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By comparison, multivalent transition metal halides have the best catalytic activity to the Mg-based hydrogen storage materials.
比较发现,多价态过渡族金属卤化物对镁基储氢材料具有最好的催化作用。
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Tergitol or PEG (0.5 g) was added to 10 mL of a 20% solution of alkyl halide in phenylacetonitrile, and then this solution was added to 10 mL of 60% aqueous potassium hydroxide.
Tergitol或聚乙二醇( 0.5 g )项增加了10毫升的 20 %的溶液中苯乙腈烷基卤化物,和那么这个解决办法是增加了10毫升的60 %水氢氧化钾。
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The reaction of the compound - 3 - triaiylstannyl -1,1 - diphenyl - 2 - propenyl - 1 -ol with ICl,Br2,I2 formed organotin halides ,which reacted with KOH to form organotin oxide or hydroxide.
首次以非碳环醇-3-三芳基锡基-1,1-二苯基-2-丙烯基-1-醇[Ph_2 CCH=CHSnAr_3]和卤素或拟卤素发生取代反应得到卤化物,并以此合成了氢氧化物、氧化物和配合物。
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According to the H NMRstudy, it was found that the protons on the cyclopentadienyl ring of 〓 were not splitted, but when one proton on the cyclopentadienylring was substituted by methyl, that is in〓 complexes, thefour protons on the ring were splitted into four groups,the 〓 between the onesignal and the others is large, the total splitting is over 2ppm. The splittings werealso affected by the halides linked with the titanium, they increase according to theorder of CI, Br, I. By the study of the 〓 Sn NMR, it is found that the chemicalshifts of 〓 are present in low field. It is assume that the large space strain causesthe angles of the tin linked with ligands deviate from the normal tetrahedral anglesresults low field shift for 〓Sn. And by MS study,there were no molecular ions for 〓 complexes in the spectra. However, for 〓 when X=CI,Br,NCO and Ar is tolyl or phenyl group,there were molecular ions,but theirabundances were very small,and no that for the iodide was found.
钛上的卤素对茂环氢的裂分也有影响,依〓,Br,I顺序,卤素对茂环氢的裂分依次加大;通过对〓的研究发现,以上这些化合物〓的化学位移都出现在低场,认为大的空间张力造成的锡的键角偏离正常的锡的四面体键角是造成〓化学位移出现在低场的原因;对这些化合物质谱的研究发现,〓系列化合物得不到分子离子峰,而〓系列的化合物,当X=〓,NCO和苯环上不带取代基或只带甲基时,则出现分子离子峰,但丰度很低,而相应的碘化物和其它化合物则没出现分子离子峰。
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Cycloalkylation of diethyl malonate and ethyl cyanoacetate with alkyl halide was investigated in the presence of toluene.
以甲苯为溶剂及带水剂,用粉末K2CO3代替常规使用的乙醇钠,在季铵盐和聚乙二醇混合相转移催化剂的存在下,含有活泼氢的丙二酸二乙酯和氰乙酸乙酯与二卤代物进行缩合反应,得到相应的环化物。
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Pure spathic silicon is obtained by deoxidizing or decompounding, after refining halide or hydride industrial silicon .
高纯多晶硅,是由工业硅的卤化物或氢化物经过有效地提纯以后,以还原法或热分解法制得。
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In this project, we have prepared conveniently Si-Mg 1,1-difunctional group reagents-α-silylvinyl Grignard reagents by hydromagnesiation of alkynylsilanes; Se-Br 1,1-difunctional group reagents-α-bromovinylselenides by hydrobromination of alkynylselenides; Sn-Br and Sn-I 1,1-difunctional group reagents by hydrozirconation of alkynylstannanes followed by halogenating reaction.
本项目通过炔基硅烷的镁氢化反应,方便地制得了Si-Mg 1,1-双官能团试剂-α-硅基烯基镁化物;通过炔基硒醚的溴氢化反应,方便地制得了Se-Br 1,1-双官能试剂-α-溴代烯基硒醚;通过炔基锡烷的锆氢化反应,继而卤代方便地制得了Sn-Br和Sn-I 1,1-双官能试剂。
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A theoretical study of Relativitic Effects and Electron Correlation Effects in Group 13 and Perioal 6 Hydrides and Halidiles.
用相对论效应和电子相关效应对周期表中第Ⅲ_A 族和第6周期氢化物和卤化物进行理论研究。
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Epoxidation, Hydroboration (Anti-Markovnikov Addition), Osmylation and Ozonolysis. Alkene Polymerization. Barbara Imperiali
氢化,HX 的加成(Markovnikov加成),卤化,环氧化,氢硼化(反-Markovnikov加成),臭氧化与臭氧化物分解,烯烃聚合。
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titanium tetrachloride:四氯化钛
起先由於将烷基铝(aluminium alkyl)与四氯化钛(titanium tetrachloride)在汽油中,於常温常压下通过氮气能合成齐格勒催化剂(ziegler catalyst). 1966年屋尔平(Vol'pin)等将一些不同的正电性金属烷基物(electropositive alkyl)与过渡金属之卤化物(halides)或卤化配位化合物氢化后之化合物反应,
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Hydrohalide:氢卤化物
Hydrate 水合物 | Hydrohalide 氢卤化物 | Hydrothermal 热水的,热液的
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antimony hydride:氢锑化物
"antimony halides","卤化锑" | "antimony hydride","氢锑化物" | "antimony mirror","锑镜"
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Halon:卤化物
比较有效的抑爆剂是磷酸铵或碳酸氢钠粉剂,卤化物(Halon)和水效果差些,但水和岩石粉常用于矿山抑爆. 抑爆剂装在高压缸中,缸中有60巴或120巴的氮气作推进剂,当缸的出口被雷管炸开,抑爆剂被高压的推进剂氮气喷入设备内进行抑爆;