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: B2PLYP=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 B2PLYP=FULL/3-21G
 hartrees
Energy at 0K-490.019121
Energy at 298.15K-490.022722
HF Energy-489.926137
Nuclear repulsion energy91.758911
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 B2PLYP=FULL/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' 3334 3174 0.54 265.73 0.31 0.47
2 A' 3118 2968 29.00 109.08 0.48 0.65
3 A' 2484 2365 5.94 108.94 0.36 0.53
4 A' 1639 1560 127.29 2.34 0.23 0.38
5 A' 1375 1309 21.60 8.94 0.17 0.30
6 A' 1168 1112 86.34 20.40 0.75 0.86
7 A' 908 864 56.74 10.27 0.68 0.81
8 A' 611 582 101.61 12.60 0.32 0.48
9 A' 408 389 6.81 6.58 0.45 0.62
10 A" 1083 1031 1.74 0.50 0.75 0.86
11 A" 741 705 98.04 3.98 0.75 0.86
12 A" 371 353 56.84 8.15 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8618.9 cm-1
Scaled (by 0.952) Zero Point Vibrational Energy (zpe) 8205.2 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 B2PLYP=FULL/3-21G
ABC
1.81797 0.19139 0.17316

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.247 1.071 0.000
C2 0.000 0.830 0.000
S3 -0.625 -0.914 0.000
H4 1.483 2.077 0.000
H5 -0.842 1.520 0.000
H6 0.633 -1.460 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4 H5 H6
N11.27012.72851.03332.13692.6044
C21.27011.85221.93791.08902.3753
S32.72851.85223.65922.44341.3713
H41.03331.93793.65922.39123.6376
H52.13691.08902.44342.39123.3249
H62.60442.37531.37133.63763.3249

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 120.689 N1 C2 H5 129.702
C2 N1 H4 114.171 C2 S3 H6 93.735
S3 C2 H5 109.609
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability