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: CISD/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 CISD/6-31G*
 hartrees
Energy at 0K-491.933835
Energy at 298.15K-491.937576
HF Energy-491.544845
Nuclear repulsion energy94.243956
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 CISD/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' 3567 3302 0.41      
2 A' 3191 2954 28.72      
3 A' 2827 2617 1.33      
4 A' 1762 1632 132.48      
5 A' 1469 1360 25.73      
6 A' 1268 1174 30.68      
7 A' 992 918 53.16      
8 A' 758 702 65.28      
9 A' 448 415 20.30      
10 A" 1125 1041 5.76      
11 A" 769 712 79.55      
12 A" 369 342 45.28      

Unscaled Zero Point Vibrational Energy (zpe) 9272.8 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 8584.8 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 CISD/6-31G*
ABC
1.93089 0.20246 0.18325

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.237 1.043 0.000
C2 0.000 0.773 0.000
S3 -0.614 -0.878 0.000
H4 1.379 2.051 0.000
H5 -0.809 1.505 0.000
H6 0.595 -1.450 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4 H5 H6
N11.26582.66721.01822.09742.5738
C21.26581.76161.88001.09092.3015
S32.66721.76163.54262.39091.3378
H41.01821.88003.54262.25533.5875
H52.09741.09092.39092.25533.2717
H62.57382.30151.33783.58753.2717

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 122.686 N1 C2 H5 125.578
C2 N1 H4 110.329 C2 S3 H6 94.918
S3 C2 H5 111.735
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability