二维网状银(I)配合物的合成及结构表征

用1,10-二(邻氨基苯氧基)癸烷和AgNO3,进行配位反应得到了配合物[Ag2(L)(NO3)2]η(1).并用元素分析,FT-IR和X-射线单晶衍射进行了表征.结果表明,配合物属于单斜晶系,P21/c空间群,晶胞参数为:a=0.5649(l)nm,b=3.3426(7)nm,c=0.9375 (2) nm,β=99...     

Synthesis,crystal structure and studies on the interaction with albumin of a new silver(I) complex based on 2‐(4‐nitrobenzenesulfonamido)benzoic acid

In the present work, the two‐dimensional (2D) polymer poly[[μ₄‐2‐(4‐nitrobenzenesulfonamido)benzoato‐κ⁴O¹:O¹:O^1′:N⁶]silver(I)] (AgL), [Ag(C₁₃H₉N₂O₆S)]_n, was obtained from 2‐(4‐nitrobenzenesulfonamido)benzoic acid (HL), C₁₃H₁₀N₂O₆S. FT–IR, ¹H and ¹³C{¹H} NMR spectroscopic analyses were used to characterize both compounds. The crystal structures of HL and AgL were determined by single‐crystal X‐ray diffraction. In the structure of HL, O—H…O hydrogen bonds between neighbouring molecules result in the formation of dimers, while the silver(I) complex shows polymerization associated with the O atoms of three distinct deprotonated ligands (L^?). Thus, the structure of the Ag complex can be considered as a coordination polymer consisting of a one‐dimensional linear chain, constructed by carboxylate bridging groups, running parallel to the b axis. Neighbouring polymeric chains are further bridged by Ag—C monohapto contacts, resulting in a 2D framework. Fingerprint analysis of the Hirshfeld surfaces show that O…H/H…O hydrogen bonds are responsible for the most significant contacts in the crystal packing of HL and AgL, followed by the H…H and O…C/C…O interactions. The Ag…Ag, Ag…O/O…Ag and Ag…C/C…Ag interactions in the Hirshfeld surface represent 12.1% of the total interactions in the crystal packing. Studies of the interactions of the compounds with human serum albumin (HSA) indicated that both HL and AgL interact with HSA.     

Synthesis and Crystal Structure of a Decanuclear Silver（I）-thiolate Compound Ag10S[S2P（OEt）2]8

A new decanuclear silver(I) compound Ag₁₀(μ₈‐S)(dtp)₈ [dtp=S₂P(OEt)₂] was isolated from a reaction mixture containing W₂S₄(dtp)₂ and AgN0₃, and its solid‐state molecular structure was determinated by X‐ray crystallography. The crystallographic study revealed that the compound contains a distorted mono‐capped quasi‐prism [Ag_io] with an octat‐bridging S atom at the center of the prism. The compound (C₃₂H₈₀Ag₁₀O₁₆P₈S₁₇, M_r=2592.46) crystallizes in the monoclinic P2₁/n space group, with a = 1.5111(5) nm, b=2.3656(8) nm, c=2.284(1) nm, β= 96.88(3)°, V=8.107(5) nm³, Z=4 and D,=2.12 g · cm^?3. The solution using direct method and full‐matrix least‐squares refinement led to R=0.066, Rw=0.078 for 3928 reflections with I3σ(I).     

Synthesis,crystal structure and ferromagnetic interactions of a silver(I) complex with imizadolyl-substituted nitroxide radicals

A silver(I) complex with nitronyl nitroxide, [Ag₂(NIT-R)₄(NO₃)₂]?·?CH₃OH [NIT-R?=?2-(5-methylimidazol-4-yl)-4,4,5,5-tetramethyl-2-imidazoline-1-oxyl-3-oxide], has been prepared and characterized by magnetic and single-crystal X-ray diffraction studies. In the complex, the silver(I) ion is coordinated with two monodentate nitronyl nitroxide radicals by the nitrogen of the imizadole ring. The silver(I) ion is two-coordinate and forms a dimer through Ag?···?Ag weak metal bonding interactions. The magnetic properties for the title complex have been investigated in the temperature range 2?～?300?K showing ferromagnetic interactions between the coordinated nitronyl nitroxides (J?=?3.64?cm^?1) and intermolecular antiferromagnetic interactions.     

Synthesis,crystal structures,and DNA-binding studies of two silver(I) complexes with 1,3-bis(1-ethylbenzimidazol-2-yl)-2-thiapropane

Two new silver(I) complexes, [Ag(bebt)(methacrylate)] (1) and [Ag₂(bebt)₂](pic)₂ (2) (bebt = 1,3-bis(1-ethylbenzimidazol-2-yl)-2-thiapropane, pic = picrate), have been synthesized and characterized by physico-chemical and spectroscopic methods. Single-crystal X-ray diffraction revealed that the structure of 1 was four-coordinate in a distorted tetrahedral geometry, while in 2, it may be described as a 2 + 1 coordinated silver(I) compound with a nearly linear N–Ag–N backbone and a weak Ag–S interaction. Two ligands are arranged in a face-to-face syn conformation to coordinate to two Ag(I) ions from opposite directions in 2, generating a U-type double layer structure around the metal ions. Experimental studies of the DNA-binding properties indicated that free bebt and both complexes bind to DNA via intercalation, and the order of the binding affinity is 2 > 1 > bebt.     

N-乙酰皮考林酰肼合铜的合成和晶体结构

N-乙酰皮考林酰肼(HL)与一水乙酸铜在甲醇溶剂中形成配合物Cu(Ⅱ)L2·0 5H2O(C16H17CuN6O4 5,Mr=428 90),晶体属单斜晶系,空间群为C2/c,a=2 8355(2)nm,b=0.90009(4)nm,c=1.49351(9)nm,β=107.974(2)°,V=3 6258(3)nm3,Z=8,F(000)=1760,μ(MoKα)=1 24mm-1,R=0 0338,wR=0 0955.Cu(Ⅱ)原子的配位介于六配位的严重扭曲的八面体和四配位的不规则多面体之间,其中Cu与O(羰基)距离为0 2653(2)和0 2591(7)nm.量子化学从头算方法计算结果表明,铜与羰基氧之间存在弱配键,晶体通过分子间氢键作用形成一维的无限链状结构     

Synthesis and Structural Characterization of a Silver(I) Pyrazolato Coordination Polymer

Coinage metal(I)···metal(I) interactions are widely of interest in fields such as supramolecular assembly and unique luminescent properties, etc. Only two types of polynuclear silver(I) pyrazolato complexes have been reported, however, and no detailed spectroscopic characterizations have been reported. An unexpected synthetic method yielded a polynuclear silver(I) complex [Ag(μ-L1Clpz)]_n (L1Clpz⁻ = 4-chloride-3,5-diisopropyl-1-pyrazolate anion) by the reaction of {[Ag(μ-L1Clpz)]₃}₂ with (ⁿBu₄N)[Ag(CN)₂]. The obtained structure was compared with the known hexanuclear silver(I) complex {[Ag(μ-L1Clpz)]₃}₂. The Ag···Ag distances in [Ag(μ-L1Clpz)]_n are slightly shorter than twice Bondi’s van der Waals radius, indicating some Ag···Ag argentophilic interactions. Two Ag–N distances in [Ag(μ-L1Clpz)]_n were found: 2.0760(13) and 2.0716(13) Å, and their N–Ag–N bond angles of 180.00(7)° and 179.83(5)° indicate that each silver(I) ion is coordinated by two pyrazolyl nitrogen atoms with an almost linear coordination. Every five pyrazoles point in the same direction to form a 1-D zig-zag structure. Some spectroscopic properties of [Ag(μ-L1Clpz)]_n in the solid-state are different from those of {[Ag(μ-L1Clpz)]₃}₂ (especially in the absorption and emission spectra), presumably attributable to this zig-zag structure having longer but differently arranged intramolecular Ag···Ag interactions of 3.39171(17) Å. This result clearly demonstrates the different physicochemical properties in the solid-state between 1-D coordination polymer and metalacyclic trinuclear (hexanuclear) or tetranuclear silver(I) pyrazolate complexes.     

大环镍配合物[Ni(teta)(NCS)2]的合成与结构研究

大环配体由于其独特的配位性能已吸引了广泛的注意,用大环化合物模拟生物功能,是当今大环化学发展的方向之一[1]。大环四胺配体5,7,7,12,14,14-六甲基-1,4,8,11-四氮杂环十四烷(简记为teta)的钴配合物已被用来作为研究维生素B12的模型分子[2],一些teta的配合物也已被陆续报道[3     

双水杨醛缩乙二胺氧钒配合物的合成和晶体结构

钒的化合物具有类胰岛素样活性,是新一代潜在的抗糖尿病药物。本文合成了水杨醛缩乙二胺氧钒席夫碱配合物[VO(SALEN)],并通过红外光谱、元素分析、X-射线单晶衍射和热重分析等手段进行了表征、结构测定及热分解研究。结果表明,它属于三斜晶系,与以前所报道的该配合物的单斜晶系结构不同。     

一维链状配位聚合物[(C6H5)3SnO]n的合成和结构研究

在甲醇溶剂中利用(C6H5)3SnCl和三乙胺水解得到一种新型有机锡聚合物[(C6H5)3SnO]n。用元素分析、IR及X-射线衍射法表征配合物。晶体结构用直接法解出,并用全矩阵最小二乘法进行修正。该晶体属于正交晶系,空间群为P212121,晶胞参数为:a=0.8339(15)nm,b=1.040(2)nm,c=1.8067(4)nm,Z=4,V=1.5668(5)nm3,Mr=365.99,Dc=1.552g/cm3,mμ=1.623mm-1,F(000)=724,S=1.065,R=0.0278,wR=0.0511配合物的中心锡原子呈五配位畸变三角双锥构型。     

Preparation and X-Ray crystal structure of a Novel Nickel(II) complex with dithiocarbimate

The reaction of potassiumN-(methanesulfonyl)-dithiocarbimate, K₂[S₂C=NSO₂CH₃], with nickel(II) chloride hexahydrate, NiCl₂·6H₂O, formed the complex anion bis(N-(methanesulfonyl)-dithiocarbimate)nickelate(II), [Ni(S₂C=NSO₂CH₃)₂]^2}-, which was isolated as its tetra-n-butylammonium salt. The UV-Vis data obtained were consistent with the formation of a nickelsulfur diamagnetic planar complex. The¹H NMR and the¹³C NMR spectra showed the expected signals for then-Bu₄N⁺ cation and the dithiocarbimate moiety. The single-crystal structure analysis showed that tetra-n-butylammonium bis(N-(methanesulfonyl)-dithiocarbimate)nickelate(II), (Bu₄N)₂[Ni(S₂C=NSO₂CH₃)₂], crystallizes in the monoclinic space groupP2_l/c witha=9.3197(5),b=15.0795(8),c=17.5286(9) å,=91.262(3),V=2462.8(3) å³, andZ=2. The nickel atom is coordinated to four sulfur atoms.     

Synthesis,crystal structure,and Helicobacter pylori urease inhibition of a dicyanoamide bridged Cu(I/II) complex

A dicyanoamide-bridged polymeric copper(I/II) complex, [Cu^II(sal)(bipy)Cu^I(dca)₂]_n, was prepared by reaction of 5-methylchlorosalicylaldehyde (Hsal), 2,2′-bipyridine (bipy), sodium dicyanoamide (Nadca), and copper perchlorate in methanol. The complex was characterized by elemental analyses, infrared and electronic spectroscopy, and single-crystal X-ray determination. Cu^II has a square pyramidal coordination, and Cu^I has triangular coordination. The complex showed high urease inhibitory activity with IC₅₀ value of 0.16 ± 0.23 μM.     

双大环配体与铜双核配合物的合成、晶体结构和磁偶合性质

由新型双功能配体2,6-双(1,5,9-三氮杂环十二烷)-2,6-二甲基苯甲酸(L)与溴化铜在甲醇中反应得到新型铜双核配合物[Cu~2LBr~2]Br.3H~2O单晶。晶体结构分析表明:2个Cu(II)中心离子由配体L中的羧酸基团桥联;2个等价的Cu(II)中心离子均由双功能配体L的1,5,9-三氮杂环十二烷([12aneN~3)的3个氮原子和羧酸的1个氧原子及1个Br^-离子配位,并都处在三角双锥的配位环境中;分子内Cu...Cu双核间的距离为0.5884(6)nm。变温磁化率数据表明:在同一分子中的2个铜核之间存在反铁磁偶合作用(J=-22.49cm^-^1)。     

二苯并18－冠－6铵与硫氰酸银配合物的晶体结构

标题化合物［（ＮＨ_４）（ＤＢ１８Ｃ６）］_２［Ａｇ（ＳＣＮ）_２］_２其晶体属三斜晶系，空间群为Ｐ１。晶胞参数：ａ＝１４．００３（２），ｂ＝１４．４６１（３），ｃ＝１４．８８７（２），ａ＝６６．５１（２），β＝６６．７０（１），γ＝７６．０９（２）°，Ｖ＝２５２７．１３　３，Ｍ_ｒ＝１２０５．０，Ｚ＝２，Ｄ_ｘ＝１．５８ｇ／ｃｍ~３，μ＝９．８８ｃｍ~（－１）。偏差因子Ｒ_ｗ＝０．０８１，独立可观测点数［Ｉ＞３σ（Ｉ）］为３３５１个，在配合物分子中，二苯并１８－冠－６与ＮＨ４~＋形成配阳离子，Ａｇ~＋与硫氰酸根形成配阴离子，二者以静电力形成配合物。银原子被两个ＳＣＮ~－的Ｓ原子桥联和硫氰酸根上的硫，氮杂配，使整个分子形成一条高分子长链。     

二苯并18－冠－6铵与硫氰酸银配合物的晶体结构

标题化合物［（ＮＨ_４）（ＤＢ１８Ｃ６）］_２［Ａｇ（ＳＣＮ）_２］_２其晶体属三斜晶系，空间群为Ｐ１。晶胞参数：ａ＝１４．００３（２），ｂ＝１４．４６１（３），ｃ＝１４．８８７（２），ａ＝６６．５１（２），β＝６６．７０（１），γ＝７６．０９（２）°，Ｖ＝２５２７．１３　３，Ｍ_ｒ＝１２０５．０，Ｚ＝２，Ｄ_ｘ＝１．５８ｇ／ｃｍ~３，μ＝９．８８ｃｍ~（－１）。偏差因子Ｒ_ｗ＝０．０８１，独立可观测点数［Ｉ＞３σ（Ｉ）］为３３５１个，在配合物分子中，二苯并１８－冠－６与ＮＨ４~＋形成配阳离子，Ａｇ~＋与硫氰酸根形成配阴离子，二者以静电力形成配合物。银原子被两个ＳＣＮ~－的Ｓ原子桥联和硫氰酸根上的硫，氮杂配，使整个分子形成一条高分子长链。     

新型含2-噁唑啉基三角架配体-银(I)一维配位聚合物的合成与结构

通过含2-噁唑啉基三角架配体1,3,5-三(2-噁唑啉基)苯(L)与三氟醋酸银反应合成了配合物[Ag₄(L)₂(CH₃CN)₂(CF₃CO₂)₄]_n (1), 并利用元素分析、电喷雾质谱、X射线单晶衍射等方法对其进行了表征. 晶体结构解析结果显示配合物1属三斜晶系, 空间群P-1, a＝0.83731(6) nm, b＝1.22828(9) nm, c＝1.33997(10) nm, α＝102.9760(10)°, β＝107.3050(10)°, γ＝93.8600(10)°, Z＝1, R＝0.0365, wR₂＝0.0929. 该配合物是由[Ag₄(L)₂(CF₃CO₂)₂]^2＋笼状结构单元通过另外两个三氟醋酸根双桥连形成的一维链状结构. 相邻的链间通过C—H…O氢键进一步扩展为二维网状结构. 电喷雾质谱研究结果显示在实验条件下, 溶液中配合物1是以聚合状态存在的.     

镍配合物[Ni(phen)_2(tovsb)]·4H_2O的合成与晶体结构(英文)

以牛磺酸、邻香草醛为原料,合成了配体牛磺酸缩邻香草醛席夫碱,再用所得配体与醋酸镍、邻菲啰啉作用,合成了配合物 [Ni(phen)2(tovsb)]·4H2O(phen=邻菲啰啉,tovsb=牛磺酸缩邻香草醛席夫碱),其结构通过IR,元素分析和X-射线单晶衍射法测定.标题配合物属三斜晶系,Pī空间群;a=1.04661(16),b=1.2303(2),c=1.4063(2) nm,α=83.714(4),β=88.539(3),γ=69.398(3)°,V=1.6947(5)nm3,Z=2.结构分析表明,两个邻菲啰啉共提供四个配位原子,牛磺酸缩邻香草醛席夫碱提供两个配位原子,中心Ni(II)离子是一个六配位的畸变八面体结构.该聚合物中含有四个结晶水分子,水分子通过氢键作用,形成了一个六聚水簇,配合物分子通过氢键和π-π堆积作用形成三维超分子结构.     

Synthesis and crystal structure of a Ni(II)complex with 1,7-diaminoethyl-4,10-dimethyl-1,4,7,10-tetraazacyclododecane

The crystal structure of a. Ni(II) complex with 1,7-diaminoethyl-4,10-dimethyl-1,4,7,10-tetraazacyclododecane has been determined by X-ray diffraction method. Crystal data for NiC14H38Br2N6O: monoclinic, space group P21/n, a=0.8848(3), b=1.4656(3), c=1.5828(3) nm, β=90.47(3)°, V=2.0525 nm3, Z=4. The two pendant primary amino groups are located in cis positions in the complex, "their nitrogen atoms and the four nitrogen donors of the foled tetraaza-macrocycle coordinate Ni(II) ion, forming a distorted octahedral geometry.     

Synthesis,crystal structure and antifungal activity of a divalent cobalt(II) complex with uniconazole

Azole compounds have attracted commercial interest due to their high bactericidal and plant‐growth‐regulating activities. Uniconazole [or 1‐(4‐chlorophenyl)‐4,4‐dimethyl‐2‐(1H‐1,2,4‐triazol‐1‐yl)pent‐1‐en‐3‐ol] is a highly active 1,2,4‐triazole fungicide and plant‐growth regulator with low toxicity. The pharmacological and toxicological properties of many drugs are modified by the formation of their metal complexes. Therefore, there is much interest in exploiting the coordination chemistry of triazole pesticides and their potential application in agriculture. However, reports of complexes of uniconazole are rare. A new cobalt(II) complex of uniconazole, namely dichloridotetrakis[1‐(4‐chlorophenyl)‐4,4‐dimethyl‐2‐(1H‐1,2,4‐triazol‐1‐yl‐κN⁴)pent‐1‐en‐3‐ol]cobalt(II), [CoCl₂(C₁₅H₁₈ClN₃O)₄], was synthesized and structurally characterized by element analysis, IR spectrometry and X‐ray single‐crystal diffraction. The crystal structural analysis shows that the Co^II atom is located on the inversion centre and is coordinated by four uniconazole and two chloride ligands, forming a distorted octahedral geometry. The hydroxy groups of an uniconazole ligands of adjacent molecules form hydrogen bonds with the axial chloride ligands, resulting in one‐dimensional chains parallel to the a axis. The complex was analysed for its antifungal activity by the mycelial growth rate method. It was revealed that the antifungal effect of the title complex is more pronounced than the effect of fungicide uniconazole for Botryosphaeria ribis, Wheat gibberellic and Grape anthracnose.