配位体

The absorption spectra of the terpyridyl platinum acetylide complex containing monoazacrown moiety in the acetylide ligand was blue-shifted upon complexation with metal cations.

对位带有氮杂-15-冠-5冠醚的苯乙炔为辅助配体的三联吡啶Pt络合物TAC在金属离子的存在下吸收光谱的变化明显不同。

The bisquaramidoacids also showed good enantioselectivities in the reduction of diketones and up to 90％ ee were obtained.

配体中方环C3位的杂原子在反应中可能起到了Lewis碱的作用，从而使这类配体具有了双功能性。

The intermetallic distance is 7.920(2)〓 which is nearly 2 〓 longerthan that of a analogue formed with olgobipyridine containing two bipyridine linked by〓 at 6,6'- positions.

新配体〓和〓按下列路线合成：〓为首例5，6-位连接的不对称位置取代的寡聚二联吡啶配体，〓的合成也是首次报道。

It is concluded that if palladium ion coordinated with ligands is electron deficient and ligands have less steric hinderance, the palladium complex will have higher catalytic activity. According to this rule, we can tone ligand in palladium complex and improve its activity.

如果配体能使Pd〓的电子缺乏，具有较小的空间位阻，Pd配合物的活性就会提高，因此可根据这一结论对Pd配合物中的配体进行调配，提高其催化活性。

One class is CAAX-mimetic compounds with an imidazolyl residue on one end and a carboxylic group on the other connected by benzodiazepine scaffold at different positions.

连有咪唑基的苯并二氮杂草化合物，以苯并二氮杂草-2-酮为分子骨架，7位连接含有咪唑基的侧链，1位或3位连接含羧基或酯基的侧链。此类化合物模拟了CAAX配体。

However, three isomers are obtained when [3(5)-〓-5(3)-MeS]pyrazole or[3(5)--5(3)-MeS]pyrazole reacts with 〓 in the same conditionpossibly owing to the influence of both the steric and electronic factors.

通过配体与〓的光化学反应，首次分离得到了不对称取代的双吡唑烷VIB金属配合物，但3位取代基的立体位阻减弱了双吡唑烷与〓的反应。

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。

By following the "self-assisted molecular editing" protocol first established in our labs,a number of Aphos ligands were efficiently prepared from a single starting material and they were screened for catalytic efficacy, leading to the discovery of the best-performing Aphos appended with a 3-nitrophenyl group at the C4 position.Combination of this Aphos with Pd_2 offers a precatalyst for successful cross-coupling of unactivated aryl chlorides with aryl boronic acids at room temperature.The reactions took place under mild basic conditions to produce the products in high yields.

通过我们首次提出的&自助分子剪裁&的概念从单一起始物快速合成和筛选了一系列膦配体，并发现C4位含3-硝基苯基的的膦配体和醋酸钯联用可以在室温下顺利地催化不活泼氯代芳烃和芳基硼酸的偶联反应，反应条件温和且产物收率很高。

In the reduction of 1, 6-diphenyl-1, 6-hexanedione catalyzed by the bis-squaryl proline, good enantioselectivities were obtained, the ee values were up to 90%.We also studied the asymmetric borane reduction of prochiral ketone catalyzed by a series of thiazolidine ligands.

本文考察了由L-半胱氨酸衍生的2-位无取代基的以及2-位芳基取代的噻唑烷酸及醇配体在前手性酮的不对称还原反应中的催化性能。

We retrospectively determined the correlation of results of lymphocyte crossmatch tests by direct complement-dependent cytotoxicity, to the outcomes of 585 consecutive ABO-identical and human leukocyte antigen-mismatched living donor liver transplants (male:female=276:309; median age, 18 years).

我们回顾性研究了连续585名ABO血型相容但HLA错配的活体肝移植的结果（男性：女性=276：309；中位年龄18岁），并研究采用补体依赖细胞毒性试验来检测淋巴细胞交叉配型结果与其的关系。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。