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

using model chemistry: MP2/CEP-121G*

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/CEP-121G*
 hartrees
Energy at 0K-27.252173
Energy at 298.15K-27.255873
HF Energy-26.828281
Nuclear repulsion energy35.190941
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/CEP-121G*
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' 3468 3304 1.03 185.39 0.32 0.48
2 A' 3115 2968 30.93 116.43 0.38 0.55
3 A' 2711 2583 0.67 103.94 0.28 0.44
4 A' 1598 1522 124.06 8.65 0.22 0.36
5 A' 1397 1331 21.75 8.50 0.10 0.17
6 A' 1237 1179 25.56 14.41 0.59 0.75
7 A' 949 904 49.27 4.65 0.56 0.72
8 A' 743 708 72.75 3.24 0.17 0.30
9 A' 430 409 21.05 3.08 0.42 0.59
10 A" 1050 1001 2.27 0.63 0.75 0.86
11 A" 744 709 91.53 3.12 0.75 0.86
12 A" 378 360 42.90 0.94 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8908.8 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 8488.3 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/CEP-121G*
ABC
1.85949 0.19996 0.18054

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.268 1.029 0.000
C2 0.000 0.779 0.000
S3 -0.629 -0.876 0.000
H4 1.400 2.048 0.000
H5 -0.803 1.527 0.000
H6 0.600 -1.440 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4 H5 H6
N11.29222.68841.02782.12962.5576
C21.29221.77071.88941.09692.2988
S32.68841.77073.55922.40881.3524
H41.02781.88943.55922.26353.5787
H52.12961.09692.40882.26353.2815
H62.55762.29881.35243.57873.2815

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 121.962 N1 C2 H5 125.902
C2 N1 H4 108.521 C2 S3 H6 93.829
S3 C2 H5 112.136
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability