The molecular structures of 1,2-closo-P(2)B(10)H(10) (1) and 1,2-closo-As(2)B(10)H(10) (2) have been determined by gas electron diffraction and the results obtained compared with those from computation at the MP2/6-31G** level of theory. The level of agreement is good for...
Chemistry of 1,2,3-triazoles 来自 Springer 喜欢 0 阅读量: 19 作者:W Dehaen,VA Bakulev 摘要: When applied to the study of semiconducting nanosized particles, Fourier transform infrared spectroscopy allows the simultaneous analysis of the chemical reactions occurring at the nanoparticle surface and ...
单词追根溯源 >>>“chemistry”化学的前世今生●●○今天咱们来聊聊那个让全世界科学家为之疯狂,也让无数学生头秃的神秘学科——化学(Chemistry)。趣味记单词chem(词根-物质)+is(是)+try(尝试)物质是要不断尝试实验的-化学炼金术士的奇幻冒险话说在很久很久以前,有一群充满...
在这种情况下,已经开发了多种烯烃的区域发散式1,2-双官能团化反应,武汉大学阴国印课题组也报道了一例化学发散式1,1-双官能团化反应(图1A)。由于亲电试剂的丰度和稳定性更高,在还原反应条件下将两种不同的亲电试剂加成到烯烃上来实现1,2-区域发散式催化很有吸引力,但这仍是一项富有挑战性的任务(图1B),其挑战...
摘要: Reports on a compilation of the results of 114 interviews with personnel in industry, academia and government on chemical technology. Identification of the trends that affect chemistry, the need for chemists and the way chemists work.
The reaction of 12 with diethoxymethyl acetate gave the triazolo[4,3-b][1,2,4,5]tetrazine Total synthesis of ningalin A First isolated in 1997 by Fenical and Kang, the ningalins constitute a family of structurally interesting and biologically active natural marine products.62 Ningalin A (...
Fundamental to a student's understanding of organic chemistry is the ability to interpret and use its language, including molecules' names and other key terms. A learning gap exists in that students often struggle with organic nomenclature. Although many resources describe the rules for naming molecu...
Most heterocycles exhibit biological activity, including antitumor, anti-HIV, antibiotic, antidepressant, antiinflammatory, antiviral, antidiabetic, antimalarial, antimicrobial, antibacterial, antifungal, herbicidal, fungicidal, and insecticidal activities. Additionally, they have important applications in organic ...
有时候单词都认识,但就是翻译不出整句话, 原因就是单词的含义没有背全, 以下几个常见单词的另一面,你能认出几个! Picture 想象 I'm not a photographer, but I can picture you and me together. 我不是摄影师,但我可以想象我们在一起后的画面 ...
The alkoxide anion derived from 1-t-butyldimethylsilyl-4-hydroxymethyl-2-azetidinone (1) rearranged at −78°C into amide anion by N–O migration of the silyl protecting group. The occurrence of this intermediate was proved by quenching with benzyl bromide and phenethyl chloroformate, giving re...