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

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-196.470823
Energy at 298.15K-196.480637
Nuclear repulsion energy174.227046
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 B3PW91/6-31G*
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 3160 3024 48.63      
2 A 3153 3016 30.66      
3 A 3139 3003 10.92      
4 A 3136 3000 11.07      
5 A 3042 2910 8.85      
6 A 3039 2908 75.94      
7 A 3032 2901 27.71      
8 A 1771 1694 1.10      
9 A 1524 1458 12.05      
10 A 1523 1457 1.46      
11 A 1506 1441 1.66      
12 A 1446 1384 1.33      
13 A 1438 1376 1.66      
14 A 1434 1372 6.76      
15 A 1386 1326 3.21      
16 A 1252 1197 4.70      
17 A 1147 1097 9.39      
18 A 1080 1033 7.79      
19 A 981 938 2.84      
20 A 970 928 1.08      
21 A 783 749 1.85      
22 A 526 503 2.40      
23 A 381 365 0.45      
24 A 299 286 0.24      
25 A 3090 2956 33.85      
26 A 3089 2955 29.22      
27 A 3084 2951 14.79      
28 A 1515 1449 19.56      
29 A 1507 1442 1.63      
30 A 1495 1431 0.78      
31 A 1113 1065 0.78      
32 A 1069 1022 0.52      
33 A 1026 982 2.33      
34 A 833 797 12.40      
35 A 453 433 2.44      
36 A 264 253 1.58      
37 A 185 177 1.29      
38 A 149 143 0.05      
39 A 125 120 0.75      

Unscaled Zero Point Vibrational Energy (zpe) 30072.6 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 28770.5 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 B3PW91/6-31G*
ABC
0.26827 0.11706 0.08536

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.504 0.498 0.000
H2 -1.969 -0.491 0.000
H3 -1.875 1.042 0.880
H4 -1.875 1.042 -0.880
C5 0.264 -2.095 0.000
H6 0.644 -2.632 -0.880
H7 0.644 -2.632 0.880
H8 -0.825 -2.190 0.000
C9 0.733 -0.672 0.000
H10 1.819 -0.554 0.000
C11 0.000 0.451 0.000
C12 0.664 1.803 0.000
H13 1.756 1.722 0.000
H14 0.367 2.391 0.880
H15 0.367 2.391 -0.880

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 H8 C9 H10 C11 C12 H13 H14 H15
C11.09261.09901.09903.13763.89623.89622.77192.52443.48501.50452.53083.48232.80382.8038
H21.09261.77011.77012.74913.49083.49082.04802.70843.78832.18283.49244.33303.81323.8132
H31.09901.77011.75923.89704.78934.45443.51023.24244.11852.15342.79263.79712.61663.1532
H41.09901.77011.75923.89704.45444.78933.51023.24244.11852.15342.79263.79713.15322.6166
C53.13762.74913.89703.89701.09871.09871.09341.49832.18912.55963.91834.09864.57274.5727
H63.89623.49084.78934.45441.09871.75951.76882.15012.54393.27024.52144.57945.32965.0307
H73.89623.49084.45444.78931.09871.75951.76882.15012.54393.27024.52144.57945.03075.3296
H82.77192.04803.51023.51021.09341.76881.76882.17583.10942.76734.26194.68744.81514.8151
C92.52442.70843.24243.24241.49832.15012.15012.17581.09191.34142.47602.60373.20813.2081
H103.48503.78834.11854.11852.18912.54392.54393.10941.09192.07812.62452.27733.39933.3993
C111.50452.18282.15342.15342.55963.27023.27022.76731.34142.07811.50622.16792.16172.1617
C122.53083.49242.79262.79263.91834.52144.52144.26192.47602.62451.50621.09471.09931.0993
H133.48234.33303.79713.79714.09864.57944.57944.68742.60372.27732.16791.09471.77471.7747
H142.80383.81322.61663.15324.57275.32965.03074.81513.20813.39932.16171.09931.77471.7598
H152.80383.81323.15322.61664.57275.03075.32964.81513.20813.39932.16171.09931.77471.7598

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 124.905 C1 C11 C12 114.405
H2 C1 H3 107.739 H2 C1 H4 107.739
H2 C1 C11 113.435 H3 C1 H4 106.335
H3 C1 C11 110.642 H4 C1 C11 110.642
C5 C9 H10 114.470 C5 C9 C11 128.597
H6 C5 H7 106.404 H6 C5 H8 107.593
H6 C5 C9 110.838 H7 C5 H8 107.593
H7 C5 C9 110.838 H8 C5 C9 113.263
C9 C11 C12 120.691 H10 C9 C11 116.933
C11 C12 H13 111.951 C11 C12 H14 111.169
C11 C12 H15 111.169 H13 C12 H14 107.983
H13 C12 H15 107.983 H14 C12 H15 106.347
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.573     -0.336
2 H 0.175     0.101
3 H 0.174     0.101
4 H 0.174     0.101
5 C -0.555     -0.236
6 H 0.176     0.086
7 H 0.176     0.086
8 H 0.173     0.086
9 C -0.180     -0.236
10 H 0.140     0.133
11 C 0.172     0.231
12 C -0.568     -0.601
13 H 0.173     0.146
14 H 0.171     0.169
15 H 0.171     0.169


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.172 0.058 0.000 0.182
CHELPG        
AIM        
ESP -0.225 0.065 0.000 0.234


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.843 -0.340 0.000
y -0.340 -31.495 0.000
z 0.000 0.000 -33.836
Traceless
 xyz
x 0.822 -0.340 0.000
y -0.340 1.344 0.000
z 0.000 0.000 -2.167
Polar
3z2-r2-4.333
x2-y2-0.348
xy-0.340
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 150.836
(<r2>)1/2 12.282