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1.
Ten solid complexes of zinc nitrate with L-α-leucine(Leu), L-α-valine(Val), L-α-tryptophan(Try) and L-α-threonine(Thr) were prepared in water. The compositions of these complexes are determined by chemical analysis and elemental analysis, which are identified as Zn(Leu)(NO3)2·2H2O(A), Zn(Leu)2(NO3)2·H2O(B), Zn(Val)(NO3)2·2H2O(C), Zn(Val)2(NO3)2·H2O(D), Zn(Val)3(NO3)2·H2O(E), Zn(Try)(NO3)2·2H2O(F), Zn(Try)2(NO3)2·H2O(G), Zn(Thr)(NO3)2·2H2O(H), Zn(Thr)2(NO3)2·H2O(I) and Zn(Thr)3(NO3)·H2O(J). The constant-volume combustion energies of the complexes, ΔcU(complex), were determined by a precise rotating bomb calorimeter at 298.15K. Standard enthalpies of combustion,ΔcHm?(complex, s, 298.15K), and standard enthalpies of formation, ΔfHm?(complex,s,298.15K) for these complexes were calculated as (4523.22±2.08), (7208.86±4.28), (3442.21±1.85), (5971.21±3.32), (9007.26±4.24), (5802.35±2.14), (10891.58±3.01), (2147.40±1.28), (4120.83±0.99), (6444.68±3.85)kJ·mol-1 and (615.67±2.27), (1863.16±4.60), (1017.34±2.00), (1742.93±3.61), (2245.70±4.73), (1161.18±2.61), (1829.71±4.20), (1632.82±1.43), (1885.55±1.50), (2770.25±4.21)kJ·mol-1, respectively. 相似文献
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A new Schiff base complex, CoL(ClO4)·3H2O (1) {L represents condensed from equal molar ratio of sali-cylaldehyde and diethylenetriamine} was synthesized and characterized. Further, a new coordination polymer, {[CoL][FeⅡFeⅢ(ox)3·1.5H2O]}∞ (2), was synthesized and characterized, where ox2-=oxalate. The results of the IR and M?ssbauer spectra of 2 revealed that the coordination polymer exists 2-D layer structure in the solid state, and anions layer was formed by [ⅡFeⅢ(ox)3]- unit. The magnetic properties of 2 have been measured and the results indicate that there is magnetic ordering in the low temperature, which may arise from intermolecular ferromagnetic interactions or spin canted effects. 相似文献
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Five novel chiral dinuclear Salen complexes M2L (M = Fe3+Cl-, Mn3+Cl-, Co2+, Ni2+, Cu2+) and Ba2+-crown ether complex H4BaL(ClO4)2 were synthesized. The complexes were synthesized by reaction between ligand 3(H4L) and corresponding metal salts (FeCl3, Mn(OAc)2·4H2O, Co(OAc)2·4H2O, Ni(OAc)2·4H2O, Cu(OAc)2·H2O, Ba(ClO4)2·2H2O). The chiral two discrete Salen ligand 3 was condensed from 3,3′-[Oxybis(2,l-ethanediyloxy)]bis(2-hydroxybenzaldehyde) and (R,R)-1,2-diamino-cyclohexane. The structure of complexes is two discrete Salen unit bridged with crown ether from two sides. We found that ligand 3 had three complex cites. The two N2O2 cavities can found complexes with d-metals (compound 4), while the O10 cavity can found complex with alkali metals and alkaline-earth metals (compound 5). The compounds were characterized by elemental analyses, 1H NMR, Mass-spectra, FT-IR, UV-Vis and CD spectra. The FT-IR, UV-Vis and CD spectra property of complexes were minutely analyzed. 相似文献
5.
M. A. Kiskin G. G. Aleksandrov Zh. V. Dobrokhotova V. M. Novotortsev Yu. G. Shvedenkov I. L. Eremenko 《Russian Chemical Bulletin》2006,55(5):806-820
The thermolysis and reactions of the polymeric high spin MnII and FeII complexes [Mn(μ-OOCBut)2(HOEt)]n (1) and [Fe(μ-OOCBut)2]n (3) with pivalic acid and o-phenylenediamines 1,2-(NH2)2C6H2R2 (R = H or Me) were studied. The synthesis of compound 1 performed with a deficiency of pivalate anions affords the antiferromagnetic chloropivalate polymer { (MeCN)(HOOCBut)(H2O)Mn5Cl(OH)(OOCBut)8·MeCN}n. The reaction of 1 with an excess of pivalic acid produces the antiferromagnetic polymer [Mn4(OOCBut)8(HOOCBut)2]n. The analogous reaction of pivalic acid with polymer 3 gives the mononuclear complex Fe(η 1-OOCBut)2(η1-HOOCBut)4 containing the high spin iron(II) atom as the major product. Study of the reactions of 3 with a deficiency (<1: 1) and an excess (>1: 1) of diamines demonstrated that the polymer {[(η2-(NH2)2C6H4)2Fe(μ-OOCBut)2][Fe2(μ-OOCBut)4] · · 2MeCN}n is generated as the major product in the former case, whereas the mononuclear complexes Fe(η1-OOCBut)2[η1-(NH2)2C6H4]4 and Fe(η1-OOCBut)2[η2-(NH2)2C6H2Me2][η1-(NH2)2C6H2Me2]2 are predominantly obtained in the latter case.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 5, pp. 779–792, May, 2006. 相似文献
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A two-dimensional layered manganese(Ⅱ) pyrophosphate, [NH4]2[Mn3(P2O7)2(H2O)2] (1), has been synthesized hydrothermally. Its structure is determined by single-crystal X-ray diffraction analysis. Its structure is built up by MnO6 octahedra and P2O7 units, with ammonium NH4+ cations residing in the interlayer regions. The manganese pyrophosphate layer consists of infinite chains of cis and trans edge sharing MnO6 octahedra linked by P2O7 units. Magnetic susceptibility measurements show that this compound exhibits ferrimagnetic-like ordering below 3.2 K. Further study shows that there are two possible superexchange pathways via the oxygen anions in Mn2+ ions. Owing to the different bridging modes of O2-, the competition between ferromagnetic interactions and antiferromagnetic interactions in Mn2+ ions results in the ferrimagnetic behavior of 1. 相似文献
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L-苏糖酸锰的制备及标准生成焓 总被引:1,自引:0,他引:1
The pink powder of manganese L-threonate was obtained by extracting with alcohol the concentrated solution derived from the reaction between L-threonic acid solution prepared by double decomposition reaction of calcium L-threonate with oxalic acid and superfluous manganese oxide at 80℃ for certain time. The composition of the new compound was determined by chemical and elemental analyses and its formula fits Mn(C4H7O5)2·H2O, the IR spectra indicated that Mn2+ in the compound coordinates to oxygen atom of the carboxyl group, while the proton of the carboxyl group is dissociated, it was assumed that the coordination number of Mn2+ was 4. The results of TG-DTG showed that the compound have fairish stability, the intermediate and final product of the thermal de-composition of the compound are Mn(C4H7O5)2 and MnO2, respectively. The constant volume combustion energy of the compound, ΔcE, were determined by a precise rotating-bomb calorimeter at 298.15K, it was (-3384.30±1.21)kJ·mol-1, its standard enthalpy of Combustion,ΔcHm?,and standard enthalpy of formation,ΔfHm? , were calculated. They are (-3383.07±1.21)kJ·mol-1 and (-2 571.68±1.63)kJ·mol-1, respectively. 相似文献
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新型铂(Ⅱ)类配合物的合成、表征和抗肿瘤活性 总被引:2,自引:0,他引:2
Seven novel platinum(Ⅱ) complexes[Pt(Ⅱ)(NH3)(H2O)X](Ⅰ~Ⅶ) {X=(COO-)2(oxalato), 2p-CH3O-C6H4-COO-(p-methyoxbenzolato), 2C6H5-COO-(benzolato), 2CH3COO-(acetato), (CH2)(COO-)2(malonato), (CH2)2(COO-)2(succinato), (CH=CH)(COO-)2(maleato)} have been prepared and characterized by elemental analysis, thermal analysis,IR, UV, and 1H NMR spectroscopy. The antitumor activities of these complexes in vitro against EJ、HCT-8, KB, BGC-823, Bel-7402, HL-60, MCF-7 and Hela cell lines have been studied. Complex Ⅰ and Ⅴ show remarkable antitumor activities against EJ cell line, and the inhibitory rate is 45.96% and 54.32% at concentration of 10 μmol·L-1, respectively. The inhibitory rate of the complexes Ⅱ and Ⅲ is greater than 50% against HL-60, BGC-823, KB and EJ cell lines. The inhibitory rate of the complex Ⅵ is 51.89% and 57.96% against BGC-823 and EJ cell lines. The complexes Ⅳ and Ⅶ have no antitumor activities against tested tumor cell lines. The complexes Ⅱ, Ⅲ and Ⅵ can stem the cell cycle of HL-60 on the G2+M. 相似文献
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手性双核Salen配合物的合成与谱学性质 总被引:5,自引:0,他引:5
Six novel chiral dinuclear Salen complexes [Cu2L1·H2O (3a), Cu2L2(3b), Ni2L1·2H2O (4a), Ni2L2(4b), Mn2Cl2L1·H2O (5a), Mn2Cl2L2 (5b)] have been synthesized(L1 and L2 are chiral dimeric Salen ligands with different chain length which were synthesized from (R,R)-diaminocyclohexane, salicylaldehyde, 4,4′-(1,10-decaneoxy)salicylaldehyde, 4,4′-(1,6-hexyloxy)salicylaldehyde). These compounds were charactered by elemental analysis, 1H NMR, FT-IR, UV-Vis and CD spectra. The FT-IR, UV-Vis and CD spectra were discussed and compared with those of monomeric ligand and complex in detail. It was found that the spectra properties of compounds of different chain length were almost alike, and the properties of dimeric and monomeric compound were similar too. Furthermore Cotton effect and Cotton split of CD spectra of these chiral compounds were explained by the exciton interaction theory. It seemed that the direction of Cotton split depend on the configuration of diaminohexane. (R,R)-diaminohexane determine the chirality of Salen compounds as negative, and the positive and negative component of Cotton split lie at higher and lower energy respectively. 相似文献
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11-钨钛合过渡金属杂多酸钾的合成与性质 总被引:3,自引:0,他引:3
11-系列不饱和杂多阴离子可作为配体与过渡金属或希土离子生成混合型杂多阴离子。由于这种无机高分子配合物对某些有机合成反应具有催化活性及抗病毒性能,新型化合物的合成仍吸引着人们的关注。11-钨钛杂多阴离子除与希土离子生成K_(13)[Ln(TiW_(11)O_(39))_2]·xH_2O型化合物外,也可与过渡金属离子生成混合型杂多阴离子。本文报道了K_n[TiW_(11)M(H_2O)O_(39)]·xH_2O(M=Mn~(2+)、Cu~(2+)、Zn~(2+)、Fe~(3+),Co~(3+)和Cr~(3+))型杂多酸盐的合成与性质。 相似文献
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SUN Ya-qiu FAN Lan-lan GAO Dong-zhao LIAO Dai-zheng . Tianjin Key Laboratory of Structure Performance for Functional Molecule . Tianjin Key Laboratory of Cyto-Genetical Molecular Regulation College of Chemistry Life Science Tianjin Normal University Tianjin P. R. China 《高等学校化学研究》2009,25(3)
The organic-inorganic hybrid complex with formula [(CuL)2Cu3(μ-1,1-N3)4(ClO4)2],complex 1,{CuL,[5,6:14,15-dibenzo-1,4,8,12-tetraazacyclopentadeca-7,13-diene-2,3-dione(2-)]copper(II)},has been synthesized and structurally determined. The crystals of complex 1 crystallize in the triclinic system with space group P1,a=0.92983(12) nm,b=1.09644(14) nm,c=1.27396(16) nm,α=70.782(2)°,β=86.266(2)°,γ=78.284(2)°. In this com-plex,the five copper ions are bridged by macrocyclic oxamide groups and azido. Furthermore,C―H... 相似文献
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Reaction of tetraphosphine complex [Mo(κ4‐P4)(Ph2PCH2CH2PPh2)] (1; P4 = meso‐o‐C6H4‐(PPhCH2CH2PPh2)2) with E‐1,3‐pentadiene in toluene at 60 °C gave the η4‐diene complex [Mo(η4‐E‐1,3‐pentadiene)(κ4‐P4)] (2), which is present as a mixture of two isomers due to the orientation of the Me group in the diene ligand. Treatment of 1 with Z‐1,3‐pentadien also resulted in the formation of 2 as the sole product after heating the reaction mixture at 90 °C. Whereas the reaction of 1 with 1,3‐cyclohexadiene at 60 °C afforded the η4‐diene complex [Mo(η4‐cyclohexadiene)(κ4‐P4)] (6), that with cyclopentadiene led to the C‐H bond scission product [η5‐C5H5)MoH(κ3‐P4)] (7). Detailed structures were determined by X‐ray crystallography for 2, 6,and 7, and fluxional feature of 6 in solution was clarified based on the VT‐NMR studies. 相似文献
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系列同三核铬、锰、铁羧酸配合物的FAB-MS研究 总被引:3,自引:3,他引:0
进行了系列同三核羧酸配合物〔M3O(O2CR)6Py3〕X(M=Cr,Mn,Fe;R=CH3,C2H5,C6H5;X=Cl-,ClO4-;Py为吡啶)的快原子轰击质谱(FAB-MS)研究。获得了包括配位吡啶在内的完整阳离子峰。在研究其断裂规律时,主要观察到4个系列碎片离子:Ⅰ.〔M3O(O2CR)n〕+,n=6~2;Ⅱ.〔M3O(O2CR)nO〕+,n=5~1;Ⅲ.〔M2O(O2CR)n〕+,n=3~1;Ⅳ.〔M2(O2CR)n〕+,n=4~2。通过对该系列配合物质谱断裂过程的比较和分析,获得了配合物稳定性随金属离子及配体的变化如下:金属离子,Cr>Mn>Fe;桥配基,-CH3CO2>-C2H5CO2>-C6H5CO2;端配基,Py>H2O。本研究及先前的工作〔1,8〕还为某些三核铬,铁羧酸配合物在以乙炔加水或加氢为探针反应中存在活性物种:〔Cr3O(O2CR)3~4〕,〔Fe3O(O2CR)3〕和〔Fe3O-(O2CR)O〕~〔Fe3O4〕提供了佐证 相似文献
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用凝胶法生长出规则八面体形无色配合物单晶体,在ENRAF-NONLUSCAD4四园衍射仪上,用2461个独立可观察衍射数据,用Patterson函数法和多次△F合成,得到配合物的全部结构参数。结构偏差因子R=0.072,R_w=0.081晶体属单斜晶系,空间群为P_(21)/n。晶胞参数:a=9.032(2),b=14.243(4),C=35.092(6),β=105.5°,Z=4。晶体密度的计算值:D_(eal)=1.546g/cm~3。经元素分析和X射线结构分析,确定晶体的化学式为[(NH_4)(18C6)]_2[Ag_2相似文献
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含N-苯甲酰皮考林酰肼的钒酰、镍及锰配合物的合成和晶体结构 总被引:2,自引:0,他引:2
合成了3个含N-苯甲酰皮考林酰肼(简写为HL)的钒、镍和锰配合物[VO_2L](1,C_(13)H_(10)N_3O_4V,M_r=323.18),[NiL_2]·0.5CH_3OH(2,C_(26.5)H_(22)N_6NiO_(4.5),Mr=555.21)和[MnL_2]·0.5CH_3OH(3,C_(26.5)H_(22)MnN_6O_(4.5),Mr=551.44)。配合物1属三斜晶系,空间群为P1,a=0.71241(3)nm,b=0.89625(6)nm,c=1.11706(6)nm,α=94.715(2)°,β=102.053(2)°,γ=112.375(3)°,V=0.63461(7)nm~3,Z=2,F(000)=328,μ(MoKα)=0.802mm~(-1),R=0.0290,wR=0.0816;配合物2属单斜晶系,空间群为C2/c,a=2.5875(1)nm,b=1.4868(1)nm,c=1.8353(1)nm,β=134.470(4)°,V=5.2081(5)nm~3,Z=8,F(000)=2368,μ(MoKα)=0.795mm~(-1),R=0.0459,wR=0.1330;配合物3属单斜晶系,空间群为C2/c,a=2.60113(3)nm,b=1.45231(4)nm,c=1.92903(1)nm,β=132.824(1)°,V=5.3448(2)nm~3,Z=8,F(000)=2344,μ(MoKα)=0.543mm~(-1),R=0.0457,wR=0.1325。在配合物1中,钒(V)原子具有畸变的N_2O_3四角锥配位构型,晶体内每两个分子通过分子间氢键作用形成缔合分子对。在配合物2和配合物3中,镍(Ⅱ)原子和锰(Ⅱ)原子具有扭曲的N_4O_2八面体配位构型,晶体通过分子间氢键作用形成一维的无限链状结构。红外光谱表明,配体在形成配合物后,ν(C=O)和ν(C=N)红移。电 相似文献
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Güneş Süheyla Kürkçüoğlu Dr. Okan Zafer Yeşilel Ilkan Kavlak Orhan Büyükgüngör 《无机化学与普通化学杂志》2009,635(1):175-178
The heteronuclear polymeric complex, [Zn(teta)Ni(μ‐CN)2(CN)2]n (teta: triethylenetetramine), was synthesized and characterized by elementel analysis, FT‐IR spectroscopy, thermal analysis and single crystal X–ray diffraction techniques. The complex crystallizes in the monoclinic system, space group P21/c and in which the ZnII ion exhibits a distorted octahedral coordination by one tetradentate teta ligand and two bridging cyano groups as a trans position, whereas the NiII ion has square planer coordination and is coordinated by four cyano ligands. The decomposition reaction takes places in the temperature range 30–600 °C in the static air atmosphere. 相似文献
18.
A new pyrazole ligand, 3-tert-butyl-4-cyano pyrazole (Hpzt-Bu,4CN), has been synthesized. The crystal structure of this pyrazole, along with the syntheses and crystal structures of Co, Cu, and Mn complexes of this ligand, are reported. The uncoordinated pyrazole shows the formation of a cyclic hydrogen-bound dimer. The Co complex is octahedral, with four coordinated pyrazoles and two coordinated waters. The Mn complex is octahedral, with two coordinated pyrazoles, two coordinated triflates and two coordinated waters. A hydrogen bonding network involving the triflates and waters results in a linear double chain of Mn complexes. The Cu complex has two coordinated pyrazoles and two coordinated chlorides in a slightly distorted square-planar geometry, with a long bond to the cyano N atom of a neighboring Cu complex, forming a pseudodimer. 相似文献
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A. Mishra Ruchita Awate Namrata Soni Niyati Mishra Ritu Soni P. Sharma 《Phosphorus, sulfur, and silicon and the related elements》2013,188(10):2624-2635
The article deals with a study to synthesize transition metal complexes of copper, cobalt, and iron with the ligand 6-methyl-5-arylhydrazono-2-thio-4-oxo-pyrimidine (MATOPyr). The synthesized ligand and all metal complexes were characterized by elemental analysis, XRD, SEM, FTIR, 1HNMR, UV-VIS, magnetic spectral studies, and Mössbauer measurements. The morphology of the ligand along with the complexes of all three metals was also deduced. 相似文献