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

using model chemistry: B3PW91/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 B3PW91/cc-pVTZ
 hartrees
Energy at 0K-491.616782
Energy at 298.15K-491.617551
HF Energy-491.616782
Nuclear repulsion energy79.985493
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 B3PW91/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' 3698 3556 242.03      
2 A' 2066 1987 709.77      
3 A' 888 854 2.73      
4 A' 644 619 327.20      
5 A' 462 444 84.88      
6 A" 494 476 2.15      

Unscaled Zero Point Vibrational Energy (zpe) 4126.0 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 3967.6 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 B3PW91/cc-pVTZ
ABC
36.20965 0.19682 0.19575

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.143 1.685 0.000
C2 0.000 0.494 0.000
S3 0.030 -1.075 0.000
H4 0.519 2.439 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.19912.76531.0039
C21.19911.56972.0132
S32.76531.56973.5483
H41.00392.01323.5483

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 174.255 C2 N1 H4 131.884
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.149      
2 C 0.084      
3 S -0.135      
4 H 0.200      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.112 1.701 0.000 2.032
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.220 2.976 0.000
y 2.976 -19.170 0.000
z 0.000 0.000 -25.058
Traceless
 xyz
x -2.107 2.976 0.000
y 2.976 5.469 0.000
z 0.000 0.000 -3.363
Polar
3z2-r2-6.725
x2-y2-5.051
xy2.976
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.231 -0.167 0.000
y -0.167 9.177 0.000
z 0.000 0.000 3.100


<r2> (average value of r2) Å2
<r2> 60.457
(<r2>)1/2 7.775

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at B3PW91/cc-pVTZ
 hartrees
Energy at 0K-491.612992
Energy at 298.15K 
HF Energy-491.612992
Nuclear repulsion energy80.018315
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 B3PW91/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 3911 3761 699.54      
2 Σ 2175 2092 738.32      
3 Σ 869 836 27.77      
4 Π 491 472 6.49      
4 Π 491 472 6.49      
5 Π 464i 446i 146.57      
5 Π 464i 446i 146.57      

Unscaled Zero Point Vibrational Energy (zpe) 3504.1 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 3369.5 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 B3PW91/cc-pVTZ
B
0.19441

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.672
C2 0.000 0.000 -0.496
S3 0.000 0.000 1.084
H4 0.000 0.000 -2.662

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.17572.75620.9896
C21.17571.58062.1653
S32.75621.58063.7459
H40.98962.16533.7459

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 B3PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.131      
2 C 0.094      
3 S -0.190      
4 H 0.227      


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 -3.047 3.047
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.028 0.000 0.000
y 0.000 -25.028 0.000
z 0.000 0.000 -15.748
Traceless
 xyz
x -4.640 0.000 0.000
y 0.000 -4.640 0.000
z 0.000 0.000 9.280
Polar
3z2-r218.560
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 8.985


<r2> (average value of r2) Å2
<r2> 60.640
(<r2>)1/2 7.787