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All results from a given calculation for C5H8 (1,2-Butadiene, 3-methyl-)

using model chemistry: LSDA/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at LSDA/6-31G**
 hartrees
Energy at 0K-194.179669
Energy at 298.15K-194.186665
Nuclear repulsion energy157.554779
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**
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 3098 3040 8.58      
2 A1 3061 3004 5.22      
3 A1 2969 2913 43.50      
4 A1 2074 2035 23.78      
5 A1 1477 1450 4.08      
6 A1 1415 1388 7.01      
7 A1 1351 1326 0.03      
8 A1 1287 1263 11.30      
9 A1 994 975 11.07      
10 A1 754 740 0.14      
11 A1 327 321 0.28      
12 A2 3032 2975 0.00      
13 A2 1411 1385 0.00      
14 A2 957 939 0.00      
15 A2 597 586 0.00      
16 A2 175 172 0.00      
17 B1 3136 3077 2.41      
18 B1 3031 2974 27.01      
19 B1 1429 1402 21.88      
20 B1 1049 1030 1.93      
21 B1 977 959 0.00      
22 B1 459 450 0.45      
23 B1 265 260 4.17      
24 B1 186 182 2.08      
25 B2 3098 3040 8.08      
26 B2 2966 2911 12.45      
27 B2 1420 1393 9.20      
28 B2 1340 1315 11.77      
29 B2 1227 1204 1.89      
30 B2 931 914 0.76      
31 B2 826 810 53.58      
32 B2 596 585 7.74      
33 B2 176 173 0.17      

Unscaled Zero Point Vibrational Energy (zpe) 24044.3 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 23594.6 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**
ABC
0.28087 0.12075 0.08883

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 2.236
C2 0.000 0.000 0.931
H3 -0.933 0.000 2.814
H4 0.933 0.000 2.814
C5 0.000 0.000 -0.381
C6 0.000 1.270 -1.167
C7 0.000 -1.270 -1.167
H8 0.000 2.158 -0.518
H9 0.000 -2.158 -0.518
H10 0.886 1.319 -1.827
H11 -0.886 1.319 -1.827
H12 -0.886 -1.319 -1.827
H13 0.886 -1.319 -1.827

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 H8 H9 H10 H11 H12 H13
C11.30561.09771.09772.61773.63253.63253.49853.49854.36294.36294.36294.3629
C21.30562.10172.10171.31212.45212.45212.59872.59873.18273.18273.18273.1827
H31.09772.10171.86703.32874.28144.28144.07744.07745.15624.82474.82475.1562
H41.09772.10171.86703.32874.28144.28144.07744.07744.82475.15625.15624.8247
C52.61771.31213.32873.32871.49321.49322.16192.16192.14822.14822.14822.1482
C63.63252.45214.28144.28141.49322.53971.09983.48841.10591.10592.81472.8147
C73.63252.45214.28144.28141.49322.53973.48841.09982.81472.81471.10591.1059
H83.49852.59874.07744.07742.16191.09983.48844.31511.78951.78953.81913.8191
H93.49852.59874.07744.07742.16193.48841.09984.31513.81913.81911.78951.7895
H104.36293.18275.15624.82472.14821.10592.81471.78953.81911.77213.17792.6380
H114.36293.18274.82475.15622.14821.10592.81471.78953.81911.77212.63803.1779
H124.36293.18274.82475.15622.14822.81471.10593.81911.78953.17792.63801.7721
H134.36293.18275.15624.82472.14822.81471.10593.81911.78952.63803.17791.7721

picture of 1,2-Butadiene, 3-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 180.000 C2 C1 H3 121.740
C2 C1 H4 121.740 C2 C5 C6 121.744
C2 C5 C7 121.744 H3 C1 H4 116.520
C5 C6 H8 112.074 C5 C6 H10 110.595
C5 C6 H11 110.595 C5 C7 H9 112.074
C5 C7 H12 110.595 C5 C7 H13 110.595
C6 C5 C7 116.512 H8 C6 H10 108.447
H8 C6 H11 108.447 H9 C7 H12 108.447
H9 C7 H13 108.447 H10 C6 H11 106.487
H12 C7 H13 106.487
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.519      
2 C 0.291      
3 H 0.146      
4 H 0.146      
5 C -0.056      
6 C -0.458      
7 C -0.458      
8 H 0.155      
9 H 0.155      
10 H 0.149      
11 H 0.149      
12 H 0.149      
13 H 0.149      


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 -0.628 0.628
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.350 0.000 0.000
y 0.000 -31.577 0.000
z 0.000 0.000 -28.944
Traceless
 xyz
x -1.090 0.000 0.000
y 0.000 -1.430 0.000
z 0.000 0.000 2.520
Polar
3z2-r25.040
x2-y20.227
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.732 0.000 0.000
y 0.000 6.401 0.000
z 0.000 0.000 13.135


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