得知，反应产物是ＣｕＩ和（Ｃ４Ｈ９）４ＮＭＦ６，配位体ＣＨ３Ｃ被脱出来，反应中鬈生Ｉ２。     

Gouy法测定[Cu（NH3）4]so4和[Co（NH3）6]Cl3的磁化率与配合物…

用古埃磁天平法测定［Ｃｕ（ＮＨ３）４］ＳＯ４和［Ｃｏ（ＮＨ３）６］Ｃｌ３的磁化率。根据测定得的摩尔磁化率ＸＭ，求出该配合物分子的磁矩Ｕｍ和未成对电子数，并推断［Ｃｕ（ＮＨ３）４］ＳＯ４和［Ｃｏ（ＮＨ３）６］Ｃｌ３的共价结构。     

在二氯甲烷溶液里碘化四丁铵对六氟合钼和六氟合钨的还原

在常温下，碘化四丁铵在二氯甲烷溶液里将六氟合钼和六氟合钨还原成ＭＦ－６（Ｍ＝Ｍ０或Ｗ）。它们的红外光谱表明，固体产物是由（Ｃ４Ｈ９）４Ｎ＋和ＭＦ－６组成；电子光谱也指出，在反应中有Ｉ２产生。进一步研究表明，在此条件下Ｍ０Ｆ－６没有被碘化四丁铵继续还原成Ｍ０Ｆ２－６。     

在二氯甲烷溶液里碘化四丁铵对六氟合钼对六氟合钨的还原

在常温下,碘化四丁铵在二氯甲烷液里将六氟合钼和六氟合钨还原成ＭＦ６＾－（Ｍ＝Ｍ０或Ｗ）。它们的红外光谱表明,固体产物是由（Ｃ４Ｈ９）４Ｎ＾＋和ＭＦ６＾－组成;电子光谱也指出,在反应中有Ｉ２产生。进一步研究表明,在此条件下Ｍ０Ｆ６＾－没有被碘化四丁铵继续还原成Ｍ０Ｆ６＾２－。     

Gouy法测定〔Cu（NH_3）_4〕SO_4和〔Co（NH_3）_6〕Cl_3的磁化率与配合物结构研究

用古埃（Ｇｏｕｙ）磁天平法测定（Ｃｕ（ＮＨ_３）_４）ＳＯ_４和（Ｃｏ（ＮＨ_３）_６）Ｃｌ_３的磁化率。根据测定得的摩尔磁化率Ｘ_Ｍ，求出该配合物分子的磁矩Ｕ_ｍ和未成对电子数，并推断（Ｃｕ（ＮＨ_３）_４）ＳＯ_４和（Ｃｏ（ＮＨ_３）_６）Ｃｌ_３的共价结构。     

双核锰配合物的合成和表征

合成了对称的六齿（Ｎ６型）双核配体Ｎ,Ｎ,Ｎ’,Ｎ’－四（２－甲基苯并咪唑）乙二胺（ＥＤＴＢ）及两种含锰（Ⅱ）双核配合物：［Ｍｎ２ＥＤＴＢ（ＣＨ３ＣＯＯ）２］（ＣＨ３ＣＯＯ）（ＣｌＯ４）·２ＣＨ３ＣＨ２ＯＨ·４Ｈ２Ｏ（Ⅰ）,［Ｍｎ２ＥＤＴＢ（ＣＨ３ＣＯＯ）２］（ＣＨ３ＣＯＯ）（ＮＯ３）·４ＣＨ３ＣＨ２ＯＨ（Ⅱ）,并对配体ＥＤＴＢ,配合物（Ⅰ）,（Ⅱ）进行了核磁共振氢谱（＾１ＨＮＭＲ）、紫外一可见光     

草酰二胺桥联的铜（Ⅱ）─镍（Ⅱ）双核配合物的合成、磁性及抗菌活性

合成和表征了３种以草酰胺为桥联的异双核配合物［Ｃｕ（ｏｘｐｎ）Ｎｉ（Ｌ）２］（ＣｌＯ４）２。ｏｘｐｎ代表Ｎ，Ｎ’－双（３－氨丙基）草酰胺根阴离子；Ｌ为４，４’─二甲基－２，２’－联吡啶（Ｍｅ２ｂｐｙ）；１，１０－邻菲啉（Ｐｈｅｎ）和５－硝基－１，１０－邻菲啉（ＮＯ２－Ｐｈｅｎ）。测定了配合物［Ｃｕ（ｏｘｐｎ）Ｎｉ（Ｍｅ２ｂｐｙ）２］（ＣｌＯ４）２的变温磁化率（４—３００ｋ）；其数值用最小二乘法和从自旋Ｈａｍｉｌｔｏｎｉａｎ算符（Ｈ＝－２ＪＳ１·Ｓ２）导出的磁方程拟合，求得交换积分Ｊ＝－９８．６ｃｍ－１，表明双核配合物中金属离子间存在弱的反铁磁性超交换作用。测试了配体及其配合物的杀菌活性，实验结果表明双核配合物的杀菌活性优于配体的杀菌活性。     

妊娠期心血管药物的合理应用

妊娠期心血管药物的合理应用刘东玲（湛江中医学校临床教研室，湛江５２４０２３）梁庆祥（广东医学院附属医院心内科）妊娠期约１０％的孕妇患有不同程度的高血压［１］，０．９％～２．６％的孕妇合并有心脏病［２，３］，且常并发充血性心力衰竭（ＣＨＦ）和心律失常，...     

亚氨基二乙酸盐酸盐的合成研究

研究了以氯乙酸为原料氨解合成亚氨基二乙酸盐酸盐的优化反应条件,提出了产物含量分析方法。物料摩尔比ｒ（ＣｌＣＨ２ＣＯＯＨ∶ＮＨ３∶Ｃａ（ＯＨ）２∶ＨＣｌ）＝１．０∶０．９∶１．０∶２．４;加料、反应、酸化、结晶的操作温度分别为２０～３０℃,（４５±２）℃,６０～８０℃,（０±２）℃;控制时间分别是４ｈ,６ｈ,０．５～１．０ｈ,８ｈ;所加入的氨和氯乙酸的质量分数分别为２５％和８０％。分析测定的变动系数为０．０３４％,添加回收率为９９．７２％。     

小麦根细胞质膜氧化还原系统对干旱胁迫反应与K+累积的关系

小麦根细胞质膜上存在ＮＡＤＨ－Ｋ３Ｆｅ（ＣＮ）６氧化还原酶。ＫＣＮ、ＳＨＡＭ及Ｎａ３ＶＯ４对其活性无影响，ＤＣＣＤ对其有轻微抑制作用。干旱胁迫下，抗旱性不同的两品种小麦根质膜ＮＡＤＨ－Ｋ３Ｆｅ（ＣＮ）６氧化还原酶变化趋势相似。小麦根存在跨膜Ｋ３Ｆｅ（ＣＮ）６还原系统。干旱胁迫下，Ｋ３Ｆｅ（ＣＮ）６还原活力下降，但能促进陕合６号小麦根的Ｈ＋分泌和Ｋ＋累积     

Synthesis of inorganic fullerene-like molecules

The reaction of [Cp*Fe(eta5-P5)] with Cu(I)Cl in solvent mixtures of CH2Cl2/CH3CN leads to the formation of entirely inorganic fullerene-like molecules of the formula [[Cp*Fe(eta5:eta1:eta1:eta1:eta1:eta1-P5)]12[CuCl]10[Cu2Cl3]5[Cu(CH3CN)2]5] (1) possessing 90 inorganic core atoms. This compound represents a structural motif similar to that of C60: cyclo-P5 rings of [Cp*Fe(eta5-P5)] molecules are surrounded by six-membered P4Cu2 rings that result from the coordination of each of the phosphorus lone pairs to CuCl metal centers, which are further coordinated by P atoms of other cyclo-P5 rings. Thus, five- and six-membered rings alternate in a manner comparable to that observed in the fullerene molecules. The so-formed half shells are joined by [Cu2Cl3]- as well as by [Cu(CH3CN)2]+ units. The spherical body has an inside diameter of 1.25 nanometers and an outside diameter of 2.13 nanometers, which is about three times as large as that of C60.     

Atmospheric residence time of CH3Br estimated from the junge spatial variability relation

The atmospheric residence time for methyl bromide (CH3Br) has been estimated as 0.8 +/- 0.1 years from its empirical spatial variability relative to C2H6, C2Cl4, CHCl3, and CH3Cl. This evaluation of the atmospheric residence time, based on Junge's 1963 general proposal, provides an estimate for CH3Br that is independent of source and sink estimates. Methyl bromide from combined natural and anthropogenic sources furnishes about half of the bromine that enters the stratosphere, where it plays an important role in ozone destruction. This residence time is consistent with the 0.7-year value recently calculated for CH3Br from the combined strength estimates for its known significant sinks.     

Electrochemical growth of highly conducting inorganic complexes

The formation of single crystals of highly conducting inorganic complexes, for example, K(2)Pt(CN)(4)X(0.3) . 3H(2)O (X = Cl, Br), K(1.75)Pt(CN)(4) . 1.5 H(2)O, or K(1.64)Pt(O(2)C(2)O(2)) . 2H(2)O, has been effected via electrochemical growth from concentrated aqueous solutions of potassium tetracyanoplatinate(II) and potassium bis(oxalato)platinate(II).     

Selective bond dissociation and rearrangement with optimally tailored, strong-field laser pulses

We used strong-field laser pulses that were tailored with closed-loop optimal control to govern specified chemical dissociation and reactivity channels in a series of organic molecules. Selective cleavage and rearrangement of chemical bonds having dissociation energies up to approximately 100 kilocalories per mole (about 4 electron volts) are reported for polyatomic molecules, including (CH3)2CO (acetone), CH3COCF3 (trifluoroacetone), and C6H5COCH3 (acetophenone). Control over the formation of CH(3)CO from (CH3)2CO, CF3 (or CH3) from CH3COCF3, and C6H5CH3 (toluene) from C6H5COCH3 was observed with high selectivity. Strong-field control appears to have generic applicability for manipulating molecular reactivity because the tailored intense laser fields (about 10(13) watts per square centimeter) can dynamically Stark shift many excited states into resonance, and consequently, the method is not confined by resonant spectral restrictions found in the perturbative (weak-field) regime.     

Atmospheric lifetimes of long-lived halogenated species

The atmospheric lifetimes of the fluorinated gases CF(4), C(2)F(6), c-C(4)F(8), (CF(3))(2)c-C(4)F(6), C(5)F(12), C(6)F(14), C(2)F(5)Cl, C(2)F(4)C(12), CF(3)Cl, and SF(6) are of concern because of the effects that these long-lived compounds acting as greenhouse gases can have on global climate. The possible atmospheric loss processes of these gases were assessed by determining the rate coefficients for the reactions of these gases with O((1)D), H, and OH and the absorption cross sections at 121.6 nanometers in the laboratory and using these data as input to a two-dimensional atmospheric model. The lifetimes of all the studied perfluoro compounds are >2000 years, and those of CF(3)Cl, CF(3)CF(2)Cl, and CF(2)ClCF(2)Cl are >300 years. If released into the atmosphere, these molecules will accumulate and their effects will persist for centuries or millennia.     

Structural aspects of reversible molecular oxygen uptake

The system IrX(CO)[P(C(6)H(5))(3)](2) in benzene solution adds mo lecular oxygen reversibly if X is chlorine and irreversibly if X is iodine. The crystal structure of the complex IrIO(2)(CO)[P(C(6)H(5))(3)](2) * CH(2)Cl(2) is reported here and compared with a previous study of the structure of IrClO(2)(CO)[P(C(6)H(5))(3)](2). The O-O bond length is 1.47 +/- 0.02 angstroms in the irreversibly oxygenated iodo-compound and 1.30 +/- 0.03 angstroms in the reversibly oxygenated chloro compound.     

自身阳离子型松香施胶剂及其施胶性能

以两条路线分别合成了自身阳离子型的N-(3-松香酰氧-2-羟)丙基-N,N,N-三甲基氯化铵和N-(3-松香酰氧-2-羟)丙基-N,N,N-三乙基氯化铵,并对其性能进行了简单分析和评价。结果表明,虽然这两种松香季铵盐具有较高的Zeta电位,能够不依赖于矾土的“架桥”作用而吸附于纸张的纤维表面,但是由于在合成中向松香分子上引入了较强的亲水基团,使其疏水性能下降,成纸施胶度较低,且耐老化性能略有下降,加上合成过程使成本增加,松香季铵盐不适于作施胶剂产品主要成分。     

3-（5-芝麻酚）-3-羟基氧化吲哚拼接衍生物和芝麻酚并吡喃螺环氧化吲哚拼接衍生物的合成研究

以取代靛红作为起始原料,通过和芝麻酚在10 mol%DABCO催化剂和二氯甲烷溶剂条件下的Aldol反应,高效合成3个未见文献报道的3-（5-芝麻酚）-3-羟基氧化吲哚（2a～2c）,产率为85%-92%。以取代靛红作为起始原料,通过和芝麻酚以及丙二腈在10 mol%DABCO催化剂和二氯甲烷溶剂条件下的三组分Domino反应,高效合成5个未见文献报道的芝麻酚并吡喃螺环氧化吲哚（3a-3e）,产率为87%-94%。底物取代基结构经1H NMR,13C NMR和MS（ESI）表征。     

梭鱼草对铜胁迫的光合适应性

以液培方法研究了不同质量浓度(0、5、10、20 mg·L-1)铜离子(Cu 2+)对梭鱼草叶片光合色素、气体交换参数和叶绿素荧光参数的影响,以探究梭鱼草对Cu 2+的光合适应能力。结果显示:低质量浓度Cu 2+对梭鱼草叶片光合色素质量分数没有显著影响,而较高质量浓度Cu 2+(≥10 mg·L-1)导致光合色素质量分数显著下降;随着溶液中Cu 2+质量浓度的升高,梭鱼草叶片净光合速率(P n)、蒸腾速率(E)、气孔导度(G s)和水分利用率(W U,E)显著下降,叶片饱和蒸气压亏缺(V P,D)增加,而饱间CO 2摩尔分数(C i)和气孔限制值(L s)无明显变化;在最高质量浓度Cu 2+处理条件下,梭鱼草叶片叶绿素最大荧光(F m)、可变荧光产量(F v)、PSⅡ潜在光合活性(F v/F o)、PSⅡ最大光化学效率(F v/F m)、单位面积电子传递的量子产额(E T,o/C S,o)及光合性能指数(P I,a,b,s)显著下降,反应中心净关闭速率(d V,G/d t,o和d V/d t,o)、比活性参数A B,S/R C、T R,o/R C、D I,o/R C及单位面积耗散掉的能量(D I,o/C S,o)则呈相反的变化趋势。梭鱼草叶片对5 mg·L-1 Cu 2+表现出较好的光合适应能力。随Cu 2+质量浓度升高,非气孔因素是梭鱼草叶片P n下降的主要原因。较高质量浓度Cu 2+处理下,梭鱼草叶片光合机构可以通过关闭部分反应中心、增加热耗散等途径缓解过量Cu 2+对光合机构的破坏。