return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for NHCHSH (Methanimidothioic 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'
Energy calculated at TPSSh/3-21G
 hartrees
Energy at 0K-490.334513
Energy at 298.15K-490.338115
HF Energy-490.334513
Nuclear repulsion energy91.835404
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' 3290 3188 1.34 274.48 0.31 0.47
2 A' 3080 2984 30.60 116.29 0.49 0.66
3 A' 2479 2402 7.26 111.75 0.36 0.53
4 A' 1631 1580 137.84 4.73 0.19 0.31
5 A' 1353 1310 23.53 8.72 0.17 0.29
6 A' 1162 1125 76.47 19.73 0.75 0.85
7 A' 898 870 55.43 9.94 0.68 0.81
8 A' 612 593 106.43 12.15 0.33 0.50
9 A' 402 390 7.42 5.92 0.46 0.63
10 A" 1059 1026 0.74 0.49 0.75 0.86
11 A" 732 710 102.12 4.25 0.75 0.86
12 A" 387 375 57.74 7.92 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8542.1 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 8275.6 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
1.80416 0.19244 0.17390

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 1.251 1.061 0.000
C2 0.000 0.828 0.000
S3 -0.627 -0.909 0.000
H4 1.482 2.074 0.000
H5 -0.844 1.522 0.000
H6 0.633 -1.454 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4 H5 H6
N11.27272.72181.03902.14512.5899
C21.27271.84701.93591.09242.3683
S32.72181.84703.65322.44101.3723
H41.03901.93593.65322.39013.6288
H52.14511.09242.44102.39013.3223
H62.58992.36831.37233.62883.3223

picture of Methanimidothioic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 S3 120.374 N1 C2 H5 130.024
C2 N1 H4 113.361 C2 S3 H6 93.557
S3 C2 H5 109.602
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 -0.516      
2 C -0.229      
3 S 0.101      
4 H 0.285      
5 H 0.241      
6 H 0.119      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.016 1.807 0.000 1.807
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 5.492 1.255 0.000
y 1.255 6.365 0.000
z 0.000 0.000 1.752


<r2> (average value of r2) Å2
<r2> 70.163
(<r2>)1/2 8.376