共查询到20条相似文献,搜索用时 15 毫秒
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3-(3-吡啶基)丙烯酸(3-HPYA)配体与过渡金属离子铅通过水热法合成了一种新的三维配位聚合物[Pb(3-HPYA)2]n(1),其结构经IR,元素分析和X-射线单晶衍射仪表征.1属于单斜晶系,空间群P2/c,晶胞参数:a=1.032 3(3)nm,b=1.6944(5)nm,c=0.864 9(3)nm,β=93.939(5)°,Z=1.509 2(8)nm3,Z=4,Mr=490.73,Dc=2.216 g·cm-3,F(000)=9444,μ=11.200. 相似文献
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用乙二胺作模板剂在水热条件下合成出一个新的三维开放骨架结构的亚磷酸铟[In2(HPO3)4]·(NH3CH2CH2NH3)(1), 并对其晶体结构进行了测定和表征. 相似文献
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Lotfali Saghatforoush Farzin Marandi Dr. Ingo Pantenburg Gerd Meyer 《无机化学与普通化学杂志》2009,635(11):1523-1526
[Pb(TpyCl)Cl][Pb(TpyCl)Cl2][PbCl3](CH3OH) ( 1 ), a new coordination polymer of divalent lead with the ligand 4′‐chloro‐2,2′:6′,2"‐terpyridine (TpyCl), was obtained as single crystals by the branched tube method. The crystal structure contains three complexes, the cationic [Pb(TpyCl)Cl]+, the neutral [Pb(TpyCl)Cl2] and the anionic [PbCl3]–, which are connected through bridging chlorides and hydrogen bonds to a two‐dimensional coordination polymer. In all three complexes, the arrangement around the Pb2+ ion suggests the existence of a stereoactive lone pair. 相似文献
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RE[CH2(CH2)4CONC4H9]3(NO3)3(RE=La,Dy)的合成和晶体结构 总被引:1,自引:0,他引:1
采用X-射线四园衍射仪测定了Dy「Ch2(CH2)4CONC4H9」3(NO3)3和La「CH2(CH2)4CONC4H3」3(NO3)3的晶体结构。两个配合物具有相似的结构,均属单斜晶系,空间群为P21/c。晶体参数:Dy「La」:a=1.8564(3)「1.8564(2)」nm,b=0.9769(2)「0.9834(1)」nm,c=2.1863(6)「2.20038(7)」nm,β=96.08 相似文献
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A. P. Borisov L. A. Petrova T. P. Karpova V. D. Makhaev 《Russian Chemical Bulletin》1994,43(12):2107-2109
Tris(4-imino-2-pentanonato)chromium was prepared by solid-state synthesis under conditions of mechanical activation of a mixture of chromium(III) chloride and sodium 4-imino-2-pentanonate and characterized by IR spectroscopy, X-ray diffraction, and electronic absorption spectroscopy.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 12, pp. 2227–2229, December, 1994.The present work was carried out as a part of Project No. 1.164 Mechanochemical Synthesis of Complex Compounds of The State Scientific and Technical Program Ecologically Safe Processes in Chemistry and Chemical Technology with the financial support of the Ministry of Science of the RF. 相似文献
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J. Szychliński J. Łubkowski J. Błazejowski A. Bujewski 《Journal of Thermal Analysis and Calorimetry》1987,32(6):1769-1772
The thermal decompositions of [Co(py)4.Cl2]2PbCl6 and [Ru(dipy)3]PbCl6 were examined by dynamic thermoanalytical methods and under isothermal conditions permitting quantitative determination of some of the reaction products. A comparative study of the corresponding chloride salts was also performed. Both groups of compounds decompose with the liberation of chlorine and organic ligands (and H2O in the case of the hydrates of the chlorides), and the process is accompanied by the simultaneous transitions Pb(4 +)Pb(2 +) and Co(3 +) Co(2 +). The ruthenium complex salts initially decompose without a change in the oxidation state of the Ru atom, but upon thermal treatment of the hexachloroplumbate certain chlorination products of the organic ligands are formed.
Zusammenfassung Mit Hilfe dynamischer thermoanalytischer Methoden und unter die quantitative Bestimmung einiger Reaktionsprodukte ermöglichenden isothermen Bedingungen wurde die thermische Zersetzung von [Co(py)4Cl2]2PbCl6 und [Ru(dipy)3]PbCl6 untersucht. Eine vergleichende Betrachtung der korrespondierenden Chloride wurde ebenfalls durchgeführt. Die Zersetzung beider Verbindungsgruppen geschieht unter Freisetzung von Chlor und organischen Liganden (bei den Hydraten der Chloride auch von Wasser) und ist von den übergängen Pb(4 +) Pb(2 +) bzw. (Co(3 +) Co(2 +) begleitet. Die Komplexsalze des Rutheniums zersetzen sich anfangs ohne Änderung der Oxydationsstufe des Rutheniumatoms, es bilden sich allerdings infolge von Wärmezufuhr aus dem Hexachloroplumbat verschiedene Chlorprodukte der organischen Liganden.
[Co(py)4l2]2PbCl6 [Ru(dipy)3]PbCl6 , . . , . . , .相似文献
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[CH3NH3][NH3(CH2)6NH3]H3[P2Mo2W16O62]·H2O的水热合成与表征 总被引:4,自引:0,他引:4
首次合成了[CH3NH3][NH3(CH2)6NH3]H3[P2Mo2W16O62]·H2O,通过元素分析、红外光谱和X射线单晶衍射对合成产物进行了表征,并用TGA-DSC研究了化合物的热稳定性.晶体属单斜晶系,P21/m空间群,a=1.2596(3)nm,b=1.8715(4)nm,c=1.9816(4)nm,α=γ=90°,β=90.16(3)°,V=4.671(2)nm3,Z=2,Mr=4358.66,Dc=3.100g·cm-3,μ=19.978mm-1,F(000)=3792,R=0.0835,Rw=0.2026.结果表明,在晶体结构内形成了0.7364nm×0.8354nm的微孔. 相似文献
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Solvent-free Synthesis of Tetramethylammonium Salts: Synthesis and Characterization of [N(CH3)4]2[C2O4], [N(CH3)4][CO3CH3], [N(CH3)4][NO2], [N(CH3)4][CO2H], and [N(CH3)4][O2C(CH2)2CO2CH3] A general procedure to synthesize tetramethylammonium salts is presented. Several tetramethylammonium salts were prepared in a crystalline state by solvent-free reaction of trimethylamine and different methyl compounds at mild conditions: [N(CH3)4]2[C2O4] (cubic; a = 1 114.8(3) pm), [N(CH3)4][CO3CH3] (P21/n; a = 813.64(3), b = 953.36(3), c = 1 131.3(4) pm, β = 90.03(1)°), [N(CH3)4][NO2] (Pmmn; a = 821.2(4), b = 746.5(3), c = 551.5(2) pm), [N(CH3)4][CO2H] (Pmmn; a = 792.8(7), b = 791.7(3), c = 563.3(4) pm) and [N(CH3)4][O2C(CH2)2CO2CH3] (P21; a = 731.1(2), b = 826.4(3), c = 1 025.2(3) pm, β = 110.1(1)°). The tetramethylammonium salts were characterized by IR-spectroscopy and X-ray diffraction. The crystal structures of the methylcarbonate and the nitrite are described. 相似文献
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Kamila Buzun Anna Kryshchyshyn-Dylevych Julia Senkiv Olexandra Roman Andrzej Gzella Krzysztof Bielawski Anna Bielawska Roman Lesyk 《Molecules (Basel, Switzerland)》2021,26(10)
A series of novel 5-[(Z,2Z)-2-chloro-3-(4-nitrophenyl)-2-propenylidene]-thiazolidinones (Ciminalum–thiazolidinone hybrid molecules) have been synthesized. Anticancer activity screening toward the NCI60 cell lines panel, gastric cancer (AGS), human colon cancer (DLD-1), and breast cancer (MCF-7 and MDA-MB-231) cell lines allowed the identification of 3-{5-[(Z,2Z)-2-chloro-3-(4-nitrophenyl)-2-propenylidene]-4-oxo-2-thioxothiazolidin-3-yl}propanoic acid (2h) with the highest level of antimitotic activity with mean GI50/TGI values of 1.57/13.3 μM and a certain sensitivity profile against leukemia (MOLT-4, SR), colon cancer (SW-620), CNS cancer (SF-539), melanoma (SK-MEL-5), gastric cancer (AGS), human colon cancer (DLD-1), and breast cancers (MCF-7 and MDA-MB-231) cell lines. The hit compounds 2f, 2i, 2j, and 2h have been found to have low toxicity toward normal human blood lymphocytes and a fairly wide therapeutic range. The significant role of the 2-chloro-3-(4-nitrophenyl)prop-2-enylidene (Ciminalum) substituent in the 5 position and the substituent’s nature in the position 3 of core heterocycle in the anticancer cytotoxicity levels of 4-thiazolidinone derivatives have been established 相似文献
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Synthesis, Vibrational Analysis, and Single Crystal Structure of Tetramethylammoniumcyanate [N(CH3)4]OCN By ionic exchange pure tetramethylammoniumcyanate [N(CH3)4]OCN was synthesized for the first time. Single crystals were investigated on a 4-circle-diffractometer. Structure solution and refinement was done in Pmn21. The structure may be derived from the CsCl-type with linear, non-symmetric cyanate-anions and tetrahedral, slightly distorted tetramethylammonium-cations. Vibrational spectra confirm the distortion of the cation which can be caused by weak O … H(C)-interactions. 相似文献
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~~1,2-二[3-(6,8-二叔丁基-3,4-二氢-1,3-苯并噁嗪)基]乙烷的合成及晶体结构@徐小平$苏州大学化学化工学院!江苏省有机合成重点实验室,江苏苏州215006
@姚英明$苏州大学化学化工学院!江苏省有机合成重点实验室,江苏苏州215006
@赵艺萍$江阴市长泾中学!江苏江阴214411
@张勇$苏州大学化学化工学院!江苏省有机合成重点实验室,江苏苏州215006
@沈琪$苏州大学化学化工学院!江苏省有机合成重点实验室,江苏苏州2150061,2-二[3-(6,8-二叔丁基.3,4-二氢-1,3-苯并噁嗪)基]乙烷;;合成;;晶体结构[1] Neuvonen K,Pihlaja K. J. Chan. Soc… 相似文献
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在冰浴条件下, 2-甲基噻吩(1)与液溴反应生成3,5-二溴-2-甲基噻吩(2); 在-78 ℃条件下, 硼酸三丁酯加入2, 得到2-甲基-3-溴-5-硼酸基噻吩(3); 3,4-二氟溴苯与3反应得到2-甲基-3-溴-5-(3,4-二氟苯基)噻吩(4); 在-78 ℃下全氟环戊烯与4反应, 得到一种新的二芳基乙烯类光致变色化合物1,2-双[2-甲基-5-(3,4-二氟苯基)噻吩-3-基]全氟环戊烯(DT-1). 用IR, NMR, MS和元素分析确定了化合物DT-1的结构, 并对该化合物的光致变色特性进行了初步研究. 相似文献
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Crown Ether Complexes of Lead(II). The Crystal Structures of [PbCl(18-Krone-6)][SbCl6], [Pb(18-Krone-6)(CH3CN)3][SbCl6]2 und [Pb(15-Krone-5)2][SbCl6]2 . [PbCl(18-crown-6)][SbCl6] has been prepared in low yield besides [Pb(CH3)2(18-crown-6)][SbCl6]2 by the reaction of Pb(CH3)2Cl2 with antimony pentachloride in acetonitrile solution in the presence of 18-crown-6, forming pale-yellow crystals. The other two title compounds are formed as colourless crystals by the reaction of PbCl2 with antimony pentachloride in acetonitrile solutions in the presence of 18-crown-6 and 15-crown-5, respectively. The complexes were characterized by IR spectroscopy and by crystal structure determinations. [PbCl(18-crown-6)][SbCl6]: Space group P21/c, Z = 8, 5 003 observed unique reflections, R = 0.046. Lattice dimensions at - 80°C: a = 1 386.9; b = 1 642.7; c = 2 172.1 pm, β = 92.95°. The lead atom in the cation [PbCl(18-crown-6)]+ is surrounded in an almost hexagonal-planar construction by the six oxygen atoms of the crown ether and an axially oriented Cl atom. [Pb(18-crown-6)(CH3CN)3][SbCl6]2: Space group P1 , Z = 2, 6 128 observed unique reflections, R = 0.076. Lattice dimensions at - 70°C: a = 1 228.0; b = 1 422.9; c = 1 463.2 pm, α = 69.08°; β = 65.71°; γ = 64.51°. In the cation [Pb(18-crown-6)(CH3CN)3]2+ the lead atom is coordinated by the six oxygen atoms of the crown ether and by the three nitrogen atoms of the acetonitrile molecules. The structure determination is restricted by disorder. [Pb( 15-crown-5)2][SbCI6]2: Space group P63/m, Z = 6, 5 857 observed unique reflections, R = 0.059. Lattice dimensions at -70°C: a = b = 2 198.5; c = 1499.4 pm, α = β = 90°, γ = 120°. In the cation [Pb(l5-crown-5)2]2 the lead atom is sandwich-like coordinated by the ten oxygen atoms of the two crown ether molecules. The structure determination is restricted by disorder. 相似文献