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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-491.274915
Energy at 298.15K-491.275409
HF Energy-491.179945
Nuclear repulsion energy77.778425
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' 3835 3835 436.60      
2 A' 2082 2082 506.67      
3 A' 781 781 10.02      
4 A' 460 460 372.38      
5 A' 415 415 40.85      
6 A" 417 417 8.77      

Unscaled Zero Point Vibrational Energy (zpe) 3995.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3995.5 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
84.05523 0.18422 0.18381

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 -0.144 1.720 0.000
C2 0.000 0.525 0.000
S3 0.047 -1.114 0.000
H4 0.249 2.638 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.20332.84000.9989
C21.20331.63952.1277
S32.84001.63953.7574
H40.99892.12773.7574

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 174.791 C2 N1 H4 149.982
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 -0.531      
2 C 0.065      
3 S 0.087      
4 H 0.380      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.859 3.236 0.000 3.348
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.308 2.321 0.000
y 2.321 -17.682 0.000
z 0.000 0.000 -25.471
Traceless
 xyz
x -3.731 2.321 0.000
y 2.321 7.707 0.000
z 0.000 0.000 -3.976
Polar
3z2-r2-7.952
x2-y2-7.625
xy2.321
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.055 -0.417 0.000
y -0.417 9.156 0.000
z 0.000 0.000 1.935


<r2> (average value of r2) Å2
<r2> 63.661
(<r2>)1/2 7.979

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at B2PLYP/6-31G
 hartrees
Energy at 0K-491.274088
Energy at 298.15K 
HF Energy-491.181136
Nuclear repulsion energy77.787646
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 3928 3928 678.58      
2 Σ 2128 2128 512.54      
3 Σ 766 766 25.00      
4 Π 413 413 8.35      
4 Π 413 413 8.35      
5 Π 348i 348i 238.97      
5 Π 348i 348i 238.97      

Unscaled Zero Point Vibrational Energy (zpe) 3476.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3476.5 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
B
0.18316

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 -1.719
C2 0.000 0.000 -0.527
S3 0.000 0.000 1.119
H4 0.000 0.000 -2.711

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.19212.83810.9924
C21.19211.64602.1844
S32.83811.64603.8304
H40.99242.18443.8304

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 -0.546      
2 C 0.084      
3 S 0.065      
4 H 0.396      


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 -3.798 3.798
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.463 0.000 0.000
y 0.000 -25.463 0.000
z 0.000 0.000 -16.369
Traceless
 xyz
x -4.547 0.000 0.000
y 0.000 -4.547 0.000
z 0.000 0.000 9.094
Polar
3z2-r218.188
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 1.934 0.000 0.000
y 0.000 1.934 0.000
z 0.000 0.000 8.972


<r2> (average value of r2) Å2
<r2> 63.749
(<r2>)1/2 7.984