配位

Six ruthenium benzylidene complexes (60-65) containing pyridine derivative ligandsare prepared and three of them are new.

为此，合成了六个吡啶及其衍生物配位的钌卡宾配合物60-65，其中三个是新的。

Methylpyridine-coordinated ruthenium benzylidene complex 62 shows thehighest catalytic activity. TOF=960 h~(-1) is achieved during RCM reaction of 50, TOF=4 h~(-1)is obtained during the CM reaction of acrylonitrile with 1-decene.

其中，2-甲基吡啶配位的钌卡宾配合物62的催化活性最高，在催化烯烃50闭环交互置换反应时TOF可达960 h~(-1)；催化丙烯腈与1-癸烯交叉交互置换反应时TOF达到4 h~(-1)。

Here, we report the identification of a bidentate salicylic acid-based Lyp inhibitor I-C11 with excellent cellular efficacy.

在此，我们对一种有良好细胞作用的二齿配位体水杨酸基Lyp抑制剂——I-C11的识别加以报道。

FT-IR spectra show that a bridged bidentate complex acid site was formed.

FT-IR光谱分析结果表明，ST/Al-PILC中SO〓离子与TiO〓形成了桥式双配位的酸中心结构。

A new series of Ni complexes [NiBr2] bearing bidentate amino-oxazoline ligands have been synthesized and applied for polymerization of styrene.

系列新的胺基-恶唑啉双牙配位基及其镍金属错合物，[NiBr2] 4，已被成功地合成出来，并且可应用在苯乙烯的聚合反应上。

The crystal is constructed with binuclear units, in which the two copper atoms are bridged by two phenolic oxygen atoms.

晶体分子中，两个Cu通过酚氧原子连在一起，Cu1处于两个N原子、两个酚氧原子形成的平面四方形中，Cu2处于同一平面，配位原子为两个酚氧原子和两个端基羧氧原子

The tin atoms are five-coordinated with geometry of distorted trigonal bipyramid.

两个锡原子为五配位的三角双锥构型。

The structure is a distorted triangular bipyramid with five coordinated central tin atom.

配合物中锡原子呈五配位畸变三角双锥构型。

Bipyridyl and 1,10-phenanthroline (L3), Cl3SnCH2CH2COORo L (L= L1, a; L2, b; L3, c), formed by low-heating solid-state reaction. The crystal structures of 1 and 2 show that the tin atom adopts a distorted trigonal bipyramid geometry via intramolecular carbonyl oxygen to tin coordination [the distances of Sn-0 bond are 0.2351(6) ran for 1 and 0.2362(3) nm for 2]. Compound 1 belongs to monoclinic with space group P2/c, a = 0.9842(2) nm, b =1. 0923(8) nm, c = 1.23948(11) nm,/?= 93.894(15)°, V= 1.3294(4) ran3, Mr = 366.23, 7 = 4. Compound2 belongs to monoclinic with space group P2{/c, a = 1.04443(9) nm, b = 1.04823(7) nm, c = 1.28113(9) nm,/= 90. 953(8)°, V= 1.40239(19) nm3, Mr = 380.25, Z = 4

利用元素分析、红外光谱、核磁共振对其结构进行了表征，并通过X射线单晶衍射测定了1和2的晶体结构，二者均为具有分子内羰基氧原子配位的畸变三角双锥结构。1属于单斜品系，空间群P21/c， a=0.9842(2)nm，b=1.0923(8)nm，c=1.23948(11)nm，β=93.894(15)°，V=1.3294(4) nm^3，Mr=366.23，Z=4.2属于单斜晶系，空间群P21/c，a=1.04443(9)nm，b=1.04823 (7)nm，c=1.28113(9)nm，β=90.953(8)°，V=1.40239(19)nm^3，Mr=380.25，Z=4。

The Sn atoms are considered as five-coordinate and exist as distorted trigonal bipyramidal geometry in a one-dimensional chain.

合成化合物的中心Sn原子为五配位，构成以Sn为中心，扭曲的三角双锥构型，通过分子间氢键形成一维链状结构。

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。