24小时热门版块排行榜    

CyRhmU.jpeg
南方科技大学公共卫生及应急管理学院2026级博士研究生招生报考通知(长期有效)
查看: 1451  |  回复: 3

coolrainbow

木虫 (著名写手)

未来国家冻凉

[交流] 纯计算不仅可以发JACS,还可以发Science已有3人参与

A Paramagnetic Bonding Mechanism for Diatomics in Strong Magnetic Fields



Kai K. Lange, E. I. Tellgren, M. R. Hoffmann and T. Helgaker Science 2012, 337, 327 (Paywall)

A new bonding mechanism
As chemists we are familiar with two types of strong bonds occurring between atoms, covalent and ionic. This paper shows that when very strong magnetic fields (of the order of 105 T) are applied, a third bonding mechanism arrises. Helgaker and co-workers term this perpendicular paramagnetic bonding.


Binding triplet H2
Whilst previous Hartree-Fock calculations have shown that the lowest triplet state of H2 becomes bound in strong magnetic fields, this investigation uses the recently developed LONDON code to demonstrate the same phenomena at the Full-CI level. Similar calculations (again, with a very strong magnetic field) on the triplet state of He2 show a considerable strengthening of the interaction between the constituent atoms.

The nature of this bonding
By examining the behaviour of the molecular orbitals under different orientations relative to the external magnetic field, the authors note a stabilisation of antibonding orbitals in the perpendicular orientation, leading to a new type of bonding interaction. Although the potential of a new chemical bonding mechanism is undoubtably exciting, the magnetic fields required are beyond those that can be currently generated in a lab. However, such fields are present on some stellar objects and the findings of this paper are likely to aid in the spectroscopy of such bodies.
回复此楼

» 收录本帖的淘帖专辑推荐

量化学习 石墨稀专栏

» 猜你喜欢

» 本主题相关价值贴推荐,对您同样有帮助:

技术博客:http://hi.baidu.com/coolrainbow/blog
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

yoghurt117

木虫 (正式写手)


小木虫: 金币+0.5, 给个红包,谢谢回帖
顶一下,教育我们这些搞计算的要做些实际的东西,做些对实验有益的真东西
I am 废Man! 把握住每一刻才是最重要的!
2楼2012-08-06 08:59:00
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
3楼2012-08-06 16:28:29
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

zhongrl898

木虫 (小有名气)


小木虫: 金币+0.5, 给个红包,谢谢回帖
M. R. Hoffmann 应该就行了吧
4楼2012-08-06 20:56:58
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 coolrainbow 的主题更新
普通表情 高级回复(可上传附件)
信息提示
请填处理意见