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yan824

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ÒýÓûØÌû:
Originally posted by caipingl at 2011-01-29 03:11:20:
"b3lypºÍbp86Á½ÖÖ·½·¨ÔÚ¼ÆËã·Ö×ӵĶàÖØÌ¬Ê±Óкβ»Í¬£¿ÄÇÖÖËã¶àÖØÌ¬ÄܺÃһЩ£¿"
ûÓбȽϹý£¬²»Í¬Ìåϵ¿ÉÄܵõ½²»Í¬µÄ½á¹û£¬Ã»ÓÐɶ±ê×¼µÄ¡£b3lypÖ»ÊǺܳ£ÓðÕÁË£¬µ«b3lyp²»ÊÇÍòÄܵģ¬¿ÉÄܶÔÄãµÄÌåϵ¾Í²» ...

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3Â¥2011-01-29 10:32:57
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caipingl

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Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
"b3lypºÍbp86Á½ÖÖ·½·¨ÔÚ¼ÆËã·Ö×ӵĶàÖØÌ¬Ê±Óкβ»Í¬£¿ÄÇÖÖËã¶àÖØÌ¬ÄܺÃһЩ£¿"
ûÓбȽϹý£¬²»Í¬Ìåϵ¿ÉÄܵõ½²»Í¬µÄ½á¹û£¬Ã»ÓÐɶ±ê×¼µÄ¡£b3lypÖ»ÊǺܳ£ÓðÕÁË£¬µ«b3lyp²»ÊÇÍòÄܵģ¬¿ÉÄܶÔÄãµÄÌåϵ¾Í²»Ò»¶¨¾ÍºÏÊÊ£¬ÄãÐèÒª×Ô¼º±È½ÏÑ¡Ôñ¡£

¡°b3lyp*ÊÇʲô£¿ÓÃgaussian03ÄÜËãÂ𣿡±
b3lyp£ª: the amount of Hartree-Fock exchange is reduced from 20% to 15% in comparison with b3lyp.
G03Ó¦¸ÃÄÜË㣬Äã¿ÉÒÔ¶ÁÏÂmanual£¬ÓÃiopÖ¸¶¨

G09 manual£º
User-Defined Models. Gaussian 09 can use any model of the general form:
    P2EXHF + P1(P4EXSlater + P3¦¤Exnon-local) + P6EClocal + P5¦¤ECnon-local

The only available local exchange method is Slater (S), which should be used when only local exchange is desired. Any combinable non-local exchange functional and combinable correlation functional may be used (as listed previously).

The values of the six parameters are specified with various non-standard options to the program:

    *

      IOp(3/76=mmmmmnnnnn) sets P1 to mmmmm/10000 and P2 to nnnnn/10000. P1 is usually set to either 1.0 or 0.0, depending on whether an exchange functional is desired or not, and any scaling is accomplished using P3 and P4.
    *

      IOp(3/77=mmmmmnnnnn) sets P3 to mmmmm/10000 and P4 to nnnnn/10000.
    *

      IOp(3/78=mmmmmnnnnn) sets P5 to mmmmm/10000 and P6 to nnnnn/10000.

For example, IOp(3/76=1000005000) sets P1 to 1.0 and P2 to 0.5. Note that all values must be expressed using five digits, adding any necessary leading zeros.

Here is a route section specifying the functional corresponding to the B3LYP keyword:

#P BLYP IOp(3/76=1000002000) IOp(3/77=0720008000) IOp(3/78=0810010000)

The output file displays the values that are in use:

IExCor=  402 DFT=T Ex=B+HF Corr=LYP ExCW=0 ScaHFX=  0.200000
ScaDFX=  0.800000  0.720000  1.000000  0.810000

where the value of ScaHFX is P2, and the sequence of values given for ScaDFX are P4, P3, P6 and P5.

So for b3lyp*, it should be
#P BLYP IOp(3/76=1000001500) IOp(3/77=0720008000) IOp(3/78=0810010000)

And you can read this paper: Theor. Chem. Acc., 2001, 107, 48-55
2Â¥2011-01-29 03:11:20
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

yan824

ľ³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
2Â¥: Originally posted by caipingl at 2011-01-29 03:11:20:
"b3lypºÍbp86Á½ÖÖ·½·¨ÔÚ¼ÆËã·Ö×ӵĶàÖØÌ¬Ê±Óкβ»Í¬£¿ÄÇÖÖËã¶àÖØÌ¬ÄܺÃһЩ£¿"
ûÓбȽϹý£¬²»Í¬Ìåϵ¿ÉÄܵõ½²»Í¬µÄ½á¹û£¬Ã»ÓÐɶ±ê×¼µÄ¡£b3lypÖ»ÊǺܳ£ÓðÕÁË£¬µ«b3lyp²»ÊÇÍòÄܵģ¬¿ÉÄܶÔÄãµÄÌåϵ¾Í²» ...

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