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All results from a given calculation for HNCS (Isothiocyanic acid)

using model chemistry: PBEPBE/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
1 2 no C*V 1Σ

Conformer 1 (CS)

Jump to S1C2
Energy calculated at PBEPBE/6-31G
 hartrees
Energy at 0K-491.289331
Energy at 298.15K-491.289846
HF Energy-491.289331
Nuclear repulsion energy77.771071
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at PBEPBE/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3737 3685 339.40      
2 A' 2073 2045 462.46      
3 A' 795 784 6.61      
4 A' 466 459 325.97      
5 A' 419 413 38.91      
6 A" 426 421 7.77      

Unscaled Zero Point Vibrational Energy (zpe) 3958.2 cm-1
Scaled (by 0.9862) Zero Point Vibrational Energy (zpe) 3903.5 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at PBEPBE/6-31G
ABC
69.96336 0.18454 0.18405

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.150 1.721 0.000
C2 0.000 0.520 0.000
S3 0.048 -1.112 0.000
H4 0.288 2.628 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.21032.84021.0068
C21.21031.63302.1272
S32.84021.63303.7476
H41.00682.12723.7476

picture of Isothiocyanic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 S3 174.555 C2 N1 H4 147.105
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.509      
2 C 0.034      
3 S 0.113      
4 H 0.361      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.929 2.913 0.000 3.058
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.918 2.488 0.000
y 2.488 -17.704 0.000
z 0.000 0.000 -25.144
Traceless
 xyz
x -3.494 2.488 0.000
y 2.488 7.327 0.000
z 0.000 0.000 -3.833
Polar
3z2-r2-7.666
x2-y2-7.214
xy2.488
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.109 -0.381 0.000
y -0.381 8.925 0.000
z 0.000 0.000 1.979


<r2> (average value of r2) Å2
<r2> 63.440
(<r2>)1/2 7.965

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at PBEPBE/6-31G
 hartrees
Energy at 0K-491.288361
Energy at 298.15K 
HF Energy-491.288361
Nuclear repulsion energy77.819393
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at PBEPBE/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 3866 3813 609.07      
2 Σ 2128 2098 475.91      
3 Σ 786 775 16.70      
4 Π 424 418 6.65      
4 Π 424 418 6.65      
5 Π 336i 331i 227.89      
5 Π 336i 331i 227.89      

Unscaled Zero Point Vibrational Energy (zpe) 3477.4 cm-1
Scaled (by 0.9862) Zero Point Vibrational Energy (zpe) 3429.4 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at PBEPBE/6-31G
B
0.18348

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.719
C2 0.000 0.000 -0.521
S3 0.000 0.000 1.117
H4 0.000 0.000 -2.717

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.19822.83650.9978
C21.19821.63832.1960
S32.83651.63833.8343
H40.99782.19603.8343

picture of Isothiocyanic acid state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 S3 180.000 C2 N1 H4 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.521      
2 C 0.053      
3 S 0.094      
4 H 0.374      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -3.512 3.512
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.116 0.000 0.000
y 0.000 -25.116 0.000
z 0.000 0.000 -16.157
Traceless
 xyz
x -4.479 0.000 0.000
y 0.000 -4.479 0.000
z 0.000 0.000 8.958
Polar
3z2-r217.916
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.976 0.000 0.000
y 0.000 1.976 0.000
z 0.000 0.000 8.756


<r2> (average value of r2) Å2
<r2> 63.495
(<r2>)1/2 7.968