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=FULL/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=FULL/3-21G*
 hartrees
Energy at 0K-489.506134
Energy at 298.15K-489.509861
HF Energy-489.164112
Nuclear repulsion energy93.485970
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=FULL/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3317 3144 1.87 201.66 0.31 0.47
2 A' 3095 2934 32.01 95.14 0.43 0.61
3 A' 2778 2634 0.37 87.56 0.34 0.51
4 A' 1593 1510 58.99 0.69 0.56 0.71
5 A' 1395 1322 17.14 9.04 0.19 0.31
6 A' 1227 1163 66.89 19.61 0.75 0.86
7 A' 975 925 51.86 5.90 0.71 0.83
8 A' 707 670 78.24 4.87 0.30 0.47
9 A' 440 417 16.09 2.95 0.49 0.66
10 A" 1102 1045 2.03 0.94 0.75 0.86
11 A" 762 722 89.20 5.34 0.75 0.86
12 A" 394 373 45.31 3.36 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8891.7 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 8429.3 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=FULL/3-21G*
ABC
1.85718 0.20069 0.18112

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/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 0.781 0.000
S3 -0.635 -0.869 0.000
H4 1.489 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
N11.29232.68021.03592.14052.5334
C21.29231.76871.94151.09352.2814
S32.68021.76873.59212.39161.3399
H41.03591.94153.59212.35523.5679
H52.14051.09352.39162.35523.2537
H62.53342.28141.33993.56793.2537

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 121.453 N1 C2 H5 127.394
C2 N1 H4 112.545 C2 S3 H6 93.402
S3 C2 H5 111.153
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability