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

using model chemistry: HF/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/LANL2DZ
 hartrees
Energy at 0K-193.903892
Energy at 298.15K-193.911912
Nuclear repulsion energy160.246546
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 HF/LANL2DZ
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' 3442 3097 36.37      
2 A' 3431 3087 26.00      
3 A' 3361 3025 13.94      
4 A' 3342 3007 17.81      
5 A' 3334 3000 9.12      
6 A' 3300 2970 34.25      
7 A' 3198 2878 38.22      
8 A' 1861 1675 1.75      
9 A' 1794 1615 47.87      
10 A' 1655 1489 10.18      
11 A' 1611 1450 1.97      
12 A' 1578 1420 6.71      
13 A' 1566 1410 6.99      
14 A' 1465 1319 0.56      
15 A' 1446 1301 1.85      
16 A' 1201 1081 8.54      
17 A' 1119 1007 0.59      
18 A' 1051 946 0.25      
19 A' 834 751 0.76      
20 A' 579 521 0.29      
21 A' 463 416 1.00      
22 A' 302 272 0.89      
23 A" 3269 2942 41.42      
24 A" 1637 1473 11.51      
25 A" 1196 1076 5.37      
26 A" 1145 1030 8.00      
27 A" 1109 998 170.34      
28 A" 1101 991 0.65      
29 A" 863 776 1.16      
30 A" 713 642 0.16      
31 A" 453 407 16.78      
32 A" 217 196 0.60      
33 A" 159 143 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 26896.2 cm-1
Scaled (by 0.8999) Zero Point Vibrational Energy (zpe) 24203.9 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 HF/LANL2DZ
ABC
0.28382 0.13822 0.09456

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.597 1.731 0.000
C2 0.000 0.532 0.000
C3 -0.826 -0.698 0.000
C4 -0.369 -1.955 0.000
C5 1.506 0.389 0.000
H6 -1.668 1.829 0.000
H7 -0.035 2.645 0.000
H8 -1.889 -0.534 0.000
H9 0.677 -2.194 0.000
H10 -1.046 -2.788 0.000
H11 1.987 1.359 0.000
H12 1.845 -0.155 0.876
H13 1.845 -0.155 -0.876

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.33962.43933.69272.49511.07491.07372.60774.12684.54132.61093.20763.2076
C21.33961.48112.51401.51312.11292.11372.16962.80893.48102.15212.15462.1546
C32.43931.48111.33742.57312.66353.43531.07632.12092.10213.48422.86252.8625
C43.69272.51401.33743.00234.00054.61232.08061.07371.07354.06602.98492.9849
C52.49511.51312.57313.00233.48552.73203.51932.71334.07581.08201.08521.0852
H61.07492.11292.66354.00053.48551.82572.37384.65694.65903.68474.12834.1283
H71.07372.11373.43534.61232.73201.82573.68104.89155.52682.39613.48443.4844
H82.60772.16961.07632.08063.51932.37383.68103.05682.40664.31393.85453.8545
H94.12682.80892.12091.07372.71334.65694.89153.05681.82293.78672.50772.5077
H104.54133.48102.10211.07354.07584.65905.52682.40661.82295.13784.00744.0074
H112.61092.15213.48424.06601.08203.68472.39614.31393.78675.13781.75461.7546
H123.20762.15462.86252.98491.08524.12833.48443.85452.50774.00741.75461.7513
H133.20762.15462.86252.98491.08524.12833.48443.85452.50774.00741.75461.7513

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 119.631 C1 C2 C5 121.891
C2 C1 H6 121.733 C2 C1 H7 121.904
C2 C3 C4 126.166 C2 C3 H8 115.147
C2 C5 H11 110.953 C2 C5 H12 110.966
C2 C5 H13 110.966 C3 C2 C5 118.478
C3 C4 H9 122.831 C3 C4 H10 120.973
C4 C3 H8 118.687 H6 C1 H7 116.363
H9 C4 H10 116.196 H11 C5 H12 108.117
H11 C5 H13 108.117 H12 C5 H13 107.587
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.628      
2 C 0.426      
3 C -0.138      
4 C -0.508      
5 C -0.653      
6 H 0.188      
7 H 0.192      
8 H 0.189      
9 H 0.184      
10 H 0.188      
11 H 0.188      
12 H 0.186      
13 H 0.186      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.287 -0.068 0.000 0.295
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.708 -0.017 0.000
y -0.017 -30.465 0.000
z 0.000 0.000 -36.328
Traceless
 xyz
x 3.689 -0.017 0.000
y -0.017 2.553 0.000
z 0.000 0.000 -6.242
Polar
3z2-r2-12.484
x2-y20.757
xy-0.017
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.145 -1.650 0.000
y -1.650 12.850 0.000
z 0.000 0.000 4.018


<r2> (average value of r2) Å2
<r2> 132.495
(<r2>)1/2 11.511