M（Ⅱ）（ATP）^2—与核酸碱基（腺嘌呤,胞嘧啶）三元混配配…

用ＰＨ电位滴定法测定 篱子（Ｍ＾２＋＝Ｃｕ＾２＋，Ｃｏ＾２＋，Ｎｉ＾２＝，Ｚｎ＾２＋，Ｃｄ＾２＋）与核酸碱基（Ｐ＝腺嘌呤，胞嘧啶）形成的二夫配合物以及与腺甘－５＇－三酸（ＡＴＰ）形成的三元混配配合物的稳定常数，三元配合物相对于二元酚物的稳定性用平衡常数ΔｌｇＫＭ大，这可能与三元混配配合物分子内存在配体间的芳环堆积、氢键作用以及πＡ－πＢ协同效应有关。     

M（Ⅱ）（ArP）~（2－）与核酸碱基（腺嘌呤，胞嘧啶）三元混配配合物稳定性研究

用ｐＨ电位滴定法测定了金属离子（Ｍ~（２＋）＝Ｃｕ~（２＋），Ｃｏ~（２＋），Ｎｉ~（２＋），Ｚｎ~（２＋），Ｃｄ~（２＋）与核酸碱基（Ｌ＝腺嘌呤，胞嘧啶）形成的二元配合物以及与腺昔－５’－三磷酸（ＡＴＰ）形成的三元混配配合物的稳定常数。三元配合物相对于二元配合物的稳定性用平衡常数表示。结果表明：ΔｌｇＫ_ｍ比咪唑或氨的相应配合物ΔｌｇＫ_ｍ大，这可能与三元混配配合物分子内存在配体间的芳环堆积、氢键作用以及π_Ａ－π_Ｂ协同效应有关。     

平衡移动测定MmRn型配合物组成和稳定常数的研究

根据平衡移动原理推导出一种有判别单核或多核配合物并直接测定ＭｍＲｎ型配合物和稳定常娄的平衡移动法公式ｌｇ（Ａｉ／（Ａｍａｘ－Ａｉ）＾ｍ）＝ｎｌｇｃＲ＋ｌｇ（ｍ．β．（ＣＭ／Ａｍａｘ）＾（ｍ－１）。用ＳＣ３＋＝ＣＰＡⅢ和Ｆｅ＾３＋ＣＡＳ两个配合反应体系加以验证，结果令人满意。     

杂多化合物的红外光谱研究

本文研究了与Ｋｅｇｇｉｎ结构相关的３１种３大系列（２：１８系列，１：１１系列和双系列）杂多化合物的红外光谱，它们是：ＮＰ２Ｗ１８（Ｎ＝（ＣＨ３）４Ｎ＾＋，（Ｃ２Ｈ５）４Ｎ＾＋，（Ｃ４Ｈ９）４Ｎ＾＋），ＭＰ２Ｗ１８（Ｍ＝Ｌｉ＾＋，Ｎａ＾＋，Ａｇ＾＋，Ｃｕ＾２＋）；ＫｎＺＷ１１（Ｚ＝Ｐ，Ｂ，Ｇｅ，Ｓｉ），ＭＳｉＷ１１（Ｍ＝Ｍｎ，Ｚｎ，Ｃｕ，Ｃｏ，Ｎｉ）和Ｍ（ＰＷ１１）２（Ｍ＝Ｃｅ，Ｐｒ，Ｎｄ，Ｓｍ，Ｅ     

Ni(Ⅱ)、Zn(Ⅱ)与苯甲酰丙酮双核配合物的合成和性质

合成了两个新的双氯桥联的同双核配合物，Ｍ２（ＢＺＡ）２．ｘＨ２Ｏ（ＢＺＡ＝苯甲酰丙酮烯醇式阴离子，Ｍ－＝Ｎｉ，ｘ＝１；Ｍ＝Ｚｎ，ｘ＝２），通过元素分析，红外光谱，固体反射光谱，磁化率测定对配合物进行了表征，测定了Ｎｉ（Ⅱ）配合物的变温磁化率（４－３００Ｋ），其数值用最小二乘法与从自旋Ｈａｍｉｌｔｏｎｉａｎ算符Ｈ＝２ｊｓ１．Ｓ２导出的磁化率理论曲线很好拟合，求得交换积分Ｊ＝－１．３６ｃｍ＾－＾１...     

钾（I）（4‘—溴苯并—15—冠—5）配合物的研究

合成了两种新型的固体配合物，其组成为Ｋ（ＢｒＢ１５Ｃ５）Ｘ（Ｘ＝ＮＣＳ＾－或Ｐｉｃ＾－）．钾（Ｉ）离子不仅能与４＇－溴苯并－１５冠－５形成常见的１：２夹心武配合物，而且还能生成稳定的１：１型（Ｍ：Ｌ）固体配合物。     

新试剂（MSBTAMB）双波长光度法测定微量铜（II）的研究

研究了新试剂２－〔２＇－（６＇－甲磺酰－苯并噻唑）偶氮〕－５－二甲氨基苯甲酸（ＭＳＢＴＡＭＢ）与铜（Ⅱ）的显色反应。试验表明，在ｐＨ２．０￣５．１和４０％乙醇介质中，Ｃｕ（Ⅱ）与ＭＳＢＴＡＭＢ形成１＋１稳定的配合物，其最大吸收波长为６４２ｎｍ，用单波长法测得配合物的Σ６４２＝６．７４×１０＾４Ｌ·ｍｏｌ＾－１·ｃｍ＾－１，双波长法测得的Σ６４２．５４６＝１．０９×１０＾５Ｌ·ｍｏｌ＾－１·ｃｍ＾－     

2,2′-(1,2-亚乙基双氮次甲基)二喹啉及其Cu2+、Zn2+、Ni2+、Mn2+配合物的合成与表征

本文报道２,２′－（１,２－亚乙基双氮次甲基）二喹啉及其与Ｃｕ２＋、Ｚｎ２＋、Ｎｉ２＋、Ｍｎ２＋配合物的合成,并通过元素分析、红外光谱、紫外光谱、Ｘ－射线粉末衍射、热分析及核磁共振等手段对配体和配合物进行了表征。配合物的化学组成为Ｍ．Ｌ．（ＣｌＯ４）２·Ｈ２Ｏ（Ｍ＝Ｃｕ２＋、Ｚｎ２＋、Ｎｉ２＋、Ｍｎ２＋离子;Ｌ＝Ｃ２２Ｈ１８Ｎ４）。     

铜与缓冲剂Bicine及芳香氮碱三元混配配合物的稳定性研究

用pH电位滴定法测定了HL的酸常数（L＝苯并咪唑，吡啶，3，4－二甲基吡啶，异喹啉）以及二元配合物CuL2＋和三元混配配合物Cu（Bic）L＋（Bic-＝Bicine的单电荷阴离子）的稳定常数．三元混配配合物相对于二元配合物的稳定性用△lgKCu＝lgKCu(Bic)Cu(Bic)L-lgKCuCuL来表示．结果表明由于δ-π协同效应和疏水作用，三元混配配合物有较强的稳定性     

稀土离子与伴清蛋白结合的光谱研究

在ｐＨ＝７．４和２５℃下，用紫外吸收差光谱进行了Ｅｕ＾３＋对脱伯伴清蛋白的滴定，Ｅｕ＾３＋与脱铁伴清蛋白结合后其差光谱在２４５ｎｍ和２９６ｎｍ处出现吸收峰，在２４５ｎｍ处Ｅｕ＾３＋脱铁伴清旧白配合物的摩尔吸光系数是（２．１±０．１）×１０＾４ｃｍ＾－１．Ｌ．ｍｏｌ＾－１，Ｅｕ＾３＋可占据脱铁伴清蛋白的２个金属离子结合部位，条件平衡常数ｌｏＫＮ＝８．２１±０．２０，ｌｇＫｃ＝４．６０±０．１１，脱铁     

Dichroism of absorption and polarization of phosphorescence of molecules of the closed form of nitrobenzospirothiopyran

The spectral-polarization characteristics of absorption and phosphorescence of molecules of the initial form of nitro-substituted indolinospirobenzothiopyran were studied in oriented polyethylene films and in solutions with different polarity. An oscillator model of the electron transitions responsible for the formation of absorption and luminescence spectra was suggested. It was established that the principal differences in the spectral and photophysical properties of the compound studied and its oxygen-containing analog are associated with the fact that the electronegativity of the S atom is lower than that of the O atom. Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1143–1146, June, 1997.     

Determination of heats of detonation and influence of components of composite explosives on heats of detonation of high explosives

The heats of detonation of 20 simple high explosives and explosive mixtures were determined by means of an adiabatic detonation calorimeter designed by the authors. The results indicated that the performance of the instrument was reliable and the experimental data were very accurate. For explosive mixtures, there was a linear accumulative relationship between the heats of detonation of the explosive mixture and its components. Accordingly, the heats of detonation of explosive mixtures could be calculated directly from the heats of detonation of simple explosives and the characteristic heats of other components. The experiments showed that the gold or brass shell of the cylindrical charge could be substituted by a thick-walled porcelain shell, which had the advantage of cheapness.

     

非那雄胺合成工艺改进

非那雄胺能抑制5α-还原酶的活性,明显降低二氢睾酮水平,是一种治疗良性前列腺增生的有效药品。该合成工艺以甾烯酮酸为原料,将其与氯化亚砜反应,无须分离即与叔丁胺反应得17β-酰胺化合物,再氧化开环,环合,氢化,脱氢合成了非那雄胺。经元素分析、IR、1HNMR、13CNMR、MS分析表征了其结构。该法无须使用昂贵的2,2-二吡啶二硫化物和剧毒药品苯亚硒酸酐,且以乙酸铵代替氨气,降低了对设备的要求和腐蚀,更适用于工业生产。     

Synthesis of phenolic components of Grains of Paradise

Two vanilloids, (5E)-8-(4-hydroxy-3-methoxyphenyl)oct-5-en-4-one (1) and 4-[3-hydroxydecyl]-2-methoxyphenol (2), isolated from the dried seeds of Grains of Paradise (Aframomum melegueta), were synthesized; the latter compound was made as the S-enantiomer and the material derived from the seeds was found to be a 1:1.7 mixture of the R and S isomers. The synthetic route used should allow the preparation of analogs having extended alkyl chains and consequently different lipophilicity, and 3, a homolog of 2, was also prepared.     

恶臭嗅辨实验室建设探讨

针对恶臭测试的环境影响问题,提出了解决的实例方案,并对方案的要点及优缺点进行讨论,此方案在实际操作中具有较好的效果。     

Summary of development of the theory of stability of colloids and thin films

In this review, the research of the author in the field of colloidal systems is summarized. The factors influencing colloidal stability are systematized and analyzed. Examples are presented to illustrate the practical utilization of the theory of stability of colloids and thin films.This review was prepared on the basis of the works of the author, which were awarded the State Premium for 1991 in the field of science and technology, chemistry section.Institute of Physical Chemistry, Russian Academy of Sciences, 117915 Moscow. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 8, pp. 1708–1717, August, 1992.     

Study of hydration of two cements of different strengths

Main hydration products of two cement pastes, i.e. CSH-gel, portlandite (P) (and specific surface S) were studied by static heating, and by SEM, TEM and XRD, as a function of cement strength (C-33 and C-43) hydration time (th) and subsequent hydration in water vapour.Total change in mass on hydration and air drying, M_o, increased with strength of cement paste and with hydration time. Content of water escaping at 110 to 220°C, defined as water bound with low energy, mainly interlayer and hydrate water, was independent on cement strength but its content increased with (th). Content of chemically bound (zeolitic) water in CSH-gel, escaping at 220-400°C, was slightly dependent on strength and increased with (th). It was possibly derived from the dehydroxylation of CSH-gel and AFm phase. Portlandite water, escaping at 400-500°C, was independent on cement strength and was higher on longer hydration. Large P crystals were formed in the weaker cement paste C-33. Smaller crystals were formed in C-43 but they increased with (th). Carbonate formated on contact with air (calcite, vaterite and aragonite), decomposed in cement at 600-700^oC. It was high in pastes C-33(1 month) and C-43(1 month), i.e. 5.7 and 3.3%, respectively; it was less than 1% after 6 hydration months (low sensitivity to carbonation) in agreement with the XRD study showing carbonates in the air dry paste (1month), and its absence on prolonged hydration (6 months) and on acetone treatment. Water vapour treatment of (6 months) pastes or wetting-drying increased this sensitivity.Nanosized P-crystals, detected by TEM, could contribute to the cement strength; carbonate was observed on the rims of gel clusters.This revised version was published online in November 2005 with corrections to the Cover Date.     

解决能源问题的新途径——光解水制氢的研究

面对日益枯竭的能源危机,氢能是一种洁净、最有前景的替代能源。目前在各种制氢的方法中光催化分解水制氢的研究最多,光解水过程中催化剂最关键,本文对利用太阳能光解水的途径、提高光催化反应效率以及光催化剂的开发研究进行了综述。     

黄酮化合物的合成研究进展

黄酮化合物是一类具有多种生物活性的天然产物,其经典的合成方法主要为查耳酮路线和β-丙二酮路线.近年来出现了许多新技术、新方法.本文介绍了2'-羟基查尔酮的氧化关环法、黄烷酮氧化法、改进的Baker-Venkataraman法及其他合成黄酮化合物的方法.