查询词典 coordination

It is the fluorosilicic ion that exsits in the slurry and plays an important role in flotation, fluorosilicic ion not only reacted with Fe〓 on the surface of aegirine to form ionic compound, but also formed stable Si-F bond in Si-O etching reaction. Only ionic compound was obtained when it was attached to hematite surface according to the theories of coordination chemistry, Compared with SiF〓, Fatty acid ion preferentially acts with Fe〓 on the minerals surface, therefore, SiF〓 Can't obstruct the adsorption of collector on the surface of hematite completly, but can reduce the flotation recovery of aegirine selectively.

运用FTIR、XPS等测试方法仔细研究了氟硅酸盐抑制剂对含铁硅酸盐钠辉石的选择性抑制作用机理，氟硅酸盐在弱酸性条件下对赤铁矿浮选的抑制作用很微弱，而对含铁硅酸盐钠辉石强烈抑制，从而扩大了两者之间的浮选差异；SiF〓是矿浆中起抑制作用的主要成分，SiF〓不仅与钠辉石表面的Fe〓形成离子型配合物，而且还与Si-O键形成稳定的Si-F共价键，而与赤铁矿表面只能形成离子型配合物，根据晶体配位场理论，与SiF〓相比较羧酸根离子将优先与矿物表面Fe〓发生配位作用，因此SiF〓的存在并不能完全阻碍捕收剂在赤铁矿表面的吸附作用，却能够选择性地抑制钠辉石的上浮。

The copper atom is in a planar coordination site of [N_2O_2] and it devites from the mean plane by only 0.80 pm. Byπ-πstacking interactions, a alabastrine structure was obtained.(2)Schiff-base complex [Cu(H_2O)]·H_2O, where H3GS is the 3-carboxyl -salicylidene glycine, was synthesized and characterized by elemental analysis, IR spectra and single-crystal analysis. The crystal belongs to monoclinic system, space group P2(1)/c, a=848.46(3)pm, b=681.54(3)pm, c=1967.16(8)pm,β=95.8210(10)°, Z=4, R_1=0.0279, wR_2=0.0724. The copper atom is in a square-pyramidal field with the base

结果表明该晶系属单斜晶系，空间群P2(1)/c，晶胞参数：a=848.46(3)pm，b=681.54(3)pm，c=1967.16(8)pm，α=90°，β=95.8210(10)°，γ=90°，Z=4，R_1=0.0279，wR_2=0.0724，Cu原子位于轻微变形的四方锥场底心，底面被氮原子、酚氧原子、甘氨酸羧基的一个氧原子和一个水分子氧原子占据，而甘氨酸羧基的另一个氧原子占据相邻分子的锥顶，因而形成一维链状结构；合成了单核双聚配合物Na_2[Cu_2_2]·2H_2O ，铜三核配合物Cu_3_2·5H_2O和铜锌异三核配合物ZnCu_2_2·5H_2O，并用元素分析，IR光谱，电子光谱和磁化率测定对配合物的组

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本科以上学历；公关、传媒、新闻等相关专业；-5年以上时尚服饰类媒体公关相关工作经验；拥有良好的公关社会资源；-具备与公司共同成长的决心和勇气，执行力强，勇于面对压力和挑战；-优异的危机处理意识，能够接受高强度的工作；-有较强的事业心、责任感和协调能力，优异的团队合作精神；-良好的英语能力。

A face-selective coordination of allene to the palladium center is proposed to account for the present stereoselectivity.

此加成反应的反应机构是经由I-B键氧化加成而启动的，并不是直接B-B键的氧化加成。

During the investigation of the reactivity of O_SCl_2(PPh_3)_2CH=C(PPh_3CHCH=CH_2 and O_SCl_2(PPh_3)_2CH=C(PPh_3C(=CH_2)CH=CH2, several stable osmacycles with novel structure, such as osmabenzenes, osmafurans, osmacycles containing intramolecular-coordinated allene, intramolecular-coordination osmacycles containing osmacarbene, an osmacyclopentadiene, were isolated during the investigation of the reactivity of O_SCl_2(PPh_3)_2CH=C(PPh_3CHCH=CH_2 and O_SCl_2(PPh_3)_2-CH=C(PPh_3C(=CH_2)CH=CH_2.In addition, some convenient and efficient methods to prepare these osmacycles were developed.

首先，合成出两种具有反应活性的金属杂五元环IC配合物OsCl_2(PPh_3)_2CH=C(PPh_3CHCH=CH_2和OsCl_2(PPh_3)_2CH=C(PPh_3C(=CH_2)-CH=CH_2，并对它们进行了系统表征；进而，研究了这些活性五元配合物的反应性，合成出多种稳定的锇杂环配合物，其中包括锇苯、锇呋喃、含配位联烯的锇杂IC环化合化物、含锇卡宾的IC环化物、首例锇杂环戊二烯化合物等多元化的产物。

These coordination compounds mostly have group ⅡB metals as center ions. The complexes are classified with ligand as three types: thiourea type, allylthiourea type and thiosemicarbazone type.

这类配合物大都以ⅡB族金属为中心离子，根据配体不同可分为硫脲类、烯丙基硫脲类及缩胺基硫脲类3种类型。

The results indicated that the Fe3+ ion of Fe-AO-PAN was coordinated with three amino nitrogen atoms and three hydroxyl oxygen atoms of three amidoxime units on the surface of AO-PAN by covalent bond, and the coordination number was six.

结果表明， Fe-AO-PAN中的Fe3+能够与AO-PAN表面三个偕胺肟链节单元的三个氨基氮原子和三个羟基氧原子进行配位反应，配位数为6。

The coordination process and structure between amidoxime modified polyacrylonitrile fiber and FeCl3 in aqueous solution were studied by using X-ray photoelectron spectroscopy, Fourier transforminfrared spectrometer, dynamic thermal mechanical analyzer, and electrical conductivity method, respectively.

在室温条件下应用偕胺肟改性聚丙烯腈纤维与FeCl3反应制备了聚丙烯腈纤维铁配合物，并分别使用X射线光电子能谱、傅立叶红外光谱、动态热机械分析和电导法对Fe-AO-PAN进行了表征以确定其组成结构。

Rich experience in teaching toefl / sat with effective organizational and planning skillsbachelor's degree or above; passion for educationparticipated in the related examination and obtained high scores,having an in-depth command of toefl/sat test technique enthusiastic, animative, broad range of knowledge strong interpersonal communication, coordination, organizational skills and a high degree of team spirit and responsibility

精通toefl/sat培训，具备组织制定开班计划能力英语本科学历以上；上课激情生动，热爱教育事业参加过相应科目的考试并取得高分，对所应聘考试项目的题型有相当的研究赋有朝气和活力，上课生动活泼，知识面宽广具有很强的人际沟通、协调、组织能力以及高度的团队精神，责任candidate requirements

The orientation and distortion of anionic coordination-polyhedra in piezoelectric and ferroelectric crystals are studied in this article.

本文研究了压电、铁电晶体中负离子配位多面体的结晶方位与形变，提出了压电晶体中同一种负离子配位多面体的结晶方位是一致的。

I can still vividly recall the impressive scenes you gave. You were among my friends and relatives who accompanied me from my house to the seaport and when the porters were slow to show up, you obligingly carried my suitcase for me.

你对我的种种感人情意，使我记忆犹新，那天你随着我的亲友从家里送我上轮船，搬运工迟迟不来，你毅然替我提着皮箱上船。

St. Nicholas became the patron saint of Russia, where he was famous for his red cape, flowing white beard, and bishop's mitre.

圣尼古拉成了俄罗斯人的守护神，在那里，他以身披红斗篷，留着飘逸的白胡须，戴着主教法冠而闻名。