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

using model chemistry: BLYP/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 BLYP/3-21G
 hartrees
Energy at 0K-195.342623
Energy at 298.15K-195.352395
Nuclear repulsion energy172.457187
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 BLYP/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 3066 3049 50.09      
2 A 3056 3039 24.66      
3 A 3041 3024 8.02      
4 A 3035 3019 13.05      
5 A 2956 2940 16.90      
6 A 2953 2937 61.77      
7 A 2947 2931 20.89      
8 A 1683 1674 0.46      
9 A 1531 1522 10.83      
10 A 1523 1515 1.59      
11 A 1514 1506 1.40      
12 A 1432 1424 2.64      
13 A 1423 1415 2.80      
14 A 1410 1402 3.34      
15 A 1381 1373 4.58      
16 A 1200 1193 6.25      
17 A 1112 1106 12.37      
18 A 1057 1051 6.57      
19 A 954 948 0.46      
20 A 936 930 3.63      
21 A 737 733 1.91      
22 A 517 515 2.23      
23 A 372 370 0.49      
24 A 298 296 0.19      
25 A 2989 2972 55.39      
26 A 2984 2968 16.15      
27 A 2983 2967 10.58      
28 A 1526 1518 18.65      
29 A 1522 1513 1.88      
30 A 1507 1499 1.00      
31 A 1108 1102 2.54      
32 A 1066 1061 0.00      
33 A 1025 1019 1.80      
34 A 815 811 15.45      
35 A 426 424 3.15      
36 A 253 252 1.90      
37 A 187 186 1.35      
38 A 166 165 0.06      
39 A 123 122 0.95      

Unscaled Zero Point Vibrational Energy (zpe) 29407.0 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 29245.3 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 BLYP/3-21G
ABC
0.26262 0.11463 0.08359

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.528 0.479 0.000
H2 -1.969 -0.528 0.000
H3 -1.899 1.021 0.890
H4 -1.899 1.021 -0.890
C5 0.287 -2.114 0.000
H6 0.673 -2.648 -0.889
H7 0.673 -2.648 0.889
H8 -0.809 -2.200 0.000
C9 0.756 -0.667 0.000
H10 1.847 -0.544 0.000
C11 0.000 0.451 0.000
C12 0.647 1.838 0.000
H13 1.746 1.768 0.000
H14 0.332 2.415 0.890
H15 0.332 2.415 -0.890

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 H8 C9 H10 C11 C12 H13 H14 H15
C11.09921.10621.10623.16523.92543.92542.77342.55563.52621.52802.56443.51862.82842.8284
H21.09921.78761.78762.75813.50193.50192.03482.72893.81592.19903.52714.36733.84033.8403
H31.10621.78761.77973.92454.82064.48043.51473.27024.15602.17322.81793.82592.63083.1765
H41.10621.78761.77973.92454.48044.82063.51473.27024.15602.17322.81793.82593.17652.6308
C53.16522.75813.92453.92451.10621.10621.09991.52092.21332.58163.96904.14744.61614.6161
H63.92543.50194.82064.48041.10621.77811.78552.17232.56813.29354.57344.63055.37705.0741
H73.92543.50194.48044.82061.10621.77811.78552.17232.56813.29354.57344.63055.07415.3770
H82.77342.03483.51473.51471.09991.78551.78552.19083.13012.77194.29264.71964.83654.8365
C92.55562.72893.27023.27021.52092.17232.17232.19081.09751.35052.50832.62903.23633.2363
H103.52623.81594.15604.15602.21332.56812.56813.13011.09752.09792.66752.31423.44123.4412
C111.52802.19902.17322.17322.58163.29353.29352.77191.35052.09791.53042.18702.18142.1814
C122.56443.52712.81792.81793.96904.57344.57344.29262.50832.66751.53041.10171.10631.1063
H133.51864.36733.82593.82594.14744.63054.63054.71962.62902.31422.18701.10171.79171.7917
H142.82843.84032.63083.17654.61615.37705.07414.83653.23633.44122.18141.10631.79171.7804
H152.82843.84033.17652.63084.61615.07415.37704.83653.23633.44122.18141.10631.79171.7804

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 125.094 C1 C11 C12 113.959
H2 C1 H3 108.307 H2 C1 H4 108.307
H2 C1 C11 112.634 H3 C1 H4 107.115
H3 C1 C11 110.149 H4 C1 C11 110.149
C5 C9 H10 114.432 C5 C9 C11 127.975
H6 C5 H7 106.975 H6 C5 H8 108.059
H6 C5 C9 110.561 H7 C5 H8 108.059
H7 C5 C9 110.561 H8 C5 C9 112.426
C9 C11 C12 120.947 H10 C9 C11 117.593
C11 C12 H13 111.337 C11 C12 H14 110.627
C11 C12 H15 110.627 H13 C12 H14 108.477
H13 C12 H15 108.477 H14 C12 H15 107.162
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.572      
2 H 0.186      
3 H 0.184      
4 H 0.184      
5 C -0.576      
6 H 0.186      
7 H 0.186      
8 H 0.185      
9 C -0.148      
10 H 0.150      
11 C 0.048      
12 C -0.554      
13 H 0.179      
14 H 0.181      
15 H 0.181      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.190 0.053 0.000 0.197
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.138 -0.303 0.000
y -0.303 -31.681 0.000
z 0.000 0.000 -34.529
Traceless
 xyz
x 0.967 -0.303 0.000
y -0.303 1.652 0.000
z 0.000 0.000 -2.619
Polar
3z2-r2-5.239
x2-y2-0.457
xy-0.303
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> 153.675
(<r2>)1/2 12.397