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 (1,2-Butadiene, 3-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 C2V 1A1
Energy calculated at HSEh1PBE/cc-pVTZ
 hartrees
Energy at 0K-195.128493
Energy at 298.15K-195.135623
HF Energy-195.128493
Nuclear repulsion energy157.924436
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 A1 3146 3024 14.16      
2 A1 3127 3005 8.04      
3 A1 3033 2915 55.32      
4 A1 2078 1998 34.11      
5 A1 1514 1455 1.65      
6 A1 1466 1409 8.19      
7 A1 1407 1352 0.56      
8 A1 1320 1269 18.82      
9 A1 1027 987 6.69      
10 A1 750 720 0.10      
11 A1 338 325 0.17      
12 A2 3084 2964 0.00      
13 A2 1466 1409 0.00      
14 A2 999 960 0.00      
15 A2 617 593 0.00      
16 A2 166 160 0.00      
17 B1 3200 3076 3.43      
18 B1 3084 2964 38.56      
19 B1 1483 1426 16.64      
20 B1 1095 1052 0.08      
21 B1 1019 980 0.76      
22 B1 465 447 0.28      
23 B1 262 252 5.68      
24 B1 183 176 1.33      
25 B2 3145 3023 14.35      
26 B2 3029 2911 16.56      
27 B2 1474 1417 7.15      
28 B2 1391 1337 6.77      
29 B2 1230 1182 4.97      
30 B2 968 930 0.11      
31 B2 880 846 50.19      
32 B2 609 586 11.84      
33 B2 184 177 0.49      

Unscaled Zero Point Vibrational Energy (zpe) 24619.7 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 23662.0 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 HSEh1PBE/cc-pVTZ
ABC
0.27863 0.12176 0.08907

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 2.228
C2 0.000 0.000 0.927
H3 -0.926 0.000 2.795
H4 0.926 0.000 2.795
C5 0.000 0.000 -0.376
C6 0.000 1.278 -1.165
C7 0.000 -1.278 -1.165
H8 0.000 2.153 -0.517
H9 0.000 -2.153 -0.517
H10 0.879 1.327 -1.814
H11 -0.879 1.327 -1.814
H12 -0.879 -1.327 -1.814
H13 0.879 -1.327 -1.814

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 H8 H9 H10 H11 H12 H13
C11.30091.08531.08532.60453.62593.62593.48833.48834.34454.34454.34454.3445
C21.30092.08432.08431.30372.45182.45182.59212.59213.17023.17023.17023.1702
H31.08532.08431.85133.30354.26264.26264.05674.05675.12464.79654.79655.1246
H41.08532.08431.85133.30354.26264.26264.05674.05674.79655.12465.12464.7965
C52.60451.30373.30353.30351.50201.50202.15722.15722.14512.14512.14512.1451
C63.62592.45184.26264.26261.50202.55661.08843.49171.09421.09422.82532.8253
C73.62592.45184.26264.26261.50202.55663.49171.08842.82532.82531.09421.0942
H83.48832.59214.05674.05672.15721.08843.49174.30541.77161.77163.81633.8163
H93.48832.59214.05674.05672.15723.49171.08844.30543.81633.81631.77161.7716
H104.34453.17025.12464.79652.14511.09422.82531.77163.81631.75863.18362.6538
H114.34453.17024.79655.12462.14511.09422.82531.77163.81631.75862.65383.1836
H124.34453.17024.79655.12462.14512.82531.09423.81631.77163.18362.65381.7586
H134.34453.17025.12464.79652.14512.82531.09423.81631.77162.65383.18361.7586

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 121.472
C2 C1 H4 121.472 C2 C5 C6 121.667
C2 C5 C7 121.667 H3 C1 H4 117.056
C5 C6 H8 111.781 C5 C6 H10 110.449
C5 C6 H11 110.449 C5 C7 H9 111.781
C5 C7 H12 110.449 C5 C7 H13 110.449
C6 C5 C7 116.665 H8 C6 H10 108.528
H8 C6 H11 108.528 H9 C7 H12 108.528
H9 C7 H13 108.528 H10 C6 H11 106.954
H12 C7 H13 106.954
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 -0.365      
2 C -0.024      
3 H 0.122      
4 H 0.122      
5 C 0.064      
6 C -0.252      
7 C -0.252      
8 H 0.103      
9 H 0.103      
10 H 0.095      
11 H 0.095      
12 H 0.095      
13 H 0.095      


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 -0.623 0.623
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.871 0.000 0.000
y 0.000 -32.367 0.000
z 0.000 0.000 -29.487
Traceless
 xyz
x -0.944 0.000 0.000
y 0.000 -1.688 0.000
z 0.000 0.000 2.632
Polar
3z2-r25.263
x2-y20.496
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.485 0.000 0.000
y 0.000 7.722 0.000
z 0.000 0.000 13.801


<r2> (average value of r2) Å2
<r2> 141.642
(<r2>)1/2 11.901