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All results from a given calculation for C5H10 (2-Butene, 2-methyl-)

using model chemistry: MP2=FULL/3-21G

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=FULL/3-21G
 hartrees
Energy at 0K-194.530428
Energy at 298.15K-194.540265
HF Energy-194.064027
Nuclear repulsion energy173.063944
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=FULL/3-21G
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 3183 3039 32.03      
2 A 3167 3024 22.98      
3 A 3149 3007 23.83      
4 A 3143 3001 3.96      
5 A 3077 2938 13.08      
6 A 3073 2934 28.67      
7 A 3065 2927 18.75      
8 A 1730 1652 0.11      
9 A 1603 1531 10.84      
10 A 1596 1524 2.04      
11 A 1590 1518 0.88      
12 A 1502 1434 3.38      
13 A 1490 1423 5.95      
14 A 1476 1409 2.83      
15 A 1438 1373 2.87      
16 A 1251 1194 4.31      
17 A 1160 1108 8.46      
18 A 1101 1052 5.36      
19 A 997 952 1.07      
20 A 969 925 1.80      
21 A 754 720 1.65      
22 A 533 509 2.07      
23 A 390 373 0.30      
24 A 309 295 0.16      
25 A 3128 2987 35.24      
26 A 3127 2986 26.97      
27 A 3124 2982 0.30      
28 A 1596 1524 19.20      
29 A 1590 1519 0.37      
30 A 1578 1507 1.14      
31 A 1168 1115 0.73      
32 A 1125 1074 0.15      
33 A 1078 1030 1.94      
34 A 850 812 16.27      
35 A 440 420 3.45      
36 A 260 248 1.88      
37 A 185 176 0.97      
38 A 138 132 0.43      
39 A 97 92 0.42      

Unscaled Zero Point Vibrational Energy (zpe) 30614.5 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 29230.8 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 MP2=FULL/3-21G
ABC
0.26442 0.11520 0.08404

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.524 0.481 0.000
H2 -1.961 -0.521 0.000
H3 -1.888 1.017 0.886
H4 -1.888 1.017 -0.886
C5 0.286 -2.112 0.000
H6 0.665 -2.637 -0.886
H7 0.665 -2.637 0.886
H8 -0.804 -2.187 0.000
C9 0.756 -0.665 0.000
H10 1.840 -0.543 0.000
C11 0.000 0.450 0.000
C12 0.644 1.834 0.000
H13 1.737 1.757 0.000
H14 0.334 2.402 0.887
H15 0.334 2.402 -0.887

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 H8 C9 H10 C11 C12 H13 H14 H15
C11.09281.09761.09763.16233.91143.91142.76362.55203.51681.52482.55593.50172.81562.8156
H21.09281.77631.77632.75353.48693.48692.02862.72063.80132.18823.51174.34273.82013.8201
H31.09761.77631.77263.91144.79654.45723.49643.25614.13692.16112.80393.80372.61763.1616
H41.09761.77631.77263.91144.45724.79653.49643.25614.13692.16112.80393.80373.16162.6176
C53.16232.75353.91143.91141.09711.09711.09311.52052.20822.57753.96214.13114.59994.5999
H63.91143.48694.79654.45721.09711.77121.77332.16342.55983.27964.55834.60835.35175.0497
H73.91143.48694.45724.79651.09711.77121.77332.16342.55983.27964.55834.60835.04975.3517
H82.76362.02863.49643.49641.09311.77331.77332.17923.11402.75704.27424.69134.81024.8102
C92.55202.72063.25613.25611.52052.16342.16342.17921.09141.34722.50222.61303.22053.2205
H103.51683.80134.13694.13692.20822.55982.55983.11401.09142.09082.66112.30143.42423.4242
C111.52482.18822.16112.16112.57753.27963.27962.75701.34722.09081.52672.17322.16952.1695
C122.55593.51172.80392.80393.96214.55834.55834.27422.50222.66111.52671.09571.09751.0975
H133.50174.34273.80373.80374.13114.60834.60834.69132.61302.30142.17321.09571.78081.7808
H142.81563.82012.61763.16164.59995.35175.04974.81023.22053.42422.16951.09751.78081.7735
H152.81563.82013.16162.61764.59995.04975.35174.81023.22053.42422.16951.09751.78081.7735

picture of 2-Butene, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C11 C9 125.280 C1 C11 C12 113.775
H2 C1 H3 108.381 H2 C1 H4 108.381
H2 C1 C11 112.391 H3 C1 H4 107.704
H3 C1 C11 109.926 H4 C1 C11 109.926
C5 C9 H10 114.433 C5 C9 C11 127.906
H6 C5 H7 107.650 H6 C5 H8 108.124
H6 C5 C9 110.432 H7 C5 H8 108.124
H7 C5 C9 110.432 H8 C5 C9 111.939
C9 C11 C12 120.945 H10 C9 C11 117.661
C11 C12 H13 110.863 C11 C12 H14 110.462
C11 C12 H15 110.462 H13 C12 H14 108.583
H13 C12 H15 108.583 H14 C12 H15 107.801
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability