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

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-195.029915
Energy at 298.15K-195.036877
Nuclear repulsion energy156.553363
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 PBEPBE/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 A1 3080 3048 13.46      
2 A1 3053 3022 10.17      
3 A1 2960 2930 53.10      
4 A1 2025 2004 19.35      
5 A1 1468 1453 1.65      
6 A1 1421 1406 4.02      
7 A1 1356 1342 1.92      
8 A1 1282 1268 17.00      
9 A1 995 985 7.89      
10 A1 727 720 0.10      
11 A1 326 322 0.17      
12 A2 3015 2984 0.00      
13 A2 1422 1408 0.00      
14 A2 967 957 0.00      
15 A2 598 591 0.00      
16 A2 170 168 0.00      
17 B1 3123 3091 4.89      
18 B1 3015 2984 37.40      
19 B1 1440 1425 13.15      
20 B1 1055 1044 0.39      
21 B1 984 973 0.40      
22 B1 445 440 0.26      
23 B1 258 255 3.76      
24 B1 183 181 1.20      
25 B2 3079 3047 13.88      
26 B2 2956 2926 17.69      
27 B2 1430 1415 5.94      
28 B2 1339 1325 2.45      
29 B2 1183 1170 5.87      
30 B2 935 925 0.12      
31 B2 824 816 42.22      
32 B2 586 580 7.86      
33 B2 176 174 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 23936.1 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 23689.5 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 PBEPBE/6-31G(2df,p)
ABC
0.27426 0.11959 0.08754

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 2.247
C2 0.000 0.000 0.936
H3 -0.932 0.000 2.824
H4 0.932 0.000 2.824
C5 0.000 0.000 -0.379
C6 0.000 1.288 -1.175
C7 0.000 -1.288 -1.175
H8 0.000 2.171 -0.521
H9 0.000 -2.171 -0.521
H10 0.887 1.339 -1.832
H11 -0.887 1.339 -1.832
H12 -0.887 -1.339 -1.832
H13 0.887 -1.339 -1.832

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 H8 H9 H10 H11 H12 H13
C11.31121.09571.09572.62663.65683.65683.51793.51794.38414.38414.38414.3841
C21.31122.10532.10531.31542.47322.47322.61462.61463.20033.20033.20033.2003
H31.09572.10531.86323.33614.30354.30354.09504.09505.17484.84494.84495.1748
H41.09572.10531.86323.33614.30354.30354.09504.09504.84495.17485.17484.8449
C52.62661.31543.33613.33611.51411.51412.17572.17572.16552.16552.16552.1655
C63.65682.47324.30354.30351.51412.57611.09913.52051.10501.10502.84922.8492
C73.65682.47324.30354.30351.51412.57613.52051.09912.84922.84921.10501.1050
H83.51792.61464.09504.09502.17571.09913.52054.34221.78871.78873.85033.8503
H93.51792.61464.09504.09502.17573.52051.09914.34223.85033.85031.78871.7887
H104.38413.20035.17484.84492.16551.10502.84921.78873.85031.77413.21182.6773
H114.38413.20034.84495.17482.16551.10502.84921.78873.85031.77412.67733.2118
H124.38413.20034.84495.17482.16552.84921.10503.85031.78873.21182.67731.7741
H134.38413.20035.17484.84492.16552.84921.10503.85031.78872.67733.21181.7741

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 121.761
C2 C1 H4 121.761 C2 C5 C6 121.709
C2 C5 C7 121.709 H3 C1 H4 116.479
C5 C6 H8 111.750 C5 C6 H10 110.576
C5 C6 H11 110.576 C5 C7 H9 111.750
C5 C7 H12 110.576 C5 C7 H13 110.576
C6 C5 C7 116.582 H8 C6 H10 108.493
H8 C6 H11 108.493 H9 C7 H12 108.493
H9 C7 H13 108.493 H10 C6 H11 106.790
H12 C7 H13 106.790
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.519      
2 C 0.377      
3 H 0.136      
4 H 0.136      
5 C 0.014      
6 C -0.484      
7 C -0.484      
8 H 0.140      
9 H 0.140      
10 H 0.136      
11 H 0.136      
12 H 0.136      
13 H 0.136      


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 -0.592 0.592
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.268 0.000 0.000
y 0.000 -31.748 0.000
z 0.000 0.000 -29.179
Traceless
 xyz
x -0.804 0.000 0.000
y 0.000 -1.525 0.000
z 0.000 0.000 2.329
Polar
3z2-r24.658
x2-y20.480
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.970 0.000 0.000
y 0.000 6.876 0.000
z 0.000 0.000 13.274


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