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

using model chemistry: TPSSh/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 TPSSh/3-21G
 hartrees
Energy at 0K-489.162602
Energy at 298.15K-489.162982
HF Energy-489.162602
Nuclear repulsion energy78.224758
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 TPSSh/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' 3771 3653 559.81      
2 A' 2174 2106 448.50      
3 A' 799 774 14.32      
4 A' 519 503 0.67      
5 A' 199 192 311.00      
6 A" 525 509 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 3993.3 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 3868.7 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 TPSSh/3-21G
ABC
166.12793 0.18585 0.18564

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.041 1.710 0.000
C2 0.000 0.524 0.000
S3 0.000 -1.111 0.000
H4 0.282 2.657 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.18702.82141.0004
C21.18701.63482.1518
S32.82141.63483.7785
H41.00042.15183.7785

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 178.043 C2 N1 H4 159.209
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.755      
2 C 0.137      
3 S 0.232      
4 H 0.386      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.713 3.687 0.000 3.755
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.734 -0.045 0.000
y -0.045 8.157 0.000
z 0.000 0.000 1.691


<r2> (average value of r2) Å2
<r2> 62.963
(<r2>)1/2 7.935

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at TPSSh/3-21G
 hartrees
Energy at 0K-489.162545
Energy at 298.15K 
HF Energy-489.162545
Nuclear repulsion energy78.215292
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 TPSSh/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 3820 3701 689.71      
2 Σ 2196 2127 440.24      
3 Σ 793 768 20.83      
4 Π 529 513 0.16      
4 Π 529 513 0.16      
5 Π 105i 101i 227.70      
5 Π 105i 101i 227.70      

Unscaled Zero Point Vibrational Energy (zpe) 3828.6 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 3709.1 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 TPSSh/3-21G
B
0.18527

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.708
C2 0.000 0.000 -0.525
S3 0.000 0.000 1.113
H4 0.000 0.000 -2.704

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.18282.82050.9964
C21.18281.63782.1792
S32.82051.63783.8170
H40.99642.17923.8170

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 TPSSh/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.777      
2 C 0.163      
3 S 0.220      
4 H 0.394      


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 -3.983 3.983
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.690 0.000 0.000
y 0.000 1.690 0.000
z 0.000 0.000 8.055


<r2> (average value of r2) Å2
<r2> 63.010
(<r2>)1/2 7.938