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All results from a given calculation for C4H6S (Thiophene, 2,5-dihydro-)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-550.060139
Energy at 298.15K-550.066921
HF Energy-549.644736
Nuclear repulsion energy210.479697
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 MP2/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3232 3085 9.99      
2 A1 3128 2985 0.17      
3 A1 1673 1597 1.70      
4 A1 1567 1496 8.77      
5 A1 1314 1254 0.00      
6 A1 1209 1154 0.69      
7 A1 932 890 0.47      
8 A1 675 644 2.87      
9 A1 506 483 0.02      
10 A2 3182 3037 0.00      
11 A2 1202 1147 0.00      
12 A2 986 941 0.00      
13 A2 962 918 0.00      
14 A2 381 364 0.00      
15 B1 3184 3039 12.94      
16 B1 1194 1139 8.36      
17 B1 911 869 0.53      
18 B1 707 674 57.71      
19 B1 110 105 4.81      
20 B2 3204 3059 1.55      
21 B2 3128 2986 28.44      
22 B2 1570 1499 0.10      
23 B2 1417 1352 6.90      
24 B2 1284 1225 5.00      
25 B2 968 924 6.34      
26 B2 833 795 1.12      
27 B2 599 572 0.66      

Unscaled Zero Point Vibrational Energy (zpe) 20028.1 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 19116.8 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 MP2/3-21G
ABC
0.21108 0.14971 0.09063

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.303
C2 0.000 1.392 -0.029
C3 0.000 -1.392 -0.029
C4 0.000 0.671 -1.366
C5 0.000 -0.671 -1.366
H6 -0.895 2.002 0.110
H7 0.895 2.002 0.110
H8 0.895 -2.002 0.110
H9 -0.895 -2.002 0.110
H10 0.000 1.262 -2.276
H11 0.000 -1.262 -2.276

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.92641.92642.75172.75172.49632.49632.49632.49633.79563.7956
C21.92642.78311.51842.45751.09221.09223.51193.51192.25103.4776
C31.92642.78312.45751.51843.51193.51191.09221.09223.47762.2510
C42.75171.51842.45751.34162.17932.17933.18123.18121.08612.1370
C52.75172.45751.51841.34163.18123.18122.17932.17932.13701.0861
H62.49631.09223.51192.17933.18121.79044.38534.00312.65374.1411
H72.49631.09223.51192.17933.18121.79044.00314.38532.65374.1411
H82.49633.51191.09223.18122.17934.38534.00311.79044.14112.6537
H92.49633.51191.09223.18122.17934.00314.38531.79044.14112.6537
H103.79562.25103.47761.08612.13702.65372.65374.14114.14112.5247
H113.79563.47762.25102.13701.08614.14114.14112.65372.65372.5247

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 105.415 S1 C2 H6 108.389
S1 C2 H7 108.389 S1 C3 C5 105.415
S1 C3 H8 108.389 S1 C3 H9 108.389
C2 S1 C3 92.496 C2 C4 C5 118.337
C2 C4 H10 118.661 C3 C5 C4 118.337
C3 C5 H11 118.661 C4 C2 H6 112.154
C4 C2 H7 112.154 C4 C5 H11 123.002
C5 C3 H8 112.154 C5 C3 H9 112.154
C5 C4 H10 123.002 H6 C2 H7 110.101
H8 C3 H9 110.101
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.228     -0.310
2 C -0.626     0.083
3 C -0.626     0.083
4 C -0.156     -0.212
5 C -0.156     -0.212
6 H 0.231     0.068
7 H 0.231     0.070
8 H 0.231     0.070
9 H 0.231     0.068
10 H 0.206     0.146
11 H 0.206     0.146


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 -2.228 2.228
CHELPG        
AIM        
ESP 0.014 0.000 -2.216 2.216


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.060 0.000 0.000
y 0.000 -33.729 0.000
z 0.000 0.000 -40.580
Traceless
 xyz
x -3.905 0.000 0.000
y 0.000 7.091 0.000
z 0.000 0.000 -3.186
Polar
3z2-r2-6.372
x2-y2-7.331
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.091 -0.000 0.000
y -0.000 9.323 -0.000
z 0.000 -0.000 4.294


<r2> (average value of r2) Å2
<r2> 134.899
(<r2>)1/2 11.615