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 C4H4S (Thiophene)

using model chemistry: B1B95/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/aug-cc-pVDZ
 hartrees
Energy at 0K-553.004766
Energy at 298.15K-553.009173
Nuclear repulsion energy 
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 B1B95/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3284 3145 1.54      
2 A1 3252 3115 2.59      
3 A1 1487 1424 10.80      
4 A1 1403 1344 0.47      
5 A1 1090 1044 3.19      
6 A1 1068 1023 2.28      
7 A1 862 825 23.82      
8 A1 614 589 0.04      
9 A2 908 870 0.00      
10 A2 690 661 0.00      
11 A2 575 551 0.00      
12 B1 874 838 0.02      
13 B1 725 694 128.55      
14 B1 458 439 0.62      
15 B2 3281 3143 0.00      
16 B2 3238 3102 3.31      
17 B2 1580 1513 0.23      
18 B2 1267 1213 9.47      
19 B2 1095 1049 3.80      
20 B2 884 846 1.31      
21 B2 767 734 0.19      

Unscaled Zero Point Vibrational Energy (zpe) 14699.8 cm-1
Scaled (by 0.9579) Zero Point Vibrational Energy (zpe) 14081.0 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 B1B95/aug-cc-pVDZ
ABC
0.26888 0.18055 0.10802

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.190
C2 0.000 1.235 -0.007
C3 0.000 -1.235 -0.007
C4 0.000 0.711 -1.268
C5 0.000 -0.711 -1.268
H6 0.000 2.277 0.291
H7 0.000 -2.277 0.291
H8 0.000 1.321 -2.167
H9 0.000 -1.321 -2.167

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9
S11.71971.71972.55912.55912.44832.44833.60783.6078
C21.71972.46971.36592.31891.08413.52472.16203.3466
C31.71972.46972.31891.36593.52471.08413.34662.1620
C42.55911.36592.31891.42182.21013.37041.08642.2219
C52.55912.31891.36591.42183.37042.21012.22191.0864
H62.44831.08413.52472.21013.37044.55442.63754.3577
H72.44833.52471.08413.37042.21014.55444.35772.6375
H83.60782.16203.34661.08642.22192.63754.35772.6421
H93.60783.34662.16202.22191.08644.35772.63752.6421

picture of Thiophene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C4 111.550 S1 C2 H6 119.948
S1 C3 C5 111.550 S1 C3 H7 119.948
C2 S1 C3 91.787 C2 C4 C5 112.557
C2 C4 H8 123.275 C3 C5 C4 112.557
C3 C5 H9 123.275 C4 C2 H6 128.502
C4 C5 H9 124.168 C5 C3 H7 128.502
C5 C4 H8 124.168
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.528      
2 C 0.003      
3 C 0.003      
4 C 0.705      
5 C 0.705      
6 H -0.508      
7 H -0.508      
8 H -0.465      
9 H -0.465      


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 -0.532 0.532
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.442 0.000 0.000
y 0.000 10.405 0.000
z 0.000 0.000 11.304


<r2> (average value of r2) Å2
<r2> 111.921
(<r2>)1/2 10.579