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

using model chemistry: B3LYP/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 B3LYP/6-31G*
 hartrees
Energy at 0K-491.633518
Energy at 298.15K-491.634262
HF Energy-491.633518
Nuclear repulsion energy79.424594
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/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' 3675 3529 206.75      
2 A' 2067 1985 644.68      
3 A' 876 842 2.43      
4 A' 669 643 378.76      
5 A' 454 436 64.59      
6 A" 482 463 0.66      

Unscaled Zero Point Vibrational Energy (zpe) 4111.4 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 3948.2 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/6-31G*
ABC
34.95198 0.19410 0.19303

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.154 1.696 0.000
C2 0.000 0.498 0.000
S3 0.035 -1.082 0.000
H4 0.514 2.452 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.20802.78531.0090
C21.20801.58112.0202
S32.78531.58113.5666
H41.00902.02023.5666

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 173.938 C2 N1 H4 131.136
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.576      
2 C 0.278      
3 S -0.074      
4 H 0.372      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.234 1.906 0.000 2.271
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.147 3.206 0.000
y 3.206 -19.351 0.000
z 0.000 0.000 -24.979
Traceless
 xyz
x -1.983 3.206 0.000
y 3.206 5.213 0.000
z 0.000 0.000 -3.230
Polar
3z2-r2-6.460
x2-y2-4.797
xy3.206
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.490 -0.187 0.000
y -0.187 8.760 0.000
z 0.000 0.000 2.298


<r2> (average value of r2) Å2
<r2> 61.099
(<r2>)1/2 7.817

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at B3LYP/6-31G*
 hartrees
Energy at 0K-491.629059
Energy at 298.15K 
HF Energy-491.629059
Nuclear repulsion energy79.462318
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/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 3920 3764 689.15      
2 Σ 2190 2103 653.92      
3 Σ 852 818 30.25      
4 Π 478 459 4.10      
4 Π 478 459 4.10      
5 Π 494i 474i 180.14      
5 Π 494i 474i 180.14      

Unscaled Zero Point Vibrational Energy (zpe) 3464.6 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 3327.1 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/6-31G*
B
0.19166

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.684
C2 0.000 0.000 -0.501
S3 0.000 0.000 1.092
H4 0.000 0.000 -2.677

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.18292.77600.9933
C21.18291.59312.1762
S32.77601.59313.7693
H40.99332.17623.7693

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/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.564      
2 C 0.313      
3 S -0.120      
4 H 0.371      


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 -3.319 3.319
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.916 0.000 0.000
y 0.000 -24.916 0.000
z 0.000 0.000 -15.686
Traceless
 xyz
x -4.615 0.000 0.000
y 0.000 -4.615 0.000
z 0.000 0.000 9.230
Polar
3z2-r218.460
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 2.292 0.000 0.000
y 0.000 2.292 0.000
z 0.000 0.000 8.479


<r2> (average value of r2) Å2
<r2> 61.245
(<r2>)1/2 7.826