血清TRAF6、activin-A、SFMC水平与子痫前期患者病情及妊娠结局的相关性

目的分析血清肿瘤坏死因子受体相关因子6(TRAF6)、糖蛋白激素-激活素A(activin-A)、可溶性纤维蛋白复合物(SFMC)水平与子痫前期患者病情及妊娠结局的相关性。方法回顾性选取2020年7月至2023年1月郑州大学第二附属医院收治的134例子痫前期患者为研究组,另选取同期健康孕检女性为对照组,根据子痫前期患者病情程度分为轻度、重度患者,所有患者均随访至分娩结束后30 d,根据本次妊娠结局是否发生不良妊娠情况将研究组分为发生、未发生患者。对比对照组和研究组、不同病情程度及不同妊娠结局患者入院时血清TRAF6、activin-A、SFMC水平,并分析其相关性,分析入院时血清各指标水平检测对子痫前期患者妊娠结局的预测价值。结果研究组入院时血清TRAF6、activin-A、SFMC水平高于对照组(P<0.05);重度患者血清TRAF6、activin-A、SFMC水平高于轻度患者(P<0.05);入院时血清TRAF6、activin-A、SFMC均与患者病情程度呈正相关(P<0.05);妊娠不良患者入院时血清TRAF6、activin-A、SFMC水平高于妊娠良好患者(P<0.05);入院时血清TRAF6、activin-A、SFMC水平联合预测子痫前期患者妊娠不良的曲线下面积(AUC)为0.748。结论血清TRAF6、activin-A、SFMC表达与子痫前期患者病情程度及预后密切相关,其三者联合检测对预测子痫前期患者妊娠不良具有较高的应用价值,可辅助临床诊疗。

微型染色体维持蛋白6在黑色素瘤中的表达及其与预后的关系

目的 探讨微型染色体维持蛋白6(MCM6)在皮肤黑色素瘤(SKCM)中的表达及其与预后的关系。方法 通过分析TCGA和GTEx数据库,比较MCM6在SKCM和正常皮肤组织中的表达差异;采用受试者工作特征曲线(ROC)、Cox回归分析和Kaplan-Meier (K-M)分析评估MCM6在SKCM中的临床意义及与预后之间的关系;通过LinkedOmics数据库、蛋白-蛋白相互作用(PPI)网络、GO/KEGG富集及免疫细胞浸润分析对与MCM6共表达的基因进行功能富集分析。结果 MCM6在SKCM中的表达水平明显高于正常皮肤组织(P<0.05),且MCM6的高表达与SKCM的不良预后密切相关。GO功能注释分析显示,与MCM6共表达基因主要参与细胞器分裂、DNA复制、细胞周期检查点等生物学过程。KEGG分析显示,这些基因在细胞周期、细胞衰老、p53信号途径及对药物的耐药性形成等信号传导过程中发挥着重要作用。免疫细胞浸润分析显示,MCM6表达水平与Th2细胞、辅助性T细胞的浸润水平呈正相关;与浆细胞样树突细胞、Th17细胞、自然杀伤细胞及细胞毒性T细胞的浸润水平呈负相关。结论 MCM6在SKCM的发生发展过程中发挥着重要作用,并且与SKCM的预后密切相关,可成为SKCM诊断和预后评估的潜在标志物。

血清miR-223、IL-6水平与复杂型热性惊厥患儿脑损伤的关系

目的 探讨血清微小核糖核酸-223(miR-223)、白细胞介素-6(IL-6)与复杂型热性惊厥(CFS)患儿脑损伤的关系。方法 选取124例CFS患儿(CFS组),根据是否发生脑损伤将CFS患儿分为脑损伤组39例和无脑损伤组85例,另选取46名同期健康儿童(对照组)为对照。采用实时荧光定量聚合酶链式反应与酶联免疫吸附法检测血清miR-223与IL-6水平。Spearman相关性法分析血清miR-223、IL-6在CFS患者血清中的相关性,多因素Logistic回归分析影响CFS患儿脑损伤的因素,受试者工作特征曲线分析血清miR-223、IL-6水平对CFS患儿脑损伤的预测价值。结果 与对照组比较,CFS组血清miR-223水平降低,IL-6水平升高(P均<0.05)。CFS患儿血清miR-223与IL-6水平呈负相关(r=-0.800,P<0.05)。124例CFS患儿脑损伤发生率为31.45%(39/124)。全身抽搐、惊厥发作次数≥2次、惊厥发作持续时间≥5 min、IL-6升高为CFS患儿脑损伤的独立危险因素,miR-223升高为独立保护因素(P均<0.05)。血清miR-223、IL-6水平联合预测CFS患儿脑损伤的曲线下面积为0.899,大于血清miR-223、IL-6水平单独预测的0.803、0.780(P均<0.05)。结论 血清miR-223水平降低和IL-6水平升高与CFS患儿脑损伤密切相关,血清miR-223、IL-6水平联合预测CFS患儿脑损伤的价值较高。

单细胞测序揭示Ly6E分子对乳腺癌4T1细胞移植瘤微环境中DC浸润及功能的抑制作用

目的:本研究利用单细胞RNA测序分析技术(scRNA-seq)初步探索乳腺癌4T1细胞表达淋巴细胞抗原6复合物E(Ly6E)调控肿瘤免疫微环境(TIME)的潜在机制。方法:利用CRISPR-Cas9技术构建Ly6e基因敲除小鼠乳腺癌4T1细胞(Ly6E-KO),观察其和野生型细胞(Ly6E-WT)体外增殖和体内生长能力的差异。流式细胞术分选两类肿瘤组织中的CD45阳性细胞,再进行sc RNAseq分析。对于测序结果,首先利用Seurat软件包筛选差异表达基因谱,根据标记基因进行注释;再利用Cellchat和Monocle2软件分析细胞互作关系和特定免疫细胞的演化轨迹。结果:与Ly6E-WT相比,Ly6E-KO体外增殖能力无显著差异,但体内生长能力显著降低(P<0.001)。ScRNA-seq分析显示,Ly6E-KO移植瘤浸润DC比例显著高于Ly6E-WT,且DC处于更加活跃的增殖和分裂状态;三种DC亚群(pDC、cDC1和cDC3)与T细胞均存在显著的互作关系。同时发现,Ly6E-KO肿瘤中浸润T淋巴细胞增殖、活化及效应相关的基因表达水平均升高,提示Ly6E-KO具有更强抗肿瘤能力。最后,本研究对人类乳腺癌队列的sc RNA-seq数据进行了分析,进一步证实了上述发现。结论:肿瘤细胞Ly6e基因敲除后可通过增加TIME中DC活化及浸润,继而增强机体抗肿瘤免疫应答。

微小染色体维持蛋白复合物6、细胞分裂周期相关蛋白6在肾透明细胞癌组织中的表达及其与恶性生物学行为的相关性研究

目的:探讨微小染色体维持蛋白复合物6(MCM6)、细胞分裂周期相关蛋白6(CDC6)在肾透明细胞癌组织中的表达及其与恶性生物学行为的相关性。方法:2021年1月-2023年12月就诊于天津市中西医结合医院泌尿外科的77例肾透明细胞癌患者,选取其癌组织作为研究组,同源远侧的正常肾组织为对照组;基于GEPIA数据库MCM6和CDC6相关信息,应用单克隆抗体免疫组化技术比较研究MCM6和CDC6在肾透明细胞癌组织和正常组织中的表达;采用qRT-PCR和Western Blotting检测shRNA对MCM6表达的影响:应用CCK-8和集落形成试验检测HTB-47和CRL-1932细胞系的体外增殖结果。结果:与正常肾组织相比,MCM6/CDC6在肾透明细胞癌组织中明显上调,且MCM6上调与患者无病生存率降低相关(P<0.05);敲低HTB-47和CRL-1932细胞系的MCM6基因可显著抑制肿瘤细胞的增殖,并显著阻滞了肿瘤细胞分裂周期停留在G2/M期;MCM6的表达与肾癌体积大小显著相关(P=0.010),根据GEPIA数据库显示,CDC6与MCM6有明显的相关性(P<0.01),所有表达结果均通过免疫组化染色检测进一步验证。结论:MCM6的表达上调与肾透明细胞癌的恶性生物学行为和临床进展有关,其可通过影响细胞周期来调控细胞增殖,在肾透明细胞癌组织中,MCM6和CDC6表达量均显著上调且关系密切,表明MCM6/CDC6可能成为预测肾透明细胞癌的潜在生物标记物,并可能成为该病靶向治疗一个新的治疗靶点。

mTOR Complex1-S6K1信号通路在2型糖尿病发生发展中的作用

随着人们生活水平的提高，全身代谢性疾病逐渐成为影响人类生活质量的主要疾病之一。在近年的调查研究中发现，糖尿病的发生率较过去20年间呈数倍增加，尤其糖尿病并发症引起的死亡率较前大大提升。所以深入研究糖尿病的发生、发展机制成为目前治疗糖尿病的关键。mTOR信号通路是雷帕霉素的靶分子，是丝氨酸／苏氨酸蛋白激酶，在感受营养信号、调节细胞生长和增殖中起关键性的作用。mTORComplexl-S6K1信号通路可受如生长因子、激素、能量信号等多种因素的调节，在糖尿病的发生、发展中起重要作用。本文将详细阐述mTORComplexl-S6K1信号通路在糖尿病的发生发展中的作用机制。

Effects of Membrane Lipids on the Electron Transfer Activity of Cytochrome b_6f Complex from Spinach

A lipid_depleted cytochrome b 6f (Cyt b 6f) preparation was obtained from spinach (Spinacia oleracea L.) chloroplasts. Upon reconstitution of this preparation with the membrane lipids purified from spinach thylakoid, the effects of different membrane lipids on the electron transfer activity were studied. The results show that the electron transfer activity of Cyt b 6f is obviously stimulated to different extents, respectively, by monogalactosyldiacylglycerol (MGDG), digalactosyldiacylglycerol (DGDG), phosphatidylcholine (PC), phosphatidylglycerol (PG) and sulfoquinovosyldiacylglycerol (SQDG), and that the extents of stimulation may be closely related to the charge of the membrane lipids. The stimulation of non_charged lipids (MGDG, DGDG) and neutrally_charged lipid (PC) was high with a maximum enhancement of 89%, 75% and 77%, respectively; but the stimulation of two kinds of negatively_charged lipid (PG and SQDG) was relatively low with a maximum enhancement of 43% and 26%, respectively.

复杂环境中SF6气体泄漏红外图像监测算法研究

SF6气体因其优异的绝缘和灭弧性能被广泛应用于各类电力设备中,对电力设备中的SF6泄漏的监测及预警研究,不但对电力系统的安全稳定运行具有重大意义,还是建设生态文明实现碳中和的有力举措。为解决实际工程中出现的多种因素对气体泄漏监测的干扰,本文针对复杂环境建立了SF6气体泄漏实验平台,获得不同条件下的气体泄漏红外图像数据集,并结合红外数据增强的Yolov4算法实现了对SF6气体泄漏监测。实验结果表明,在复杂环境中本文提出的监测模型对SF6气体泄漏的监测精度为80%,相对于当下主流目标监测模型,表现出更好的鲁棒性。同时,将Yolov4算法与图像增强算法结合,可提升识别精度约9.08%,优化了模型稳定性。然后分析在同一红外成像视角下发生多处SF6泄漏的监测结果,结果显示多点泄漏的识别精度低于单点泄漏,但在工程中依旧具有实用性。最后对比红外相机不同安放位置对于气体泄漏识别的影响,发现当相机与泄漏点垂直时(θ=90°),本模型的识别置信度可达到0.95,而当相机处于泄漏点侧面时(θ=10°),置信度降为0.51,但该精度依然满足实际监测需要。

络合剂对LaSrFeCoO_(6)催化剂制备及催化性能影响

通过溶胶凝胶法,分别采用柠檬酸、酒石酸、葡萄糖、蔗糖、EDTA作为络合剂制备LaSrFeCoO_(6)催化剂,以催化甲烷燃烧为目标反应,考察催化剂的活性。通过比表面积测定(BET)、X射线衍射分析(XRD)、氢还原(H_(2)-TPR)、扫描电镜(SEM)及热分析(TG-DSC)等技术对催化剂进行性能表征。考察不同络合剂对LaSrFeCO_(6)催化剂结构和性能影响。通过实验结果可以得到:经过800℃高温焙烧后,催化剂具有完整的钙钛矿晶型。不同络合剂对催化剂的结构和性能有较大影响;柠檬酸作为络合剂时,所制备LaSrFeCO_(6)催化剂具有较好的催化活性,T10%(起燃温度)为425℃,T90%(完全转化温度)为600℃。

Hydrothermal Syntheses and Crystal Structures of Six Complexes Constructed from 1,3,5-Benzenetricarboxylic Acid and 4'-(4-Pyridyl)-2,2':6',2''-terpyridine Mixed Ligands

Six new transition metal complexes, [Zn（HBTC）（PYTPY）]n·n PYTPY（1）, [Cu（HBTC）（PYTPY）]n·n PYTPY（2）, [Co（HBTC）（PYTPY）]n·n DMF（3）, [Mn（HBTC）（PYTPY）]n·n DMF（4）, [Cd（HBTC）（PYTPY）（H2O）]n·2nH2O（5）, and [Co（HBTC）（PYTPY）（H2O）2]（6）,（H3BTC = 1,3,5-benzenetricarboxylic acid, PYTPY = 4＇-（4-pyridyl）-2,2＇：6＇,2＇＇-terpyridine, DMF = N,N？-dimethylformamide）, have been synthesized and characterized by elemental analysis, IR and X-ray single-crystal diffraction. Complexes 1~5 all feature one-dimensional chain structures, and complex 6 exhibits a zero-dimensional structure. Complexes 1~5 present three-dimensional（3D） supramolecular frameworks via π-π stacking interactions, whenas 6 has also a 3D supramolecular structure assembled by hydrogen bonding. Meanwhile, complexes 1 ~ 6 exhibit the thermal stabilities and photoluminescent properties.

Syntheses, Structures and Photoluminescence of the Cadmium(Ⅱ) and Copper(Ⅱ) Complexes Based on 4'-(4''-Pyridyl)-2,2':6',2''-terpyridine and 1,4-Benzenedicarboxylic Acid Ligands

Two new metal-organic complexes [Cd2（1,4-BDC）（4-pytyp）（H2O）4]·（1,4-BDC）（1） and [Cu2（1,4-BDC）（4-pytyp）2（H2O）2]·（1,4-BDC）·8H2O（2）（4-pytyp = 4＇-（4＇＇-pyridyl）-2,2＇：6＇,2＇＇-terpyridine, 1,4-H2 BDC = 1,4-benzenedicarboxylic acid） have been synthesized under hydrothermal conditions and characterized by elemental analysis, infrared analysis and X-ray single-crystal diffraction. The scrutiny of single-crystal structure reveals that complex 1 forms to a 3D supramolecular network linked by π-π stacking interactions and hydrogen bonds. X-ray diffraction analysis reveals that complex 2 exhibits a 3D supramolecular network linked through complicated hydrogen bonds. The thermogravimetric analysis and photoluminescent properties of 1 and 2 are discussed in detail.

Synthesis and Crystal Structure of a Binuclear Gadolinium（Ⅲ） Complex Bridged by Cucurbit[6]uril

A new cucurbit[6]uril bridsed binuclear complex {[Gd（H2O）6]2[Q6（H2O）]}C16·4H2O, where Q6 represents cucurbit[6]uril, has been synthesized and characterized by X-ray diffraction. The crystal structure shows that the complex has an extended cucurbit[6]uril-bridged structure consisting of two gadolinium（Ⅲ） ions, in which each gadolinium（Ⅲ） ion is coordinated with two neighboring carbonylic oxygen atoms of Q6 and six oxygen atoms of water molecules that leans toward one side of the portal. One disordered guest water molecule resides in the Q6 molecule cavity and occupies two different positions. Hydrogen bonds assemble the complcx to threedimensional supramolecular structure.

Hydrothermal Syntheses, Crystal Structures and Luminescence Properties of Cu(Ⅱ) and Cd(Ⅱ) Complexes Assembled by 6-Hydroxypicolinic Acid and 1,10-Phenanthroline

Two new complexes based on 6-hydroxypicolinic acid(H_2picO) and 1,10-phenanthroline(phen), such as [Cu_4(picO)_4(phen)_4]·12 H_2O(1) and {[Cd_4(picO)_4(phen)_4(H_2O)_2]·5H_2O}_n(2), have been synthesized and characterized by IR, elemental analyses, thermogravimetric analyses and X-ray diffraction technique. Single-crystal X-ray diffraction analyses revealed that the two complexes both crystallize in the triclinic system, space group P(16)-. For complex 1, the picO ligands adopt a tridentate coordination mode to link copper(Ⅱ) ions into dimmers. PicO ligands also adopt a tridentate mode in complex 2, which connects the cadmium(Ⅱ) to form a one-dimensional chain. Moreover, luminescent properties of 1 and 2 were also investigated.

Synthesis and Structural Characterization of a New Cadmium(Ⅱ) Complex Bridged by Endo-norbornene-cis-5,6-dicarboxylic Acid

A polynuclear complex [Cd（endc）（H20）]n·nH2O （endc = endo-norbornene-cis- 5,6-dicarboxylate anion） has been synthesized by the hydrothermal reaction of cadmium nitrate tetrahydrate with endo-norbornene-cis-5,6-dicarboxylic acid in 1：1 molar ratio, and structurally characterized by single-crystal X-ray diffraction. It crystallizes in monoclinic, space group P21/c with α = 1.16471（7）, b = 0.95334（7）, c = 0.91109（9） nm, Z= 4, V= 1.01035（14） nm^3, D, = 2.160 g/cm^3,μ = 2.172 mm^-1, F（000） = 648, R = 0.0302 and wR = 0.0752. According to structural analysis, each Cd（II） ion is coordinated to six O atoms from three endc anions and one water molecule, giving a distorted octahedral geometry. Two- dimensional layer arrangement of the title complex is constructed from the bridging nature of endc. It is worth notice that adjacent two-dimensional layers are joined together to form a three-dimensional supramolecular framework via intermolecular hydrogen bonding interactions.

Microwave Preparation and Spectroscopic Investigation of Binuclear Schiff Base Metal Complexes Derived from 2,6-Diaminopyridine with Salicylaldehyde

The binuclear Schiff base complexes prepared by condensation 2,6-diamino-pyridine and salicylaldehyde (LH) by using microwave and adding metal salts to ligand by same ratio. The Schiff base ligand was checked by infrared, electronic spectra and 1HNMR spectroscopy and prepared complexes characterized by molar conductivity, infrared, electronic spectra and susceptibility measurements. The values of molar conductivities reveal that the complexes are non-electrolytes, from obtained data of electronic spectra and magnetic moment, an octahedral geometry was suggested, coordinated to the metal ions in a manner with N donor sites of imine groups, and oxygen of phenolic OH group.

Crystal and Molecular Structure of an Inclusion Complex of p-tert-Butylcalix[6]arene with Toluene

An inclusion complex between p-tert-butylcalixarene and toluene was prepared. It crystallized in the monoclinic system with space group P 2 1/ n , a =1.734 7(2) nm, b =1.903 2(2) nm, c =1.972 9(2) nm , β =94.74(1)°, V =6.491 2(14) nm 3, Z =4. The toluene molecule was included in the macrocycle cavity. The calixanene is of a pinched cone conformation.

Synthesis,Crystal Structure and Fluorescence Property of a New Trinuclear Nickel(Ⅱ) Complex Bridged by 2,6-Pyridine Dicarboxylic Acid

A new trinuclear nickel complex,[Ni3（pdc）3（2,2＇-bipy）3（H2O）2]·2H2O（H2pdc = pyridine 2,6-dicarboxylic acid,2,2＇-bipy = 2,2＇-bipyridine） has been hydrothermally synthesized and characterized by IR,elemental analysis and X-ray diffraction methods.Crystal data for this complex：monoclinic,space group P21/n,a = 21.206（4）,b = 10.002（2）,c = 28.066（6）,β = 108.18（3）°,C51H41N9Ni3O16,Mr = 1212.06,V = 5.656（2） nm3,Dc = 1.423 g·cm-3,μ（MoKα） = 1.062 mm-1,Z = 4,F（000） = 2488,GOOF = 1.034,the final R = 0.0543 and wR = 0.1237 for 6149 observed reflections with Ⅰ 〉 2σ（Ⅰ）.In the complex,three nickel（Ⅱ） ions are bridged by the pyridine 2,6-dicarboxylic acid groups,and all nickel（Ⅱ） ions are seven-coordinated by nitrogen atoms of 2,2＇-bipyridine and pyridine 2,6-dicarboxylic acid and oxygen atoms from pyridine 2,6-dicarboxylic and water to adopt a severely distorted pentagonal bipyramidal geometry.The emission and excitation peaks of the complex in ethanol solutions are located at 336 and 316 nm,respectively.

Synthesis, Structure and Catalytic Activity of a Manganese(Ⅲ) Complex Based on 2-(2-Hydroxyphenyl)-5,6-dichlorobenzimidazole Ligands

A new ligand, 2-（2-hydroxyphenyl）-5,6-dichlorobenzimidazole, H2pbmCl2（1）, and a novel MnIII complex, [MnIII（HpbmCl2）（pbmCl2）（DMF）2]（2）,（DMF = N,N-dimethylformamide）, have been synthesized and characterized. The crystal of compound 1（C13H8Cl2N2O, Mr = 279.12） belongs to the monoclinic system, space group P21 with a = 3.770（5）, b = 25.20（3）, c = 5.865（7） A, = 92.727（17）o, V = 556.6（12） A3, Z = 2, Dc = 1.665 g/cm^3, S = 1.137, μ= 0.568 mm^-1, F（000） = 284, the final R = 0.0876 and wR = 0.2334 for 1848 independent reflections. The molecule is planar due to the presence of a strong intramolecular hydrogen bond between O–H group of phenol and N atom of imidazole. H2pbmCl2（1） molecules are arranged into a one-dimensional linear chain through intermolecular hydrogen bonds（N–H…O and C–H…Cl）. The crystal of complex 2（C32H27Cl4MnN6O4, Mr = 756.34） belongs to the monoclinic system, space group P21/c with a = 19.043（10）, b = 10.808（5）, c = 18.704（11）A, β= 115.540（6）°, V = 3473（3） A3, Z = 4, Dc = 1.446 g/cm^3, S = 1.3, μ = 0.733 mm-1, F（000） = 1544, the final R = 0.1219 and wR = 0.2681 for 7811 independent reflections. The Mn ion adopts a distorted octahedral geometry coordinated by two deprotonated H2pbmCl2 ligands and two DMF molecules. The [MnIII（HpbmCl2）（pbmCl2）（DMF）2] molecules are arranged into a three-dimensional structure through hydrogen bonds（N–H…N, C–H…N and C–H…Cl） and weak π···πinteractions. The activity measurements suggest that complex 2 is able to serve as a catalyst for H2O2 disproportionation reaction to form O2 in neutral water solution.

Synthesis and fluorescence properties of Tb(Ⅲ) complexes with pyridine-2,6-dicarboxylic acid derivatives

Two novel ligands named 4-styrylpyridine-2,6-dicarboxylic acid (4-SPDA) and 4-(4-(2-(2, 6-dicarboxypyridin-4-yl)- vinyl)styryl)pyridine-2,6-dicarboxylic acid(DSPDA) and their complexes with Tb(Ⅲ) were synthesized and characterized by infrared spectrometry, 1H nuclear magnetic resonance, elemental analysis and gas chromatograph-mass spectrometry. The ligand synthetic route was optimized. The fluorescence properties of the complex in solid state, in different kind of solvents and in solutions with different pH values were investigated in detail. The results show that the yields of DSPDA and 4-SPDA reach over 78% by Wittig-Horner reaction and other eight pyridine-2, 6-dicarboxylic acid derivatives with different substituents on pyridine ring, and their complexes with Tb(Ⅲ) are also obtained. The fluorescence intensities of the complexes with electron-donating groups are more intense than those of the complexes with electron-withdrawing groups on pyridine ring; fluorescence intensities of the complexes are the strongest in neutral solution (pH=7), and the less the dipole moment of solvent molecule is, the stronger the fluorescence intensity is. It is found that the two ligands (4-APDA and DSPDA) are the good sensitizers for Tb(Ⅲ) ion.

CRYSTAL STRUCTURE OF BINUCLEAR Y(Ⅲ) COMPLEX WITH p-METHYLBENZOIC ACID, Y_2(p-CH_3C_6H_4COO)_6(C_(12)H_8N_2)_2

Y_2(p-CH_3C_6H_4COO)_6(C_(12)H_8N_2)_2, Mr=1349.08, triclinic, space group P, a=13.00(3), b=19.743(2), c=12.754(3)A, α=97.94(1), β=106.24(2), γ=91.66(1)°, V=3177(1)~3, Z=2, Dc=1.41gcm^(-3), λ(MoKα)=0.71069, μ=18.92 cm^(-1), F(ooo)=1384, T=295K, final R=0.073 for 6504 observed reflections with Ⅰ>36(Ⅰ). There are two nonidentical binuclear molecules with different bridging connection patterns in a cell. One has four bridging carboxyl groups bound two Y(Ⅲ) ions and another only has two. The Y-Y distance is 4.196 for the former and 5.302 for the latter respectively.