Hydrothermal synthesis of the two-dimensional coordination polymer {[Fe(phen)(OH)](bta)(0.5)}(n) (phen=1,10-phenanthroline, bta=benzene-1,2,4,5-tetracaboxylate)

The title two-dimensional coordination polymer was synthesised and characterised by X-ray diffraction analysis.

A manganese molybdenum phosphate with a tunnel: hydrothermal synthesis, structure and catalytic properties of (NH3CH2CH2NH3)(10-)H3O)(3)(H5O2)Na-2[MnMo12O24(OH)(6)(PO4)(4)(PO3OH)(4)]-[MnMo12O24(OH)(6)(PO4)(6)(PO3OH)(2)] center dot 9H(2)O

A manganese molybdenum phosphate, (NH3CH2CH2NH3)(10)(H3O)(3)(H5O)Na-2[MnMo12O24(OH)(6) (PO4)(4)(PO3OH)(4)][MnMo12O24 (OH)(6)(PO4)(6)(PO3OH)(2)]. 9H(2)O, has been hydrothermally synthesized and structurally characterized by single crystal X-ray diffraction. The structure of this compound may be considered to be two [Mo6O12(OH)(3)(PO4)(2)(HPO4)(2)](7-) units bonded together by a manganese atom, although several P-O groups are not protonated on account of coordination to a Na+ cation. One-dimensional tunnels were formed in the solid. A probe reaction of the oxidation of acetaldehyde with H2O2 using this compound as catalyst was carried out in a liquid-solid system, showing that the manganese molybdenum phosphate has high catalytic activity in the reaction.

The origin of nonlinearities in K[B5O6(OH)(4)]center dot 2H(2)O crystal

In this paper the origin of nonlinearities of the K[B5O6(OH)(4)].2H(2)O(KB5) crystal has been investigated from a comprehensive view-point by using the bond-valence theory of complex crystals. The results of the calculation (d(31) = -1.18 X 10(-10) esu, d(32) = 0.20 X 10(-10) and d(33) = -1.03 X 10(-9) esu) are in good agreement with experimental data. For the first time we pointed out that its nonlinearities come from the H(2)-O(2) bonds and the [B5O6(OH)(4)](-) group, and estimated its larger nonlinear optical (NLO) coefficient d(33).

An ESR study on (OH)-O-center dot-radical scavenging activity of water-soluble fullerenols

Water-soluble polyhydroxylated fullerene derivatives (fullerenol) were synthesized, and their scavenging ability for (OH)-O-.-radical was studied by the combination of ESR spectroscopy and spin-trapping technique with phenyl-t-butyl-nitrone. It was found that fullerenols showed an excellent efficiency in eliminating (OH)-O-. free radicals generated by UV photolysis of H2O2. At an applied fullerenol concentration of 0, 3 mg/mL in the final solution, a radical scavenging efficiency of approximate 95% was achieved, revealing the potential use of these compounds as novel potent free radical scavengers in biological systems.

Convenient preparation and properties of C-60(OH)(x)

In this paper, we introduce a very convenient method to produce water soluble C-60 derivatives- fullerols by the reaction of C-60 with potassium in toluene solution, FT-IR, H-1 NMR and FABMS proved the multi-hydroxyl and C-60 cage structures of the products, The properties of unstability to light, heat, basicity of aqueous solution and the solubility in some common polar solvents were also described.

C_（60）（OH）_x的简便合成及性质

Ｃ_（６０）（ＯＨ）_ｘ的简便合成及性质孙大勇，刘子阳，郭兴华，佘益民，周雨，刘淑莹（中国科学院长春应用化学研究所应用谱学开放实验室，长春，１３００２２）关键词Ｃ_（６０），水溶性富勒醇，钾，不稳定性，溶解度水溶性Ｃ６０化合物的合成及性质研究作为Ｃ６０?..

富勒醇清除·OH自由基的ESR研究

富勒醇清除·ＯＨ自由基的ＥＳＲ研究祝严师，孙大勇，刘桂珍，刘子阳，詹瑞云，刘淑莹（中国科学院长春应用化学研究所应用谱学开放实验室，长春，１３００２２）关键词Ｃ_（６０），富勒醇，ＯＨ自由基，自旋捕捉，ＥＳＲ生物体内的许多现象均涉及到自由基反应，现已发?..

ELECTROCHEMISTRY, SPECTROELECTROCHEMISTRY OF (TPP)CO IN THE PRESENCE OF OH-ANIONS

In the presence of OH- anions, electrochemical redox reactions of cobalt tetraphenylporphyrin (TPP)Co were investigated in EtCl2 solution by thin-layer cyclic voltammetry and spectroelectrochemistry. In the pressence of OH-, OH- was axially coordinated to

OH~-存在下四苯基卟啉合钴氧化过程的电化学和光谱电化学

本文利用薄层伏安和现场光谱电化学方法考察了在EtCl_2中OH~-存在下四苯基卟啉合钴(TPP)CO~Ⅱ的电极氧化反应. 在低浓度OH~-存在下,(TPP)CO~Ⅱ与OH~-生成一配位的配合物(TPP)CO~Ⅱ(OH)~-,此配合物不可逆地被氧化为(TPP)CO~Ⅲ(OH)~-,氧化峰电位负移到0.53V,而卟啉环第一步氧化电位也负移到0.88 V.在高浓度OH~-存在下,(TPP)CO~Ⅱ(OH)~-氧化生成(TPP)Ca~Ⅲ(OH)_2~(2-),氧化电位随OH~-度增加向负移.卟啉环第一步和第二步氧化电位分别负移到0.57V和1.07V.同时观察到第二步氧化伴随后行化学反应,产物氧化电位在1.32V.测定了(TPP)CO~Ⅱ(OH)~-,(TPP)CO~Ⅲ(OH)~-和(TPP)Co~Ⅲ(OH)_2~(2-),(TPP)~+Co~Ⅲ(OH)~-和(TPP)~+Co~(Ⅲ)(OH)_2~(2-)各级配位化合物稳定常数.提出一个在OH~-滴定过程中(TPP)Co的各步配位反应及电化学反应的机理.

叶绿素a光诱导产生O_2~/OH氧自由基

将ESR自旋捕俘技术应用于氧的瞬时自由基测定,为叶绿素a Chα光诱导化学行为的研究,提供了更为有力的手段。Harbour和Bolton用自旋捕俘剂DMPO(5,5-Dimethyl-1-pyrroline-N-oxide)首次证明,在光照下叶绿体可产生O_2。他们又用DMPO证明,Chla于光照下有少量OH自由基产生。继而Van Ginkel于1980年报导用分离出来的

LaX_3(X=F、Cl、Br、OH)晶体中的化学键参数计算

稀土化合物中稀土离子和配位体的成键性质一直是人们注意研究的课题之一,一般认为属于离子键,但具有少量的共价性,然而,具体的数量级尚不清楚。本文利用Phillips,VanVechten和Levine理论,对LaX_3(X=F、Cl、Br、OH)晶体的键性和有关参数进行了具体计算,定量指出了镧离子和配体成键的离子性和共价性程度,比较了各晶体中有关的键参数,发现了和宏观物理现象相关的规律。1 理论公式