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

using model chemistry: B2PLYP/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 B2PLYP/6-31G*
 hartrees
Energy at 0K-491.385276
Energy at 298.15K-491.386016
HF Energy-491.243876
Nuclear repulsion energy79.363948
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 B2PLYP/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' 3704 3516 224.90      
2 A' 2056 1951 595.75      
3 A' 879 835 1.97      
4 A' 675 641 407.21      
5 A' 452 429 58.19      
6 A" 474 450 1.92      

Unscaled Zero Point Vibrational Energy (zpe) 4119.8 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 3910.5 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 B2PLYP/6-31G*
ABC
35.38946 0.19379 0.19274

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.173 1.696 0.000
C2 0.000 0.497 0.000
S3 0.046 -1.083 0.000
H4 0.478 2.465 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.21202.78751.0079
C21.21201.58002.0256
S32.78751.58003.5739
H41.00792.02563.5739

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 173.440 C2 N1 H4 131.484
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.574      
2 C 0.253      
3 S -0.063      
4 H 0.384      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.209 1.943 0.000 2.288
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.360 3.147 0.000
y 3.147 -19.193 0.000
z 0.000 0.000 -25.103
Traceless
 xyz
x -2.212 3.147 0.000
y 3.147 5.538 0.000
z 0.000 0.000 -3.326
Polar
3z2-r2-6.652
x2-y2-5.167
xy3.147
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.483 -0.287 0.000
y -0.287 8.971 0.000
z 0.000 0.000 2.283


<r2> (average value of r2) Å2
<r2> 61.218
(<r2>)1/2 7.824

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at B2PLYP/6-31G*
 hartrees
Energy at 0K-491.380579
Energy at 298.15K 
HF Energy-491.241181
Nuclear repulsion energy79.426045
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 B2PLYP/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 3931 3731 704.72      
2 Σ 2173 2063 609.83      
3 Σ 858 814 29.09      
4 Π 469 446 5.99      
4 Π 469 446 5.99      
5 Π 515i 489i 181.70      
5 Π 515i 489i 181.70      

Unscaled Zero Point Vibrational Energy (zpe) 3434.9 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 3260.4 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 B2PLYP/6-31G*
B
0.19151

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.686
C2 0.000 0.000 -0.499
S3 0.000 0.000 1.092
H4 0.000 0.000 -2.679

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.18612.77770.9933
C21.18611.59152.1794
S32.77771.59153.7709
H40.99332.17943.7709

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 B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.566      
2 C 0.290      
3 S -0.113      
4 H 0.390      


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 -3.358 3.358
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.052 0.000 0.000
y 0.000 -25.052 0.000
z 0.000 0.000 -15.631
Traceless
 xyz
x -4.710 0.000 0.000
y 0.000 -4.710 0.000
z 0.000 0.000 9.420
Polar
3z2-r218.841
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 2.278 0.000 0.000
y 0.000 2.278 0.000
z 0.000 0.000 8.666


<r2> (average value of r2) Å2
<r2> 61.329
(<r2>)1/2 7.831