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

using model chemistry: LSDA/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 LSDA/6-31G(2df,p)
 hartrees
Energy at 0K-590.184009
Energy at 298.15K-590.190053
Nuclear repulsion energy274.416570
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 LSDA/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 3201 3150 1.62      
2 A 3161 3110 1.21      
3 A 3142 3092 3.51      
4 A 3073 3024 3.97      
5 A 2975 2927 19.93      
6 A 1575 1550 5.62      
7 A 1492 1468 4.91      
8 A 1419 1397 7.41      
9 A 1357 1336 0.61      
10 A 1337 1316 1.01      
11 A 1206 1187 9.90      
12 A 1188 1169 10.46      
13 A 1057 1040 4.54      
14 A 1041 1025 3.42      
15 A 953 938 2.82      
16 A 855 842 10.90      
17 A 751 739 0.00      
18 A 681 671 0.98      
19 A 547 538 0.80      
20 A 290 286 0.70      
21 A 3041 2992 4.61      
22 A 1401 1378 9.78      
23 A 1007 991 2.63      
24 A 875 861 0.18      
25 A 799 787 11.51      
26 A 680 669 50.48      
27 A 574 565 0.34      
28 A 476 468 4.51      
29 A 231 227 2.50      
30 A 85 83 0.14      

Unscaled Zero Point Vibrational Energy (zpe) 20234.7 cm-1
Scaled (by 0.984) Zero Point Vibrational Energy (zpe) 19911.0 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 LSDA/6-31G(2df,p)
ABC
0.17879 0.10515 0.06705

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -2.374 -1.565 0.000
C2 -1.420 -1.035 0.000
H3 -2.142 1.063 0.000
C4 -1.297 0.371 0.000
C5 0.000 0.809 0.000
H6 0.006 -2.733 0.000
C7 -0.209 -1.666 0.000
S8 1.070 -0.535 0.000
H9 -0.341 2.901 0.000
H10 1.124 2.420 0.887
H11 1.124 2.420 -0.887
C12 0.506 2.197 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 C5 H6 C7 S8 H9 H10 H11 C12
H11.09152.63882.21573.35702.65102.16693.59484.90735.37635.37634.7379
C21.09152.21931.41142.32692.21701.36492.53964.08154.38134.38133.7623
H32.63882.21931.09282.15714.36173.34423.58802.57323.64613.64612.8804
C42.21571.41141.09281.36853.36592.30882.53432.70483.29323.29322.5659
C53.35702.32692.15711.36853.54112.48311.71782.12042.15582.15581.4779
H62.65102.21704.36173.36593.54111.08842.44135.64465.34675.34674.9549
C72.16691.36493.34422.30882.48311.08841.70744.56904.38864.38863.9285
S83.59482.53963.58802.53431.71782.44131.70743.71503.08613.08612.7899
H94.90734.08152.57322.70482.12045.64464.56903.71501.77881.77881.1016
H105.37634.38133.64613.29322.15585.34674.38863.08611.77881.77371.1037
H115.37634.38133.64613.29322.15585.34674.38863.08611.77881.77371.1037
C124.73793.76232.88042.56591.47794.95493.92852.78991.10161.10371.1037

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 124.066 H1 C2 C7 123.419
C2 C4 H3 124.312 C2 C4 C5 113.653
C2 C7 H6 128.951 C2 C7 S8 111.014
H3 C4 C5 122.035 C4 C2 C7 112.515
C4 C5 S8 109.889 C4 C5 C12 128.667
C5 S8 C7 92.929 C5 C12 H9 109.722
C5 C12 H10 112.438 C5 C12 H11 112.438
H6 C7 S8 120.035 S8 C5 C12 121.444
H9 C12 H10 107.531 H9 C12 H11 107.531
H10 C12 H11 106.935
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.134      
2 C -0.108      
3 H 0.127      
4 C -0.216      
5 C 0.248      
6 H 0.156      
7 C -0.186      
8 S -0.062      
9 H 0.167      
10 H 0.175      
11 H 0.175      
12 C -0.609      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.431 0.546 0.000 0.695
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.856 0.708 0.000
y 0.708 -36.741 0.000
z 0.000 0.000 -45.127
Traceless
 xyz
x 0.078 0.708 0.000
y 0.708 6.251 0.000
z 0.000 0.000 -6.329
Polar
3z2-r2-12.657
x2-y2-4.115
xy0.708
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.569 0.513 0.000
y 0.513 12.415 0.000
z 0.000 0.000 5.688


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000