配位

FT-IR and UV-vis spectra indicated the existence of tetrahedrally coordinated Ti atoms, which may act as active sites for epoxidation of olefin.

FT-IR和UV-vis结果说明该沸石骨架在存在四配位钛，从而有可能成为催化烯烃环氧化反应的活性中心。

Films are obtained via dip-coating process. The results show that the isolated and tetrahedrally coordinated Ti(superscript 4+) which formed Ti-O-Si bondon the pore inner surface of the framework.

实验结果表明，多孔薄膜中的钛离子形成了Si-O-Ti键的孤立四配位形态，使薄膜具有复合型钛离子的催化效果，并且有介孔结构。

The second type of motif,the zinc finger,consists of a peptide loop with either two cysteines and two histidines or four cysteines at the base of the loop that tetrahedrally co-ordinate a zinc ion.

另一种基序称为锌指，由一个肽环构成，在肽环底部是两个半胱氨酸和两个组氨酸或四个半胱氨酸，与锌离子配位形成面体。

The unusual feature of thiscompound can also be described in terms of infinite chains of B3O3 six-memberedrings sharing B atoms, which are all tetrahedrally coordinated by oxygen atoms.

例如，一维螺旋链结构的铀-有机配位聚合物[U3O732]-·H3O+，它的结构中存在由 U3O 构成的螺旋铀氧带。它也表现类似的铀酰发光。

The presence of the strong absorption band around 220nm in UV-Vis spectra and the appearance of the band around 960cm^(-1) in IR spectra demonstrate that the tetrahedrally coordinated Ti-atoms exist in the framework of Ti-containing zeolites.

UV-Vis光谱在220nm处的强吸收峰和骨架在960cm-1处的红外吸收峰均证明在沸石骨架中存在四配位Ti原子。

ITQ-26 (INSTITUTO DE TECNOLOGIA QUIMICA number 26) is a new crystalline microporous material with a framework of tetrahedral atoms connected by atoms capable of bridging the tetrahedral atoms, the tetrahedral atom framework being defined by the interconnections between the tetrahedrally coordinated atoms in its framework.

ITQ-26(INSTITUTO DE TECNOLOGA QUMICA number 26)是新的结晶微孔材料，其具有通过能够桥联四面体原子的原子连接的四面体原子骨架，该四面体原子骨架通过其骨架中四面体配位原子之间的相互连接来界定。

ITQ-27 (INSTITUTO DE TECNOLOGíA QUíMICA number 27) is a new crystalline microporous material with a framework of tetrahedral atoms connected by atoms capable of bridging the tetrahedral atoms, the tetrahedral atom framework being defined by the interconnections between the tetrahedrally coordinated atoms in its framework.

ITQ-27(INSTITUTO DE TECNOLOGíA QUíMICA number27)是新型微孔晶体材料，其具有通过能够桥联四面体原子的原子连接的四面体原子骨架，该四面体原子骨架通过其骨架中的四面体配位原子之间的相互连接而确定。

The leaching process of gold and silver by thiourea was described by electrochemistry and coordination chemistry theory.

同时用电化学和配位化学的理论对硫脲浸出金银的过程进行了描述。

According to element bonding parameter topological index and calculate topological index of 36 variety metal ions.

本文应用元素键参数拓扑指数计算了36种金属离子的拓扑指数，用于关联金属离子与氨三乙酸配位稳定常数的研究，得到了好的线性相关性。

The disorder of the thienyl ring and〓 groups in 11, 12 and the disorder of water in the packing of 14 may be responsible for their triboluminescent activities.Ⅲ. A dinuclear triboluminescent complex,〓(15)(where TTA=2- thenoyltrifluoroacetone, PyO=N-oxide pyridine), was synthesised and its crystal structure and triboluminescence spectrum were determined.

X-射线结构分析表明，四个配合物中的铕原子均呈现出八配位的四方反锥几何构型。11、12及13均为有对称中心结构配合物，11、12中的噻吩环及〓的无序以及配合物14晶胞中水分子的无序可能对它们的摩擦发光活性起了很重要的作用。

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。