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

using model chemistry: BLYP/3-21G*

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 BLYP/3-21G*
 hartrees
Energy at 0K-489.230321
Energy at 298.15K-489.230983
HF Energy-489.230321
Nuclear repulsion energy78.886990
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 BLYP/3-21G*
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' 3579 3556 273.60      
2 A' 2068 2055 424.97      
3 A' 837 832 6.32      
4 A' 514 511 140.61      
5 A' 457 454 240.54      
6 A" 501 498 0.38      

Unscaled Zero Point Vibrational Energy (zpe) 3978.3 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 3952.4 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 BLYP/3-21G*
ABC
56.35514 0.19052 0.18988

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.097 1.705 0.000
C2 0.000 0.501 0.000
S3 0.015 -1.094 0.000
H4 0.442 2.563 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.20782.80041.0139
C21.20781.59442.1095
S32.80041.59443.6818
H41.01392.10953.6818

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 175.932 C2 N1 H4 143.286
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.650      
2 C 0.271      
3 S 0.045      
4 H 0.334      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.078 2.631 0.000 2.843
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.427 2.823 0.000
y 2.823 -17.726 0.000
z 0.000 0.000 -24.967
Traceless
 xyz
x -3.080 2.823 0.000
y 2.823 6.971 0.000
z 0.000 0.000 -3.891
Polar
3z2-r2-7.781
x2-y2-6.701
xy2.823
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.055 -0.075 0.000
y -0.075 8.357 0.000
z 0.000 0.000 1.931


<r2> (average value of r2) Å2
<r2> 61.788
(<r2>)1/2 7.861

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at BLYP/3-21G*
 hartrees
Energy at 0K-489.229121
Energy at 298.15K 
HF Energy-489.229121
Nuclear repulsion energy78.926725
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 BLYP/3-21G*
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 3744 3720 607.03      
2 Σ 2135 2122 428.41      
3 Σ 826 821 19.98      
4 Π 507 504 0.49      
4 Π 507 504 0.49      
5 Π 322i 320i 213.11      
5 Π 322i 320i 213.11      

Unscaled Zero Point Vibrational Energy (zpe) 3538.1 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 3515.1 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 BLYP/3-21G*
B
0.18912

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/3-21G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.696
C2 0.000 0.000 -0.502
S3 0.000 0.000 1.099
H4 0.000 0.000 -2.697

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.19392.79511.0006
C21.19391.60122.1945
S32.79511.60123.7957
H41.00062.19453.7957

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 BLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.700      
2 C 0.331      
3 S 0.017      
4 H 0.351      


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 -3.459 3.459
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.927 0.000 0.000
y 0.000 -24.927 0.000
z 0.000 0.000 -15.460
Traceless
 xyz
x -4.734 0.000 0.000
y 0.000 -4.734 0.000
z 0.000 0.000 9.467
Polar
3z2-r218.934
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 1.924 0.000 0.000
y 0.000 1.924 0.000
z 0.000 0.000 8.108


<r2> (average value of r2) Å2
<r2> 61.845
(<r2>)1/2 7.864