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

using model chemistry: B3LYP/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 B3LYP/cc-pVTZ
 hartrees
Energy at 0K-491.708870
Energy at 298.15K-491.709637
HF Energy-491.708870
Nuclear repulsion energy79.854873
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 B3LYP/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' 3674 3551 233.31      
2 A' 2047 1979 702.39      
3 A' 876 847 2.29      
4 A' 652 630 341.07      
5 A' 461 446 76.77      
6 A" 492 475 2.07      

Unscaled Zero Point Vibrational Energy (zpe) 4101.1 cm-1
Scaled (by 0.9666) Zero Point Vibrational Energy (zpe) 3964.1 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 B3LYP/cc-pVTZ
ABC
36.20340 0.19614 0.19508

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.142 1.687 0.000
C2 0.000 0.496 0.000
S3 0.030 -1.077 0.000
H4 0.521 2.442 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.19962.76981.0044
C21.19961.57362.0143
S32.76981.57363.5533
H41.00442.01433.5533

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 174.276 C2 N1 H4 131.907
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.139      
2 C 0.054      
3 S -0.118      
4 H 0.203      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.115 1.692 0.000 2.026
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.390 2.980 0.000
y 2.980 -19.442 0.000
z 0.000 0.000 -25.225
Traceless
 xyz
x -2.056 2.980 0.000
y 2.980 5.365 0.000
z 0.000 0.000 -3.309
Polar
3z2-r2-6.618
x2-y2-4.948
xy2.980
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.227 -0.156 0.000
y -0.156 9.212 0.000
z 0.000 0.000 3.093


<r2> (average value of r2) Å2
<r2> 60.739
(<r2>)1/2 7.794

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at B3LYP/cc-pVTZ
 hartrees
Energy at 0K-491.704963
Energy at 298.15K 
HF Energy-491.704963
Nuclear repulsion energy79.880696
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 B3LYP/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 3894 3764 701.76      
2 Σ 2159 2087 732.28      
3 Σ 854 826 28.60      
4 Π 488 472 6.33      
4 Π 488 472 6.33      
5 Π 472i 456i 147.55      
5 Π 472i 456i 147.55      

Unscaled Zero Point Vibrational Energy (zpe) 3469.8 cm-1
Scaled (by 0.9666) Zero Point Vibrational Energy (zpe) 3353.9 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 B3LYP/cc-pVTZ
B
0.19370

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.675
C2 0.000 0.000 -0.499
S3 0.000 0.000 1.086
H4 0.000 0.000 -2.664

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.17592.76110.9897
C21.17591.58512.1656
S32.76111.58513.7508
H40.98972.16563.7508

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 B3LYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.125      
2 C 0.070      
3 S -0.174      
4 H 0.229      


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 -3.051 3.051
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.194 0.000 0.000
y 0.000 -25.194 0.000
z 0.000 0.000 -15.999
Traceless
 xyz
x -4.598 0.000 0.000
y 0.000 -4.598 0.000
z 0.000 0.000 9.195
Polar
3z2-r218.390
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 3.074 0.000 0.000
y 0.000 3.074 0.000
z 0.000 0.000 9.005


<r2> (average value of r2) Å2
<r2> 60.928
(<r2>)1/2 7.806