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

using model chemistry: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-195.272086
Energy at 298.15K-195.279731
Nuclear repulsion energy160.571454
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 B3PW91/6-311G*
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' 3234 3113 19.49      
2 A' 3226 3106 15.19      
3 A' 3154 3036 5.13      
4 A' 3144 3027 23.22      
5 A' 3140 3023 3.78      
6 A' 3129 3012 19.91      
7 A' 3036 2923 21.82      
8 A' 1715 1651 2.18      
9 A' 1672 1610 25.10      
10 A' 1513 1456 8.94      
11 A' 1463 1409 1.92      
12 A' 1438 1384 3.76      
13 A' 1419 1366 9.31      
14 A' 1340 1290 0.93      
15 A' 1328 1278 0.20      
16 A' 1092 1051 4.48      
17 A' 1014 976 0.36      
18 A' 969 933 0.74      
19 A' 801 771 0.16      
20 A' 534 514 0.16      
21 A' 426 410 1.39      
22 A' 276 265 0.86      
23 A" 3091 2976 20.93      
24 A" 1495 1439 10.44      
25 A" 1073 1033 0.11      
26 A" 1024 986 20.52      
27 A" 921 887 40.63      
28 A" 911 877 57.36      
29 A" 786 757 0.48      
30 A" 641 617 0.04      
31 A" 405 390 11.22      
32 A" 207 200 0.35      
33 A" 161 155 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 24888.1 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 23959.7 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 B3PW91/6-311G*
ABC
0.28589 0.13960 0.09546

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.590 1.728 0.000
C2 0.000 0.524 0.000
C3 -0.823 -0.686 0.000
C4 -0.369 -1.943 0.000
C5 1.495 0.378 0.000
H6 -1.671 1.830 0.000
H7 -0.014 2.649 0.000
H8 -1.900 -0.520 0.000
H9 0.690 -2.181 0.000
H10 -1.052 -2.787 0.000
H11 1.989 1.352 0.000
H12 1.839 -0.175 0.880
H13 1.839 -0.175 -0.880

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.34042.42543.67762.48311.08651.08582.60214.11274.53812.60553.20853.2085
C21.34041.46362.49471.50202.12082.12452.16782.79153.47392.15402.15542.1554
C32.42541.46361.33612.55062.65543.43161.08942.12662.11283.47252.84982.8498
C43.67762.49471.33612.97743.99134.60552.08951.08581.08524.05182.96262.9626
C52.48311.50202.55062.97743.48302.72593.51142.68264.06261.09151.09521.0952
H61.08652.12082.65543.99133.48301.84842.36134.65414.65783.69094.13724.1372
H71.08582.12453.43164.60552.72591.84843.68754.88045.53352.38583.49033.4903
H82.60212.16781.08942.08953.51142.36133.68753.07632.41954.31553.85633.8563
H94.11272.79152.12661.08582.68264.65414.88043.07631.84473.76362.47312.4731
H104.53813.47392.11281.08524.06264.65785.53352.41951.84475.13543.99413.9941
H112.60552.15403.47254.05181.09153.69092.38584.31553.76365.13541.76881.7688
H123.20852.15542.84982.96261.09524.13723.49033.85632.47313.99411.76881.7603
H133.20852.15542.84982.96261.09524.13723.49033.85632.47313.99411.76881.7603

picture of 1,3-Butadiene, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 119.701 C1 C2 C5 121.660
C2 C1 H6 121.480 C2 C1 H7 121.898
C2 C3 C4 125.952 C2 C3 H8 115.445
C2 C5 H11 111.328 C2 C5 H12 111.209
C2 C5 H13 111.209 C3 C2 C5 118.639
C3 C4 H9 122.478 C3 C4 H10 121.168
C4 C3 H8 118.604 H6 C1 H7 116.621
H9 C4 H10 116.354 H11 C5 H12 107.977
H11 C5 H13 107.977 H12 C5 H13 106.953
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.469      
2 C 0.109      
3 C -0.216      
4 C -0.447      
5 C -0.750      
6 H 0.215      
7 H 0.213      
8 H 0.197      
9 H 0.218      
10 H 0.220      
11 H 0.231      
12 H 0.239      
13 H 0.239      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.243 -0.004 0.000 0.243
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.258 0.108 0.000
y 0.108 -29.740 0.000
z 0.000 0.000 -35.163
Traceless
 xyz
x 3.193 0.108 0.000
y 0.108 2.471 0.000
z 0.000 0.000 -5.664
Polar
3z2-r2-11.327
x2-y20.481
xy0.108
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 131.176
(<r2>)1/2 11.453