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【原创】有关GAUSSIAN ECP基组输入的探讨
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gongxd325 兄在【讨论】基组在关键词行输入和用GEN输入的差别 一文中 “ 按道理两种输入方法都是对所有元素采用了CEP-121G基组,但结果居然大不一样: 一个能正常完成另一个不能,而且基函数数目也不等” 如下文: 我稍微的修改gongxd325 兄的输入文件,以便让GAUSSIAN打印ECP,结果大出所料. 主要的说明见下(详细的情况大家可运行我的输入文件,再看输出结果) % chk=1 # B3LYP/GENECP OPT iop(3/24=10) iop(3/18=1) optcyc=200 Test1 0 1 Ag 0.000000 0.973585 0.000000 O -0.035321 -1.043566 0.000000 N 0.003644 -2.322076 0.000000 C 0.042843 -3.525907 0.000000 C O N 0 CEP-121G **** Ag 0 CEP-121G **** Ag 0 CEP-121G 输出结果: General basis read from cards: (5D, 7F) AO basis set in the form of general basis input: 1 0 SP 4 1.00 0.000000000000 0.6356000000D+02 -0.7310000762D-03 -0.4233999486D-02 0.6390000000D+01 0.1392736145D+01 0.6127599256D-01 0.5022000000D+01 -0.2873102300D+01 -0.3387459589D+00 0.1789000000D+01 0.2017361210D+01 0.1190831855D+01 SP 2 1.00 0.000000000000 0.2451000000D+01 -0.7253898667D-01 -0.4983001397D-01 0.1561000000D+00 0.1021357812D+01 0.1006516282D+01 SP 1 1.00 0.000000000000 0.5227000000D-01 0.1000000000D+01 0.1000000000D+01 SP 1 1.00 0.000000000000 0.6871000000D+00 0.1000000000D+01 0.1000000000D+01 D 3 1.00 0.000000000000 0.1464000000D+02 0.1362800547D-01 0.2693000000D+01 0.3726951495D+00 0.1233000000D+01 0.6812942732D+00 D 1 1.00 0.000000000000 0.5057000000D+00 0.1000000000D+01 D 1 1.00 0.000000000000 0.1900000000D+00 0.1000000000D+01 **** 2 0 SP 1 1.00 0.000000000000 0.8519000000D+01 0.1000000000D+01 0.1000000000D+01 SP 2 1.00 0.000000000000 0.2073000000D+01 0.1022977051D+00 0.4596910139D+00 0.6471000000D+00 0.9176052296D+00 0.6322148169D+00 SP 1 1.00 0.000000000000 0.2000000000D+00 0.1000000000D+01 0.1000000000D+01 **** 3 0 SP 1 1.00 0.000000000000 0.6403000000D+01 0.1000000000D+01 0.1000000000D+01 SP 2 1.00 0.000000000000 0.1580000000D+01 0.7214812145D-01 0.4403680140D+00 0.5094000000D+00 0.9416301983D+00 0.6459703426D+00 SP 1 1.00 0.000000000000 0.1623000000D+00 0.1000000000D+01 0.1000000000D+01 **** 4 0 SP 1 1.00 0.000000000000 0.4286000000D+01 0.1000000000D+01 0.1000000000D+01 SP 2 1.00 0.000000000000 0.1046000000D+01 0.1041255971D+00 0.4401530647D+00 0.3447000000D+00 0.9145110902D+00 0.6433037123D+00 SP 1 1.00 0.000000000000 0.1128000000D+00 0.1000000000D+01 0.1000000000D+01 **** =================================================================================================================================== Pseudopotential Parameters =================================================================================================================================== Center Atomic Valence Angular Power Coordinates Number Number Electrons Momentum of R Exponent Coefficient X Y Z =================================================================================================================================== 1 47 19 0.000000 1.839809 0.000000 F and up 1 9.0169600 -8.44669000 S - F 0 1.5174000 6.20634000 2 3.2308800 -56.82624000 2 4.8274700 92.40173000 P - F 0 1.2169900 3.75637000 2 3.1861500 -80.95335000 2 4.0534900 118.86801000 D - F 0 22.9402000 3.40895000 2 6.2662700 57.10513000 2 8 -0.066747 -1.972054 0.000000 No pseudopotential on this center. 3 7 0.006886 -4.388088 0.000000 No pseudopotential on this center. 4 6 0.080962 -6.662998 0.000000 No pseudopotential on this center. =================================================================================================================================== 只有Ag的ECP读入了 再看: % chk=2 # B3LYP/CEP-121G OPT iop(3/24=10) iop(3/18=1) optcyc=200 Test2 0 1 Ag 0.000000 0.973585 0.000000 O -0.035321 -1.043566 0.000000 N 0.003644 -2.322076 0.000000 C 0.042843 -3.525907 0.000000 输出文件: Standard basis: CEP-121G (6D, 10F) AO basis set in the form of general basis input: 1 0 SP 4 1.00 0.000000000000 0.6356000000D+02 -0.7310000762D-03 -0.4233999486D-02 0.6390000000D+01 0.1392736145D+01 0.6127599256D-01 0.5022000000D+01 -0.2873102300D+01 -0.3387459589D+00 0.1789000000D+01 0.2017361210D+01 0.1190831855D+01 SP 2 1.00 0.000000000000 0.2451000000D+01 -0.7253898667D-01 -0.4983001397D-01 0.1561000000D+00 0.1021357812D+01 0.1006516282D+01 SP 1 1.00 0.000000000000 0.5227000000D-01 0.1000000000D+01 0.1000000000D+01 SP 1 1.00 0.000000000000 0.6871000000D+00 0.1000000000D+01 0.1000000000D+01 D 3 1.00 0.000000000000 0.1464000000D+02 0.1362800547D-01 0.2693000000D+01 0.3726951495D+00 0.1233000000D+01 0.6812942732D+00 D 1 1.00 0.000000000000 0.5057000000D+00 0.1000000000D+01 D 1 1.00 0.000000000000 0.1900000000D+00 0.1000000000D+01 **** 2 0 SP 1 1.00 0.000000000000 0.8519000000D+01 0.1000000000D+01 0.1000000000D+01 SP 2 1.00 0.000000000000 0.2073000000D+01 0.1022977051D+00 0.4596910139D+00 0.6471000000D+00 0.9176052296D+00 0.6322148169D+00 SP 1 1.00 0.000000000000 0.2000000000D+00 0.1000000000D+01 0.1000000000D+01 **** 3 0 SP 1 1.00 0.000000000000 0.6403000000D+01 0.1000000000D+01 0.1000000000D+01 SP 2 1.00 0.000000000000 0.1580000000D+01 0.7214812145D-01 0.4403680140D+00 0.5094000000D+00 0.9416301983D+00 0.6459703426D+00 SP 1 1.00 0.000000000000 0.1623000000D+00 0.1000000000D+01 0.1000000000D+01 **** 4 0 SP 1 1.00 0.000000000000 0.4286000000D+01 0.1000000000D+01 0.1000000000D+01 SP 2 1.00 0.000000000000 0.1046000000D+01 0.1041255971D+00 0.4401530647D+00 0.3447000000D+00 0.9145110902D+00 0.6433037123D+00 SP 1 1.00 0.000000000000 0.1128000000D+00 0.1000000000D+01 0.1000000000D+01 **** =================================================================================================================================== Pseudopotential Parameters =================================================================================================================================== Center Atomic Valence Angular Power Coordinates Number Number Electrons Momentum of R Exponent Coefficient X Y Z =================================================================================================================================== 1 47 19 0.000000 1.839809 0.000000 F and up 1 9.0169600 -8.44669000 S - F 0 1.5174000 6.20634000 2 3.2308800 -56.82624000 2 4.8274700 92.40173000 P - F 0 1.2169900 3.75637000 2 3.1861500 -80.95335000 2 4.0534900 118.86801000 D - F 0 22.9402000 3.40895000 2 6.2662700 57.10513000 2 8 6 -0.066747 -1.972054 0.000000 P and up 1 16.1171800 -0.92550000 S - P 0 5.0534800 1.96069000 2 15.9533300 29.13442000 3 7 5 0.006886 -4.388088 0.000000 P and up 1 11.9968600 -0.91212000 S - P 0 3.8389500 1.93565000 2 11.7324700 21.73355000 4 6 4 0.080962 -6.662998 0.000000 P and up 1 8.5646800 -0.89371000 S - P 0 2.8149700 1.92926000 2 8.1129600 14.88199000 =================================================================================================================================== 可以看到,两种输入的价电子基组和Ag的ECP是完全相同,但是第二种输入文件,O N C的ECP是的确有的,所以第二情况应当是准确的。 因此,原因应当是非常简单明了,CEP赝势中即便是第二行元素也不是全电子的。 [ Last edited by yjcmwgk on 2009-11-13 at 20:28 ] |
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4楼2009-10-12 09:23:43
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yjcmwgk(金币+3,VIP+0):鼓励奖! 10-12 13:49
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的确,小女子给弄掉了 C N O 的ECP(起初以为CEP基组的第二行元素没有ECP,Lanl2DZ好像就是如此,是全电子基,ECP从第三行才有),真是献丑了哈。 Gaussian在自定义输入基组时的确默认为(5D,7F)纯函数. 为了确定一下,的确如此: 这是在EMSL下载的 F Cl Br三元素的ECP基组: ! LANL2DZ ECP EMSL Basis Set Exchange Library 10/11/09 7:43 PM ! Elements References ! -------- ---------- ! H - Ne: T. H. Dunning Jr. and P. J. Hay, in Methods of Electronic Structure ! Theory, Vol. 2, H. F. Schaefer III, ed., PLENUM PRESS (1977) ! Na - Hg: P. J. Hay and W. R. Wadt, J. Chem. Phys. 82, 270 (1985). ! P. J. Hay and W. R. Wadt, J. Chem. Phys. 82, 284 (1985). ! P. J. Hay and W. R. Wadt, J. Chem. Phys. 82, 299 (1985). ! **** F 0 S 7 1.00 9995.0000000 0.0011600 1506.0000000 0.0088700 350.3000000 0.0423800 104.1000000 0.1429290 34.8400000 0.3553720 12.2200000 0.4620850 4.3690000 0.1408480 S 2 1.00 12.2200000 -0.1484520 1.2080000 1.0552700 S 1 1.00 0.3634000 1.0000000 P 4 1.00 44.3600000 0.0208760 10.0800000 0.1301070 2.9960000 0.3961660 0.9383000 0.6204040 P 1 1.00 0.2733000 1.0000000 **** Cl 0 S 2 1.00 2.2310000 -0.4900589 0.4720000 1.2542684 S 1 1.00 0.1631000 1.0000000 P 2 1.00 6.2960000 -0.0635641 0.6333000 1.0141355 P 1 1.00 0.1819000 1.0000000 **** Br 0 S 2 1.00 1.1590000 -3.0378769 0.7107000 3.3703735 S 1 1.00 0.1905000 1.0000000 P 2 1.00 2.6910000 -0.1189800 0.4446000 1.0424471 P 1 1.00 0.1377000 1.0000000 **** ! Elements References ! -------- ---------- ! Na - Hg: P. J. Hay and W. R. Wadt, J. Chem. Phys. 82, 270 (1985). ! P. J. Hay and W. R. Wadt, J. Chem. Phys. 82, 284 (1985). ! P. J. Hay and W. R. Wadt, J. Chem. Phys. 82, 299 (1985). ! CL 0 CL-ECP 2 10 d potential 5 1 94.8130000 -10.0000000 2 165.6440000 66.2729170 2 30.8317000 -28.9685950 2 10.5841000 -12.8663370 2 3.7704000 -1.7102170 s-d potential 5 0 128.8391000 3.0000000 1 120.3786000 12.8528510 2 63.5622000 275.6723980 2 18.0695000 115.6777120 2 3.8142000 35.0606090 p-d potential 6 0 216.5263000 5.0000000 1 46.5723000 7.4794860 2 147.4685000 613.0320000 2 48.9869000 280.8006850 2 13.2096000 107.8788240 2 3.1831000 15.3439560 BR 0 BR-ECP 3 28 f potential 4 1 213.6143969 -28.0000000 2 41.0585380 -134.9268852 2 8.7086530 -41.9271913 2 2.6074661 -5.9336420 s-f potential 4 0 54.1980682 3.0000000 1 32.9053558 27.3430642 2 13.6744890 118.8028847 2 3.0341152 43.4354876 p-f potential 5 0 54.2563340 5.0000000 1 26.0095593 25.0504252 2 28.2012995 92.6157463 2 9.4341061 95.8249016 2 2.5321764 26.2684983 d-f potential 5 0 87.6328721 3.0000000 1 61.7373377 22.5533557 2 32.4385104 178.1241988 2 8.7537199 76.9924162 2 1.6633189 9.4818270 可以看到F没有ECP,因此F此时只是全电子基组。 而Cl和Br则有ECP,是价电子基组加上ECP。 参考文献正好也说明正是如此。 [ Last edited by 天空空 on 2009-10-12 at 11:05 ] |

5楼2009-10-12 09:52:11













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