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

using model chemistry: B3LYP/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 B3LYP/6-31G*
 hartrees
Energy at 0K-195.294206
Energy at 298.15K-195.301315
Nuclear repulsion energy156.869468
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 B3LYP/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 3141 3017 18.48      
2 A1 3132 3007 12.13      
3 A1 3033 2913 64.99      
4 A1 2078 1995 20.96      
5 A1 1543 1482 0.46      
6 A1 1501 1441 2.58      
7 A1 1441 1384 2.84      
8 A1 1334 1281 18.63      
9 A1 1038 997 7.36      
10 A1 739 710 0.02      
11 A1 340 327 0.15      
12 A2 3077 2955 0.00      
13 A2 1505 1445 0.00      
14 A2 1016 975 0.00      
15 A2 616 592 0.00      
16 A2 168 162 0.00      
17 B1 3197 3070 9.23      
18 B1 3079 2957 54.68      
19 B1 1520 1459 13.68      
20 B1 1112 1068 0.34      
21 B1 1041 1000 0.26      
22 B1 468 450 0.34      
23 B1 270 259 3.77      
24 B1 182 175 1.04      
25 B2 3141 3016 20.65      
26 B2 3029 2908 18.28      
27 B2 1514 1454 5.88      
28 B2 1425 1369 1.65      
29 B2 1220 1172 4.84      
30 B2 977 938 0.16      
31 B2 871 836 48.87      
32 B2 611 587 7.52      
33 B2 187 179 0.09      

Unscaled Zero Point Vibrational Energy (zpe) 24772.5 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 23789.0 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 B3LYP/6-31G*
ABC
0.27429 0.12015 0.08779

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 2.242
C2 0.000 0.000 0.934
H3 -0.926 0.000 2.817
H4 0.926 0.000 2.817
C5 0.000 0.000 -0.377
C6 0.000 1.289 -1.173
C7 0.000 -1.289 -1.173
H8 0.000 2.167 -0.522
H9 0.000 -2.167 -0.522
H10 0.883 1.341 -1.826
H11 -0.883 1.341 -1.826
H12 -0.883 -1.341 -1.826
H13 0.883 -1.341 -1.826

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 H8 H9 H10 H11 H12 H13
C11.30821.08941.08942.61983.65093.65093.51283.51284.37344.37344.37344.3734
C21.30822.09782.09781.31162.47062.47062.61102.61103.19293.19293.19293.1929
H31.08942.09781.85163.32564.29414.29414.08684.08685.15944.83234.83235.1594
H41.08942.09781.85163.32564.29414.29414.08684.08684.83235.15945.15944.8323
C52.61981.31163.32563.32561.51491.51492.17182.17182.16222.16222.16222.1622
C63.65092.47064.29414.29411.51492.57791.09303.51661.09861.09862.85002.8500
C73.65092.47064.29414.29411.51492.57793.51661.09302.85002.85001.09861.0986
H83.51282.61104.08684.08682.17181.09303.51664.33381.77731.77733.84513.8451
H93.51282.61104.08684.08682.17183.51661.09304.33383.84513.84511.77731.7773
H104.37343.19295.15944.83232.16221.09862.85001.77733.84511.76513.21132.6827
H114.37343.19294.83235.15942.16221.09862.85001.77733.84511.76512.68273.2113
H124.37343.19294.83235.15942.16222.85001.09863.84511.77733.21132.68271.7651
H134.37343.19295.15944.83232.16222.85001.09863.84511.77732.68273.21131.7651

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 121.811
C2 C1 H4 121.811 C2 C5 C6 121.699
C2 C5 C7 121.699 H3 C1 H4 116.377
C5 C6 H8 111.745 C5 C6 H10 110.640
C5 C6 H11 110.640 C5 C7 H9 111.745
C5 C7 H12 110.640 C5 C7 H13 110.640
C6 C5 C7 116.603 H8 C6 H10 108.376
H8 C6 H11 108.376 H9 C7 H12 108.376
H9 C7 H13 108.376 H10 C6 H11 106.900
H12 C7 H13 106.900
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.550 -0.354   -0.443
2 C 0.283 0.032   -0.003
3 H 0.158 0.138   0.175
4 H 0.158 0.138   0.174
5 C -0.021 0.009   0.229
6 C -0.484 -0.129   -0.471
7 C -0.484 -0.129   -0.471
8 H 0.163 0.041   0.134
9 H 0.163 0.041   0.134
10 H 0.153 0.053   0.136
11 H 0.153 0.053   0.135
12 H 0.153 0.053   0.135
13 H 0.153 0.053   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 -0.578 0.578
CHELPG 0.000 0.000 -0.592 0.592
AIM        
ESP 0.013 0.000 -0.592 0.592


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.439 0.000 0.000
y 0.000 -31.833 0.000
z 0.000 0.000 -29.409
Traceless
 xyz
x -0.818 0.000 0.000
y 0.000 -1.409 0.000
z 0.000 0.000 2.228
Polar
3z2-r24.455
x2-y20.394
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.500 0.000 0.000
y 0.000 6.087 0.000
z 0.000 0.000 12.794


<r2> (average value of r2) Å2
<r2> 143.179
(<r2>)1/2 11.966