查询词典 phosphine

Aimed at time and manpower consuming and contact to poisonous substances which are harmful to analyzers,the original method for analysis of trace chlorine in triphenyl phosphine was replaced by microcoulometry,based on times of testing comparisons.

针对齐鲁分公司第二化肥厂原有的三苯基膦氯含量的分析方法耗时、耗力且分析过程中接触的有毒物质较多、对分析人员伤害较大等问题，经过多次试验对照，用微库仑法代替原有的分析方法来测量三苯基膦中的微量氯。

In the photolysis of 9, phosphine dissociation is followed by addition of HCl yielding the neutral vinylidene complex Cl[Ru1]=C=CHC(CCl3)2 10, [Ru1] = Cp

当进行光裂解错合物的反应时，在加入氯化氢分子的状况下，产生一个中性的钌金属亚乙烯基错化合物Cl[Ru1]=C=CHC(CCl3)2 10， [Ru1] = Cp(PPh3Ru 并且伴随著一个三苯基磷分子的离去。

A highly regio- and stereoselective diboration of allenes was achieved with a catalytic amount of phosphine-free Pd complex and alkenyl or aryl iodide.

双硼试剂加成到1，2双烯的反应，传统上利用Pt金属错合物为催化剂，根据文献的报导，单独只使用Pd金属错合物是无法进行此反应的。

When phosphine≥〓mol is added to a solution ofL1M in 〓, a strong fluorescence species L1ML is formed and a new off-onprocess is completed.The reaction of L2 with 〓 gives macrocyclic luminescencecomplexes L2M by the π-π interaction of the anthryl groups in the two L2ligands.

对其光物理性能进行研究表明由L1到L1MCu(Ⅰ、Ag、Au荧光被完全猝灭呈现荧光on-off开关现象，金属络合物作为新的荧光分子开关体系以金属离子为受体中心在溶液中对三价磷中性客体呈现off-on开关现象。

Although the accumulative total data of before industrial business 8 months shows chemical fertilizer and pesticide trade performance are driving, but enter since September, of fertilizer custom duty go up tone, for be more than the awkwardness that beg, wait for raw material price plus crude oil go weak, caused price of azotic phosphate fertilizer directly leave harmonic company stop production substantially, future ability of gain of whole of industry of fertilizer of a few months remains to observe, no less, second half of the year begins the quickness of price of careless pleasant phosphine to dropped to affect the boom of integral pesticide industry directly.

虽然工业企业前8个月的累计数据表明化肥和农药行业表现强劲，但是进入9月份以来，肥料关税的上调，供大于求的尴尬，再加上原油等原材料价格的走弱，直接导致了氮磷肥价格的大幅度下调和企业停产，未来几个月化肥行业整体盈利能力有待观察，同样地，下半年开始草甘膦价格的急速下跌直接影响了整体农药行业的景气。

In the same time, water-soluble bidental phosphines ligand BISBIS sulfonated 2,2''-bis(diphenylphosphinomethyl-1,1''-biphenyl was synthesized, and water-soluble rhodium complex Cl was synthesized in situ. This complex which was used as catalysts to catalyze the hydrogenation of avermectin was also tested. Although the rhodium complex containing bidentate phosphine BISBIS showed a higher catalytic activity than one containing TPPDS, the selectivity for ivermectin was lower. How to improve the selectivity will be needed to studied in futur.

同时我们用磺化的2，2''-二-- 1，1''--联苯，以及它们的水溶性威尔金森型铑配合物和环辛二烯的阳离子铑配合物，在利用这些配合物作催化剂，考察它们在各种反应条件下对阿维菌素的选择加氢，由于反应条件以及复合催化剂体系的组成还需要进一步优化，虽然双齿膦配合物显示了较高的活性，然而选择性还有待进一步提高。

Bulky and electron-rich MOP-type phosphine ligand 2-ditertbutylphosphino-2'-isopropyloxy- 1,1'-binaphthyl (L1) shows good catalytic activity in palladium-catalyzed α-arylation of 1,3-dicarbonyl compounds.

富电子、大位阻MOP型烷基膦配体2-二叔丁基膦-2'-异丙氧基-1，1'-联萘(L1)在钯催化的1，3-二羰基化合物的α-芳基化反应中显示了较好的催化活性。

Bulky and electron-rich MOP-type phosphine ligand 2-ditertbutylphosphino-2 -isopropyloxy 1,1 -binaphthyl (L1) shows good catalytic activity in palladium-catalyzed α-arylation of 1,3-dicarbony compounds.

富电子、大位阻MOP型烷基膦配体2-二叔丁基膦－2'-异丙氧基－1，1'-联萘(L1)在钯催化的1，3-二羰基化合物的α-芳基化反应中显示了较好的催化活性。

A series of sulfonated poly(arylene thioether/ether phosphine oxide)s was prepared by direct polycondensation of sBFPPO and BFPPO with the diphenol-type or dimercapto-type monomers such as hydroquinone, bisphenol-A, 4,4'-biphenol, 4,4'-diphenol (6F), 1,5-dihydroxynaphthalene, 4,4'-dihydroxybiphenyl, and 4,4'-thiobisbenzenethiol, respectively.

将BFPPO与sBFPPO分别与多种二羟基或二巯基单体，如对苯二酚、双酚A、4，4'-二苯酚、双酚F、1，5'-二羟基萘、4， 4'-二羟基二苯硫醚和4，4'-二巯基二苯硫醚，直接共聚制备了一系列磺化聚芳醚三苯基氧膦，侧重考察了二羟基和二巯基单体结构单元对产物的耐氧化性能的影响。

Chapter 2 presents our studies on aromatic amide-derived phosphine applied to room temperature Suzuki cross-coupling of unactivated aryl chlorides with aryl boronic acids.

第二章主要研究了芳基酰胺衍生的膦配体在不活泼的氯代芳烃同芳基硼酸在室温下的Suzuki偶联反应中的应用。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。