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 C4H6OS (2,3-dihydrothiophene-2-ol)

using model chemistry: M06-2X/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 M06-2X/3-21G*
 hartrees
Energy at 0K-626.155014
Energy at 298.15K-626.162480
HF Energy-626.155014
Nuclear repulsion energy293.974254
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 M06-2X/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 3579 3390 10.05      
2 A 3248 3076 2.78      
3 A 3209 3039 0.58      
4 A 3187 3019 1.23      
5 A 3117 2952 32.28      
6 A 3093 2930 5.13      
7 A 1676 1588 5.09      
8 A 1513 1433 7.19      
9 A 1414 1339 11.24      
10 A 1367 1295 5.86      
11 A 1354 1283 12.65      
12 A 1317 1248 78.99      
13 A 1270 1203 1.81      
14 A 1224 1159 22.54      
15 A 1166 1104 0.48      
16 A 1064 1008 53.20      
17 A 1018 964 17.68      
18 A 984 932 1.12      
19 A 941 892 32.15      
20 A 890 843 25.29      
21 A 837 793 20.63      
22 A 770 729 29.45      
23 A 705 668 59.43      
24 A 655 621 8.27      
25 A 574 544 1.25      
26 A 429 407 26.79      
27 A 390 369 64.02      
28 A 367 347 60.93      
29 A 326 309 47.72      
30 A 125 119 1.84      

Unscaled Zero Point Vibrational Energy (zpe) 20903.1 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 19799.4 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 M06-2X/3-21G*
ABC
0.13098 0.11385 0.07455

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.462 -1.247 0.223
C2 0.933 -0.058 0.439
C3 0.300 1.345 0.534
C4 -1.002 1.283 -0.243
C5 -1.476 0.053 -0.433
O6 1.774 -0.016 -0.734
H7 1.482 -0.337 1.343
H8 1.019 2.049 0.106
H9 -1.510 2.179 -0.572
H10 -2.400 -0.206 -0.931
H11 0.103 1.609 1.581
H12 1.978 -0.945 -1.015

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 O6 H7 H8 H9 H10 H11 H12
S11.84612.71982.62871.77442.72602.42063.61533.67062.48403.21202.7534
C21.84611.54202.45112.56471.44361.09352.13443.46373.60632.18401.9986
C32.71981.54201.51802.40032.37332.20911.09322.27973.44091.09693.2345
C42.62872.45111.51801.33203.10363.36292.18921.08172.15442.15713.8002
C51.77442.56472.40031.33203.26443.47183.24042.13171.08042.99473.6424
O62.72601.44362.37333.10363.26442.12182.35363.95334.18223.28470.9919
H72.42061.09352.20913.36293.47182.12182.72714.35334.50002.39682.4854
H83.61532.13441.09322.18923.24042.35362.72712.62144.22421.79083.3378
H93.67063.46372.27971.08172.13173.95334.35332.62142.57082.74984.7038
H102.48403.60633.44092.15441.08044.18224.50004.22422.57083.98244.4406
H113.21202.18401.09692.15712.99473.28472.39681.79082.74983.98244.0961
H122.75341.99863.23453.80023.64240.99192.48543.33784.70384.44064.0961

picture of 2,3-dihydrothiophene-2-ol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 106.441 S1 C2 O6 111.327
S1 C2 H7 108.114 S1 C5 C4 114.866
S1 C5 H10 118.930 C2 S1 C5 90.184
C2 C3 C4 106.454 C2 C3 H8 106.949
C2 C3 H11 110.576 C2 O6 H12 108.877
C3 C2 O6 105.244 C3 C2 H7 112.791
C3 C4 C5 114.591 C3 C4 H9 121.639
C4 C3 H8 112.940 C4 C3 H11 110.123
C4 C5 H10 126.202 C5 C4 H9 123.723
O6 C2 H7 112.772 H8 C3 H11 109.709
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.209      
2 C -0.144      
3 C -0.437      
4 C -0.178      
5 C -0.399      
6 O -0.571      
7 H 0.223      
8 H 0.253      
9 H 0.220      
10 H 0.237      
11 H 0.226      
12 H 0.362      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.045 0.219 0.511 0.557
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.066 -3.939 3.345
y -3.939 -41.019 2.002
z 3.345 2.002 -43.929
Traceless
 xyz
x 1.408 -3.939 3.345
y -3.939 1.478 2.002
z 3.345 2.002 -2.886
Polar
3z2-r2-5.772
x2-y2-0.046
xy-3.939
xz3.345
yz2.002


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.094 0.254 0.783
y 0.254 9.661 0.056
z 0.783 0.056 5.749


<r2> (average value of r2) Å2
<r2> 169.113
(<r2>)1/2 13.004