lewis acids造句

• lewis acids and bases
  路易斯酸碱
• Acetylation between alcohol and benzoyl oxide was carried out using znbr2 as a lewis acid catalyst in solvent-free condition . some structures were characterized by nmr and ir
  以溴化锌为催化剂，在无溶剂条件下实现了醇与苯甲酸酐的酰化反应，部分产物经nmr和ir表征。
• Acetylation between alcohol and benzoyl oxide was carried out using znbr2 as a lewis acid catalyst in solvent-free condition . some structures were characterized by nmr and ir
  摘要以溴化锌为催化剂，在无溶剂条件下实现了醇与苯甲酸酐的酰化反应，部分产物经nmr和ir表征。
• Chelating and detoxification metal ions are also the focus of many researchers . according to lewis soft-hard acid-base theory, aluminum is the hardest trivancy lewis acid, and polyphenols are lewis base theoretically, they can combine together tightly
  根据lewis软硬酸碱理论，铝是三价金属离子中最硬的lewis酸，而多酚类却是lewis碱（电子对供体，亲核体），两者可以很好的结合。
• They were used as efficient lewis acid catalysts for esterification reactions of carboxylic acids with alcohols to afford corresponding saturated esters with 87 % ~ 98 % yields and unsaturated and tertiary ones with 90 % ~ 94 % and 54 % ~ 68 % yields, respectively
  结果表明，该有机锡化合物是合成酯的优良催化剂，产品收率高，饱和一元羧酸酯的收率为87%~98%，对不饱和羧酸酯和空间位阻大的叔醇酯也能得到较满意的收率，分别为90%~94%和54%~68%。
• The enhanced photoconductive effect from small amount of tnf facilitates the preparations of new organic photoconductive devices under the drive of low fields . in the fourth chapter, inclpc nanoparticles embedded in poly ( n-vinylcarbzaole ) ( pvk ) were prepared successfully by dissolving inclpc in aprotic organic solvent / lewis acid with great concentration for the formation of electron donor-acceptor complexes, i . e ., the method of complexation-mediated solubilization . the fabricated inclpc nanoparticles were characterized by means of uv / vis absorption, x-ray diffraction pattern, and tem
  论文的最后一章中，我们合成了具有较好的电子传输性能的化合物’一二苯基四竣酸花酚亚胺（ddp）；研究了其溶解性、热稳定性、晶体结构、红外光谱、紫外吸收光谱和蒸镀薄膜的属性，并用量子化学计算方法模拟其单分子的空间构型；载流子迁移率测试的结果约为ix10“、m’v”’?s“’。