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: QCISD/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-31+G**
 hartrees
Energy at 0K-492.023895
Energy at 298.15K-492.027582
HF Energy-491.558608
Nuclear repulsion energy93.904125
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 QCISD/6-31+G**
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' 3544 3351 1.40      
2 A' 3151 2979 27.19      
3 A' 2778 2626 0.13      
4 A' 1681 1589 146.42      
5 A' 1426 1349 15.87      
6 A' 1234 1167 20.65      
7 A' 972 919 57.97      
8 A' 742 702 66.32      
9 A' 436 412 21.32      
10 A" 1075 1016 2.68      
11 A" 738 698 89.84      
12 A" 350 331 35.45      

Unscaled Zero Point Vibrational Energy (zpe) 9063.3 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 8568.5 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 QCISD/6-31+G**
ABC
1.92371 0.20072 0.18176

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.249 1.045 0.000
C2 0.000 0.771 0.000
S3 -0.620 -0.879 0.000
H4 1.383 2.056 0.000
H5 -0.804 1.510 0.000
H6 0.590 -1.445 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4 H5 H6
N11.27882.68201.01992.10472.5755
C21.27881.76271.88771.09132.2936
S32.68201.76273.55312.39551.3359
H41.01991.88773.55312.25413.5895
H52.10471.09132.39552.25413.2669
H62.57552.29361.33593.58953.2669

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 122.934 N1 C2 H5 125.075
C2 N1 H4 109.905 C2 S3 H6 94.489
S3 C2 H5 111.991
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability