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All results from a given calculation for C5H8 (2,3-Pentadiene)

using model chemistry: MP2/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/LANL2DZ
 hartrees
Energy at 0K-194.304745
Energy at 298.15K-194.311725
HF Energy-193.875033
Nuclear repulsion energy149.201752
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 3146 3030 28.68      
2 A 3131 3016 0.61      
3 A 3106 2991 32.75      
4 A 3016 2905 13.40      
5 A 1543 1486 3.47      
6 A 1524 1468 8.26      
7 A 1457 1404 4.74      
8 A 1444 1391 0.06      
9 A 1179 1135 0.20      
10 A 1119 1078 2.25      
11 A 1095 1055 0.04      
12 A 926 892 31.91      
13 A 809 779 0.01      
14 A 524 504 5.87      
15 A 295 284 0.95      
16 A 163 157 0.17      
17 A 134 129 2.85      
18 A 3148 3032 51.36      
19 A 3131 3016 13.92      
20 A 3106 2991 34.49      
21 A 3015 2904 74.71      
22 A 1996 1923 4.52      
23 A 1539 1482 11.73      
24 A 1523 1467 8.26      
25 A 1455 1401 4.54      
26 A 1351 1301 8.53      
27 A 1119 1078 7.02      
28 A 1093 1053 0.65      
29 A 970 934 9.88      
30 A 725 698 26.75      
31 A 562 541 14.17      
32 A 218 210 1.71      
33 A 148 142 1.80      

Unscaled Zero Point Vibrational Energy (zpe) 24854.5 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 23937.4 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
0.55095 0.07137 0.06899

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.427
C2 0.000 1.343 0.424
C3 0.000 -1.343 0.424
C4 -0.900 2.213 -0.473
C5 0.900 -2.213 -0.473
H6 0.681 1.874 1.105
H7 -0.681 -1.874 1.105
H8 -1.550 2.863 0.142
H9 -0.288 2.864 -1.124
H10 -1.540 1.580 -1.111
H11 1.550 -2.863 0.142
H12 0.288 -2.864 -1.124
H13 1.540 -1.580 -1.111

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.34331.34332.55342.55342.10582.10583.26803.27012.68993.26803.27012.6899
C21.34332.68671.54053.77691.09913.35832.18902.18942.18774.49164.49273.6436
C31.34332.68673.77691.54053.35831.09914.49164.49273.64362.18902.18942.1877
C42.55341.54053.77694.77862.25954.38681.10561.10581.10325.66995.25504.5552
C52.55343.77691.54054.77864.38682.25955.66995.25504.55521.10561.10581.1032
H62.10581.09913.35832.25954.38683.98772.62342.62403.15114.91135.25114.1929
H72.10583.35831.09914.38682.25953.98774.91135.25114.19292.62342.62403.1511
H83.26802.18904.49161.10565.66992.62344.91131.78771.79336.51106.14645.5549
H93.27012.18944.49271.10585.25502.62405.25111.78771.79386.14645.75754.8054
H102.68992.18773.64361.10324.55523.15114.19291.79331.79385.55494.80544.4125
H113.26804.49162.18905.66991.10564.91132.62346.51106.14645.55491.78771.7933
H123.27014.49272.18945.25501.10585.25112.62406.14645.75754.80541.78771.7938
H132.68993.64362.18774.55521.10324.19293.15115.55494.80544.41251.79331.7938

picture of 2,3-Pentadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 124.464 C1 C2 H6 118.785
C1 C3 C5 124.464 C1 C3 H7 118.785
C2 C1 C3 179.754 C2 C4 H8 110.558
C2 C4 H9 110.578 C2 C4 H10 110.602
C3 C5 H11 110.558 C3 C5 H12 110.578
C3 C5 H13 110.602 C4 C2 H6 116.752
C5 C3 H7 116.752 H8 C4 H9 107.875
H8 C4 H10 108.558 H9 C4 H10 108.588
H11 C5 H12 107.875 H11 C5 H13 108.558
H12 C5 H13 108.588
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability