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´ó¼ÒºÃ£º¶ÔÓÚÕâ¸öÄÜ϶µÄÎÊÌâ ÎÒÊÇΪÁ˽â¾öÆÀίµÄÌáÎÊ ÔÚÎÒµÄÎÄÕÂÖÐ ÎÒ·Ö±ðд³öÁË HOMO(Alpha)ºÍ LUMO(Alpha)£¬»¹ÓÐHOMO(Beta)ºÍ LUMO(Beta)£¬ ÒÔ¼°ÏàÓ¦µÄÄÜ϶E=HOMO(Alpha)- LUMO(Alpha)£¬E=HOMO(Beta)- LUMO(Beta)¡£µ«ÊǶÔÓÚÓеØÌåϵֻÓÐHOMO(Alpha)ºÍ LUMO(Alpha)£¬¶øÃ»ÓÐHOMO(Beta)ºÍ LUMO(Beta)¡£ ÓÚÊÇÆÀί¾ÍÌá³öÒ»¸öÕâÑùµÄÎÊÌ⣬ Ï£ÍûÄܹ»°ï°ïæ ллÀ² ÎÊÌ⣺It is misleading and conceptionally wrong to define a HOMO-LUMO gap for the alpha-and beta-set of MO separately. For open-shell systems,the lowest unoccupied beta-MO is only slightly split in energy from ints alpha-MO counterpart due to spin-polarization. In a ROHF or ROKS formalism the Homo-lumo gap is always zero for open-shell systems. The authors should remove all the HOMO-LUMO gaps for the open-shell systems as it adds nothing to the understanding. ÆÀί˵ȥµô¿ª¿Ç²ãÌåϵµÄÄÜ϶£¬ÎÒ²»ÖªµÀÊÇʲôÒâ˼£¿ÊÇÈ¥µôHOMO(Beta)ºÍ LUMO(Beta)ÂȻºóͨ¹ýHOMO(Alpha)ºÍ LUMO(Alpha)À´¼ÆËãÄÜ϶£¿ |
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zhaideming(½ð±Ò+1): 2010-06-15 17:09:08
heyo_123(½ð±Ò+1):¹ÄÀø½»Á÷£¡£¡ 2010-06-16 08:46:01
zhaideming(½ð±Ò+1): 2010-06-15 17:09:08
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zhaideming(½ð±Ò+1): 2010-06-15 17:43:04
heyo_123(½ð±Ò+1):¹ÄÀø½»Á÷£¡£¡ 2010-06-16 08:46:06
zhaideming(½ð±Ò+1): 2010-06-15 17:43:04
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