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

using model chemistry: mPW1PW91/cc-pVTZ

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 mPW1PW91/cc-pVTZ
 hartrees
Energy at 0K-491.680893
Energy at 298.15K-491.681667
HF Energy-491.680893
Nuclear repulsion energy80.106755
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 mPW1PW91/cc-pVTZ
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' 3721 3570 253.11      
2 A' 2081 1996 737.86      
3 A' 895 858 3.30      
4 A' 640 614 325.57      
5 A' 464 445 96.52      
6 A" 499 479 1.77      

Unscaled Zero Point Vibrational Energy (zpe) 4150.1 cm-1
Scaled (by 0.9592) Zero Point Vibrational Energy (zpe) 3980.8 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 mPW1PW91/cc-pVTZ
ABC
36.40723 0.19740 0.19633

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.137 1.683 0.000
C2 0.000 0.494 0.000
S3 0.027 -1.074 0.000
H4 0.526 2.434 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.19672.76121.0023
C21.19671.56772.0101
S32.76121.56773.5428
H41.00232.01013.5428

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 174.407 C2 N1 H4 131.958
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.145      
2 C 0.088      
3 S -0.141      
4 H 0.198      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.121 1.718 0.000 2.052
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.204 2.996 0.000
y 2.996 -19.168 0.000
z 0.000 0.000 -25.062
Traceless
 xyz
x -2.089 2.996 0.000
y 2.996 5.465 0.000
z 0.000 0.000 -3.377
Polar
3z2-r2-6.753
x2-y2-5.036
xy2.996
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.222 -0.150 0.000
y -0.150 9.126 0.000
z 0.000 0.000 3.094


<r2> (average value of r2) Å2
<r2> 60.317
(<r2>)1/2 7.766

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at mPW1PW91/cc-pVTZ
 hartrees
Energy at 0K-491.677323
Energy at 298.15K 
HF Energy-491.677323
Nuclear repulsion energy80.134410
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 mPW1PW91/cc-pVTZ
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 3932 3771 713.10      
2 Σ 2192 2102 760.36      
3 Σ 875 839 29.89      
4 Π 495 475 6.13      
4 Π 495 475 6.13      
5 Π 451i 433i 147.80      
5 Π 451i 433i 147.80      

Unscaled Zero Point Vibrational Energy (zpe) 3543.2 cm-1
Scaled (by 0.9592) Zero Point Vibrational Energy (zpe) 3398.7 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 mPW1PW91/cc-pVTZ
B
0.19497

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.670
C2 0.000 0.000 -0.496
S3 0.000 0.000 1.083
H4 0.000 0.000 -2.658

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.17322.75210.9882
C21.17321.57892.1614
S32.75211.57893.7404
H40.98822.16143.7404

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 mPW1PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.125      
2 C 0.098      
3 S -0.197      
4 H 0.224      


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 -3.078 3.078
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.032 0.000 0.000
y 0.000 -25.032 0.000
z 0.000 0.000 -15.720
Traceless
 xyz
x -4.656 0.000 0.000
y 0.000 -4.656 0.000
z 0.000 0.000 9.313
Polar
3z2-r218.625
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 3.074 0.000 0.000
y 0.000 3.074 0.000
z 0.000 0.000 8.930


<r2> (average value of r2) Å2
<r2> 60.502
(<r2>)1/2 7.778