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All results from a given calculation for NHCHSH (Methanimidothioic acid)

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-489.489807
Energy at 298.15K-489.493533
HF Energy-489.164080
Nuclear repulsion energy93.467436
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 MP2/3-21G*
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' 3316 3155 1.90 201.66 0.31 0.47
2 A' 3095 2944 32.06 95.12 0.43 0.61
3 A' 2780 2645 0.38 87.56 0.34 0.51
4 A' 1593 1515 58.80 0.67 0.57 0.72
5 A' 1395 1327 17.19 9.04 0.19 0.31
6 A' 1228 1168 66.96 19.59 0.75 0.86
7 A' 975 928 51.74 5.90 0.71 0.83
8 A' 707 673 78.40 4.90 0.30 0.47
9 A' 440 418 16.09 2.96 0.50 0.66
10 A" 1102 1048 2.05 0.94 0.75 0.86
11 A" 762 724 89.00 5.35 0.75 0.86
12 A" 393 374 45.55 3.35 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8892.2 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 8459.1 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 MP2/3-21G*
ABC
1.85657 0.20060 0.18104

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.271 1.015 0.000
C2 0.000 0.782 0.000
S3 -0.635 -0.870 0.000
H4 1.488 2.028 0.000
H5 -0.810 1.516 0.000
H6 0.585 -1.424 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4 H5 H6
N11.29252.68081.03602.14082.5341
C21.29251.76911.94151.09362.2819
S32.68081.76913.59262.39211.3399
H41.03601.94153.59262.35503.5687
H52.14081.09362.39212.35503.2543
H62.53412.28191.33993.56873.2543

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 121.452 N1 C2 H5 127.394
C2 N1 H4 112.518 C2 S3 H6 93.409
S3 C2 H5 111.154
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability