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

using model chemistry: HF/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-194.025281
Energy at 298.15K-194.033301
Nuclear repulsion energy161.337335
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/6-311+G(3df,2p)
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' 3370 3062 16.09      
2 A' 3360 3053 13.99      
3 A' 3302 3000 5.27      
4 A' 3288 2987 13.72      
5 A' 3282 2982 3.42      
6 A' 3242 2946 24.81      
7 A' 3160 2871 25.62      
8 A' 1851 1682 2.09      
9 A' 1789 1626 45.02      
10 A' 1622 1473 6.68      
11 A' 1580 1436 1.42      
12 A' 1551 1409 2.65      
13 A' 1530 1390 2.59      
14 A' 1432 1301 0.72      
15 A' 1429 1298 0.72      
16 A' 1177 1070 4.22      
17 A' 1093 993 0.10      
18 A' 1030 936 0.45      
19 A' 828 753 0.38      
20 A' 568 516 0.01      
21 A' 458 416 2.06      
22 A' 299 271 1.42      
23 A" 3207 2914 23.04      
24 A" 1601 1455 7.59      
25 A" 1164 1058 0.00      
26 A" 1134 1030 13.25      
27 A" 1066 968 63.87      
28 A" 1052 956 41.13      
29 A" 859 780 0.66      
30 A" 707 642 0.20      
31 A" 443 402 12.55      
32 A" 232 211 0.24      
33 A" 159 145 0.13      

Unscaled Zero Point Vibrational Energy (zpe) 26431.6 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 24015.8 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/6-311+G(3df,2p)
ABC
0.28712 0.14055 0.09601

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.595 1.710 0.000
C2 0.000 0.528 0.000
C3 -0.821 -0.697 0.000
C4 -0.368 -1.937 0.000
C5 1.499 0.394 0.000
H6 -1.665 1.799 0.000
H7 -0.033 2.625 0.000
H8 -1.884 -0.536 0.000
H9 0.680 -2.171 0.000
H10 -1.045 -2.770 0.000
H11 1.971 1.367 0.000
H12 1.840 -0.149 0.874
H13 1.840 -0.149 -0.874

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.32312.41723.65362.47241.07421.07372.58984.08434.50192.58813.18513.1851
C21.32311.47412.49181.50482.09512.09752.16392.78283.45892.14202.14652.1465
C32.41721.47411.32012.56342.63533.41391.07602.10312.08483.47142.85362.8536
C43.65362.49181.32012.98653.95514.57412.06471.07321.07344.04762.97242.9724
C52.47241.50482.56342.98653.46192.70623.50902.69284.05981.08091.08441.0844
H61.07422.09512.63533.95513.46191.82872.34574.61094.61103.66144.10424.1042
H71.07372.09753.41394.57412.70621.82873.66314.84855.48872.36623.45943.4594
H82.58982.16391.07602.06473.50902.34573.66313.04102.38634.29933.84523.8452
H94.08432.78282.10311.07322.69284.61094.84853.04101.82563.76592.48982.4898
H104.50193.45892.08481.07344.05984.61105.48872.38631.82565.11913.99443.9944
H112.58812.14203.47144.04761.08093.66142.36624.29933.76595.11911.75471.7547
H123.18512.14652.85362.97241.08444.10423.45943.84522.48983.99441.75471.7489
H133.18512.14652.85362.97241.08444.10423.45943.84522.48983.99441.75471.7489

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 119.474 C1 C2 C5 121.785
C2 C1 H6 121.497 C2 C1 H7 121.782
C2 C3 C4 126.115 C2 C3 H8 115.222
C2 C5 H11 110.798 C2 C5 H12 110.951
C2 C5 H13 110.951 C3 C2 C5 118.740
C3 C4 H9 122.653 C3 C4 H10 120.822
C4 C3 H8 118.663 H6 C1 H7 116.721
H9 C4 H10 116.526 H11 C5 H12 108.263
H11 C5 H13 108.263 H12 C5 H13 107.488
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.412      
2 C 0.454      
3 C -0.072      
4 C -0.357      
5 C -0.614      
6 H 0.121      
7 H 0.117      
8 H 0.102      
9 H 0.128      
10 H 0.133      
11 H 0.103      
12 H 0.149      
13 H 0.149      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.276 -0.027 0.000 0.278
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.819 -0.053 0.000
y -0.053 -30.264 0.000
z 0.000 0.000 -35.864
Traceless
 xyz
x 3.246 -0.053 0.000
y -0.053 2.577 0.000
z 0.000 0.000 -5.823
Polar
3z2-r2-11.646
x2-y20.446
xy-0.053
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.643 -1.139 0.000
y -1.139 13.501 0.000
z 0.000 0.000 6.617


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000