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hcmzj668

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[½»Á÷] Ôõô»ùÓÚSTEOM-DLPNO-CCSD¼ÆËãrISC

¸÷λͬÐÐÃÇ£¬Õý³£µÄtd-dft¼ÆËãrisc (»òisc)ÒÑ°´ÕÕorcaÊÖ²á³É¹¦£¬ÏÖÔÚÏë¼ÆËã»ùÓÚsteom-dlpno-ccsdµÄrisc£¬²»ÖªµÀ²½ÖèºÍÊäÈëÎļþÔõô±àд£¬ËìÀ´ÇóÖú¡£

ÊÖ²áÖÐдµÀ£º"theinput is similar to those discussed above. here esd(isc) should be used on themain input to indicate an intersystem crossing calculation, and the hessians should be provided byiscishessian and iscfshessian for the initial and final states, respectively. please note that the geometryused in the input file should correspond to that of the final state, specified through the iscfshessian flag. the relevantmatrix elements can be computed using any method available in orca.as a simple example, one could compute theexcited singlet and ground triplet geometries and hessians for anthracene usingtd-dft. then, compute the spin-orbit coupling (soc) matrix elements for aspecific triplet spin-sublevel using the same method (see the details below),potentially employing methods like casscf, mrci,steom-ccsd"

¼´£ºÏȵõ½gs£¬esºÍÈýÖØ̬µÄ½á¹¹ºÍhessians£¬È»ºó»ùÓÚgs½á¹¹×östeom-dlpno-ccsdϵĵ¥Ïß̬ºÍÈýÖØ̬µÄÄÜÁ¿ÒÔÓÃÓÚdele¡£
µ«ÊÇ£¬ÊÖ²áÖÐûÓиø³ö¾ßÌåµÄÊäÈëÀý×Ó£¬¾ÍÓеãÎÞ´ÓÏÂÊÖÁË£¬ÓÚÊDzúÉúÁËÈçÏÂÎÊÌâºÍÏë·¨£¬Âé·³¸÷λÀÏʦ°ï潨Òé¡£

1. ¡°gs£¬esºÍÈýÖØ̬µÄ½á¹¹ºÍhessians¡±¿ÉÒÔÓÃtd-dft·½·¨µÃµ½£¬ºóÖ±½ÓʹÓã¿

2. »ùÓÚÉÏÊöµÃµ½µÄgs½á¹¹£¬×östeom-dlpno-ccsd¼ÆËãµÃµ½s1ºÍt1µÄÄÜÁ¿£¬ÊÇÈçϽá¹û²»ÄØ£¿
steom-ccsdresults (singlets)
iroot= 1: 0.109392 au 2.977 ev 24008.9 cm**-1
steom-ccsd results (triplets)
iroot= 1: 0.089216 au 2.428 ev 19580.7 cm**-1
ËùÒÔdele for risc be : 19580.7 - 24008.9 = -4,428.2 cm-1?


3. ×îºó£¬×îÖØÒªµÄ²½Öè¼ÆËãrisc:
a)ÊÇÓÃÊÖ²áÖÐÌṩµÄÀý×Ó×÷ΪÊäÈëÎļþ£¨td-dft£©£¬½«ÉÏÊötd-dftµÃµ½µÄs1-t1½á¹¹ºÍhessian£¬ steom-dlpno-ccsdµÃµ½µÄÄÜÁ¿£¬Ð´ÈëÈçÏÂÊäÈëÎļþÖÐÀ´¼ÆË㣿
%tddft
nroots 5
sroot 1
troot 1
trootssl 0 1 -1 #t1µÄÈý¸öÑÇÄܼ¶
dosoc
%esd
iscishess "t1.hess"
iscfshess "s1.hess"
dele xxx # ÓÃsteom-dlpno-ccsd¼ÆËãµÃµ½µÄ
£¨Ó¦¸ÃÊÇ3¸öjob£¬´Ë´¦Ê¡ÂÔÁË£©

b)»¹ÊÇÖ±½ÓÓÃtd-dftµÃµ½µÄs1-t1½á¹¹ºÍhessian£¬°´ÕÕsteom-dlpno-ccsdµÄÊäÈëÎļþ¼ÆË㣿£¨ÕâÀï²»»áд£¬³¢ÊÔ×ÅдÁËÈçÏÂÊäÈëÎļþ£¬²»ÖªµÀ¶Ô»¹ÊÇ´í£©
!steom-dlpno-ccsddef2-tzvp def2-tzvp/c def2/j tightscf tightpno esd(isc)
%maxcore 5000
%scf
maxiter 7000
end
%mdci
nroots 3 #ÈçºÎ¿ØÖÆt1µÄ3¸öÑÇÄܼ¶ÄØ£¿£¨Ö±½Ó°´ÕÕÊÖ²áÖеÄtd-dft·½Ê½Ð´3¸öjob£¿£©
dorootwise true
othresh 0.001
vthresh 0.001
tcutpnosingles 1e-11
ndav 400
dostoresteom true
dosimpledens false
addl2term true
dtol 1e-5
dotriplet true
steomsoc true
end
%esd
iscishess "t1-opt.hess"
iscfshess "s1-opt.hess"
approxaden true # Õâ¸ö keyword»áÖ±½ÓÈ¥×Ô¶¯»ñÈ¡dele²»ÄØ£¿
usej true
doht false
temp 298.15
%pal nprocs 24
end
* xyzfile s0-opt.xyz 0 1
×îºó£¬Âé·³¸÷λÐмÒÁË£¬×£´ó¼ÒÉú»îÓä¿ì£¬¿ÆÑÐ˳Àû¡£
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hcmzj668

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2Â¥: originally posted by paramecium86 at 2024-11-25 13:53:13
orcaÓÃecd·½Ê½Ëãrisc¡£Õâ¸ö¼ÆËãÐèÒª·½·¨Ö§³Ö½âÎöÌݶȣ¨hessian£©ÄÇ»ù±¾¾ÍÏÞ¶¨×¡ÁËtd·½Ê½¡£È»ºóÈçÄãµÚÒ»ÖÖ·½Ê½Ëù˵ÄǾÍ×Ô¼ºËãÁËsteomϵÄdeleºÍsoc Ìîµ½ÊäÈëÎļþÀï¾Í¿ÉÒÔÁË¡£½üËƵ±×öÊÇÔÚsteom-dlpno-cc·½Ê½ÏµÄrisc ...

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steom-ccsdresults (singlets)
iroot= 1: 0.109392 au 2.977 ev 24008.9 cm**-1
steom-ccsd results (triplets)
iroot= 1: 0.089216 au 2.428 ev 19580.7 cm**-1

ËùÒÔDELE for risc be : 19580.7 - 24008.9 = -4,428.2 cm-1?
3Â¥2024-11-25 14:27:07
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3Â¥: Originally posted by hcmzj668 at 2024-11-25 01:27:07
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steom-ccsdresults (singlets)
iroot= 1: 0.109 ...

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11Â¥2024-11-26 11:53:04
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hcmzj668

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11Â¥: Originally posted by paramecium86 at 2024-11-26 11:53:04
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hcmzj668

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ÒýÓûØÌû:
13Â¥: Originally posted by paramecium86 at 2024-11-26 19:33:33
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