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

using model chemistry: MP2/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 MP2/LANL2DZ
 hartrees
Energy at 0K-194.327218
Energy at 298.15K-194.334696
HF Energy-193.898099
Nuclear repulsion energy157.368879
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 MP2/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' 3255 3135 31.99      
2 A' 3244 3124 22.82      
3 A' 3155 3039 8.77      
4 A' 3137 3021 22.54      
5 A' 3135 3019 8.76      
6 A' 3129 3013 30.54      
7 A' 3017 2905 26.75      
8 A' 1671 1609 1.64      
9 A' 1624 1564 18.18      
10 A' 1549 1492 9.14      
11 A' 1500 1444 1.52      
12 A' 1462 1408 10.81      
13 A' 1452 1399 1.83      
14 A' 1349 1299 0.57      
15 A' 1330 1281 2.24      
16 A' 1105 1064 6.34      
17 A' 1031 993 1.07      
18 A' 971 935 0.58      
19 A' 773 745 0.29      
20 A' 532 512 0.31      
21 A' 423 407 0.69      
22 A' 279 268 0.52      
23 A" 3104 2989 30.16      
24 A" 1524 1468 10.32      
25 A" 1099 1059 0.32      
26 A" 981 945 44.50      
27 A" 874 842 68.14      
28 A" 830 800 46.09      
29 A" 755 727 0.03      
30 A" 615 593 0.39      
31 A" 388 374 12.53      
32 A" 198 191 0.63      
33 A" 131 126 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24809.9 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 23894.4 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 MP2/LANL2DZ
ABC
0.27516 0.13334 0.09138

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.596 1.774 0.000
C2 0.000 0.535 0.000
C3 -0.846 -0.700 0.000
C4 -0.376 -1.990 0.000
C5 1.527 0.381 0.000
H6 -1.686 1.884 0.000
H7 -0.007 2.696 0.000
H8 -1.933 -0.535 0.000
H9 0.692 -2.223 0.000
H10 -1.064 -2.840 0.000
H11 2.016 1.370 0.000
H12 1.867 -0.176 0.893
H13 1.867 -0.176 -0.893

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.37482.48683.77042.53971.09541.09402.66854.20004.63802.64313.26613.2661
C21.37481.49752.55301.53492.15892.16052.20972.84423.53932.18182.18842.1884
C32.48681.49751.37272.60792.71683.49811.09912.16512.15123.53242.90432.9043
C43.77042.55301.37273.04024.08894.70012.13031.09381.09384.12453.02023.0202
C52.53971.53492.60793.04023.54732.77703.57932.73464.13401.10351.10581.1058
H61.09542.15892.71684.08893.54731.86542.43174.74594.76463.73744.20284.2028
H71.09402.16053.49814.70012.77701.86543.76184.96855.63602.41833.54323.5432
H82.66852.20971.09912.13033.57932.43173.76183.12102.46304.38463.92013.9201
H94.20002.84422.16511.09382.73464.74594.96853.12101.86173.82942.52402.5240
H104.63803.53932.15121.09384.13404.76465.63602.46301.86175.21674.06084.0608
H112.64312.18183.53244.12451.10353.73742.41834.38463.82945.21671.79141.7914
H123.26612.18842.90433.02021.10584.20283.54323.92012.52404.06081.79141.7861
H133.26612.18842.90433.02021.10584.20283.54323.92012.52404.06081.79141.7861

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 119.885 C1 C2 C5 121.481
C2 C1 H6 121.441 C2 C1 H7 121.696
C2 C3 C4 125.565 C2 C3 H8 115.798
C2 C5 H11 110.512 C2 C5 H12 110.889
C2 C5 H13 110.889 C3 C2 C5 118.634
C3 C4 H9 122.346 C3 C4 H10 121.007
C4 C3 H8 118.637 H6 C1 H7 116.863
H9 C4 H10 116.647 H11 C5 H12 108.360
H11 C5 H13 108.360 H12 C5 H13 107.727
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability