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: MP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-491.717802
Energy at 298.15K-491.721427
HF Energy-491.454387
Nuclear repulsion energy91.454737
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 MP2/6-31G
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' 3407 3260 1.80 233.74 0.31 0.48
2 A' 3141 3005 28.15 113.88 0.41 0.59
3 A' 2533 2424 8.68 124.43 0.38 0.55
4 A' 1602 1533 102.04 0.04 0.28 0.44
5 A' 1392 1332 15.11 9.90 0.17 0.29
6 A' 1180 1129 65.78 21.62 0.75 0.85
7 A' 912 872 60.06 8.95 0.69 0.82
8 A' 662 633 81.79 7.56 0.30 0.46
9 A' 425 406 13.72 5.11 0.46 0.63
10 A" 1085 1038 2.78 0.71 0.75 0.86
11 A" 747 714 110.15 4.20 0.75 0.86
12 A" 354 339 57.46 4.57 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8719.2 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 8342.6 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 MP2/6-31G
ABC
1.80659 0.19036 0.17222

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.270 1.067 0.000
C2 0.000 0.817 0.000
S3 -0.636 -0.906 0.000
H4 1.499 2.073 0.000
H5 -0.825 1.536 0.000
H6 0.614 -1.483 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4 H5 H6
N11.29432.74341.03152.14702.6331
C21.29431.83691.95561.09412.3807
S32.74341.83693.66522.44891.3767
H41.03151.95563.66522.38593.6644
H52.14701.09412.44892.38593.3441
H62.63312.38071.37673.66443.3441

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 121.393 N1 C2 H5 127.831
C2 N1 H4 113.978 C2 S3 H6 94.515
S3 C2 H5 110.776
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability