双位

The coordination geometry of the Eu atom is best described as a strongly distorted square-antipyrism.. The two Eu atoms are bridged by two N-oxide oxygen atoms forming a dimeric unit with crystallographic inversions centre. The Eu……Eu distance is 4.2137(9)〓. The two europium atoms and two bridging oxygen atoms is coplanar. The angles of Eu(1)-O(7)-Eu(1A) and O(7)-Eu(1)-O(7A) are 117.82(14)° and 62.18(14)°, respectively. 15 is the first dinuclear triboluminescent lanthanide complex reported.

同时还测定了其摩擦发光光谱与其光致发光光谱，并讨论了晶体结构和摩擦发光活性之间的关系。X-射线结构分析表明，15为有对称中心结构的配合物，每个Eu与三个HTTA的六个O原子和两个PyO的两个O原子形成八配位的四方反锥几何构型，2个N-Oxide O原子桥联两个Eu，形成了一个双核配合物，Eu。。。。

Both iron atoms of the binuclear unit are bridged by one oxy atom and two acetate groups. Each iron atom is also bound to facially - coordinating tridentate IDB ligand with the aliphatic nitrogen donor situated trans to theμ- oxy atom. Each iron centers is in a distorted octahedral symmetry.

每个双核单元的两个铁原子均通过一个氧原子和两个醋酸根连接，每个铁原子同时还与位于桥氧原子对位的三齿配体IDB重脂肪链上氮原子相结合，每个铁中心为一变形八面体结构。

In the results of the optical properties, these molecular monomers have different HOMO and LUMO energy gap such that there are dual-emission and energy transfer mechanism in solution fluorescence spectrum. In the study of the electrochemical properties, various of triphenylamine derivaties have different oxygen binding site and they make elecropolymerization happen or not. In the applications of the hole-transport materials, the performance of compound 21 is better than other compounds. The electropolymerized-film may have residual cation molecules so they can increase the concentration of hole-transport. Due to this reason , compound 21 is suitable to become hole-transport materials.

在光学研究方面，由於目标化合物内单体的HOMO及LUMO能阶差异，使得在溶液萤光放射上有双发射及能量转移的情形发生；在电化学研究方面，不同的三苯胺衍生物由於氧基的位置不同，使得取代基在间位的化合物有不错的电聚合效果；而元件的应用上，具有咔唑基团的化合物21由於在形成电聚薄膜后，可能有残余的阳离子态化合物，使得电聚薄膜内的电洞数浓度较高，因此与其他元件相比之下，有较低的启动电压和不错的元件效率。

For thecopper and silver complexes, tripodal ligands exhibit rich coordination forms, andthe coppers exhibit different geometry such as square-plan, square pyramidal, andtrigonal bipyramidally geometry.

在铜、银配合物中，三脚架配体表现出多种配位方式，铜离子有平面四边形、四方锥、三角双锥等不同的空间构型。

The HardyWeinberg equilibrium for genotypic distribution was estimated by the goodnessoffit test.The UNPHASED program was applied to perform the transmission disequilibrium test and the combined effect analysis of the paired SNPs.

利用拟合优度χ2检验分析等位基因和基因型分布频率是否符合哈迪-温伯格定律，应用遗传统计学软件进行2个SNPs的传递不平衡检验以及双位点联合作用分析。

The latter has only one PL band peaking at about 1.48eV,while the former is a double-band PL spectrum with peaks at both 1.48eV and 1.97eV.The electroluminescenceform the Au／scored Si-rich SiO2 film／p-Si sample is about 6 times in intensity of that of the Au／unscored one.

未刻划样品的PL谱只有一个峰，位于840nm(1.48eV)，而刻划样品的PL谱是双峰结构，峰位分别位于630nm(1.97eV)和840nm.800℃退火的刻划富硅二氧化硅/p-Si样品在背面蒸铝制成欧姆接触和正面蒸上半透明金电极后在正向偏压10V下的电致发光强度约为同样制备的未经刻划样品在同样测试条件下的EL强度的6倍。

The results showed that the addition leading to -2-phenyl-2-(2-vinylpiperidin-1-yl) ethanol 7 could proceed with good diastereoselectivity and excellent yield (95%).(3) The selective N-deprotection of -2-phenyl-2-(2-vinylpiperidin-1-yl) ethanol 2 without affecting the vinyl group in the substrate were untaken.(4) The Zip reaction for the transformation of -1-(3-aminopropyl)-3-methylazecan-2-one 8 to -7-Methyl-1, Sdiaza-cyclotetradecan-6-one 9 were undertaken. The results showed that, under controlled conditions, acceptable yields (43%) could be achieved and racemization can be minimized during the ring expansion reaction.

该合成路线与文献方法相比，反应条件较温和，也缩短了反应时间；(2)哌啶衍生物2与乙烯基格氏试剂进行加成反应的条件和立体选择性，取得了较好的结果（差向异构体比为80：20，产率95％左右）；(3)不饱和哌啶衍生物7在不影响碳碳双键的情况下去除苯基甘氨醇手性辅助基的条件；(4)具有羰基α位手性的氨基酰胺8在不同条件下经Zip重排反应转变为9的反应，控制反应条件，可使反应中消旋化减小到最小的程度。

A 17 year-old girl with double uteri and unilateral cervical obstruction on the left side is reported.

一位 17 岁女孩患有双子宫，并伴有左侧子宫颈不完全阻塞及左侧肾脏不发育。

Behold the twelve Adityas, the eight Vasu's, the eleven forms of Siva, the twin Asvins as well as the forty-nine Maruts, Behold O Arjuna, innumerable wonders never seen before.

看看那十二阿迪特耶斯，八大瓦苏，塞瓦的十一种形象，阿斯乌印斯双雄，以及49位玛鲁斯等半人神的不同展示吧。

Muscular and handsome breed of working dog known for its distinctive white mask and dark widow's peak; also called Arctic sled dog; double coat is thick, of medium length, coarse, and insular and comes in various shades of gray with lighter white and darker black areas; ears relatively small compared to head and are erect and slightly rounded at ends; tail is bushy and carried gaily and loosely curled over rump; eyes are almond-shaped, wolflike yet trusting, and light brown in color; adult stands 20 25 in.(51 64 cm) tall at shoulders and weighs 50 85 lbs (23 39 kg); firm, compact feet allow dog to pull heavy loads through deep snow; where the Siberian husky is designed for speed, this breed is designed for power; very fond of people, especially children; enjoys rolling around in snow and prefers outdoor life; great at sled-pulling contests; named after the Mahlemuts, nomadic and skilled Inuit people who migrated from Siberia over a land bridge into northwestern Alaska with these dogs thousands of years ago.

爱斯基摩犬是工作犬的一支，肌肉发达，英俊潇洒，因其与众不同的白色双颊和暗色额头&V&型发尖而闻名，它也被称为&北极雪橇犬&；厚而粗糙适中长度偏狭的双层毛皮，以多样化的灰度梯度混杂着轻度的白色和深黑区域表现出来；耳朵相对头部较小，挺立并轻微地环绕在头部末位；尾巴浓密的，松弛地卷曲盘绕在臀部上方；眼睛呈杏仁状，狼一般的长相，值得信赖，毛色呈浅棕色；成年犬站立肩高51—64厘米，重23—39公斤；牢固坚实的足部使得爱斯基摩犬能够拉动重负载在深厚的雪中前进；如果说西伯利亚哈士奇被认为是速度的象征，爱斯基摩犬被认为是力量的象征；它们喜欢人类，尤其是孩子，喜欢在雪中滚动，尤其喜欢户外生活；非常擅长牵引雪橇的竞赛；它以爱斯基摩而命名，游牧和富有经验的因纽特人在几千年前和这些狗一起从西伯利亚通过北方大陆桥迁移到阿拉斯加。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。