四(邻氟苄基)锡及一维链状三苄基锡二茂铁甲酸酯的合成、结构及性质

合成了四(邻氟苄基)锡(1)和一维链状三苄基锡二茂铁甲酸酯(2),经X射线衍射方法测定了化合物的晶体结构。化合物1属四方晶系,空间群I4₁/a,晶体学参数a=1.96794(16)nm,b=1.96794(16)nm,c=0.59316(5)nm,V=2.2972(3)nm³,Z=4,D_c=1.605g·cm^-3,μ(MoKα)=11.58cm^-1,F(000)=1112,R₁=0.0208,wR₂=0.0576。化合物2属单斜晶系,空间群为P2₁/n,晶体学参数:a=1.59354(12)nm,b=1.00723(8)nm,c=1.70026(13)nm,β=91.001(10)°,V=2.7286(4)nm³,Z=4,D_c=1.521g·cm^-3,μ(MoKα)=14.74cm^-1,F(000)=1256,R₁=0.0384,wR₂=0.0952。晶体的中心锡原子分别呈四配位畸变四面体构型和五配位畸变三角双锥构型。对其结构进行量子化学从头计算,探讨了配合物的稳定性、分子轨道能量以及部分前沿分子轨道的组成特征。测定了配合物的热稳定性和体外抗癌活性。     

一维链状μ-氯(氧)-三苄基锡的合成和结构研究

合成了两种具有新型结构的苄基锡化合物：一维链状μ-氯-三苄基锡(1)和一维链状μ-氧-三苄基锡(2)，经X-射线方法测定了化合物的晶体结构。晶体结构(1)属正交晶系，空间群为P2₁2₁2₁，晶体学参数：a=0.855 3(3) nm，b=1.081 4(4) nm，c=1.968 1(7) nm，V=1.820 4(11) nm³，Z=4，D_c=1.560 g·cm^-3，μ(Mo Kα)=15.47 cm^-1，F(000)=856，R₁=0.059 7，wR₂=0.141 5。晶体结构(2)属正交晶 系，空间群为P2₁2₁2₁，晶体学参数：a=1.982 3(4) nm，b=1.089 1(2) nm，c=0.861 1(17) nm，V=1.859 0(6) nm³，Z=4，D_c=1.458 g·cm^-3， μ(Mo Kα)=13.76 cm^-1，F(000)=820，R₁=0.032 7，wR₂=0.064 8。配合物中锡原子均呈五配位畸变三角双锥构型。     

四(邻氟苄基)锡及一维链状三苄基锡二茂铁甲酸酯的合成、结构及性质

合成了四(邻氟苄基)锡(1)和一维链状三苄基锡二茂铁甲酸酯(2),经X射线衍射方法测定了化合物的晶体结构.化合物1属为四方晶系,空间群I4₁/a,晶体学参数a=1.967 94(16) nm,b=1.967 94(16) nm,c=0.593 16(5) nm,V=2.297 2(3) nm³,Z=4,D_c=1. 605 g·cm^-3,μ(Mo Kα)=11.58 cm^-1,F(000)=1 112,R₁=0.020 8,wR₂=0.057 6.化合物2属单斜晶系,空间群为P2₁/n,晶体学参数:a=1.593 54(12) nm,b=1.007 23(8) nm,c=1.700 26(13)56 nm,β=91.001(10)°,V=2.728 6(4) nm³,Z=4,D_c=1.521 g·cm^-3,μ(Mo Kα)=14.74 cm^-1,F(000)=1 256,R₁=0.038 4,wR₂=0.095 2.晶体的中心锡原子分别呈四配位畸变四面体构型和五配位畸变三角双锥构型.对其结构进行量子化学从头计算,探讨了配合物的稳定性、分子轨道能量以及部分前沿分子轨道的组成特征.测定了配合物的热稳定性和体外抗癌活性.     

三(邻甲基苄基)氯化锡和二(对甲基苄基)二氯化锡的合成和晶体结构

将邻甲基氯苄和对甲基氯苄在适当的溶剂中与锡粉反应，合成了三(邻甲基苄基)氯化锡1和二(对甲基苄基)二氯化锡2，用X射线衍射方法测定了化合物的晶体结构。化合物(1)的晶体属三方晶系，空间群为R3，晶体学参数：a=1.329 36(8) nm，b=1.329 36(8) nm，c=2.147 0(3) nm，α=β=90°，γ=120°，V=3.285 8(5) nm³，Z=6，D_c=1.424 g·cm^-3，μ(Mo Kα)=12.93 cm^-1，F(000)=1 428，R₁=0.037 1，wR=0.110 2。化合物2的晶体属单斜晶系，空间群为C2/c，晶体学参数：a=2.850 4(3) nm，b=0.491 23(5) nm，c=1.215 32(12) nm，β=112.517(2)°，V=1.571 9(3) nm³，Z=4，D_c=1.690 g·cm^-3，μ(Mo Kα)=19.49 cm^-1，F(000)=792，R₁=0.038 0，wR₂=0.109 4；中心锡原子为畸变四面体配位构型。     

二(2-吡啶甲酸)二(邻氟苄基)锡和一维链状4-吡啶甲酸三(邻氟苄基)锡的合成和晶体结构

μ-氧-双[三(邻氟苄基)锡]与2-吡啶甲酸或4-吡啶甲酸在苯溶剂中反应合成有机锡配合物二(2-吡啶甲酸)二(邻氟苄基)锡(1)和一维链状4-吡啶甲酸三(邻氟苄基)锡(2)，经X射线衍射方法测定了新化合物的晶体结构。配合物(1)属四方晶系，空间 群为I4₁/a，晶体学参数：a=1.562 0(3) nm，b=1.562 0(3) nm，c=1.984 7(4) nm，α=β=γ=90°，V=4.842 4(16) nm³，Z=8,D_c=1.594 Mg·m^-3， μ(Mo Kα)=11.06 cm^-1，F(000)=2 320，R₁=0.024 3，wR=0.062 5。配合物(2)属单斜晶系，空间群为P2₁/n，晶体学参数：a=0.869 8(3) nm，b=1.880 5(7) nm，c=1.475 1(5) nm，β=90.937(6)°，V=2.412 3(15) nm³，Z=4，D_c=1.564 Mg·m^-3，μ(Mo Kα)=11.07 cm^-1，F(000)=1 136，R₁=0.028 8，wR₂=0.057 9；配合物1为单体结构，中心锡为六配位畸变八面体构型。配合物2通过4-吡啶甲酸配体氮原子的桥联，形成五配位三角双锥型的链状结构。     

三(3,5-二甲基苄基)氯化锡和四(间氰基苄基)锡的合成、晶体结构和量子化学研究

以3,5-二甲基苄基氯和间氰基苄基氯在适当的溶剂中与锡粉反应,合成了三(3,5-二甲基苄基)氯化锡(1)和四(间氰基苄基)锡(2),经X射线衍射方法测定了化合物的晶体结构。化合物1属单斜晶系,空间群为P2₁/m,晶体学参数:a=0.584 03(4) nm,b=1.966 37(14) nm,c=0.856 46 (5) nm, β=95.138(3), V=0.979 62(11) nm³,Z=2,D_c=1.735 g·cm^-3,μ(Mo Kα)=14.53 cm^-1,F(000)=524,R₁=0.043 7,wR₂=0.1232。化合物2属单斜晶系,空间群为C2/c,晶体学参数:a=1.692 21(12) nm,b=1.167 41(8) nm,c= 1.539 41(11) nm,β=116.615(10)°,V=2.718 9(3) nm³,Z=4,D_c=1.424 g·cm^-3,μ(Mo Kα)=9.67cm^-1,F(000)=1 176,R₁=0.017 5,wR₂=0.046 1;中心锡原子为畸变四面体构型。对其结构进行量子化学从头计算,探讨了配合物的稳定性、分子轨道能量以及部分前沿分子轨道的组成特征。     

三苄基锡吗啉二硫代氨基甲酸盐的合成、表征及晶体结构

利用三苄基氯化锡和吗啉二硫代氨基甲酸钠反应,合成了三苄基锡吗啉二硫代氨基甲酸盐。通过元素分析、红外光谱、核磁共振氢谱和质谱对其结构进行了表征。用X-射线单晶衍射测定了该化合物的晶体结构。化合物为三斜晶系,空间群P1,a=0.98417(16)nm,b=1.08163(19)nm,c=1.3788(2)nm,α=72.850(3)°,β=88.895(3)°,γ=64.231(3)°,Z=2,V=1.2528(4)nm³,D_x=1.469g·cm^-3,μ(MoKα)=1.204mm^-1,F(000)=564,R₁=0.0215,wR₂=0.0531。化合物中,锡原子呈五配位畸变三角双锥构型。     

二苄基锡水杨醛缩邻氨基苯酚Schiff碱配合物的合成、结构及荧光性质研究

二苄基二氯化锡和水杨醛缩邻氨基苯酚Schiff碱按物质的量比1:1反应, 合成了二苄基锡水杨醛邻缩氨基苯酚Schiff碱配合物。经X-射线衍射方法测定了其晶体结构, 属单斜晶系, 空间群为P2₁/n, 晶体学参数a=1.110 03(3) nm, b=1.719 87(5) nm, c=1.176 09(3) nm, β=100.564 0(10)°, V=2.207 23(10) nm³, Z=4, D_c=1.541 g·cm^-3, μ(Mo Kα)=11.81 cm^-1, F(000)=1 023, R₁=0.026 8, wR₂=0.061 9, 中心锡原子为五配位的畸变三角双锥构型。对其结构进行量子化学从头计算, 探讨了配合物的稳定性、分子轨道能量以及部分前沿分子轨道的组成特征。研究了配合物的荧光性质。     

三(3,5-二氟苄基)氯化锡和四(邻氯苄基)锡的合成、晶体结构及量子化学

3,5-二氟苄基氯和邻氯基苄基氯在适当的溶剂中与锡粉反应,合成了三（3,5-二氟苄基）氯化锡（1）和四（邻氯苄基）锡（2）,经X射线衍射方法测定了新化合物的晶体结构。化合物1属单斜晶系,空间群为C2/c,晶体学参数：a=1.858 33（11）nm,b=1.140 98（7）nm,c=2.690 06（16）nm,β=109.288（10）°,V=5.383 6（6）nm³,Z=8,D_c=1.532 g·cm^-3,μ（Mo Kα）=13.61 cm^-1,F（000）=2 480,R₁=0.085 1,wR₂=0.168 1。化合物2属单斜晶系,空间群为P2₁/m,晶体学参数：a=0.585 54（5）nm,b=1.969 74（18）nm,c=0.857 86（8）nm,β=95.204 0（10）°,V=0.985 34（15）nm³,Z=2,D_c=1.805 g·cm^-3,μ（Mo Kα）=14.91 cm^-1,F（000）=524,R₁=0.054 0,wR₂=0.163 9;中心锡原子为畸变四面体构型。对其结构进行量子化学从头计算,探讨了化合物的稳定性、分子轨道能量以及部分前沿分子轨道的组成特征。测定了化合物的热稳定性。     

μ-氧-双(三苄基锡)的合成及晶体结构

用X-射线衍射方法测定了μ-氧-双(三苄基锡)的晶体结构，该化合物晶体属三方晶系，空间群为R3，晶体学参数：a=b=c=0.9646 nm，α=β=γ=83.99(1)°，V=0.8840 nm³, Z=1, D_x=1.503 g·cm^-3, μ=14.473 cm^-1, F(000)=402, R相似文献   

Physico-chemical properties of Chitosan films

Chitosan films obtained by dry phase inversion were prepared from an aqueous solution of chitosan in acetic acid. The films, of thickness less than 20 μm, were transparent, very flexible and had smooth surfaces. Increasing the film thickness induced an increase of the internal tensions and the consequent formation of a rough surface. Structural investigations by X-ray diffraction and Fourier transform IR analysis, showed that the chitosan films, as prepared, are amorphous. Further annealing to evaporate acetic acid and water traces, changed the amorphous phase into a more ordered phase, characterized by diffraction peaks at 2θ values of 9, 17, 20 and 23 degrees. Thermal investigations by TG, DTG, and DTA revealed that the decomposition of the chitosan films as prepared proceeds in two stages, starting from 180°C and 540°C.     

Pyrazoles as molecular probes to study the properties of co-crystals by solid state NMR spectroscopy

Equimolar mixtures of 3,5-dimethylpyrazole (1) with four NH-imidazoles (2–5) have been studied by¹³C and ¹⁵N CPMAS NMR and by DSC. In three cases, the solid mixture behaves as the sum of the individual components [imidazole (2), 2-methylimidazole (3) and 2,4(5)-dimethylimidazole (5)]. In one case [4,5-dimethylimidazole (4)], the mixture corresponds to a new species in which the dynamic behavior of1 no longer exists.     

Aqueous p-nitrotoluene oxidation induced with direct glow discharge plasma

A plasma induced degradation process has been studied to treat 4-nitrotoluene (4-NT) present as an aqueous pollutant. The plasma was locally generated from a glow discharge around a tip of a platinum anode in an electrolytic solution. The influence of initial pH and Fe²⁺ on the degradation was examined. Major intermediates resulting from the degradation process were identified. Amongst the aromatic intermediates, p-hydroxybenzoic acid was the predominant degradation product. The formation of oxalic acid, malic acid was also observed. The final products of degradation were NH ₄ ⁺ , NO ₃ ⁻ and CO₂. Based on the analysis of intermediates and the kinetic considerations, the degradation was shown to follow a pseudo-first order reaction hence, a possible reaction pathway was proposed.     

Catalytic air oxidation of manganese in synthetic waters

An attempt was made to study the oxidation of manganese by air in synthetic waters. A series of batch experments were performed at differnet values of concentration, temperature and pH. Unoxidized manganese in the solution was determined by formaldoxime spectrometric method. Results of these studies indicated that the air oxidation of manganese soluble in water can be effectively performed in basic media and that oxidation yield increasedwith an increase in pH and concentration. The yield was very high in the presence of manganese dioxide, sepiolite or clinoptilolite in solution and, the oxidation was almost completed especially at high values of pH and concentration. The reaction was found to be first order with respect to Mn²⁺ with a very low activation energy. A yield of 62% was obtained for the air oxidation of wastewater taken from the treatment plant of Corum Municipality.     

Zur Kenntnis der Reaktionsfähigkeit des Thiomorpholins und alkylsubstituierter Thiomorpholine, 4. Mitt.

Thiomorpholine as well as alkyl substituted thiomorpholines and their Sdioxides, respectively, are transformed into the corresponding N-Aminothiomorpholines by nitrosation (1–5) followed by the reduction with zinc in acetic acid/acetic acid anhydride under simultaneous formation of the corresponding N-acetyl derivates, and hydrolysis by hydrochloric acid (6–9). Examples of this method are described. 4-Aminothiomorpholines and their Sdioxides react with aldehydes or ketones to give azomethines (10–31). Acylation with mono-and dicarbonic acid chlorides leads to the N-acyl derivatives32–44.Mannich condensation is also possible. By oxidation with yellow mercury oxide tetracenes are formed (46–47).

Teil der DissertationM. Schmitz, Techn. Hochschule Aachen, 1975.     

Beiträge zur Chemie der Pyrrolpigmente, 39. Mitt.: Ein Kraftfeldmodell zur konformationsanalytischen Untersuchung von Gallenfarbstoffen

A force field model was designed with respect to the special needs of bile pigments. It is parametrized and tested using partial structures of bile pigments as well as an integral pigment; the solution structures of the molecules were previously deduced using independent experimental methods.

38. Mitt::Falk, H., Schlederer, T., Wolshann, P., Mh. Chem.112, 199 (1981).     

Präparation und röntgenographische Untersuchung eines neuen Kupfer-Oxoaluminats: Cu2Al4O7

Solid state reaction of CuO and Al₂O₃ with a flux of PbO about 930°C and reaction time of 8d gives the new compound Cu₂Al₄O₇. The red single crystals were examined by energydispersive microanalysis and X-ray diffraction methods. Cu₂Al₄O₇ has cubic symmetry, space group ,a=908.0 pm. The typical coordination of Cu⁺ (CN=6 and CN=12) and the interstitial arrangement of the AlO₄-tetrahedra are discussed with respect to related compounds.

     

Hydrazyl,Nitronyl-, and imino-nitroxides: Synthesis,properties and reaction with nitric oxide and nitrogen dioxide

Ten novel and stable free radicals of nitronyl-, imino-nitroxide and hydrazyl type compounds were synthesized and their physico-chemical properties investigated. UV-Vis and ESR spectroscopic data, as well as the lipophilicities and specific hydrophobic areas of the compounds are compiled. The reaction of these radical compounds with nitric oxide and nitrogen dioxide was also investigated. The radicals synthesized, show selectivity in their reaction with these nitric oxides, depending on their structure (nitronyl-nitroxide radicals react with NO, while hydrazyl radicals react with NO₂). The processes are easily monitored by UV-Vis or ESR spectroscopy.     

A kinetic method for <Emphasis Type="Italic">para</Emphasis>-nitrophenol determination based on its inhibitory effect on the catalatic reaction of catalase

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Neue Synthesemethoden, 4. Mitt.: Milde einphasenoxidation von Sulfiden und Sulfoxiden zu Sulfonen

The mild oxidation of sulfides and sulfoxides to sulfones with benzyltriethylammoniumpermanganate in organic solvents is described.

1Scholz, D., in Vorbereitung.