| 查看: 1854 | 回复: 16 | |||
| 当前主题已经存档。 | |||
| 当前只显示满足指定条件的回帖,点击这里查看本话题的所有回帖 | |||
[交流]
【求助】一个反应的自由能垒会不会有可能为一个负值
|
|||
|
我最近研究了一个反应,发现它的过渡态比反应物的吉布斯自由能低,这个反应物是个中间体,想问问怎么回事?我IRC路径分析,也不错,想问问大家这能说明什么问题?多谢 [ Last edited by dongdong3881 on 2009-12-15 at 16:21 ] |
» 猜你喜欢
投稿chemical physical letters不送审?
已经有2人回复
南开大学物理学院张书辉副教授招收凝聚态物理理论方向博士生、硕士生
已经有22人回复
物理学I论文润色/翻译怎么收费?
已经有145人回复
杂志要求提供official language-editing certificate
已经有4人回复
深圳大学2026年秋博士招生-物理学-活性胶体方向-高永祥课题组
已经有16人回复
论物质与能量的统一模型及物理现象解释
已经有0人回复
基于基元I统一理论的数学相关应用推导
已经有0人回复
基元I统一理论:宇宙本质、层级演化与修炼文明的本源规律
已经有1人回复
基元I理论下三大核心空间现象精准推导与细节解析
已经有0人回复
基于基元 I 统一理论的反重力理论推导
已经有0人回复
基于基元I统一理论的量子力学本源推导
已经有1人回复
yongleli
木虫 (正式写手)
- 应助: 93 (初中生)
- 金币: 3769.1
- 散金: 369
- 红花: 24
- 帖子: 764
- 在线: 101.3小时
- 虫号: 303595
- 注册: 2006-12-03
- 专业: 原子和分子物理
4楼2009-09-01 22:28:28
yongleli
木虫 (正式写手)
- 应助: 93 (初中生)
- 金币: 3769.1
- 散金: 369
- 红花: 24
- 帖子: 764
- 在线: 101.3小时
- 虫号: 303595
- 注册: 2006-12-03
- 专业: 原子和分子物理
2楼2009-09-01 19:09:03
3楼2009-09-01 20:52:52
★ ★ ★ ★ ★ ★ ★ ★
xiaoyu888(金币+1):谢谢参与
xiaoyu888(金币+2,VIP+0):谢谢 9-2 08:25
mingdong(金币+5,VIP+0):感谢交流! 9-2 08:35
xiaoyu888(金币+1):谢谢参与
xiaoyu888(金币+2,VIP+0):谢谢 9-2 08:25
mingdong(金币+5,VIP+0):感谢交流! 9-2 08:35
|
如果过渡态的电子能量比中间体产物都要低的话,irc是怎么进行的呢? irc沿着过渡态的虚频方向,能量必然是上升的啊? 你说的是吉布斯自由能低,会不会电子能量是极大值? CCL邮件组上有这样一个例子 Sent to CCL by: "Andreas Uhe" [andiuhe..gmx.de] Dear CCLers, I hope you can help me explain the following result: Using Gaussian03 I calculated a transition state and the respective energetic minima connected by the transition state (I checked with an IRC calculation). As one expects the electronic energy of the TS is higher than the electronic energy of the minimum. The problem is that this is reversed for the Gibbs free energy obtained by frequency calculations: E Ezpe H G transition state -1624,071411 -1623,310413 -1623,269941 -1623,378578 following minimum -1624,075219 -1623,311174 -1623,270443 -1623,378231 Is there a chemical or physical explanation for this? Or is it an artefact of the calculations? How can I interpret this result? Thanks for your help! Andi -= This is automatically added to each message by the mailing script =- To recover the email address of the author of the message, please change the strange characters on the top line to the @ sign. You can also look up the X-Original-From: line in the mail header. E-mail to subscribers: CHEMISTRY@ccl.net or use: http://www.ccl.net/cgi-bin/ccl/send_ccl_message E-mail to administrators: CHEMISTRY-REQUEST@ccl.net or use http://www.ccl.net/cgi-bin/ccl/send_ccl_message Subscribe/Unsubscribe: http://www.ccl.net/chemistry/sub_unsub.shtml Before posting, check wait time at: http://www.ccl.net Job: http://www.ccl.net/jobs Conferences: http://server.ccl.net/chemistry/announcements/conferences/ Search Messages: http://www.ccl.net/chemistry/searchccl/index.shtml If your mail bounces from CCL with 5.7.1 error, check: http://www.ccl.net/spammers.txt RTFI: http://www.ccl.net/chemistry/aboutccl/instructions/ |
5楼2009-09-02 01:55:02













回复此楼