银—邻菲啰啉—二溴苯基荧光酮三元配合物及其分析应用──分光光度法测定银

本文研究了银─邻菲琳─二溴苯基荧光酮的显色反应,提出了测定微量银的分光光度法。雕ｐＨ为６．５,分子组成比为Ａｇ￣＋：ｐｈｅｎ：ＤＢＰＦ＝１：２：１,表观摩尔吸光系数ε＿５６０＝３．２４×１０￣４Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）,银含量在０～５０μｇ／     

三核锰配合物[Mn_3O(O_2CCH=CHCH_3)_6(py)_3]ClO_4·py的合成,晶体结构及磁性(英文)

0 Introduction Molecular-based magnetic materials have attractedmuch attention in designing and synthesizing a newclass of magnetic clusters with high spin ground stateand high critical temperature. The synthesis andmagnetic properties of oxo-centered trinuclear man-ganese complexes have been a focus of intense research     

人造血液中氟碳化合物的色谱定量分析

氟碳化合物的定量分析,过去采用常规的氧瓶燃烧法。由于全氟碳化合物的热稳定性高,挥发度大,燃烧不易完全,分析误差较大,并且燃烧法不能测出氟碳混合物中各组份的含量,所以我们以气相色谱内标法来进行氟碳乳剂中各组份的定量分析。人造血液经乙醇破乳,离心,用F113提取,水洗并用无水硫酸钠干燥后取1ml样品溶液,精确加入1ml 2％全氟苯的F113标准溶液进行色谱定量分析,从标准曲线中各组份对内标化合物的峰高或峰面积的比值,可以计算出氟碳化合物的含量。我们对五种氟碳化合物,用氢火焰离子检测器,分别作出标准曲线及最低检出量。对混合氟碳乳剂的测定,用5m长DNP柱,结果较为满意,其中两个氟碳组份和全氟苯的保留时间分别为3′5″、4′10″和11′40″。我们也用上述色谱方法研究人造血液在动物体内各脏器(肝、脾、肺、肾、骨髓)和血液中的分布及代谢速率,并对人造血液在人体血液中的代谢动力学进行了初步研究,得到较好的结果。     

1,2,3-三氮杂苯-水簇复合物氢键结构与性质的理论研究

在B3LYP/6-31 G**水平上对1,2,3-三氮杂苯和水形成1∶1,1∶2和1∶3复合物的基态氢键结构进行几何优化和性质计算,结果表明复合物之间存在较强的氢键作用。氢键的形成使水分子中H-O键振动频率减小(红移)。NBO分析表明,最稳定的1∶1,1∶2和1∶3复合物发生分子间电荷转移总量分别为0.0222e,0.0261e和0.0273e。     

混合价三核锰配合物Mn3O(O2CCCl3)6(py)2(H2O)的合成、晶体结构及磁性

A new mixed-valence trinuclear oxo-centered manganese complex Mn₃O(O₂CCCl₃)₆(py)₂(H₂O) was prepared by the reaction of NⁿBu₄MnO₄ with Mn(OAc)₂·4H₂O, trichloroacetic acid and pyridine in absolute EtOH. The crystal structure was determined. The complex crystallizes in monoclinic, space group P2₁/c, unit cell parame-ters, a=14.951(1), b=20.791(2), c=17.882(1)?,α=γ=90°, β=102.67(1)°. Variable temperature solid state magnetic susceptibility study shows that the complex has an antiferromagnetic exchange interaction. CCDC: 183369.     

双吡唑桥联的大环状钯(Ⅱ)配合物的合成与结构(英)

A dipyrazol-bridged macrocyclic palladium(Ⅱ) complex [{Pd(en)}₄L₄](NO₃)₈ (en=ethylenediamine, L=3,3′,5,5′-tetramethyldipyrazol) 1 was prepared in water through a [4+4] macrocyclization of cis-(ethylenediamine)Pd(Ⅱ) nitrate and the neutral form of the dipyrazol ligand 3,3′,5,5′-tetramethyldipyrazol. This cationic palladium macrocycle is highly distorted rather than a planar macrocycle and can hold eight nitrate anions around the macrocyclic framework through both hydrogen bonding and electrostatic interactions. CCDC: 192017.     

TATB/氟聚物PBX力学性能、结合能和爆炸性能的模拟计算

Molecular dynamics （MD） method was used to simulate 1,3,5-triamino-2,4,6-trinitrobenzene （TATB） coated with fluorine containing polymers. The mechanical properties and binding energies of PBXs were obtained. It was found that when the number of chain monomers of fluorine containing polymers was the same, the elasticity of TATB/F2314 was increased more greatly than others and the binding energy of TATB/F2311 was the largest among four PBXs. Detonation heat and velocity of such four PBXs were calculated according to theoretical and empirical formulas. The results show that the order of detonation heat is TATB〉TATB/PVDF〉TATB/F2311〉TATB/ F2314 〉 TATB/PCTFE while the order of detonation velocity is TATB/PVDF 〈 TATB/F2311 〈 TATB/F2314 〈 TATB/PCTFE 〈TATB.     

2-(二硝基亚甲基)-4,5-咪唑烷二酮与甲醇的反应研究

以2-甲基咪唑为原料合成2-(二硝基亚甲基)-4,5-咪唑烷二酮(1), 收率为33.9% (16.8%文献值), 首次采用低碳液态醇实现1的开环反应, 产物为FOX-7. 对反应条件进行了优化, 对比了甲醇、甲酸、氨水三种亲核试剂的开环效果, 开环试剂为甲醇时, FOX-7收率为94.6%, 高于文献值(87.4%). 研究了1的络合性能, 合成了1的甲醇加合物2并进行了结构表征. 对开环反应机理和乙二酰脲的形成机理进行了探讨.     

高聚物包覆法抑制NTO酸性腐蚀的XPS实验研究

采用高聚物包覆方法制得了NTO/F2311药柱,用XPS测试了药柱与不锈钢、铝、铜等金属高温接触贮存期间的NTO酸性腐蚀作用.结果表明,NTO/F2311药柱与金属在高温接触贮存期间未发生酸性腐蚀,F2311具有抑制NTO酸性腐蚀的作用;样品表面各种原子的迁移变化不明显,F2311中含氯链段发生取向为药柱深层的迁移,而含氟链段发生取向为药柱表面的迁移;药柱表面组分的迁移存在着的取向性使表面层组分的电子云密度降低以及峰位结合能增大,起到了抑制NTO酸性腐蚀的作用.