构

It isconfirmed by ~1H NMR,~(13)C NMR and X-ray crystallographic analysis that complexes 60-63are monopyridine complexes and show distorted square pyramid geometries; complexes 64and 65 are bispyridine complexes and show pseudo-octahedral geometries, where twopyridine ligands are in cis arrangement and trans to the NHC and the benzylidene ligandrespectively, the bond length between ruthenium and pyridine ligand trans to the benzylideneligand is 16 pm longer than the bond length between ruthenium and pyridine ligand trans tothe NHC ligand.

1H NMR、~(13)C NMR及X射线单晶衍射分析证明，配合物60-63是单吡啶衍生物配位的钌卡宾配合物，具有变形的四方锥构型；配合物64、65为双吡啶衍生物配位的钌卡宾配合物，具有变形的八面体构型，其中两个顺式配位的吡啶衍生物分别处于氮杂环卡宾和苯亚甲基的反位，处于苯亚甲基反位的吡啶衍生物对应的钌-氮键长要比处于氮杂环卡宾反位的长出16 pm。

The Ni-W substrates were obtained by the method of rolling assisted biaxially textured substrates.

利用X射线衍射方法研究基带冷轧织构与W含量的关系，系统地研究了Ni-5Nw基带的再结晶织构。

In the second chapter, a rational synthetic route for enantiopure 2,2'-diethynyl-1,1 '-binaphthyl was established.

在论文的第二章，主要讨论了具有单一手性(R构型或构型的2，2'-二乙炔基-1，1'-联萘模板的合成。

Much better asymmetric induction was obtained with the catalysis of Ag /MAPs than with Ag /H〓-MAPs, and the binaphthyl backbone of R configuration was found to match to the S, S pyrrolidino group.

含有中心手性和轴手性两种手性因素的氮膦配体中，轴手性为R构型时，和中心手性S，S构型相匹配。

The separation of optical isomers of 2, 2'-dihydroxy-1, 1'-binaphthyl and 2, 2'-diamino-1, 1'-binaphthyl was studied by reversed-phase high performance liquid chromatography on a chiral stationary phase consisting of-hydroxypropyl-β-cyclodextrin (Cyclobond Ⅰ 2000 SP)using methanol/water as the mobile phase. The effects of mobile phase ratio, flow rate and column temperature on separation of optical isomers of DHBN and DABN were investigated.

在S-羟丙基－β-环糊精手性柱(CyclobondⅠ2000 SP)上用反相高效液相色谱法研究了2，2'-二氨基－1，1'-联萘和2，2'-二羟基－1，1'-联萘光学异构体的分离，考察了流动相组成、流速以及柱温等对联二萘胺和联二萘酚光学异构体分离的影响。

In this paper,- and (5)-2,2'-diethynyl-1,1'-binaphthyl with highly stable chiral configurations were employed as structural templates, and a new type of helical cyclophane compounds-3 and-3 were synthesized in enantiopure form by the introduction of benzyl sulfone through Sonogashira coupling reaction, followed by the treatment of disulfone with lithium diisopropylamide.

基於2，2'-二取代的联萘衍生物在手性构型上高度稳定的特点，分别从光学活性的-和-2，2'-二乙炔基-1，1'-联萘结构模板出发，通过Sonogashira偶连反应导入苄基碸，然后用二异丙基氨基锂处理制得的联萘二碸成功地合成了一种新的螺旋环芳分子－对映异构体-3和-3。

For Mn5 cluster, the most stable structure is trigonal bipyramid with spin magnetism of 3 μ, and Mn6 cluster has the most stable structure of ferromagnetic octahedron with spin magnetic moment of 16μ.

Mn6的最稳定构型为铁磁性的畸变八面体（磁矩为16，C(下标 4v)）。各种异构体虽然多重度不同，但每个原子的自旋极化度均在3以上。

For the first tin atom, it appears to be seven-coordinated with a distorted pentagonal bipyramid geometry, and the other is five-coordinated with a distorted trigonal bipyramidal geometry.

其中一类锡原子呈七配位畸变五角双锥构型，另一类呈七配位畸变三角双锥构型。

The crystal structures of two complexes have been determined by X-ray diffraction as: complex (11) is distorted octahedron configuration,α=15. 9002 (6), b=16. 2413 (5), c=23. 4401 (8)〓,β=90°, V=6053. 2 (4)〓, Z=8 and R=0.0531; complex (8) is trigonal bipyramidal configuration,α=9. 3476 (8), b=17. 4236 (13), c=9. 7836 (8)〓,β=91. 197 (3)°, V=1593. 1 (2)〓, Z=2 and R=0.0325, which shows that three secondary amine groups (N-1, N-2, N-3) of the glycosylamine ligand forms the equatorial plane, and the tertiary amine (N-4) and one Cl〓 are pointed on the apical positions.

分别对其进行X-ray衍射分析可以得出：配合物(11)的晶体数据为α=15.9002(6)，b=16.2413(5)，c=23.4401(8)〓，β=90°，V=6053.2(4)〓，Z=8 and R=0.0531，为畸变的八面体构型，而配合物(8)中，α=9.3476(8)，b=17.4236(13)，c=9.7836(8)〓，β=91.197(3)°，V=1593.1(2)〓，Z=2 andR=0.0325，为三角双锥构型，糖胺配体的三个氮原子（N-1，N-2，N-3）位于赤道平面上，而另外一个氮原子（N-4）和一个Cl〓位于轴向上。

The results showed that seedlings of Broussonetia papyrifera L. were well adapted to low drought stress. Medium and heavy drought for a long period did some harm to them, but after rewatering they could recover obviously.

结果表明：构树幼苗能够适应低度的干旱胁迫，长期的中度和重度干旱胁迫会对构树造成一定的伤害，但复水之后伤害会明显恢复。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷