return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: HSEh1PBE/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HSEh1PBE/cc-pVTZ
 hartrees
Energy at 0K-195.145840
Energy at 298.15K-195.153529
HF Energy-195.145840
Nuclear repulsion energy161.167120
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 HSEh1PBE/cc-pVTZ
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' 3247 3121 11.22      
2 A' 3240 3114 9.81      
3 A' 3164 3041 2.71      
4 A' 3155 3033 14.08      
5 A' 3152 3029 2.38      
6 A' 3140 3018 15.60      
7 A' 3042 2924 17.43      
8 A' 1718 1652 2.14      
9 A' 1676 1610 28.42      
10 A' 1494 1436 6.94      
11 A' 1453 1396 3.20      
12 A' 1432 1376 3.60      
13 A' 1406 1351 9.10      
14 A' 1342 1289 0.57      
15 A' 1320 1269 0.23      
16 A' 1087 1045 4.00      
17 A' 1007 968 0.23      
18 A' 968 930 0.99      
19 A' 807 775 0.14      
20 A' 535 514 0.11      
21 A' 425 408 1.58      
22 A' 275 265 0.95      
23 A" 3098 2978 13.11      
24 A" 1473 1416 9.08      
25 A" 1067 1026 0.00      
26 A" 1034 994 15.52      
27 A" 944 907 41.56      
28 A" 932 896 42.51      
29 A" 795 764 0.54      
30 A" 649 624 0.04      
31 A" 412 396 9.73      
32 A" 200 192 0.45      
33 A" 164 158 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 24926.8 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 23957.2 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 HSEh1PBE/cc-pVTZ
ABC
0.28791 0.14088 0.09627

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.586 1.723 0.000
C2 0.000 0.522 0.000
C3 -0.822 -0.683 0.000
C4 -0.366 -1.934 0.000
C5 1.489 0.373 0.000
H6 -1.666 1.820 0.000
H7 -0.008 2.638 0.000
H8 -1.896 -0.514 0.000
H9 0.693 -2.160 0.000
H10 -1.044 -2.777 0.000
H11 1.980 1.345 0.000
H12 1.827 -0.183 0.878
H13 1.827 -0.183 -0.878

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.33602.41713.66332.47551.08371.08302.59244.08794.52322.59403.19803.1980
C21.33601.45892.48331.49632.11132.11602.16092.77023.46082.14422.14632.1463
C32.41711.45891.33182.54092.64083.41951.08662.11632.10613.45912.83562.8356
C43.66332.48331.33182.96013.97234.58622.08681.08321.08224.03182.94062.9406
C52.47551.49632.54092.96013.47042.71503.49922.65464.04231.08911.09311.0931
H61.08372.11132.64083.97233.47041.84892.34574.62614.63883.67654.12074.1207
H71.08302.11603.41954.58622.71501.84893.67504.84895.51372.37153.47803.4780
H82.59242.16091.08662.08683.49922.34573.67503.06772.41754.29903.83953.8395
H94.08792.77022.11631.08322.65464.62614.84893.06771.84413.73352.44232.4423
H104.52323.46082.10611.08224.04234.63885.51372.41751.84415.11263.96823.9682
H112.59402.14423.45914.03181.08913.67652.37154.29903.73355.11261.76901.7690
H123.19802.14632.83562.94061.09314.12073.47803.83952.44233.96821.76901.7568
H133.19802.14632.83562.94061.09314.12073.47803.83952.44233.96821.76901.7568

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 119.661 C1 C2 C5 121.758
C2 C1 H6 121.166 C2 C1 H7 121.678
C2 C3 C4 125.652 C2 C3 H8 115.406
C2 C5 H11 111.081 C2 C5 H12 111.011
C2 C5 H13 111.011 C3 C2 C5 118.582
C3 C4 H9 122.070 C3 C4 H10 121.152
C4 C3 H8 118.941 H6 C1 H7 117.156
H9 C4 H10 116.777 H11 C5 H12 108.317
H11 C5 H13 108.317 H12 C5 H13 106.952
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.300      
2 C 0.097      
3 C -0.071      
4 C -0.293      
5 C -0.287      
6 H 0.105      
7 H 0.107      
8 H 0.108      
9 H 0.112      
10 H 0.121      
11 H 0.095      
12 H 0.103      
13 H 0.103      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.271 -0.005 0.000 0.271
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.534 0.097 0.000
y 0.097 -30.102 0.000
z 0.000 0.000 -34.954
Traceless
 xyz
x 2.994 0.097 0.000
y 0.097 2.142 0.000
z 0.000 0.000 -5.136
Polar
3z2-r2-10.272
x2-y20.568
xy0.097
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.790 -0.850 0.000
y -0.850 13.450 0.000
z 0.000 0.000 5.488


<r2> (average value of r2) Å2
<r2> 130.302
(<r2>)1/2 11.415