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Frequency run and transition state search

 

Sample directory: band/H2SlabFreqTS/

First run: H2 slab frequency calculation near minimum. Second run: transition state search, using as restart the results of the first run.

$ADFBIN/band << eor
Title H2 slab frequency calculation near minimum
Comment
    Optimized for speed / Accuracy low
    Basis very small
    Demonstrates the frequencies runtype
End

KSpace 2

Accuracy 4

screening
RMadel 9
end

Dependency Basis=1e-8

RunType
 Frequencies
End

GeoOpt
RestartSCF true
End

SCF
 Mixing 0.2
End

Convergence
 Degenerate default
End

DIIS
 NCycleDamp 0
 DiMix 0.5
End

Units
 Length Angstrom
 Angle Radian
End

ATOMS H 
:: TS coords
:: 0.408818   -0.059284    0.374229
:: 0.305357    0.059284   -0.374229
:: Local minimum coords:
-0.4 0 0.1
0.4 0 -0.1
End 
 
Lattice 
 2.645886    0      0 
     0   2.645886   0 
End 

AtomType H

DIRAC H
 1  0
 VALENCE
 1S 1
SubEnd

BasisFunctions
 1S   0.69
 
2P   1.25
SubEnd

FitFunctions
 1S   3.16
 1S   2.09
 1S   1.38
 2S   1.50
 2P   4.00
 2P   2.65
 2P   1.75
 3D   4.00
 3D   2.50
SubEnd

End


END INPUT
eor
mv RUNKF H2SlabFreq.runkf

rm Points

Here comes the second run where the Hessian (from the frequency run) is used to find the transtition state


$ADFBIN/band << eor
Title H2 slab TS search
Comment
    Optimized for speed / Accuracy low
    Basis very small
    Demonstrates the GeoOpt block
End

KSpace 2

Accuracy 5.0

screening
RMadel 9
end

Dependency Basis=1e-8

RunType
 TS
End

GeoOpt
Iterations 50
Converge Grad=1e-3
RestartSCF true
InitialHessian H2SlabFreq.runkf
End

SCF
 Mixing 0.2
End

Convergence
 Degenerate default
End

DIIS
 NCycleDamp 0
 DiMix 0.5
End

Units
 Length Angstrom
 Angle Radian
End

ATOMS H 
-0.4 0 0.1
0.4 0 -0.1
End 
 
Lattice 
 2.645886    0      0 
     0   2.645886   0 
End 

AtomType H

DIRAC H
 1  0
 VALENCE
 1S 1
SubEnd

BasisFunctions
 1S   0.69
2P   1.25
SubEnd

FitFunctions
 1S   3.16
 1S   2.09
 1S   1.38
 2S   1.50
 2P   4.00
 2P   2.65
 2P   1.75
 3D   4.00
 3D   2.50
SubEnd

End


END INPUT
eor

mv RUNKF H2SlabTS.runkf

rm Points
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