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All results from a given calculation for C5H6S (Thiophene, 2-methyl-)

using model chemistry: B1B95/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/6-31G(2df,p)
 hartrees
Energy at 0K-592.283088
Energy at 298.15K-592.289240
Nuclear repulsion energy274.122801
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 B1B95/6-31G(2df,p)
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 3277 3139 1.10      
2 A 3236 3099 5.61      
3 A 3218 3082 7.21      
4 A 3147 3014 9.65      
5 A 3052 2923 27.74      
6 A 1607 1539 3.18      
7 A 1510 1446 6.21      
8 A 1486 1423 7.59      
9 A 1405 1346 0.34      
10 A 1389 1330 0.58      
11 A 1257 1203 9.66      
12 A 1193 1142 10.16      
13 A 1097 1051 1.57      
14 A 1070 1025 3.66      
15 A 989 947 1.81      
16 A 865 829 11.95      
17 A 758 726 0.03      
18 A 684 655 1.66      
19 A 549 526 0.77      
20 A 296 284 0.69      
21 A 3118 2986 10.94      
22 A 1472 1410 7.09      
23 A 1052 1007 1.10      
24 A 915 876 0.22      
25 A 838 803 10.56      
26 A 713 683 50.35      
27 A 579 554 0.12      
28 A 480 459 3.90      
29 A 234 224 2.29      
30 A 87 83 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 20786.3 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 19907.0 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 B1B95/6-31G(2df,p)
ABC
0.17863 0.10453 0.06676

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -2.372 -1.556 0.000
C2 -1.424 -1.035 0.000
H3 -2.134 1.061 0.000
C4 -1.295 0.378 0.000
C5 0.000 0.808 0.000
H6 -0.012 -2.726 0.000
C7 -0.219 -1.668 0.000
S8 1.071 -0.542 0.000
H9 -0.323 2.907 0.000
H10 1.126 2.419 0.881
H11 1.126 2.419 -0.881
C12 0.514 2.208 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 C5 H6 C7 S8 H9 H10 H11 C12
H11.08162.62832.21333.34842.63342.15543.58874.91095.36785.36784.7430
C21.08162.21401.41892.32892.20221.36042.54274.09324.38304.38303.7781
H32.62832.21401.08262.14934.34133.33403.58342.58583.64013.64012.8860
C42.21331.41891.08261.36453.35832.31102.53792.70973.28723.28722.5735
C53.34842.32892.14931.36453.53372.48501.72242.12422.15432.15431.4916
H62.63342.20224.34133.35833.53371.07842.43825.64175.34255.34254.9619
C72.15541.36043.33402.31102.48501.07841.71224.57604.39164.39163.9442
S83.58872.54273.58342.53791.72242.43821.71223.71973.08923.08922.8051
H94.91094.09322.58582.70972.12425.64174.57603.71971.76521.76521.0911
H105.36784.38303.64013.28722.15435.34254.39163.08921.76521.76171.0932
H115.36784.38303.64013.28722.15435.34254.39163.08921.76521.76171.0932
C124.74303.77812.88602.57351.49164.96193.94422.80511.09111.09321.0932

picture of Thiophene, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C4 123.984 H1 C2 C7 123.525
C2 C4 H3 123.964 C2 C4 C5 113.572
C2 C7 H6 128.749 C2 C7 S8 111.182
H3 C4 C5 122.464 C4 C2 C7 112.491
C4 C5 S8 110.066 C4 C5 C12 128.537
C5 S8 C7 92.689 C5 C12 H9 109.691
C5 C12 H10 111.980 C5 C12 H11 111.980
H6 C7 S8 120.068 S8 C5 C12 121.397
H9 C12 H10 107.822 H9 C12 H11 107.822
H10 C12 H11 107.361
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.117      
2 C -0.089      
3 H 0.111      
4 C -0.195      
5 C 0.172      
6 H 0.139      
7 C -0.190      
8 S -0.005      
9 H 0.144      
10 H 0.150      
11 H 0.150      
12 C -0.504      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.480 0.505 0.000 0.697
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.664 0.707 0.000
y 0.707 -36.705 0.000
z 0.000 0.000 -45.040
Traceless
 xyz
x 0.209 0.707 0.000
y 0.707 6.147 0.000
z 0.000 0.000 -6.356
Polar
3z2-r2-12.711
x2-y2-3.959
xy0.707
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.384 0.460 0.000
y 0.460 12.004 0.000
z 0.000 0.000 5.638


<r2> (average value of r2) Å2
<r2> 175.257
(<r2>)1/2 13.238