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

using model chemistry: PBE1PBE/cc-pVTZ

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 PBE1PBE/cc-pVTZ
 hartrees
Energy at 0K-491.440052
Energy at 298.15K-491.440823
HF Energy-491.440052
Nuclear repulsion energy80.065764
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 PBE1PBE/cc-pVTZ
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' 3716 3571 256.37      
2 A' 2082 2001 731.00      
3 A' 896 861 3.35      
4 A' 638 613 321.23      
5 A' 463 445 98.43      
6 A" 499 479 1.87      

Unscaled Zero Point Vibrational Energy (zpe) 4146.3 cm-1
Scaled (by 0.961) Zero Point Vibrational Energy (zpe) 3984.6 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 PBE1PBE/cc-pVTZ
ABC
36.27695 0.19721 0.19615

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.139 1.683 0.000
C2 0.000 0.494 0.000
S3 0.028 -1.074 0.000
H4 0.526 2.436 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.19762.76251.0034
C21.19761.56822.0116
S32.76251.56823.5448
H41.00342.01163.5448

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 174.370 C2 N1 H4 131.915
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.152      
2 C 0.082      
3 S -0.138      
4 H 0.208      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.122 1.724 0.000 2.057
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.260 2.999 0.000
y 2.999 -19.178 0.000
z 0.000 0.000 -25.120
Traceless
 xyz
x -2.111 2.999 0.000
y 2.999 5.512 0.000
z 0.000 0.000 -3.401
Polar
3z2-r2-6.802
x2-y2-5.082
xy2.999
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.227 -0.153 0.000
y -0.153 9.131 0.000
z 0.000 0.000 3.100


<r2> (average value of r2) Å2
<r2> 60.388
(<r2>)1/2 7.771

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at PBE1PBE/cc-pVTZ
 hartrees
Energy at 0K-491.436473
Energy at 298.15K 
HF Energy-491.436473
Nuclear repulsion energy80.095219
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 PBE1PBE/cc-pVTZ
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 3925 3772 717.12      
2 Σ 2192 2107 751.40      
3 Σ 876 842 29.52      
4 Π 495 476 6.25      
4 Π 495 476 6.25      
5 Π 450i 433i 147.47      
5 Π 450i 433i 147.47      

Unscaled Zero Point Vibrational Energy (zpe) 3540.9 cm-1
Scaled (by 0.961) Zero Point Vibrational Energy (zpe) 3402.8 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 PBE1PBE/cc-pVTZ
B
0.19479

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.670
C2 0.000 0.000 -0.496
S3 0.000 0.000 1.083
H4 0.000 0.000 -2.660

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.17412.75340.9894
C21.17411.57932.1635
S32.75341.57933.7428
H40.98942.16353.7428

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 PBE1PBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.138      
2 C 0.096      
3 S -0.194      
4 H 0.236      


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 -3.081 3.081
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.088 0.000 0.000
y 0.000 -25.088 0.000
z 0.000 0.000 -15.728
Traceless
 xyz
x -4.680 0.000 0.000
y 0.000 -4.680 0.000
z 0.000 0.000 9.360
Polar
3z2-r218.720
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 3.080 0.000 0.000
y 0.000 3.080 0.000
z 0.000 0.000 8.936


<r2> (average value of r2) Å2
<r2> 60.571
(<r2>)1/2 7.783