配位体

College of Environment and Energy Engineering, Beijing Polytechnic University, Beijing 100022, China ）Abstract The phosphoryl N → O migration reaction and ester exchange reaction on phosphorus of phosphoserine with methyl alcohol involving hexa-coordinate phosphorus intermediate 3 had been studied by MNDO method.

用MNDO方法对磷酰化丝氨酸仿生化反应机理中所形成的六配位磷中间体(3)可能的3个异构体的结构及其反应活性进行了研究。

The phosphoryl N→O migration reaction and ester exchange reaction on phosphorus of phosphoserine with methyl alcohol involving hexa-coordinate phosphorus intermediate 3 had been studied by MNDO method. The three isomers structures of 3 were discussed in detail based on the calculation results.

谭波用MNDO方法对磷酰化丝氨酸仿生化反应机理中所形成的六配位磷中间体(3)可能的3个异构体的结构及其反应活性进行了研究。

Based on the coordinate bonding theory, a hydrophobic expansible polytetrafluoroethylene membrane was modified to make it hydrophilic.

采用配位键合理论对疏水性膨体聚四氟乙烯膜膜进行亲水改性，并对其用于水过滤过程的性能进行了研究。

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 Poaceae share a commom and special gametophytic self-incompatibility system, which is under the control of two unlinked loci: S and Z.

已报道自交不亲和禾本植物有着相同的自交不亲和系统，是一种特殊的配子体自交不亲和类型，和单一位点控制的自交不亲和性不同，其不亲和性由非连锁的两个复等位基因位点S和Z控制。

The Mo/W atom is coordinated by eight cyanides in an irregular square antiprism.

两个〓中的铜原子处于倒置中心，配位环境为拉长的八面体。

The coordination polyhedron around Ce3＋ is a distorted square antiprism, and the two independent molecules are connected by π-π stacking interactions to form a noncentrosymmetric dimer.

中心Ce3＋的配位多面体为变形双帽四方反棱柱，两个分子之间以π-π堆积连接，生成一个非中心对称的二聚体。

For this pyrolysis, cadmium acetate dihydrate and sulfur powder were used as the cadmium source and sulfur source, respectively.

以三辛基膦为单一配位溶剂，二水合乙酸福和硫粉为前驱体，用高温热解的方法制备CdS纳米棒。

A novel type of caged bicyclic phosphorous functionalized silsesquioxane was synthesized from caged bicyclic phosphorous quadridentate silicon complex in the presence of tetramethylammonium hy- droxide. The product was confirmed by FTIR, 29Si MAS NMR, MS and XRD spectra.

以双环笼状含磷四配位硅为前驱体，四甲基氢氧化铵为催化剂反应得到具有高度对称结构的双环笼状磷酸酯取代倍半硅氧烷，通过红外光谱，29Si固体核磁共振谱，质谱和X衍射光谱等手段确定了产物的结构和晶型。

The reactions of pyridine-2-carbaldehyde semicarbazone with transition metal Ni(II,Cosalts afford two pyridine-2-carbaldehyde semicarbazone transition metal compounds.

配合物[CoL2]·(ClO4)2·H2O(3)，分子式C14H18Cl2CoN8O11，Mr=604.19，属三斜晶系，空间群P-1，晶胞参数：a=9.984(3) A， b=11.082(4) A， c=12.196(5) A ，Dc=1.769Mg/m3，α=112.954(4)°，β=110.050(4)°，γ=94.017(3)°，V=1134.4(7) A3， Z=2，μ=1.067mm-1， F(000)=614，结构偏离因子R=0.0501 和ωR=0.1028，配合物(3)的中心金属离子采取六配位的变形八面体。

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。