| 24小時(shí)熱門(mén)版塊排行榜 |
| 3 | 1/1 | 返回列表 |
| 查看: 339 | 回復(fù): 2 | |||
freud1939木蟲(chóng) (正式寫(xiě)手)
|
[求助]
求幫助翻譯
|
|
In the 29Si NMR spectrum, only two signals were observed-one was determined to be due to Et3SiCl (against authentic sample), and the other, at 22.9 ppm, showed distinct satellites due to Pt coupling with J PtSi =1014 Hz. satellite一詞怎么理解? |
|
本帖內(nèi)容被屏蔽 |
鐵桿木蟲(chóng) (著名寫(xiě)手)
Farmer
|
In the 29Si NMR spectrum, only two signals were observed-one was determined to be due to Et3SiCl (against authentic sample), and the other, at 22.9 ppm, showed distinct satellites due to Pt coupling with J PtSi =1014 Hz. 這個(gè)可是絕對(duì)沒(méi)有寫(xiě)錯(cuò). 確實(shí)是satellite, 意思是衛(wèi)星峰. 這種衛(wèi)星峰在核磁或電子自旋共振中是常見(jiàn)的.產(chǎn)生的原因很多,比如如果做核磁時(shí)overspin就會(huì)在中心峰等距離的兩邊各有一個(gè)satellite peak; 還有這里的這種耦合作用.也會(huì)出現(xiàn)同樣的satellite peaks.因?yàn)榫嚯x相等,很容易區(qū)分. 電子自旋共振中也會(huì)出現(xiàn)這樣的情況,比如C13的satellite peaks. 你百度或Goggle 的話,就會(huì)知道. 比如: http://dict.cnki.net/h_52233586000.html |

| 3 | 1/1 | 返回列表 |
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 學(xué)碩化學(xué)工程與技術(shù),一志愿中國(guó)海洋大學(xué)320+求調(diào)劑 +7 | 披星河 2026-04-02 | 7/350 |
|
|---|---|---|---|---|
|
[考研] 理學(xué)07化學(xué) 303求調(diào)劑 +16 | 睿08 2026-03-27 | 17/850 |
|
|
[考研] 310求調(diào)劑 +12 | 爭(zhēng)取九點(diǎn)睡 2026-03-30 | 12/600 |
|
|
[考研] 311求調(diào)劑 +16 | zchqwer 2026-04-01 | 18/900 |
|
|
[考研] 一志愿北京科技,085601總分305求調(diào)劑 +9 | 半生瓜! 2026-04-01 | 11/550 |
|
|
[考博] 26年申博 +3 | staryer 2026-03-30 | 4/200 |
|
|
[考研] 285求調(diào)劑 +11 | AZMK 2026-04-01 | 11/550 |
|
|
[考研] 290求調(diào)劑 +5 | dfffsar 2026-03-29 | 5/250 |
|
|
[考研] 0710生物學(xué)考研調(diào)劑 +3 | 李多米lee. 2026-03-27 | 4/200 |
|
|
[考研] 英一數(shù)二生物信息學(xué)287分,本科生物科學(xué),求調(diào)劑 +3 | 碧水xyz 2026-03-29 | 4/200 |
|
|
[考研] 化學(xué)0703 調(diào)劑 306分 一志愿211 +12 | 26要上岸 2026-03-28 | 12/600 |
|
|
[考研] 求調(diào)劑,一志愿北林食品與營(yíng)養(yǎng)095500,301分,已過(guò)六級(jí),有科研經(jīng)歷 +4 | 快樂(lè)儲(chǔ)蓄罐 2026-03-31 | 4/200 |
|
|
[考研] 本2一志愿C9-333分,材料科學(xué)與工程,求調(diào)劑 +9 | 升升不降 2026-03-31 | 9/450 |
|
|
[考研] 一志愿浙江大學(xué)工科動(dòng)力工程370,數(shù)一121,專業(yè)課135,現(xiàn)在能去哪里 +3 | 080700調(diào)劑 2026-03-30 | 4/200 |
|
|
[考研]
|
gr哈哈哈 2026-03-28 | 3/150 |
|
|
[考研] 085602 化學(xué)工程專碩 340分求調(diào)劑 +4 | qianbai11 2026-03-29 | 4/200 |
|
|
[考研] 315調(diào)劑 +4 | 0860求調(diào)劑 2026-03-26 | 5/250 |
|
|
[考研] 調(diào)劑求收留 +7 | 果然有我 2026-03-26 | 7/350 |
|
|
[考研] 341求調(diào)劑 +7 | 青檸檬1 2026-03-26 | 7/350 |
|
|
[考研]
|
平樂(lè)樂(lè)樂(lè) 2026-03-26 | 4/200 |
|