return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for NHCHSH (Methanimidothioic acid)

using model chemistry: MP4/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/6-311+G(3df,2p)
 hartrees
Energy at 0K-492.213362
Energy at 298.15K-492.217041
HF Energy-491.617209
Nuclear repulsion energy94.037921
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 MP4/6-311+G(3df,2p)
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' 3475 3279        
2 A' 3068 2895        
3 A' 2696 2544        
4 A' 1603 1513        
5 A' 1370 1293        
6 A' 1196 1129        
7 A' 931 879        
8 A' 722 681        
9 A' 421 398        
10 A" 1045 986        
11 A" 724 683        
12 A" 379 358        

Unscaled Zero Point Vibrational Energy (zpe) 8814.4 cm-1
Scaled (by 0.9438) Zero Point Vibrational Energy (zpe) 8319.0 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 MP4/6-311+G(3df,2p)
ABC
1.91655 0.20190 0.18266

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.250 1.037 0.000
C2 0.000 0.769 0.000
S3 -0.621 -0.874 0.000
H4 1.386 2.050 0.000
H5 -0.805 1.510 0.000
H6 0.595 -1.443 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4 H5 H6
N11.27902.67491.02142.10872.5657
C21.27901.75621.88761.09432.2905
S32.67491.75623.54652.39171.3423
H41.02141.88763.54652.25623.5815
H52.10871.09432.39172.25623.2685
H62.56572.29051.34233.58153.2685

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 122.828 N1 C2 H5 125.192
C2 N1 H4 109.777 C2 S3 H6 94.385
S3 C2 H5 111.980
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability