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 C4H6S (Thiophene, 2,5-dihydro-)

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-552.544346
Energy at 298.15K-552.551443
HF Energy-552.544346
Nuclear repulsion energy217.280155
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/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3337 3025 20.10      
2 A1 3189 2890 0.26      
3 A1 1846 1673 9.60      
4 A1 1618 1467 4.62      
5 A1 1419 1286 0.36      
6 A1 1237 1122 0.91      
7 A1 1010 915 0.33      
8 A1 777 704 3.32      
9 A1 556 504 0.02      
10 A2 3221 2920 0.00      
11 A2 1260 1142 0.00      
12 A2 1096 993 0.00      
13 A2 1034 937 0.00      
14 A2 420 381 0.00      
15 B1 3223 2921 26.58      
16 B1 1241 1124 14.98      
17 B1 1000 906 3.42      
18 B1 753 683 48.98      
19 B1 110 100 4.34      
20 B2 3312 3002 6.55      
21 B2 3189 2891 87.99      
22 B2 1614 1463 0.07      
23 B2 1488 1349 3.73      
24 B2 1379 1250 5.82      
25 B2 1034 937 9.71      
26 B2 893 810 1.58      
27 B2 702 636 0.33      

Unscaled Zero Point Vibrational Energy (zpe) 20978.4 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 19014.8 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/Def2TZVPP
ABC
0.22387 0.16142 0.09713

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.238
C2 0.000 1.342 0.005
C3 0.000 -1.342 0.005
C4 0.000 0.656 -1.329
C5 0.000 -0.656 -1.329
H6 -0.876 1.964 0.135
H7 0.876 1.964 0.135
H8 0.876 -1.964 0.135
H9 -0.876 -1.964 0.135
H10 0.000 1.243 -2.228
H11 0.000 -1.243 -2.228

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.82241.82242.64902.64902.41692.41692.41692.41693.68193.6819
C21.82242.68401.49982.40191.08191.08193.42263.42262.23493.4159
C31.82242.68402.40191.49983.42263.42261.08191.08193.41592.2349
C42.64901.49982.40191.31142.14952.14953.12613.12611.07412.1010
C52.64902.40191.49981.31143.12613.12612.14952.14952.10101.0741
H62.41691.08193.42262.14953.12611.75104.30103.92842.62084.0787
H72.41691.08193.42262.14953.12611.75103.92844.30102.62084.0787
H82.41693.42261.08193.12612.14954.30103.92841.75104.07872.6208
H92.41693.42261.08193.12612.14953.92844.30101.75104.07872.6208
H103.68192.23493.41591.07412.10102.62082.62084.07874.07872.4864
H113.68193.41592.23492.10101.07414.07874.07872.62082.62082.4864

picture of Thiophene, 2,5-dihydro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C4 105.344 S1 C2 H6 110.012
S1 C2 H7 110.012 S1 C3 C5 105.344
S1 C3 H8 110.012 S1 C3 H9 110.012
C2 S1 C3 94.848 C2 C4 C5 117.232
C2 C4 H10 119.608 C3 C5 C4 117.232
C3 C5 H11 119.608 C4 C2 H6 111.713
C4 C2 H7 111.713 C4 C5 H11 123.160
C5 C3 H8 111.713 C5 C3 H9 111.713
C5 C4 H10 123.160 H6 C2 H7 108.040
H8 C3 H9 108.040
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.097      
2 C -0.035      
3 C -0.035      
4 C -0.135      
5 C -0.135      
6 H 0.068      
7 H 0.068      
8 H 0.068      
9 H 0.068      
10 H 0.082      
11 H 0.082      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.919 1.919
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.141 0.000 0.000
y 0.000 -32.835 0.000
z 0.000 0.000 -39.928
Traceless
 xyz
x -3.760 0.000 0.000
y 0.000 7.200 0.000
z 0.000 0.000 -3.440
Polar
3z2-r2-6.880
x2-y2-7.306
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.381 0.000 0.000
y 0.000 10.652 0.000
z 0.000 0.000 9.178


<r2> (average value of r2) Å2
<r2> 127.616
(<r2>)1/2 11.297