含膦配体二铁二硫五羰基配合物的合成、表征及电催化产氢性能

本文报道了4个含膦配体二铁二硫五羰基配合物的合成和结构表征。起始配合物[Fe₂(CO)₆(μ-SCH₂CH (CH₂OOCH) S)](1)与三苯基膦、三环己基膦、三(2-甲氧基苯基)膦或三(4-三氟甲基苯基)膦和脱羰试剂Me₃NO·2H₂O反应,以59%~88%的产率制备了目标产物[Fe₂(CO)₅(L)(μ-SCH₂CH (CH₂OOCH) S)](L=PPh₃(2)、PCy₃(3)、P (2-C₆H₄OCH₃)₃(4)、P (4-C₆H₄CF₃)₃(5))。配合物2~5以元素分析、红外光谱、核磁共振以及单晶X射线衍射进行了表征。电化学性质研究表明配合物1~5均可以实现电化学催化质子还原产生氢气的功能,其中配合物1的催化产氢效率明显优于其它配合物。     

高价银配合物的制备、表征及抗菌性能研究

以亚乙基双胍、吡啶及吡啶衍生物为配体合成了[AgEn(BigH)_2]_2(SO_4)_3·7H_2O(3)、[Ag(Py)_2(N_2)_2](OH)_2(4)和[Ag(2-Apy)_3(OH)](HSO_4)·H_2O(5)三种较稳定的高价银配合物。产物结构经红外光谱、元素分析和XPS进行表征。通过最小抑菌浓度(MIC)和生长抑制曲线来检测配合物的抗菌能力,并对配合物进行光稳定测试。抗菌实验结果显示,所有的配合物在0.5μg/mL浓度下就开始对测试菌产生抑制作用,对大肠杆菌的MIC分别为10、5和5μg/mL,对金黄色葡萄球菌的MIC为40、20和20μg/mL。配合物对大肠杆菌的抗菌活性高于对金黄色葡萄球菌。     

钕与乌洛托品配合物的合成、表征及抗菌活性研究

报道了配合物NdI3·C6 H1 2 N4 ·HI·13H2 O的新的合成方法 ,通过元素分析、X射线粉末衍射、红外光谱、核磁共振谱、质谱、差热 热重分析 ,确定了配合物的组成和结构 ,9个水分子与Nd3+ 形成配合阳离子 [Nd(H2 O) 9] 3+ ,C6 H1 2 N4 分子以N原子与Nd3+ 直接作用 ,而 3个I- ,HI以及剩余 4个水分子与配合阳离子 [Nd(H2 O) 9] 3+ 以静电引力或氢键的形式作用。首次测定了配体碘化钕、氢碘酸乌洛托品和配合物对枯草芽孢杆菌、大肠杆菌和葡萄球菌的抗菌活性。所有试样对枯草芽孢杆菌的杀死作用较对葡萄球菌、大肠杆菌的杀死作用显著 ,且高浓度溶液(0 .0 5mol·L - 1 )比低浓度溶液 (0 .0 1mol·L - 1 )的抗菌效果好。浓度为 0 .0 5mol·L - 1时 ,由于协同性 ,配合物NdI3·C6 H1 2 N4 ·HI·13H2 O对枯草芽孢杆菌的杀死作用大于相应的配体     

二氨基硫脲双核席夫碱和其配合物的合成与抗菌活性

二氨基硫脲;席夫碱;金属配合物;合成;抗菌活性     

依诺沙星与铁配合物的合成、表征及其生物活性

由水热法合成了依诺沙星铁配合物,用固体培养基平板药敏试验方法测定了配合物的体外抗菌活性。结果表明,合成的依诺沙星铁配合物对金黄色葡萄球菌、肺炎链球菌、绿脓杆菌、白色念珠菌都具有抗菌活性,但只有对金黄色葡萄球菌和绿脓杆菌的抗菌活性强于配体本身。     

纳米稀土谷氨酸咪唑三元配合物的合成、表征及抗菌活性研究

合成了6种新型纳米稀土三元配合物。通过元素分析、摩尔电导、红外光谱、紫外光谱、氢谱、碳谱、热重-差热等表征,确定了该类配合物的化学组成为：RE（Glu）3ImCl3·3H2O（RE=La^3＋,Nd^3＋,Er^3＋,Eu^3＋,Y^3＋,Gd^3＋;Glu=L-谷氨酸;Im=咪唑）,TEM电镜测试表明其有一定规则形貌,粒径在30-60 nm。通过抗菌实验对其抑菌效果进行研究,结果表明：6种纳米稀土三元配合物对大肠杆菌、金黄色葡萄球菌和白色念珠菌均有较强的抑制作用（最小抑菌浓度MIC分别约为140,100,250μg·ml^-1）,属于广谱抗菌剂;抗菌效果明显优于非纳米稀土三元配合物、稀土氯化物、L-谷氨酸或咪唑。     

二核双席夫碱铜(Ⅱ)配合物的合成、晶体结构及抗菌活性研究

合成了一对结构类似的双核铜配合物,[CuL¹]₂（1）和[CuL²]₂（2）,其中L¹是双席夫碱配体N,N’-二（5-氟水杨基）-1,3-丙二胺（H₂L¹）的二价阴离子,L²是N,N’-二（5-氟水杨基）-1,2-乙二胺（H₂L²）的二价阴离子,通过元素分析、红外光谱以及单晶X-射线衍射表征了它们的结构。配合物1以单斜晶系P2₁/c空间群结晶,其晶体学参数a=1.3488（1）nm,b=0.6814（1）nm,c=1.7087（1）nm,β=108.903（3）°,V=1.4857（2）nm³,Z=4,R₁=0.0480,wR₂=0.1141,Goof=1.115。配合物2以单斜晶系C2/c空间群结晶,其晶体学参数a=2.7568（2）nm,b=0.7036（1）nm,c=1.4547（1）nm,β=94.758（2）°,V=2.8118（5）nm³,Z=4,R₁=0.0472,wR₂=0.1139,Goof=1.094。X-射线分析表明2个化合物都是中心对称的双核配合物,其中Cu原子都是四方椎配位构型。通过MTT法研究了这2个配合物的抗细菌（枯草芽孢杆菌,金黄色葡萄球菌,大肠杆菌和荧光假单胞菌）和抗真菌（白假丝酵母菌和黑曲霉菌）活性。     

基于双苯并咪唑及二羧酸配体配合物的合成、结构及抗菌活性

利用双苯并咪唑基配体4,4′-二(苯并咪唑-1-甲基)联苯(bbmb)与V形二羧酸配体4,4′-二羧苯基醚(H2dcpe)合成了配合物{[Ni(bbmb)(dcpe)(H_2O)]·2H_2O}_n(1)和{[Mn_2(bbmb)(dcpe)_2(H_2O)]·1.5H_2O}_n(2)。通过红外、元素分析、X射线单晶衍射、热重分析等检测手段对配合物结构进行了表征。配合物1是具有sql拓扑构型的二维层状化合物。配合物2呈现出含有四核锰构型的二维层状结构。体外抗菌实验证明2个配合物都表现出良好的抗菌活性。     

金刚烷胺邻香兰素Schiff碱稀土配合物的合成、表征及抗菌活性研究

The new solid complexes [LnL₂(NO₃)₂]NO₃ (L=C₁₈H₂₃NO₂, N-2-hydroxy-3-methoxy-benzaldehyde-1-aminoadamanantane, Ln=La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y) of rare earth nitrates with Schiff base derived from o-vanillin and adamantaneamine have been synthesized in non-aqueous system and characterized by elemental analysis, molar conductance, infrared spectra, ¹H NMR spectra, thermal analysis. The coordination modes of the bonding in these complexes were discussed and the possible structure were proposed. Every central Ln(Ⅲ) ion in the complexes coordinates with both two Schiff base ligands via four oxygen atoms of the phenol hydroxy groups and methoxy groups and two nitrates via their four oxygen atoms. Their coordination numbers are eight. In addition, the antibacterial activity of the Schiff base ligand and the complexes were studied.     

间羟基苯甲酸邻菲啰啉稀土三元配合物的合成、表征和抗菌活性研究

本文用间羟基苯甲酸、邻菲口罗啉与碳酸稀土合成了四种新的固体三元配合物,通过元素分析、摩尔电导、红外光谱、Ｘ射线粉末衍射、差热－热重分析等手段,确定配合物的组成为：Ｌｎ（ｐｈｅｎ）Ｌ３,（Ｌｎ＝Ｌａ,Ｇｄ,Ｄｙ,Ｙ;Ｌ＝ｍ－ＨＯ－Ｃ６Ｈ４ＣＯＯ－）,并对配合物的某些性质进行了研究。     

Synthesis,Characterization, and Biological Evaluation of Some Novel Pyrazolo[5,1-b]thiazole Derivatives as Potential Antimicrobial and Anticancer Agents

The pharmacological activities of thiazole and pyrazole moieties as antimicrobial and anticancer agents have been thoroughly described in many literature reviews. In this study, a convenient synthesis of novel pyrazolo[5,1-b]thiazole-based heterocycles was carried out. The synthesized compounds were characterized by IR, ¹H and ¹³C NMR spectroscopy and mass spectrometry. Some selected examples were screened and evaluated for their antimicrobial and anticancer activities and showed promising results. These products could serve as leading compounds in the future design of new drug molecules.     

含苯并咪唑和异噁唑结构席夫碱的合成及其抑菌活性

根据活性亚结构拼接原理,以取代苯甲醛、盐酸羟胺、N-氯代丁二酰亚胺和2-苯并咪唑基乙腈等为原料,经肟化、氯代、环化及缩合反应,合成了一系列新型的含苯并咪唑和异噁唑结构的席夫碱化合物(5a~5h),收率60%~75%,其结构经~1H NMR,~(13)C NMR,IR和HR-MS表征。采用菌丝生长速率法测试了化合物对番茄灰霉菌和生菜菌核菌的抑菌活性。结果表明:在用药量为100μg·m ~(-1)时,苯环上含有氟原子或甲氧基的席夫碱(5c,5d和5e)对生菜菌核菌显示出较好的活性,抑制率为71.3%~76.1%。     

A gadolinium(III) complex: synthesis,structure, photophysical profile and its role in the degradation of nitroaromatics

The synthesis and structural characterization of a gadolinium(III) complex with phenanthroline and thiocyanate ligands have been accomplished. The X-ray crystal structure reveals that Gd(III) in a slightly distorted square anti-prism coordinated with four thiocyanate ions and two phenanthroline molecules; one phenanthroline is protonated which compensates the charge of Gd(III) center. The crystal structure shows chemically significant non-covalent interactions like hydrogen bonding involving the thiocyanate ligand and π–π interactions between uncoordinated phenanthrolinium and coordinated phen. Investigation on the intermolecular interactions and crystal packing via Hirshfeld surface analysis reveals that close contacts are mainly associated with weak interactions. The fingerprint plots demonstrate that these weak interactions are important for crystal packing. The Gd(III) complex shows photophysical activity. The compound is capable of degrading toxic pollutants like nitroaromatics and may have far reaching consequences for cleaning these toxic pollutants from industrial effluents.     

A series of multinuclear homo- and heterometallic complexes with bridging tellurolato ligands derived from [CpIr(CO)(TeTol)2] (Cp = η-C5Me5, Tol = p-tolyl)

Reactions of [Cp^∗Ir(CO)(TeTol)₂] (1; Tol = p-tolyl) with certain organometallic Pd(II), Pt(II), Ir(III), Rh(III), and Ru(II) species afforded IrPd, IrPt, IrPt₂, Ir₂, IrRh, IrRu₃, and IrRu complexes having tellurolato-bridged dinuclear or trinuclear cores. This finding demonstrates that 1 is a versatile precursor to synthesize a variety of multinuclear homo- and heterometallic μ-tellurolato complexes, whose chemistry is still less advanced as compared with that of μ-thiolato complexes.     

Synthesis, structure and luminescence property of the ternary and quaternary europium complexes with furoic acid

A ternany europium complex with furoic acid (α-FURA) and 1,10-phenanthroline(phen), [Eu(α-FURA)₃phen]H₂O(I) and a quaternary europium furoate complex with 1,10-phenanthroline and nitrate, Eu(α-FURA)₂NO₃phen(II) were synthesized and characterized by X-ray diffraction. The two europium ions in each of the complexes (I) and (II) are held together by four carboxylato groups with the two modes, namely bidentate bridging and tridentate bridging, and each europium ion is further bonded to two nitrogen atoms from 1,10-phenanthroline and one chelated bidentate furoate group for the complex (I) and one chelated nitrato group for the complex (II), making a coordination number of 9. Luminescence spectra observed at 77 K show that the europium ion site in the crystals of the complexes (I) and (II) has low symmetry and lifetimes of the solid complexes (I) and (II) are 1.13 and 1.20 ms, respectively.     

Formation and structural characterization of mercury complexes from Te(R)CH2SiMe3 (R = Ph, CH2SiMe3) and HgCl2

The reaction of HgCl₂ and Te(R)CH₂SiMe₃ [R = CH₂SiMe₃ (1), Ph (2)] in ethanol yielded a mononuclear complex [HgCl₂{Te(R)CH₂SiMe₃}₂] (R = Ph, 3a; R = CH₂SiMe₃, 3b). The recrystallization of 3a or 3b from CH₂Cl₂ produced a dinuclear complex [Hg₂Cl₂(μ-Cl)₂{Te(R)CH₂SiMe₃}₂] (R = Ph, 4a; R = CH₂SiMe₃, 4b). When 3a was dissolved in CH₂Cl₂, the solvent quickly removed, and the solid recrystallized from EtOH, a stable ionic [HgCl{Te(Ph)CH₂SiMe₃}₃]Cl·2EtOH (5a·2EtOH) was obtained. Crystals of [HgCl₂{Te(CH₂SiMe)₂}]·2HgCl₂·CH₂Cl₂ (6b·2HgCl₂·CH₂Cl₂) were obtained from the CH₂Cl₂ solution of 3b upon prolonged standing. The complex formation was monitored by ¹²⁵Te-, and ¹⁹⁹Hg NMR spectroscopy, and the crystal structures of the complexes were determined by single crystal X-ray crystallography.