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 C3H6S (Thiirane, methyl-)

using model chemistry: HF/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/3-21G
 hartrees
Energy at 0K-511.982898
Energy at 298.15K-511.989611
Nuclear repulsion energy156.843653
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 HF/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 3444 3119 0.34      
2 A 3378 3059 2.94      
3 A 3343 3028 3.87      
4 A 3287 2976 10.62      
5 A 3260 2952 11.14      
6 A 3195 2893 22.97      
7 A 1664 1507 10.28      
8 A 1655 1498 5.62      
9 A 1624 1471 9.81      
10 A 1585 1436 6.60      
11 A 1507 1365 2.66      
12 A 1323 1198 3.81      
13 A 1249 1131 10.20      
14 A 1208 1094 37.94      
15 A 1173 1062 8.56      
16 A 1109 1005 1.46      
17 A 1043 944 7.71      
18 A 944 855 1.92      
19 A 926 838 4.36      
20 A 603 546 1.63      
21 A 538 487 47.23      
22 A 426 386 0.41      
23 A 312 283 3.21      
24 A 238 216 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 19516.1 cm-1
Scaled (by 0.9056) Zero Point Vibrational Energy (zpe) 17673.8 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 HF/3-21G
ABC
0.37030 0.15590 0.12546

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.763 -0.386 -0.181
C2 -0.559 0.198 0.513
C3 0.260 1.201 -0.169
S4 1.152 -0.511 -0.047
H5 -1.587 -0.476 -1.244
H6 -1.991 -1.368 0.211
H7 -2.626 0.254 -0.020
H8 -0.614 0.265 1.581
H9 0.008 1.465 -1.175
H10 0.750 1.954 0.413

Atom - Atom Distances (Å)
  C1 C2 C3 S4 H5 H6 H7 H8 H9 H10
C11.50802.57142.92081.08191.08221.08652.20232.74833.4848
C21.50801.46341.93452.14532.14402.13631.07152.18612.1923
C32.57141.46341.93412.71713.43713.04172.16851.07081.0700
S42.92081.93451.93412.98923.26783.85512.52432.54702.5397
H51.08192.14532.71712.98921.75451.76463.07922.51383.7568
H61.08222.14403.43713.26781.75451.75772.53813.73494.3119
H71.08652.13633.04173.85511.76461.75772.57203.12153.8050
H82.20231.07152.16852.52433.07922.53812.57203.07022.4655
H92.74832.18611.07082.54702.51383.73493.12153.07021.8194
H103.48482.19231.07002.53973.75684.31193.80502.46551.8194

picture of Thiirane, methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 119.848 C1 C2 S4 115.529
C1 C2 H8 116.227 C2 C1 H5 110.780
C2 C1 H6 110.655 C2 C1 H7 109.787
C2 C3 S4 67.789 C2 C3 H9 118.401
C2 C3 H10 119.033 C2 S4 C3 44.453
C3 C2 S4 67.757 C3 C2 H8 116.774
S4 C2 H8 110.940 S4 C3 H9 112.718
S4 C3 H10 112.206 H5 C1 H6 108.335
H5 C1 H7 108.934 H6 C1 H7 108.288
H9 C3 H10 116.393
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.566 -0.221   -0.361
2 C -0.469 0.081   0.079
3 C -0.562 -0.268   -0.385
4 S 0.082 -0.286   -0.268
5 H 0.230 0.081   0.123
6 H 0.232 0.094   0.134
7 H 0.218 0.071   0.116
8 H 0.285 0.105   0.131
9 H 0.273 0.184   0.231
10 H 0.277 0.158   0.200


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.415 1.794 0.307 3.024
CHELPG -2.422 1.832 0.349 3.056
AIM        
ESP -2.462 1.834 0.355 3.090


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.990 1.893 -0.351
y 1.893 -32.316 -0.473
z -0.351 -0.473 -32.861
Traceless
 xyz
x -2.401 1.893 -0.351
y 1.893 1.609 -0.473
z -0.351 -0.473 0.792
Polar
3z2-r21.584
x2-y2-2.674
xy1.893
xz-0.351
yz-0.473


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.740 -1.082 -0.534
y -1.082 6.770 -0.162
z -0.534 -0.162 4.736


<r2> (average value of r2) Å2
<r2> 107.124
(<r2>)1/2 10.350