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

using model chemistry: PBEPBE/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-195.039880
Energy at 298.15K-195.047390
Nuclear repulsion energy159.194326
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/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3179 3160 12.25      
2 A' 3172 3154 10.40      
3 A' 3087 3069 2.20      
4 A' 3076 3058 14.03      
5 A' 3073 3055 3.46      
6 A' 3071 3053 14.48      
7 A' 2966 2949 18.15      
8 A' 1655 1646 2.32      
9 A' 1618 1608 20.31      
10 A' 1422 1414 5.05      
11 A' 1385 1377 4.81      
12 A' 1370 1362 1.64      
13 A' 1343 1335 7.07      
14 A' 1290 1282 0.74      
15 A' 1265 1258 0.29      
16 A' 1043 1037 4.12      
17 A' 964 959 0.29      
18 A' 935 930 1.11      
19 A' 788 783 0.07      
20 A' 518 515 0.20      
21 A' 411 408 1.37      
22 A' 269 267 0.79      
23 A" 3032 3014 12.65      
24 A" 1400 1392 7.23      
25 A" 1019 1013 0.02      
26 A" 990 984 12.85      
27 A" 881 876 20.50      
28 A" 873 868 42.07      
29 A" 761 756 0.23      
30 A" 618 614 0.02      
31 A" 400 398 6.73      
32 A" 199 198 0.56      
33 A" 166 165 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 24117.8 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 23977.9 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/cc-pVDZ
ABC
0.28187 0.13739 0.09402

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.598 1.744 0.000
C2 0.000 0.526 0.000
C3 -0.825 -0.689 0.000
C4 -0.366 -1.961 0.000
C5 1.502 0.381 0.000
H6 -1.695 1.839 0.000
H7 -0.011 2.674 0.000
H8 -1.916 -0.517 0.000
H9 0.708 -2.196 0.000
H10 -1.060 -2.814 0.000
H11 2.002 1.368 0.000
H12 1.849 -0.183 0.891
H13 1.849 -0.183 -0.891

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.35662.44343.71162.50281.10091.10012.61704.15044.58082.62733.23973.2397
C21.35661.46882.51351.50852.14392.14792.18142.81243.50402.17212.17162.1716
C32.44341.46881.35172.56112.67363.46021.10402.14992.13763.49652.86362.8636
C43.71162.51351.35172.99584.02534.64822.11741.10041.09954.08542.97662.9766
C52.50281.50852.56112.99583.51302.74633.53352.69634.09531.10631.11041.1104
H61.10092.14392.67364.02533.51301.87972.36684.69634.69603.72694.17654.1765
H71.10012.14793.46024.64822.74631.87973.71664.92245.58712.39943.52373.5237
H82.61702.18141.10402.11743.53352.36683.71663.11512.45064.34793.88313.8831
H94.15042.81242.14991.10042.69634.69634.92243.11511.87363.79122.47842.4784
H104.58083.50402.13761.09954.09534.69605.58712.45061.87365.18314.02184.0218
H112.62732.17213.49654.08541.10633.72692.39944.34793.79125.18311.79541.7954
H123.23972.17162.86362.97661.11044.17653.52373.88312.47844.02181.79541.7811
H133.23972.17162.86362.97661.11044.17653.52373.88312.47844.02181.79541.7811

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 119.668 C1 C2 C5 121.655
C2 C1 H6 121.128 C2 C1 H7 121.574
C2 C3 C4 125.987 C2 C3 H8 115.225
C2 C5 H11 111.409 C2 C5 H12 111.118
C2 C5 H13 111.118 C3 C2 C5 118.677
C3 C4 H9 122.167 C3 C4 H10 121.047
C4 C3 H8 118.788 H6 C1 H7 117.298
H9 C4 H10 116.786 H11 C5 H12 108.181
H11 C5 H13 108.181 H12 C5 H13 106.644
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.021      
2 C -0.174      
3 C -0.025      
4 C -0.009      
5 C -0.001      
6 H 0.016      
7 H 0.016      
8 H -0.021      
9 H 0.017      
10 H 0.027      
11 H 0.028      
12 H 0.053      
13 H 0.053      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.301 -0.000 0.000 0.301
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.685 0.130 0.000
y 0.130 -30.285 0.000
z 0.000 0.000 -34.572
Traceless
 xyz
x 2.743 0.130 0.000
y 0.130 1.844 0.000
z 0.000 0.000 -4.587
Polar
3z2-r2-9.174
x2-y20.599
xy0.130
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.694 -0.768 0.000
y -0.768 13.392 0.000
z 0.000 0.000 4.358


<r2> (average value of r2) Å2
<r2> 133.015
(<r2>)1/2 11.533